Support connecting to multiple OpenFlow controllers
Change-Id: I0989d5031fb2d4f5aa78ba0e4576e465f826a419
diff --git a/VERSION b/VERSION
index 0664a8f..237bbfe 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.1.6
+1.1.7-dev
diff --git a/cmd/ofagent/config.go b/cmd/ofagent/config.go
index a33e1f2..9db89ea 100644
--- a/cmd/ofagent/config.go
+++ b/cmd/ofagent/config.go
@@ -18,11 +18,12 @@
import (
"flag"
"os"
+ "strings"
"time"
)
type Config struct {
- OFControllerEndPoint string
+ OFControllerEndPoints multiFlag
VolthaApiEndPoint string
LogLevel string
Banner bool
@@ -40,6 +41,17 @@
InstanceID string
}
+type multiFlag []string
+
+func (m *multiFlag) String() string {
+ return "[" + strings.Join(*m, ", ") + "]"
+}
+
+func (m *multiFlag) Set(value string) error {
+ *m = append(*m, value)
+ return nil
+}
+
func parseCommandLineArguments() (*Config, error) {
config := Config{}
@@ -51,13 +63,11 @@
"version",
false,
"display application version and exit")
- flag.StringVar(&(config.OFControllerEndPoint),
+ flag.Var(&config.OFControllerEndPoints,
"controller",
- "onos-openflow:6653",
"connection to the OF controller specified as host:port")
- flag.StringVar(&(config.OFControllerEndPoint),
+ flag.Var(&config.OFControllerEndPoints,
"O",
- "onos-openflow:6653",
"(short) connection to the OF controller specified as host:port")
flag.StringVar(&(config.VolthaApiEndPoint),
"voltha",
diff --git a/cmd/ofagent/main.go b/cmd/ofagent/main.go
index 911c0b2..d2f1fc4 100644
--- a/cmd/ofagent/main.go
+++ b/cmd/ofagent/main.go
@@ -129,7 +129,7 @@
}
ofa, err := ofagent.NewOFAgent(&ofagent.OFAgent{
- OFControllerEndPoint: config.OFControllerEndPoint,
+ OFControllerEndPoints: config.OFControllerEndPoints,
VolthaApiEndPoint: config.VolthaApiEndPoint,
DeviceListRefreshInterval: config.DeviceListRefreshInterval,
ConnectionMaxRetries: config.ConnectionMaxRetries,
diff --git a/go.mod b/go.mod
index f8a6395..f695b36 100644
--- a/go.mod
+++ b/go.mod
@@ -7,6 +7,7 @@
github.com/golang/protobuf v1.3.2
github.com/opencord/voltha-lib-go/v3 v3.0.23
github.com/opencord/voltha-protos/v3 v3.2.3
+ github.com/stretchr/testify v1.4.0
golang.org/x/net v0.0.0-20191112182307-2180aed22343
google.golang.org/grpc v1.25.1
)
diff --git a/internal/pkg/ofagent/ofagent.go b/internal/pkg/ofagent/ofagent.go
index 1d225b2..419a988 100644
--- a/internal/pkg/ofagent/ofagent.go
+++ b/internal/pkg/ofagent/ofagent.go
@@ -44,7 +44,7 @@
type OFAgent struct {
VolthaApiEndPoint string
- OFControllerEndPoint string
+ OFControllerEndPoints []string
DeviceListRefreshInterval time.Duration
ConnectionMaxRetries int
ConnectionRetryDelay time.Duration
@@ -63,7 +63,7 @@
func NewOFAgent(config *OFAgent) (*OFAgent, error) {
ofa := OFAgent{
VolthaApiEndPoint: config.VolthaApiEndPoint,
- OFControllerEndPoint: config.OFControllerEndPoint,
+ OFControllerEndPoints: config.OFControllerEndPoints,
DeviceListRefreshInterval: config.DeviceListRefreshInterval,
ConnectionMaxRetries: config.ConnectionMaxRetries,
ConnectionRetryDelay: config.ConnectionRetryDelay,
@@ -99,7 +99,7 @@
logger.Debugw("Starting GRPC - VOLTHA client",
log.Fields{
"voltha-endpoint": ofa.VolthaApiEndPoint,
- "controller-endpoint": ofa.OFControllerEndPoint})
+ "controller-endpoint": ofa.OFControllerEndPoints})
// If the context contains a k8s probe then register services
p := probe.GetProbeFromContext(ctx)
diff --git a/internal/pkg/ofagent/refresh.go b/internal/pkg/ofagent/refresh.go
index d50b3ec..835e551 100644
--- a/internal/pkg/ofagent/refresh.go
+++ b/internal/pkg/ofagent/refresh.go
@@ -90,14 +90,14 @@
ofc := ofa.clientMap[deviceID]
if ofc == nil {
ofc = openflow.NewOFClient(&openflow.OFClient{
- DeviceID: deviceID,
- OFControllerEndPoint: ofa.OFControllerEndPoint,
- VolthaClient: ofa.volthaClient,
- PacketOutChannel: ofa.packetOutChannel,
- ConnectionMaxRetries: ofa.ConnectionMaxRetries,
- ConnectionRetryDelay: ofa.ConnectionRetryDelay,
+ DeviceID: deviceID,
+ OFControllerEndPoints: ofa.OFControllerEndPoints,
+ VolthaClient: ofa.volthaClient,
+ PacketOutChannel: ofa.packetOutChannel,
+ ConnectionMaxRetries: ofa.ConnectionMaxRetries,
+ ConnectionRetryDelay: ofa.ConnectionRetryDelay,
})
- go ofc.Run(context.Background())
+ ofc.Run(context.Background())
ofa.clientMap[deviceID] = ofc
}
ofa.mapLock.Unlock()
diff --git a/internal/pkg/openflow/barrier.go b/internal/pkg/openflow/barrier.go
index 3db9e84..4775d2c 100644
--- a/internal/pkg/openflow/barrier.go
+++ b/internal/pkg/openflow/barrier.go
@@ -22,7 +22,7 @@
"github.com/opencord/voltha-lib-go/v3/pkg/log"
)
-func (ofc *OFClient) handleBarrierRequest(request *ofp.BarrierRequest) {
+func (ofc *OFConnection) handleBarrierRequest(request *ofp.BarrierRequest) {
if logger.V(log.DebugLevel) {
js, _ := json.Marshal(request)
diff --git a/internal/pkg/openflow/client.go b/internal/pkg/openflow/client.go
index 94ad645..aeac406 100644
--- a/internal/pkg/openflow/client.go
+++ b/internal/pkg/openflow/client.go
@@ -17,17 +17,12 @@
package openflow
import (
- "bufio"
"context"
- "encoding/binary"
- "encoding/json"
"errors"
- "github.com/donNewtonAlpha/goloxi"
ofp "github.com/donNewtonAlpha/goloxi/of13"
"github.com/opencord/voltha-lib-go/v3/pkg/log"
"github.com/opencord/voltha-protos/v3/go/voltha"
- "io"
- "net"
+ "sync"
"time"
)
@@ -35,6 +30,7 @@
type ofcEvent byte
type ofcState byte
+type ofcRole byte
const (
ofcEventStart = ofcEvent(iota)
@@ -47,6 +43,11 @@
ofcStateConnected
ofcStateDisconnected
ofcStateStopped
+
+ ofcRoleNone = ofcRole(iota)
+ ofcRoleEqual
+ ofcRoleMaster
+ ofcRoleSlave
)
func (e ofcEvent) String() string {
@@ -84,19 +85,73 @@
// OFClient the configuration and operational state of a connection to an
// openflow controller
type OFClient struct {
- OFControllerEndPoint string
- Port uint16
- DeviceID string
- VolthaClient voltha.VolthaServiceClient
- PacketOutChannel chan *voltha.PacketOut
- ConnectionMaxRetries int
- ConnectionRetryDelay time.Duration
- conn net.Conn
+ OFControllerEndPoints []string
+ DeviceID string
+ VolthaClient voltha.VolthaServiceClient
+ PacketOutChannel chan *voltha.PacketOut
+ ConnectionMaxRetries int
+ ConnectionRetryDelay time.Duration
- // expirimental
- events chan ofcEvent
- sendChannel chan Message
- lastUnsentMessage Message
+ // map of endpoint to OF connection
+ connections map[string]*OFConnection
+
+ // global role state for device
+ generationIsDefined bool
+ generationID uint64
+ roleLock sync.Mutex
+}
+
+type RoleManager interface {
+ UpdateRoles(from string, request *ofp.RoleRequest) bool
+}
+
+func distance(a uint64, b uint64) int64 {
+ return (int64)(a - b)
+}
+
+// UpdateRoles validates a role request and updates role state for connections where it changed
+func (ofc *OFClient) UpdateRoles(from string, request *ofp.RoleRequest) bool {
+ log.Debug("updating role", log.Fields{
+ "from": from,
+ "to": request.Role,
+ "id": request.GenerationId})
+
+ ofc.roleLock.Lock()
+ defer ofc.roleLock.Unlock()
+
+ if request.Role == ofp.OFPCRRoleEqual {
+ // equal request doesn't care about generation ID and always succeeds
+ connection := ofc.connections[from]
+ connection.role = ofcRoleEqual
+ return true
+ }
+
+ if ofc.generationIsDefined && distance(request.GenerationId, ofc.generationID) < 0 {
+ // generation ID is not valid
+ return false
+ } else {
+ ofc.generationID = request.GenerationId
+ ofc.generationIsDefined = true
+
+ if request.Role == ofp.OFPCRRoleMaster {
+ // master is potentially changing, find the existing master and set it to slave
+ for endpoint, connection := range ofc.connections {
+ if endpoint == from {
+ connection.role = ofcRoleMaster
+ } else if connection.role == ofcRoleMaster {
+ // the old master should be set to slave
+ connection.role = ofcRoleSlave
+ }
+ }
+ return true
+ } else if request.Role == ofp.OFPCRRoleSlave {
+ connection := ofc.connections[from]
+ connection.role = ofcRoleSlave
+ return true
+ }
+ }
+
+ return false
}
// NewClient returns an initialized OFClient instance based on the configuration
@@ -104,14 +159,13 @@
func NewOFClient(config *OFClient) *OFClient {
ofc := OFClient{
- DeviceID: config.DeviceID,
- OFControllerEndPoint: config.OFControllerEndPoint,
- VolthaClient: config.VolthaClient,
- PacketOutChannel: config.PacketOutChannel,
- ConnectionMaxRetries: config.ConnectionMaxRetries,
- ConnectionRetryDelay: config.ConnectionRetryDelay,
- events: make(chan ofcEvent, 10),
- sendChannel: make(chan Message, 100),
+ DeviceID: config.DeviceID,
+ OFControllerEndPoints: config.OFControllerEndPoints,
+ VolthaClient: config.VolthaClient,
+ PacketOutChannel: config.PacketOutChannel,
+ ConnectionMaxRetries: config.ConnectionMaxRetries,
+ ConnectionRetryDelay: config.ConnectionRetryDelay,
+ connections: make(map[string]*OFConnection),
}
if ofc.ConnectionRetryDelay <= 0 {
@@ -127,417 +181,43 @@
// Stop initiates a shutdown of the OFClient
func (ofc *OFClient) Stop() {
- ofc.events <- ofcEventStop
-}
-
-func (ofc *OFClient) peekAtOFHeader(buf []byte) (ofp.IHeader, error) {
- header := ofp.Header{}
- header.Version = uint8(buf[0])
- header.Type = uint8(buf[1])
- header.Length = binary.BigEndian.Uint16(buf[2:4])
- header.Xid = binary.BigEndian.Uint32(buf[4:8])
-
- // TODO: add minimal validation of version and type
-
- return &header, nil
-}
-
-func (ofc *OFClient) establishConnectionToController() error {
- if ofc.conn != nil {
- logger.Debugw("closing-of-connection-to-reconnect",
- log.Fields{"device-id": ofc.DeviceID})
- ofc.conn.Close()
- ofc.conn = nil
+ for _, connection := range ofc.connections {
+ connection.events <- ofcEventStop
}
- try := 1
- for ofc.ConnectionMaxRetries == 0 || try < ofc.ConnectionMaxRetries {
- if raddr, err := net.ResolveTCPAddr("tcp", ofc.OFControllerEndPoint); err != nil {
- logger.Debugw("openflow-client unable to resolve endpoint",
- log.Fields{
- "device-id": ofc.DeviceID,
- "endpoint": ofc.OFControllerEndPoint})
- } else {
- if connection, err := net.DialTCP("tcp", nil, raddr); err == nil {
- ofc.conn = connection
- ofc.sayHello()
- ofc.events <- ofcEventConnect
- return nil
- } else {
- logger.Warnw("openflow-client-connect-error",
- log.Fields{
- "device-id": ofc.DeviceID,
- "endpoint": ofc.OFControllerEndPoint})
- }
- }
- if ofc.ConnectionMaxRetries == 0 || try < ofc.ConnectionMaxRetries {
- if ofc.ConnectionMaxRetries != 0 {
- try += 1
- }
- time.Sleep(ofc.ConnectionRetryDelay)
- }
- }
- return errors.New("failed-to-connect-to-of-controller")
}
-// Run implementes the state machine for the OF client reacting to state change
-// events and invoking actions as a reaction to those state changes
func (ofc *OFClient) Run(ctx context.Context) {
- var ofCtx context.Context
- var ofDone func()
- state := ofcStateCreated
- ofc.events <- ofcEventStart
-top:
- for {
- select {
- case <-ctx.Done():
- state = ofcStateStopped
- logger.Debugw("state-transition-context-done",
- log.Fields{"device-id": ofc.DeviceID})
- break top
- case event := <-ofc.events:
- previous := state
- switch event {
- case ofcEventStart:
- logger.Debugw("ofc-event-start",
- log.Fields{"device-id": ofc.DeviceID})
- if state == ofcStateCreated {
- state = ofcStateStarted
- logger.Debug("STARTED MORE THAN ONCE")
- go func() {
- if err := ofc.establishConnectionToController(); err != nil {
- logger.Errorw("controller-connection-failed", log.Fields{"error": err})
- panic(err)
- }
- }()
- } else {
- logger.Errorw("illegal-state-transition",
- log.Fields{
- "device-id": ofc.DeviceID,
- "current-state": state.String(),
- "event": event.String()})
- }
- case ofcEventConnect:
- logger.Debugw("ofc-event-connected",
- log.Fields{"device-id": ofc.DeviceID})
- if state == ofcStateStarted || state == ofcStateDisconnected {
- state = ofcStateConnected
- ofCtx, ofDone = context.WithCancel(context.Background())
- go ofc.messageSender(ofCtx)
- go ofc.processOFStream(ofCtx)
- } else {
- logger.Errorw("illegal-state-transition",
- log.Fields{
- "device-id": ofc.DeviceID,
- "current-state": state.String(),
- "event": event.String()})
- }
- case ofcEventDisconnect:
- logger.Debugw("ofc-event-disconnected",
- log.Fields{
- "device-id": ofc.DeviceID,
- "state": state.String()})
- if state == ofcStateConnected {
- state = ofcStateDisconnected
- if ofDone != nil {
- ofDone()
- ofDone = nil
- }
- go func() {
- if err := ofc.establishConnectionToController(); err != nil {
- logger.Errorw("controller-connection-failed", log.Fields{"error": err})
- panic(err)
- }
- }()
- } else {
- logger.Errorw("illegal-state-transition",
- log.Fields{
- "device-id": ofc.DeviceID,
- "current-state": state.String(),
- "event": event.String()})
- }
- case ofcEventStop:
- logger.Debugw("ofc-event-stop",
- log.Fields{"device-id": ofc.DeviceID})
- if state == ofcStateCreated || state == ofcStateConnected || state == ofcStateDisconnected {
- state = ofcStateStopped
- break top
- } else {
- logger.Errorw("illegal-state-transition",
- log.Fields{
- "device-id": ofc.DeviceID,
- "current-state": state.String(),
- "event": event.String()})
- }
- }
- logger.Debugw("state-transition",
- log.Fields{
- "device-id": ofc.DeviceID,
- "previous-state": previous.String(),
- "current-state": state.String(),
- "event": event.String()})
+ for _, endpoint := range ofc.OFControllerEndPoints {
+ connection := &OFConnection{
+ OFControllerEndPoint: endpoint,
+ DeviceID: ofc.DeviceID,
+ VolthaClient: ofc.VolthaClient,
+ PacketOutChannel: ofc.PacketOutChannel,
+ ConnectionMaxRetries: ofc.ConnectionMaxRetries,
+ ConnectionRetryDelay: ofc.ConnectionRetryDelay,
+ role: ofcRoleNone,
+ roleManager: ofc,
+ events: make(chan ofcEvent, 10),
+ sendChannel: make(chan Message, 100),
}
+
+ ofc.connections[endpoint] = connection
}
- // If the child context exists, then cancel it
- if ofDone != nil {
- logger.Debugw("closing-child-processes",
- log.Fields{"device-id": ofc.DeviceID})
- ofDone()
- }
-
- // If the connection is open, then close it
- if ofc.conn != nil {
- logger.Debugw("closing-of-connection",
- log.Fields{"device-id": ofc.DeviceID})
- ofc.conn.Close()
- ofc.conn = nil
- }
- logger.Debugw("state-machine-finished",
- log.Fields{"device-id": ofc.DeviceID})
-}
-
-// processOFStream processes the OF connection from the controller and invokes
-// the appropriate handler methods for each message.
-func (ofc *OFClient) processOFStream(ctx context.Context) {
- fromController := bufio.NewReader(ofc.conn)
-
- /*
- * We have a read buffer of a max size of 4096, so if we ever have
- * a message larger than this then we will have issues
- */
- headerBuf := make([]byte, 8)
-
-top:
- // Continue until we are told to stop
- for {
- select {
- case <-ctx.Done():
- logger.Error("of-loop-ending-context-done")
- break top
- default:
- // Read 8 bytes, the standard OF header
- read, err := io.ReadFull(fromController, headerBuf)
- if err != nil {
- logger.Errorw("bad-of-header",
- log.Fields{
- "byte-count": read,
- "device-id": ofc.DeviceID,
- "error": err})
- break top
- }
-
- // Decode the header
- peek, err := ofc.peekAtOFHeader(headerBuf)
- if err != nil {
- /*
- * Header is bad, assume stream is corrupted
- * and needs to be restarted
- */
- logger.Errorw("bad-of-packet",
- log.Fields{
- "device-id": ofc.DeviceID,
- "error": err})
- break top
- }
-
- // Calculate the size of the rest of the packet and read it
- need := int(peek.GetLength())
- messageBuf := make([]byte, need)
- copy(messageBuf, headerBuf)
- read, err = io.ReadFull(fromController, messageBuf[8:])
- if err != nil {
- logger.Errorw("bad-of-packet",
- log.Fields{
- "byte-count": read,
- "device-id": ofc.DeviceID,
- "error": err})
- break top
- }
-
- // Decode and process the packet
- decoder := goloxi.NewDecoder(messageBuf)
- msg, err := ofp.DecodeHeader(decoder)
- if err != nil {
- // nolint: staticcheck
- js, _ := json.Marshal(decoder)
- logger.Errorw("failed-to-decode",
- log.Fields{
- "device-id": ofc.DeviceID,
- "decoder": js,
- "error": err})
- break top
- }
- if logger.V(log.DebugLevel) {
- js, _ := json.Marshal(msg)
- logger.Debugw("packet-header",
- log.Fields{
- "device-id": ofc.DeviceID,
- "header": js})
- }
- ofc.parseHeader(msg)
- }
- }
- logger.Debugw("end-of-stream",
- log.Fields{"device-id": ofc.DeviceID})
- ofc.events <- ofcEventDisconnect
-}
-
-func (ofc *OFClient) sayHello() {
- hello := ofp.NewHello()
- hello.Xid = uint32(GetXid())
- elem := ofp.NewHelloElemVersionbitmap()
- elem.SetType(ofp.OFPHETVersionbitmap)
- elem.SetLength(8)
- elem.SetBitmaps([]*ofp.Uint32{{Value: 16}})
- hello.SetElements([]ofp.IHelloElem{elem})
- if logger.V(log.DebugLevel) {
- js, _ := json.Marshal(hello)
- logger.Debugw("sayHello Called",
- log.Fields{
- "device-id": ofc.DeviceID,
- "hello-message": js})
- }
- if err := ofc.SendMessage(hello); err != nil {
- logger.Fatalw("Failed saying hello to Openflow Server, unable to proceed",
- log.Fields{
- "device-id": ofc.DeviceID,
- "error": err})
+ for _, connection := range ofc.connections {
+ go connection.Run(ctx)
}
}
-func (ofc *OFClient) parseHeader(header ofp.IHeader) {
- headerType := header.GetType()
- logger.Debugw("packet-header-type",
- log.Fields{
- "header-type": ofp.Type(headerType).String()})
- switch headerType {
- case ofp.OFPTHello:
- //x := header.(*ofp.Hello)
- case ofp.OFPTError:
- go ofc.handleErrMsg(header.(*ofp.ErrorMsg))
- case ofp.OFPTEchoRequest:
- go ofc.handleEchoRequest(header.(*ofp.EchoRequest))
- case ofp.OFPTEchoReply:
- case ofp.OFPTExperimenter:
- case ofp.OFPTFeaturesRequest:
- go func() {
- if err := ofc.handleFeatureRequest(header.(*ofp.FeaturesRequest)); err != nil {
- logger.Errorw("handle-feature-request", log.Fields{"error": err})
- }
- }()
- case ofp.OFPTFeaturesReply:
- case ofp.OFPTGetConfigRequest:
- go ofc.handleGetConfigRequest(header.(*ofp.GetConfigRequest))
- case ofp.OFPTGetConfigReply:
- case ofp.OFPTSetConfig:
- go ofc.handleSetConfig(header.(*ofp.SetConfig))
- case ofp.OFPTPacketIn:
- case ofp.OFPTFlowRemoved:
- case ofp.OFPTPortStatus:
- case ofp.OFPTPacketOut:
- go ofc.handlePacketOut(header.(*ofp.PacketOut))
- case ofp.OFPTFlowMod:
- /*
- * Not using go routine to handle flow* messages or barrier requests
- * onos typically issues barrier requests just before a flow* message.
- * by handling in this thread I ensure all flow* are handled when barrier
- * request is issued.
- */
- switch header.(ofp.IFlowMod).GetCommand() {
- case ofp.OFPFCAdd:
- ofc.handleFlowAdd(header.(*ofp.FlowAdd))
- case ofp.OFPFCModify:
- ofc.handleFlowMod(header.(*ofp.FlowMod))
- case ofp.OFPFCModifyStrict:
- ofc.handleFlowModStrict(header.(*ofp.FlowModifyStrict))
- case ofp.OFPFCDelete:
- ofc.handleFlowDelete(header.(*ofp.FlowDelete))
- case ofp.OFPFCDeleteStrict:
- ofc.handleFlowDeleteStrict(header.(*ofp.FlowDeleteStrict))
- }
- case ofp.OFPTStatsRequest:
- go func() {
- if err := ofc.handleStatsRequest(header, header.(ofp.IStatsRequest).GetStatsType()); err != nil {
- logger.Errorw("ofpt-stats-request", log.Fields{"error": err})
- }
- }()
- case ofp.OFPTBarrierRequest:
- /* See note above at case ofp.OFPTFlowMod:*/
- ofc.handleBarrierRequest(header.(*ofp.BarrierRequest))
- case ofp.OFPTRoleRequest:
- go ofc.handleRoleRequest(header.(*ofp.RoleRequest))
- case ofp.OFPTMeterMod:
- ofc.handleMeterModRequest(header.(*ofp.MeterMod))
- }
-}
-
-// Message interface that represents an open flow message and enables for a
-// unified implementation of SendMessage
-type Message interface {
- Serialize(encoder *goloxi.Encoder) error
-}
-
-func (ofc *OFClient) doSend(msg Message) error {
- if ofc.conn == nil {
- return errors.New("no-connection")
- }
- enc := goloxi.NewEncoder()
- if err := msg.Serialize(enc); err != nil {
- return err
- }
-
- bytes := enc.Bytes()
- if _, err := ofc.conn.Write(bytes); err != nil {
- logger.Errorw("unable-to-send-message-to-controller",
- log.Fields{
- "device-id": ofc.DeviceID,
- "message": msg,
- "error": err})
- return err
- }
- return nil
-}
-
-func (ofc *OFClient) messageSender(ctx context.Context) {
- // first process last fail if it exists
- if ofc.lastUnsentMessage != nil {
- if err := ofc.doSend(ofc.lastUnsentMessage); err != nil {
- ofc.events <- ofcEventDisconnect
- return
- }
- ofc.lastUnsentMessage = nil
- }
-top:
- for {
- select {
- case <-ctx.Done():
- break top
- case msg := <-ofc.sendChannel:
- if err := ofc.doSend(msg); err != nil {
- ofc.lastUnsentMessage = msg
- ofc.events <- ofcEventDisconnect
- logger.Debugw("message-sender-error",
- log.Fields{
- "device-id": ofc.DeviceID,
- "error": err.Error()})
- break top
- }
- logger.Debugw("message-sender-send",
- log.Fields{
- "device-id": ofc.DeviceID})
- ofc.lastUnsentMessage = nil
- }
- }
-
- logger.Debugw("message-sender-finished",
- log.Fields{
- "device-id": ofc.DeviceID})
-}
-
-// SendMessage queues a message to be sent to the openflow controller
func (ofc *OFClient) SendMessage(message Message) error {
- logger.Debug("queuing-message")
- ofc.sendChannel <- message
+ for _, connection := range ofc.connections {
+ if connection.role == ofcRoleMaster || connection.role == ofcRoleEqual {
+ err := connection.SendMessage(message)
+ if err != nil {
+ return err
+ }
+ }
+ }
return nil
}
diff --git a/internal/pkg/openflow/connection.go b/internal/pkg/openflow/connection.go
new file mode 100644
index 0000000..7d57d34
--- /dev/null
+++ b/internal/pkg/openflow/connection.go
@@ -0,0 +1,480 @@
+/*
+ Copyright 2020 the original author or authors.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+package openflow
+
+import (
+ "bufio"
+ "context"
+ "encoding/binary"
+ "encoding/json"
+ "errors"
+ "github.com/donNewtonAlpha/goloxi"
+ ofp "github.com/donNewtonAlpha/goloxi/of13"
+ "github.com/opencord/voltha-lib-go/v3/pkg/log"
+ "github.com/opencord/voltha-protos/v3/go/voltha"
+ "io"
+ "net"
+ "time"
+)
+
+type OFConnection struct {
+ OFControllerEndPoint string
+ DeviceID string
+ VolthaClient voltha.VolthaServiceClient
+ PacketOutChannel chan *voltha.PacketOut
+ ConnectionMaxRetries int
+ ConnectionRetryDelay time.Duration
+
+ conn net.Conn
+
+ // current role of this connection
+ role ofcRole
+ roleManager RoleManager
+
+ events chan ofcEvent
+ sendChannel chan Message
+ lastUnsentMessage Message
+}
+
+func (ofc *OFConnection) peekAtOFHeader(buf []byte) (ofp.IHeader, error) {
+ header := ofp.Header{}
+ header.Version = uint8(buf[0])
+ header.Type = uint8(buf[1])
+ header.Length = binary.BigEndian.Uint16(buf[2:4])
+ header.Xid = binary.BigEndian.Uint32(buf[4:8])
+
+ // TODO: add minimal validation of version and type
+
+ return &header, nil
+}
+
+func (ofc *OFConnection) establishConnectionToController() error {
+ if ofc.conn != nil {
+ logger.Debugw("closing-of-connection-to-reconnect",
+ log.Fields{"device-id": ofc.DeviceID})
+ ofc.conn.Close()
+ ofc.conn = nil
+ }
+ try := 1
+ for ofc.ConnectionMaxRetries == 0 || try < ofc.ConnectionMaxRetries {
+ if raddr, err := net.ResolveTCPAddr("tcp", ofc.OFControllerEndPoint); err != nil {
+ logger.Debugw("openflow-client unable to resolve endpoint",
+ log.Fields{
+ "device-id": ofc.DeviceID,
+ "endpoint": ofc.OFControllerEndPoint})
+ } else {
+ if connection, err := net.DialTCP("tcp", nil, raddr); err == nil {
+ ofc.conn = connection
+ ofc.sayHello()
+ ofc.events <- ofcEventConnect
+ return nil
+ } else {
+ logger.Warnw("openflow-client-connect-error",
+ log.Fields{
+ "device-id": ofc.DeviceID,
+ "endpoint": ofc.OFControllerEndPoint})
+ }
+ }
+ if ofc.ConnectionMaxRetries == 0 || try < ofc.ConnectionMaxRetries {
+ if ofc.ConnectionMaxRetries != 0 {
+ try += 1
+ }
+ time.Sleep(ofc.ConnectionRetryDelay)
+ }
+ }
+ return errors.New("failed-to-connect-to-of-controller")
+}
+
+// Run implements the state machine for the OF client reacting to state change
+// events and invoking actions as a reaction to those state changes
+func (ofc *OFConnection) Run(ctx context.Context) {
+
+ var ofCtx context.Context
+ var ofDone func()
+ state := ofcStateCreated
+ ofc.events <- ofcEventStart
+top:
+ for {
+ select {
+ case <-ctx.Done():
+ state = ofcStateStopped
+ logger.Debugw("state-transition-context-done",
+ log.Fields{"device-id": ofc.DeviceID})
+ break top
+ case event := <-ofc.events:
+ previous := state
+ switch event {
+ case ofcEventStart:
+ logger.Debugw("ofc-event-start",
+ log.Fields{"device-id": ofc.DeviceID})
+ if state == ofcStateCreated {
+ state = ofcStateStarted
+ logger.Debug("STARTED MORE THAN ONCE")
+ go func() {
+ if err := ofc.establishConnectionToController(); err != nil {
+ logger.Errorw("controller-connection-failed", log.Fields{"error": err})
+ panic(err)
+ }
+ }()
+ } else {
+ logger.Errorw("illegal-state-transition",
+ log.Fields{
+ "device-id": ofc.DeviceID,
+ "current-state": state.String(),
+ "event": event.String()})
+ }
+ case ofcEventConnect:
+ logger.Debugw("ofc-event-connected",
+ log.Fields{"device-id": ofc.DeviceID})
+ if state == ofcStateStarted || state == ofcStateDisconnected {
+ state = ofcStateConnected
+ ofCtx, ofDone = context.WithCancel(context.Background())
+ go ofc.messageSender(ofCtx)
+ go ofc.processOFStream(ofCtx)
+ } else {
+ logger.Errorw("illegal-state-transition",
+ log.Fields{
+ "device-id": ofc.DeviceID,
+ "current-state": state.String(),
+ "event": event.String()})
+ }
+ case ofcEventDisconnect:
+ logger.Debugw("ofc-event-disconnected",
+ log.Fields{
+ "device-id": ofc.DeviceID,
+ "state": state.String()})
+ if state == ofcStateConnected {
+ state = ofcStateDisconnected
+ if ofDone != nil {
+ ofDone()
+ ofDone = nil
+ }
+ go func() {
+ if err := ofc.establishConnectionToController(); err != nil {
+ log.Errorw("controller-connection-failed", log.Fields{"error": err})
+ panic(err)
+ }
+ }()
+ } else {
+ logger.Errorw("illegal-state-transition",
+ log.Fields{
+ "device-id": ofc.DeviceID,
+ "current-state": state.String(),
+ "event": event.String()})
+ }
+ case ofcEventStop:
+ logger.Debugw("ofc-event-stop",
+ log.Fields{"device-id": ofc.DeviceID})
+ if state == ofcStateCreated || state == ofcStateConnected || state == ofcStateDisconnected {
+ state = ofcStateStopped
+ break top
+ } else {
+ logger.Errorw("illegal-state-transition",
+ log.Fields{
+ "device-id": ofc.DeviceID,
+ "current-state": state.String(),
+ "event": event.String()})
+ }
+ }
+ logger.Debugw("state-transition",
+ log.Fields{
+ "device-id": ofc.DeviceID,
+ "previous-state": previous.String(),
+ "current-state": state.String(),
+ "event": event.String()})
+ }
+ }
+
+ // If the child context exists, then cancel it
+ if ofDone != nil {
+ log.Debugw("closing-child-processes",
+ log.Fields{"device-id": ofc.DeviceID})
+ ofDone()
+ }
+
+ // If the connection is open, then close it
+ if ofc.conn != nil {
+ log.Debugw("closing-of-connection",
+ log.Fields{"device-id": ofc.DeviceID})
+ ofc.conn.Close()
+ ofc.conn = nil
+ }
+ log.Debugw("state-machine-finished",
+ log.Fields{"device-id": ofc.DeviceID})
+}
+
+// processOFStream processes the OF connection from the controller and invokes
+// the appropriate handler methods for each message.
+func (ofc *OFConnection) processOFStream(ctx context.Context) {
+ fromController := bufio.NewReader(ofc.conn)
+
+ /*
+ * We have a read buffer of a max size of 4096, so if we ever have
+ * a message larger than this then we will have issues
+ */
+ headerBuf := make([]byte, 8)
+
+top:
+ // Continue until we are told to stop
+ for {
+ select {
+ case <-ctx.Done():
+ logger.Error("of-loop-ending-context-done")
+ break top
+ default:
+ // Read 8 bytes, the standard OF header
+ read, err := io.ReadFull(fromController, headerBuf)
+ if err != nil {
+ logger.Errorw("bad-of-header",
+ log.Fields{
+ "byte-count": read,
+ "device-id": ofc.DeviceID,
+ "error": err})
+ break top
+ }
+
+ // Decode the header
+ peek, err := ofc.peekAtOFHeader(headerBuf)
+ if err != nil {
+ /*
+ * Header is bad, assume stream is corrupted
+ * and needs to be restarted
+ */
+ logger.Errorw("bad-of-packet",
+ log.Fields{
+ "device-id": ofc.DeviceID,
+ "error": err})
+ break top
+ }
+
+ // Calculate the size of the rest of the packet and read it
+ need := int(peek.GetLength())
+ messageBuf := make([]byte, need)
+ copy(messageBuf, headerBuf)
+ read, err = io.ReadFull(fromController, messageBuf[8:])
+ if err != nil {
+ logger.Errorw("bad-of-packet",
+ log.Fields{
+ "byte-count": read,
+ "device-id": ofc.DeviceID,
+ "error": err})
+ break top
+ }
+
+ // Decode and process the packet
+ decoder := goloxi.NewDecoder(messageBuf)
+ msg, err := ofp.DecodeHeader(decoder)
+ if err != nil {
+ // nolint: staticcheck
+ js, _ := json.Marshal(decoder)
+ logger.Errorw("failed-to-decode",
+ log.Fields{
+ "device-id": ofc.DeviceID,
+ "decoder": js,
+ "error": err})
+ break top
+ }
+ if logger.V(log.DebugLevel) {
+ js, _ := json.Marshal(msg)
+ logger.Debugw("packet-header",
+ log.Fields{
+ "device-id": ofc.DeviceID,
+ "header": js})
+ }
+ ofc.parseHeader(msg)
+ }
+ }
+ logger.Debugw("end-of-stream",
+ log.Fields{"device-id": ofc.DeviceID})
+ ofc.events <- ofcEventDisconnect
+}
+
+func (ofc *OFConnection) sayHello() {
+ hello := ofp.NewHello()
+ hello.Xid = uint32(GetXid())
+ elem := ofp.NewHelloElemVersionbitmap()
+ elem.SetType(ofp.OFPHETVersionbitmap)
+ elem.SetLength(8)
+ elem.SetBitmaps([]*ofp.Uint32{{Value: 16}})
+ hello.SetElements([]ofp.IHelloElem{elem})
+ if logger.V(log.DebugLevel) {
+ js, _ := json.Marshal(hello)
+ logger.Debugw("sayHello Called",
+ log.Fields{
+ "device-id": ofc.DeviceID,
+ "hello-message": js})
+ }
+ if err := ofc.SendMessage(hello); err != nil {
+ logger.Fatalw("Failed saying hello to Openflow Server, unable to proceed",
+ log.Fields{
+ "device-id": ofc.DeviceID,
+ "error": err})
+ }
+}
+
+func (ofc *OFConnection) parseHeader(header ofp.IHeader) {
+ headerType := header.GetType()
+ logger.Debugw("packet-header-type",
+ log.Fields{
+ "header-type": ofp.Type(headerType).String()})
+ switch headerType {
+ case ofp.OFPTHello:
+ //x := header.(*ofp.Hello)
+ case ofp.OFPTError:
+ go ofc.handleErrMsg(header.(*ofp.ErrorMsg))
+ case ofp.OFPTEchoRequest:
+ go ofc.handleEchoRequest(header.(*ofp.EchoRequest))
+ case ofp.OFPTEchoReply:
+ case ofp.OFPTExperimenter:
+ case ofp.OFPTFeaturesRequest:
+ go func() {
+ if err := ofc.handleFeatureRequest(header.(*ofp.FeaturesRequest)); err != nil {
+ logger.Errorw("handle-feature-request", log.Fields{"error": err})
+ }
+ }()
+ case ofp.OFPTFeaturesReply:
+ case ofp.OFPTGetConfigRequest:
+ go ofc.handleGetConfigRequest(header.(*ofp.GetConfigRequest))
+ case ofp.OFPTGetConfigReply:
+ case ofp.OFPTSetConfig:
+ go ofc.handleSetConfig(header.(*ofp.SetConfig))
+ case ofp.OFPTPacketIn:
+ case ofp.OFPTFlowRemoved:
+ case ofp.OFPTPortStatus:
+ case ofp.OFPTPacketOut:
+ if !(ofc.role == ofcRoleMaster || ofc.role == ofcRoleEqual) {
+ ofc.sendRoleSlaveError(header)
+ return
+ }
+ go ofc.handlePacketOut(header.(*ofp.PacketOut))
+ case ofp.OFPTFlowMod:
+ if !(ofc.role == ofcRoleMaster || ofc.role == ofcRoleEqual) {
+ ofc.sendRoleSlaveError(header)
+ return
+ }
+ /*
+ * Not using go routine to handle flow* messages or barrier requests
+ * onos typically issues barrier requests just before a flow* message.
+ * by handling in this thread I ensure all flow* are handled when barrier
+ * request is issued.
+ */
+ switch header.(ofp.IFlowMod).GetCommand() {
+ case ofp.OFPFCAdd:
+ ofc.handleFlowAdd(header.(*ofp.FlowAdd))
+ case ofp.OFPFCModify:
+ ofc.handleFlowMod(header.(*ofp.FlowMod))
+ case ofp.OFPFCModifyStrict:
+ ofc.handleFlowModStrict(header.(*ofp.FlowModifyStrict))
+ case ofp.OFPFCDelete:
+ ofc.handleFlowDelete(header.(*ofp.FlowDelete))
+ case ofp.OFPFCDeleteStrict:
+ ofc.handleFlowDeleteStrict(header.(*ofp.FlowDeleteStrict))
+ }
+ case ofp.OFPTStatsRequest:
+ go func() {
+ if err := ofc.handleStatsRequest(header, header.(ofp.IStatsRequest).GetStatsType()); err != nil {
+ logger.Errorw("ofpt-stats-request", log.Fields{"error": err})
+ }
+ }()
+ case ofp.OFPTBarrierRequest:
+ /* See note above at case ofp.OFPTFlowMod:*/
+ ofc.handleBarrierRequest(header.(*ofp.BarrierRequest))
+ case ofp.OFPTRoleRequest:
+ go ofc.handleRoleRequest(header.(*ofp.RoleRequest))
+ case ofp.OFPTMeterMod:
+ if !(ofc.role == ofcRoleMaster || ofc.role == ofcRoleEqual) {
+ ofc.sendRoleSlaveError(header)
+ return
+ }
+ ofc.handleMeterModRequest(header.(*ofp.MeterMod))
+ case ofp.OFPTGroupMod:
+ if !(ofc.role == ofcRoleMaster || ofc.role == ofcRoleEqual) {
+ ofc.sendRoleSlaveError(header)
+ return
+ }
+ // TODO handle group mods
+ }
+}
+
+// Message interface that represents an open flow message and enables for a
+// unified implementation of SendMessage
+type Message interface {
+ Serialize(encoder *goloxi.Encoder) error
+}
+
+func (ofc *OFConnection) doSend(msg Message) error {
+ if ofc.conn == nil {
+ return errors.New("no-connection")
+ }
+ enc := goloxi.NewEncoder()
+ if err := msg.Serialize(enc); err != nil {
+ return err
+ }
+
+ bytes := enc.Bytes()
+ if _, err := ofc.conn.Write(bytes); err != nil {
+ logger.Errorw("unable-to-send-message-to-controller",
+ log.Fields{
+ "device-id": ofc.DeviceID,
+ "message": msg,
+ "error": err})
+ return err
+ }
+ return nil
+}
+
+func (ofc *OFConnection) messageSender(ctx context.Context) {
+ // first process last fail if it exists
+ if ofc.lastUnsentMessage != nil {
+ if err := ofc.doSend(ofc.lastUnsentMessage); err != nil {
+ ofc.events <- ofcEventDisconnect
+ return
+ }
+ ofc.lastUnsentMessage = nil
+ }
+top:
+ for {
+ select {
+ case <-ctx.Done():
+ break top
+ case msg := <-ofc.sendChannel:
+ if err := ofc.doSend(msg); err != nil {
+ ofc.lastUnsentMessage = msg
+ ofc.events <- ofcEventDisconnect
+ logger.Debugw("message-sender-error",
+ log.Fields{
+ "device-id": ofc.DeviceID,
+ "error": err.Error()})
+ break top
+ }
+ logger.Debugw("message-sender-send",
+ log.Fields{
+ "device-id": ofc.DeviceID})
+ ofc.lastUnsentMessage = nil
+ }
+ }
+
+ logger.Debugw("message-sender-finished",
+ log.Fields{
+ "device-id": ofc.DeviceID})
+}
+
+// SendMessage queues a message to be sent to the openflow controller
+func (ofc *OFConnection) SendMessage(message Message) error {
+ logger.Debug("queuing-message")
+ ofc.sendChannel <- message
+ return nil
+}
diff --git a/internal/pkg/openflow/echo.go b/internal/pkg/openflow/echo.go
index af850a4..7358a0f 100644
--- a/internal/pkg/openflow/echo.go
+++ b/internal/pkg/openflow/echo.go
@@ -22,7 +22,7 @@
"github.com/opencord/voltha-lib-go/v3/pkg/log"
)
-func (ofc *OFClient) handleEchoRequest(request *ofp.EchoRequest) {
+func (ofc *OFConnection) handleEchoRequest(request *ofp.EchoRequest) {
if logger.V(log.DebugLevel) {
js, _ := json.Marshal(request)
logger.Debugw("handleEchoRequest called",
diff --git a/internal/pkg/openflow/error.go b/internal/pkg/openflow/error.go
index 3a70b93..0472ad8 100644
--- a/internal/pkg/openflow/error.go
+++ b/internal/pkg/openflow/error.go
@@ -22,7 +22,7 @@
"github.com/opencord/voltha-lib-go/v3/pkg/log"
)
-func (ofc *OFClient) handleErrMsg(message ofp.IErrorMsg) {
+func (ofc *OFConnection) handleErrMsg(message ofp.IErrorMsg) {
if logger.V(log.DebugLevel) {
js, _ := json.Marshal(message)
logger.Debugw("handleErrMsg called",
diff --git a/internal/pkg/openflow/feature.go b/internal/pkg/openflow/feature.go
index 5eb8fa0..82353db 100644
--- a/internal/pkg/openflow/feature.go
+++ b/internal/pkg/openflow/feature.go
@@ -24,7 +24,7 @@
"github.com/opencord/voltha-protos/v3/go/common"
)
-func (ofc *OFClient) handleFeatureRequest(request *ofp.FeaturesRequest) error {
+func (ofc *OFConnection) handleFeatureRequest(request *ofp.FeaturesRequest) error {
if logger.V(log.DebugLevel) {
js, _ := json.Marshal(request)
logger.Debugw("handleFeatureRequest called",
diff --git a/internal/pkg/openflow/flowMod.go b/internal/pkg/openflow/flowMod.go
index cabcfc2..114a012 100644
--- a/internal/pkg/openflow/flowMod.go
+++ b/internal/pkg/openflow/flowMod.go
@@ -71,7 +71,7 @@
"vlan_vid_masked": 200, //made up
}
-func (ofc *OFClient) handleFlowAdd(flowAdd *ofp.FlowAdd) {
+func (ofc *OFConnection) handleFlowAdd(flowAdd *ofp.FlowAdd) {
if logger.V(log.DebugLevel) {
js, _ := json.Marshal(flowAdd)
logger.Debugw("handleFlowAdd called",
@@ -265,7 +265,7 @@
}
}
-func (ofc *OFClient) handleFlowMod(flowMod *ofp.FlowMod) {
+func (ofc *OFConnection) handleFlowMod(flowMod *ofp.FlowMod) {
if logger.V(log.DebugLevel) {
js, _ := json.Marshal(flowMod)
logger.Debugw("handleFlowMod called",
@@ -277,7 +277,7 @@
log.Fields{"device-id": ofc.DeviceID})
}
-func (ofc *OFClient) handleFlowModStrict(flowModStrict *ofp.FlowModifyStrict) {
+func (ofc *OFConnection) handleFlowModStrict(flowModStrict *ofp.FlowModifyStrict) {
if logger.V(log.DebugLevel) {
js, _ := json.Marshal(flowModStrict)
logger.Debugw("handleFlowModStrict called",
@@ -289,7 +289,7 @@
log.Fields{"device-id": ofc.DeviceID})
}
-func (ofc *OFClient) handleFlowDelete(flowDelete *ofp.FlowDelete) {
+func (ofc *OFConnection) handleFlowDelete(flowDelete *ofp.FlowDelete) {
if logger.V(log.DebugLevel) {
js, _ := json.Marshal(flowDelete)
logger.Debugw("handleFlowDelete called",
@@ -302,7 +302,7 @@
}
-func (ofc *OFClient) handleFlowDeleteStrict(flowDeleteStrict *ofp.FlowDeleteStrict) {
+func (ofc *OFConnection) handleFlowDeleteStrict(flowDeleteStrict *ofp.FlowDeleteStrict) {
if logger.V(log.DebugLevel) {
js, _ := json.Marshal(flowDeleteStrict)
logger.Debugw("handleFlowDeleteStrict called",
diff --git a/internal/pkg/openflow/getConfig.go b/internal/pkg/openflow/getConfig.go
index 19efdf4..6425246 100644
--- a/internal/pkg/openflow/getConfig.go
+++ b/internal/pkg/openflow/getConfig.go
@@ -22,7 +22,7 @@
"github.com/opencord/voltha-lib-go/v3/pkg/log"
)
-func (ofc *OFClient) handleGetConfigRequest(request *ofp.GetConfigRequest) {
+func (ofc *OFConnection) handleGetConfigRequest(request *ofp.GetConfigRequest) {
if logger.V(log.DebugLevel) {
js, _ := json.Marshal(request)
logger.Debugw("handleGetConfigRequest called",
diff --git a/internal/pkg/openflow/meter.go b/internal/pkg/openflow/meter.go
index 61ded75..c8ee22c 100644
--- a/internal/pkg/openflow/meter.go
+++ b/internal/pkg/openflow/meter.go
@@ -23,7 +23,7 @@
"golang.org/x/net/context"
)
-func (ofc *OFClient) handleMeterModRequest(request *ofp.MeterMod) {
+func (ofc *OFConnection) handleMeterModRequest(request *ofp.MeterMod) {
if logger.V(log.DebugLevel) {
js, _ := json.Marshal(request)
logger.Debugw("handleMeterModRequest called",
diff --git a/internal/pkg/openflow/packet.go b/internal/pkg/openflow/packet.go
index 622ff0d..7596d4a 100644
--- a/internal/pkg/openflow/packet.go
+++ b/internal/pkg/openflow/packet.go
@@ -23,7 +23,7 @@
"github.com/opencord/voltha-protos/v3/go/voltha"
)
-func (ofc *OFClient) handlePacketOut(packetOut *ofp.PacketOut) {
+func (ofc *OFConnection) handlePacketOut(packetOut *ofp.PacketOut) {
if logger.V(log.DebugLevel) {
js, _ := json.Marshal(packetOut)
logger.Debugw("handlePacketOut called",
diff --git a/internal/pkg/openflow/role.go b/internal/pkg/openflow/role.go
index 3a123e8..6d86fe9 100644
--- a/internal/pkg/openflow/role.go
+++ b/internal/pkg/openflow/role.go
@@ -18,11 +18,12 @@
import (
"encoding/json"
+ "github.com/donNewtonAlpha/goloxi"
ofp "github.com/donNewtonAlpha/goloxi/of13"
"github.com/opencord/voltha-lib-go/v3/pkg/log"
)
-func (ofc *OFClient) handleRoleRequest(request *ofp.RoleRequest) {
+func (ofc *OFConnection) handleRoleRequest(request *ofp.RoleRequest) {
if logger.V(log.DebugLevel) {
js, _ := json.Marshal(request)
logger.Debugw("handleRoleRequest called",
@@ -30,13 +31,67 @@
"device-id": ofc.DeviceID,
"request": js})
}
- reply := ofp.NewRoleReply()
+
+ if request.Role == ofp.OFPCRRoleNochange {
+ reply := ofp.NewRoleReply()
+ reply.SetXid(request.GetXid())
+ reply.SetVersion(request.GetVersion())
+ reply.SetRole(ofp.ControllerRole(ofc.role))
+ reply.SetGenerationId(request.GetGenerationId())
+ if err := ofc.SendMessage(reply); err != nil {
+ logger.Errorw("handle-role-request-send-message", log.Fields{
+ "device-id": ofc.DeviceID,
+ "error": err})
+ }
+ }
+
+ ok := ofc.roleManager.UpdateRoles(ofc.OFControllerEndPoint, request)
+
+ if ok {
+ reply := ofp.NewRoleReply()
+ reply.SetXid(request.GetXid())
+ reply.SetVersion(request.GetVersion())
+ reply.SetRole(request.GetRole())
+ reply.SetGenerationId(request.GetGenerationId())
+ if err := ofc.SendMessage(reply); err != nil {
+ logger.Errorw("handle-role-request-send-message", log.Fields{
+ "device-id": ofc.DeviceID,
+ "error": err})
+ }
+ } else {
+ reply := ofp.NewRoleRequestFailedErrorMsg()
+ reply.SetXid(request.GetXid())
+ reply.SetVersion(request.GetVersion())
+ reply.Code = ofp.OFPRRFCStale
+
+ enc := goloxi.NewEncoder()
+ err := request.Serialize(enc)
+ if err == nil {
+ reply.Data = enc.Bytes()
+ }
+
+ if err := ofc.SendMessage(reply); err != nil {
+ logger.Errorw("handle-role-request-send-message", log.Fields{
+ "device-id": ofc.DeviceID,
+ "error": err})
+ }
+ }
+}
+
+func (ofc *OFConnection) sendRoleSlaveError(request ofp.IHeader) {
+ reply := ofp.NewBadRequestErrorMsg()
reply.SetXid(request.GetXid())
reply.SetVersion(request.GetVersion())
- reply.SetRole(request.GetRole())
- reply.SetGenerationId(request.GetGenerationId())
+ reply.Code = ofp.OFPCRRoleSlave
+
+ enc := goloxi.NewEncoder()
+ err := request.Serialize(enc)
+ if err == nil {
+ reply.Data = enc.Bytes()
+ }
+
if err := ofc.SendMessage(reply); err != nil {
- logger.Errorw("handle-role-request-send-message", log.Fields{
+ logger.Errorw("send-role-slave-error", log.Fields{
"device-id": ofc.DeviceID,
"error": err})
}
diff --git a/internal/pkg/openflow/role_test.go b/internal/pkg/openflow/role_test.go
new file mode 100644
index 0000000..5eb3ba5
--- /dev/null
+++ b/internal/pkg/openflow/role_test.go
@@ -0,0 +1,160 @@
+/*
+ Copyright 2020 the original author or authors.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+package openflow
+
+import (
+ ofp "github.com/donNewtonAlpha/goloxi/of13"
+ "github.com/stretchr/testify/assert"
+ "testing"
+)
+
+type testRoleManager struct {
+ role ofp.ControllerRole
+ generationId uint64
+ from string
+
+ generateError bool
+}
+
+func (trm *testRoleManager) UpdateRoles(from string, request *ofp.RoleRequest) bool {
+ trm.from = from
+ trm.role = request.Role
+ trm.generationId = request.GenerationId
+
+ return !trm.generateError
+}
+
+func createOFClient() *OFClient {
+ endpoints := []string{"e1", "e2", "e3"}
+
+ // create a client object
+ ofclient := &OFClient{
+ OFControllerEndPoints: endpoints,
+ connections: make(map[string]*OFConnection),
+ }
+
+ // create a connection object for each endpoint
+ for _, ep := range endpoints {
+ conn := &OFConnection{OFControllerEndPoint: ep, role: ofcRoleNone}
+ ofclient.connections[ep] = conn
+ }
+
+ return ofclient
+}
+
+func createRoleRequest(role ofp.ControllerRole, genId uint64) *ofp.RoleRequest {
+ rr := ofp.NewRoleRequest()
+ rr.Role = role
+ rr.GenerationId = genId
+ return rr
+}
+
+func TestRoleChange(t *testing.T) {
+ endpoints := []string{"e1", "e2", "e3"}
+ ofclient := &OFClient{
+ OFControllerEndPoints: endpoints, connections: make(map[string]*OFConnection),
+ }
+
+ for _, ep := range endpoints {
+ conn := &OFConnection{OFControllerEndPoint: ep, role: ofcRoleNone}
+ ofclient.connections[ep] = conn
+ }
+
+ assert.Equal(t, ofclient.connections["e1"].role, ofcRoleNone)
+
+ // change role of e1 to master
+ rr := createRoleRequest(ofp.OFPCRRoleMaster, 1)
+
+ ok := ofclient.UpdateRoles("e1", rr)
+ assert.True(t, ok)
+ assert.Equal(t, ofclient.connections["e1"].role, ofcRoleMaster)
+
+ // change role of e2 to master
+ ok = ofclient.UpdateRoles("e2", rr)
+ assert.True(t, ok)
+ assert.Equal(t, ofclient.connections["e2"].role, ofcRoleMaster)
+ // e1 should now have reverted to slave
+ assert.Equal(t, ofclient.connections["e1"].role, ofcRoleSlave)
+
+ // change role of e2 to slave
+ rr = createRoleRequest(ofp.OFPCRRoleSlave, 1)
+
+ ok = ofclient.UpdateRoles("e2", rr)
+ assert.True(t, ok)
+ assert.Equal(t, ofclient.connections["e2"].role, ofcRoleSlave)
+}
+
+func TestStaleRoleRequest(t *testing.T) {
+ ofclient := createOFClient()
+
+ rr1 := createRoleRequest(ofp.OFPCRRoleMaster, 2)
+
+ ok := ofclient.UpdateRoles("e1", rr1)
+ assert.True(t, ok)
+ assert.Equal(t, ofclient.connections["e1"].role, ofcRoleMaster)
+
+ // 'stale' role request
+ rr2 := createRoleRequest(ofp.OFPCRRoleSlave, 1)
+
+ ok = ofclient.UpdateRoles("e1", rr2)
+ // should not have succeeded
+ assert.False(t, ok)
+ // role should remain master
+ assert.Equal(t, ofclient.connections["e1"].role, ofcRoleMaster)
+}
+
+func TestHandleRoleRequest(t *testing.T) {
+
+ trm := &testRoleManager{}
+
+ connection := &OFConnection{
+ OFControllerEndPoint: "e1",
+ roleManager: trm,
+ sendChannel: make(chan Message, 10),
+ }
+
+ rr := createRoleRequest(ofp.OFPCRRoleMaster, 1)
+
+ connection.handleRoleRequest(rr)
+
+ assert.Equal(t, "e1", trm.from)
+ assert.EqualValues(t, ofp.OFPCRRoleMaster, trm.role)
+ assert.EqualValues(t, 1, trm.generationId)
+
+ resp := (<-connection.sendChannel).(*ofp.RoleReply)
+
+ assert.EqualValues(t, resp.Role, ofp.OFPCRRoleMaster)
+}
+
+func TestHandleRoleRequestError(t *testing.T) {
+
+ trm := &testRoleManager{generateError: true}
+
+ connection := &OFConnection{
+ OFControllerEndPoint: "e1",
+ roleManager: trm,
+ sendChannel: make(chan Message, 10),
+ }
+
+ rr := createRoleRequest(ofp.OFPCRRoleMaster, 1)
+
+ connection.handleRoleRequest(rr)
+
+ resp := (<-connection.sendChannel).(*ofp.RoleRequestFailedErrorMsg)
+
+ assert.EqualValues(t, resp.Code, ofp.OFPRRFCStale)
+}
diff --git a/internal/pkg/openflow/setConfig.go b/internal/pkg/openflow/setConfig.go
index df48f5d..64be03f 100644
--- a/internal/pkg/openflow/setConfig.go
+++ b/internal/pkg/openflow/setConfig.go
@@ -22,7 +22,7 @@
"github.com/opencord/voltha-lib-go/v3/pkg/log"
)
-func (ofc *OFClient) handleSetConfig(request *ofp.SetConfig) {
+func (ofc *OFConnection) handleSetConfig(request *ofp.SetConfig) {
if logger.V(log.DebugLevel) {
js, _ := json.Marshal(request)
logger.Debugw("handleSetConfig called",
diff --git a/internal/pkg/openflow/stats.go b/internal/pkg/openflow/stats.go
index 520b5a2..86c06d6 100644
--- a/internal/pkg/openflow/stats.go
+++ b/internal/pkg/openflow/stats.go
@@ -28,7 +28,7 @@
"unsafe"
)
-func (ofc *OFClient) handleStatsRequest(request ofp.IHeader, statType uint16) error {
+func (ofc *OFConnection) handleStatsRequest(request ofp.IHeader, statType uint16) error {
if logger.V(log.DebugLevel) {
js, _ := json.Marshal(request)
logger.Debugw("handleStatsRequest called",
@@ -288,7 +288,7 @@
return nil
}
-func (ofc *OFClient) handleDescStatsRequest(request *ofp.DescStatsRequest) (*ofp.DescStatsReply, error) {
+func (ofc *OFConnection) handleDescStatsRequest(request *ofp.DescStatsRequest) (*ofp.DescStatsReply, error) {
if ofc.VolthaClient == nil {
return nil, NoVolthaConnectionError
}
@@ -312,7 +312,7 @@
return response, nil
}
-func (ofc *OFClient) handleFlowStatsRequest(request *ofp.FlowStatsRequest) (*ofp.FlowStatsReply, error) {
+func (ofc *OFConnection) handleFlowStatsRequest(request *ofp.FlowStatsRequest) (*ofp.FlowStatsReply, error) {
if ofc.VolthaClient == nil {
return nil, NoVolthaConnectionError
}
@@ -377,7 +377,7 @@
return response, nil
}
-func (ofc *OFClient) handleAggregateStatsRequest(request *ofp.AggregateStatsRequest) (*ofp.AggregateStatsReply, error) {
+func (ofc *OFConnection) handleAggregateStatsRequest(request *ofp.AggregateStatsRequest) (*ofp.AggregateStatsReply, error) {
response := ofp.NewAggregateStatsReply()
response.SetVersion(request.GetVersion())
response.SetXid(request.GetXid())
@@ -387,7 +387,7 @@
return response, nil
}
-func (ofc *OFClient) handleGroupStatsRequest(request *ofp.GroupStatsRequest) (*ofp.GroupStatsReply, error) {
+func (ofc *OFConnection) handleGroupStatsRequest(request *ofp.GroupStatsRequest) (*ofp.GroupStatsReply, error) {
if ofc.VolthaClient == nil {
return nil, NoVolthaConnectionError
}
@@ -425,7 +425,7 @@
return response, nil
}
-func (ofc *OFClient) handleGroupStatsDescRequest(request *ofp.GroupDescStatsRequest) (*ofp.GroupDescStatsReply, error) {
+func (ofc *OFConnection) handleGroupStatsDescRequest(request *ofp.GroupDescStatsRequest) (*ofp.GroupDescStatsReply, error) {
if ofc.VolthaClient == nil {
return nil, NoVolthaConnectionError
}
@@ -458,7 +458,7 @@
return response, nil
}
-func (ofc *OFClient) handleGroupFeatureStatsRequest(request *ofp.GroupFeaturesStatsRequest) (*ofp.GroupFeaturesStatsReply, error) {
+func (ofc *OFConnection) handleGroupFeatureStatsRequest(request *ofp.GroupFeaturesStatsRequest) (*ofp.GroupFeaturesStatsReply, error) {
response := ofp.NewGroupFeaturesStatsReply()
response.SetVersion(request.GetVersion())
response.SetXid(request.GetXid())
@@ -467,7 +467,7 @@
return response, nil
}
-func (ofc *OFClient) handleMeterStatsRequest(request *ofp.MeterStatsRequest) (*ofp.MeterStatsReply, error) {
+func (ofc *OFConnection) handleMeterStatsRequest(request *ofp.MeterStatsRequest) (*ofp.MeterStatsReply, error) {
if ofc.VolthaClient == nil {
return nil, NoVolthaConnectionError
}
@@ -509,7 +509,7 @@
return response, nil
}
-func (ofc *OFClient) handleMeterConfigStatsRequest(request *ofp.MeterConfigStatsRequest) (*ofp.MeterConfigStatsReply, error) {
+func (ofc *OFConnection) handleMeterConfigStatsRequest(request *ofp.MeterConfigStatsRequest) (*ofp.MeterConfigStatsReply, error) {
response := ofp.NewMeterConfigStatsReply()
response.SetVersion(request.GetVersion())
response.SetXid(request.GetXid())
@@ -518,7 +518,7 @@
return response, nil
}
-func (ofc *OFClient) handleTableFeaturesStatsRequest(request *ofp.TableFeaturesStatsRequest) (*ofp.TableFeaturesStatsReply, error) {
+func (ofc *OFConnection) handleTableFeaturesStatsRequest(request *ofp.TableFeaturesStatsRequest) (*ofp.TableFeaturesStatsReply, error) {
response := ofp.NewTableFeaturesStatsReply()
response.SetVersion(request.GetVersion())
response.SetXid(request.GetXid())
@@ -527,7 +527,7 @@
return response, nil
}
-func (ofc *OFClient) handleTableStatsRequest(request *ofp.TableStatsRequest) (*ofp.TableStatsReply, error) {
+func (ofc *OFConnection) handleTableStatsRequest(request *ofp.TableStatsRequest) (*ofp.TableStatsReply, error) {
var response = ofp.NewTableStatsReply()
response.SetFlags(ofp.StatsReplyFlags(request.GetFlags()))
response.SetVersion(request.GetVersion())
@@ -536,7 +536,7 @@
return response, nil
}
-func (ofc *OFClient) handleQueueStatsRequest(request *ofp.QueueStatsRequest) (*ofp.QueueStatsReply, error) {
+func (ofc *OFConnection) handleQueueStatsRequest(request *ofp.QueueStatsRequest) (*ofp.QueueStatsReply, error) {
response := ofp.NewQueueStatsReply()
response.SetVersion(request.GetVersion())
response.SetXid(request.GetXid())
@@ -545,7 +545,7 @@
return response, nil
}
-func (ofc *OFClient) handlePortStatsRequest(request *ofp.PortStatsRequest) (*ofp.PortStatsReply, error) {
+func (ofc *OFConnection) handlePortStatsRequest(request *ofp.PortStatsRequest) (*ofp.PortStatsReply, error) {
if ofc.VolthaClient == nil {
return nil, NoVolthaConnectionError
}
@@ -574,7 +574,7 @@
return response, nil
}
-func (ofc *OFClient) handlePortDescStatsRequest(request *ofp.PortDescStatsRequest) (*ofp.PortDescStatsReply, error) {
+func (ofc *OFConnection) handlePortDescStatsRequest(request *ofp.PortDescStatsRequest) (*ofp.PortDescStatsReply, error) {
if ofc.VolthaClient == nil {
return nil, NoVolthaConnectionError
}
@@ -618,7 +618,7 @@
}
-func (ofc *OFClient) handleMeterFeatureStatsRequest(request *ofp.MeterFeaturesStatsRequest) (*ofp.MeterFeaturesStatsReply, error) {
+func (ofc *OFConnection) handleMeterFeatureStatsRequest(request *ofp.MeterFeaturesStatsRequest) (*ofp.MeterFeaturesStatsReply, error) {
response := ofp.NewMeterFeaturesStatsReply()
response.SetXid(request.GetXid())
response.SetVersion(request.GetVersion())
@@ -633,7 +633,7 @@
return response, nil
}
-func (ofc *OFClient) handleExperimenterStatsRequest(request *ofp.ExperimenterStatsRequest) (*ofp.ExperimenterStatsReply, error) {
+func (ofc *OFConnection) handleExperimenterStatsRequest(request *ofp.ExperimenterStatsRequest) (*ofp.ExperimenterStatsReply, error) {
response := ofp.NewExperimenterStatsReply(request.GetExperimenter())
response.SetVersion(request.GetVersion())
response.SetXid(request.GetXid())
diff --git a/vendor/github.com/davecgh/go-spew/LICENSE b/vendor/github.com/davecgh/go-spew/LICENSE
new file mode 100644
index 0000000..bc52e96
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/LICENSE
@@ -0,0 +1,15 @@
+ISC License
+
+Copyright (c) 2012-2016 Dave Collins <dave@davec.name>
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/vendor/github.com/davecgh/go-spew/spew/bypass.go b/vendor/github.com/davecgh/go-spew/spew/bypass.go
new file mode 100644
index 0000000..7929947
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/bypass.go
@@ -0,0 +1,145 @@
+// Copyright (c) 2015-2016 Dave Collins <dave@davec.name>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when the code is not running on Google App Engine, compiled by GopherJS, and
+// "-tags safe" is not added to the go build command line. The "disableunsafe"
+// tag is deprecated and thus should not be used.
+// Go versions prior to 1.4 are disabled because they use a different layout
+// for interfaces which make the implementation of unsafeReflectValue more complex.
+// +build !js,!appengine,!safe,!disableunsafe,go1.4
+
+package spew
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+const (
+ // UnsafeDisabled is a build-time constant which specifies whether or
+ // not access to the unsafe package is available.
+ UnsafeDisabled = false
+
+ // ptrSize is the size of a pointer on the current arch.
+ ptrSize = unsafe.Sizeof((*byte)(nil))
+)
+
+type flag uintptr
+
+var (
+ // flagRO indicates whether the value field of a reflect.Value
+ // is read-only.
+ flagRO flag
+
+ // flagAddr indicates whether the address of the reflect.Value's
+ // value may be taken.
+ flagAddr flag
+)
+
+// flagKindMask holds the bits that make up the kind
+// part of the flags field. In all the supported versions,
+// it is in the lower 5 bits.
+const flagKindMask = flag(0x1f)
+
+// Different versions of Go have used different
+// bit layouts for the flags type. This table
+// records the known combinations.
+var okFlags = []struct {
+ ro, addr flag
+}{{
+ // From Go 1.4 to 1.5
+ ro: 1 << 5,
+ addr: 1 << 7,
+}, {
+ // Up to Go tip.
+ ro: 1<<5 | 1<<6,
+ addr: 1 << 8,
+}}
+
+var flagValOffset = func() uintptr {
+ field, ok := reflect.TypeOf(reflect.Value{}).FieldByName("flag")
+ if !ok {
+ panic("reflect.Value has no flag field")
+ }
+ return field.Offset
+}()
+
+// flagField returns a pointer to the flag field of a reflect.Value.
+func flagField(v *reflect.Value) *flag {
+ return (*flag)(unsafe.Pointer(uintptr(unsafe.Pointer(v)) + flagValOffset))
+}
+
+// unsafeReflectValue converts the passed reflect.Value into a one that bypasses
+// the typical safety restrictions preventing access to unaddressable and
+// unexported data. It works by digging the raw pointer to the underlying
+// value out of the protected value and generating a new unprotected (unsafe)
+// reflect.Value to it.
+//
+// This allows us to check for implementations of the Stringer and error
+// interfaces to be used for pretty printing ordinarily unaddressable and
+// inaccessible values such as unexported struct fields.
+func unsafeReflectValue(v reflect.Value) reflect.Value {
+ if !v.IsValid() || (v.CanInterface() && v.CanAddr()) {
+ return v
+ }
+ flagFieldPtr := flagField(&v)
+ *flagFieldPtr &^= flagRO
+ *flagFieldPtr |= flagAddr
+ return v
+}
+
+// Sanity checks against future reflect package changes
+// to the type or semantics of the Value.flag field.
+func init() {
+ field, ok := reflect.TypeOf(reflect.Value{}).FieldByName("flag")
+ if !ok {
+ panic("reflect.Value has no flag field")
+ }
+ if field.Type.Kind() != reflect.TypeOf(flag(0)).Kind() {
+ panic("reflect.Value flag field has changed kind")
+ }
+ type t0 int
+ var t struct {
+ A t0
+ // t0 will have flagEmbedRO set.
+ t0
+ // a will have flagStickyRO set
+ a t0
+ }
+ vA := reflect.ValueOf(t).FieldByName("A")
+ va := reflect.ValueOf(t).FieldByName("a")
+ vt0 := reflect.ValueOf(t).FieldByName("t0")
+
+ // Infer flagRO from the difference between the flags
+ // for the (otherwise identical) fields in t.
+ flagPublic := *flagField(&vA)
+ flagWithRO := *flagField(&va) | *flagField(&vt0)
+ flagRO = flagPublic ^ flagWithRO
+
+ // Infer flagAddr from the difference between a value
+ // taken from a pointer and not.
+ vPtrA := reflect.ValueOf(&t).Elem().FieldByName("A")
+ flagNoPtr := *flagField(&vA)
+ flagPtr := *flagField(&vPtrA)
+ flagAddr = flagNoPtr ^ flagPtr
+
+ // Check that the inferred flags tally with one of the known versions.
+ for _, f := range okFlags {
+ if flagRO == f.ro && flagAddr == f.addr {
+ return
+ }
+ }
+ panic("reflect.Value read-only flag has changed semantics")
+}
diff --git a/vendor/github.com/davecgh/go-spew/spew/bypasssafe.go b/vendor/github.com/davecgh/go-spew/spew/bypasssafe.go
new file mode 100644
index 0000000..205c28d
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/bypasssafe.go
@@ -0,0 +1,38 @@
+// Copyright (c) 2015-2016 Dave Collins <dave@davec.name>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when the code is running on Google App Engine, compiled by GopherJS, or
+// "-tags safe" is added to the go build command line. The "disableunsafe"
+// tag is deprecated and thus should not be used.
+// +build js appengine safe disableunsafe !go1.4
+
+package spew
+
+import "reflect"
+
+const (
+ // UnsafeDisabled is a build-time constant which specifies whether or
+ // not access to the unsafe package is available.
+ UnsafeDisabled = true
+)
+
+// unsafeReflectValue typically converts the passed reflect.Value into a one
+// that bypasses the typical safety restrictions preventing access to
+// unaddressable and unexported data. However, doing this relies on access to
+// the unsafe package. This is a stub version which simply returns the passed
+// reflect.Value when the unsafe package is not available.
+func unsafeReflectValue(v reflect.Value) reflect.Value {
+ return v
+}
diff --git a/vendor/github.com/davecgh/go-spew/spew/common.go b/vendor/github.com/davecgh/go-spew/spew/common.go
new file mode 100644
index 0000000..1be8ce9
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/common.go
@@ -0,0 +1,341 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+ "bytes"
+ "fmt"
+ "io"
+ "reflect"
+ "sort"
+ "strconv"
+)
+
+// Some constants in the form of bytes to avoid string overhead. This mirrors
+// the technique used in the fmt package.
+var (
+ panicBytes = []byte("(PANIC=")
+ plusBytes = []byte("+")
+ iBytes = []byte("i")
+ trueBytes = []byte("true")
+ falseBytes = []byte("false")
+ interfaceBytes = []byte("(interface {})")
+ commaNewlineBytes = []byte(",\n")
+ newlineBytes = []byte("\n")
+ openBraceBytes = []byte("{")
+ openBraceNewlineBytes = []byte("{\n")
+ closeBraceBytes = []byte("}")
+ asteriskBytes = []byte("*")
+ colonBytes = []byte(":")
+ colonSpaceBytes = []byte(": ")
+ openParenBytes = []byte("(")
+ closeParenBytes = []byte(")")
+ spaceBytes = []byte(" ")
+ pointerChainBytes = []byte("->")
+ nilAngleBytes = []byte("<nil>")
+ maxNewlineBytes = []byte("<max depth reached>\n")
+ maxShortBytes = []byte("<max>")
+ circularBytes = []byte("<already shown>")
+ circularShortBytes = []byte("<shown>")
+ invalidAngleBytes = []byte("<invalid>")
+ openBracketBytes = []byte("[")
+ closeBracketBytes = []byte("]")
+ percentBytes = []byte("%")
+ precisionBytes = []byte(".")
+ openAngleBytes = []byte("<")
+ closeAngleBytes = []byte(">")
+ openMapBytes = []byte("map[")
+ closeMapBytes = []byte("]")
+ lenEqualsBytes = []byte("len=")
+ capEqualsBytes = []byte("cap=")
+)
+
+// hexDigits is used to map a decimal value to a hex digit.
+var hexDigits = "0123456789abcdef"
+
+// catchPanic handles any panics that might occur during the handleMethods
+// calls.
+func catchPanic(w io.Writer, v reflect.Value) {
+ if err := recover(); err != nil {
+ w.Write(panicBytes)
+ fmt.Fprintf(w, "%v", err)
+ w.Write(closeParenBytes)
+ }
+}
+
+// handleMethods attempts to call the Error and String methods on the underlying
+// type the passed reflect.Value represents and outputes the result to Writer w.
+//
+// It handles panics in any called methods by catching and displaying the error
+// as the formatted value.
+func handleMethods(cs *ConfigState, w io.Writer, v reflect.Value) (handled bool) {
+ // We need an interface to check if the type implements the error or
+ // Stringer interface. However, the reflect package won't give us an
+ // interface on certain things like unexported struct fields in order
+ // to enforce visibility rules. We use unsafe, when it's available,
+ // to bypass these restrictions since this package does not mutate the
+ // values.
+ if !v.CanInterface() {
+ if UnsafeDisabled {
+ return false
+ }
+
+ v = unsafeReflectValue(v)
+ }
+
+ // Choose whether or not to do error and Stringer interface lookups against
+ // the base type or a pointer to the base type depending on settings.
+ // Technically calling one of these methods with a pointer receiver can
+ // mutate the value, however, types which choose to satisify an error or
+ // Stringer interface with a pointer receiver should not be mutating their
+ // state inside these interface methods.
+ if !cs.DisablePointerMethods && !UnsafeDisabled && !v.CanAddr() {
+ v = unsafeReflectValue(v)
+ }
+ if v.CanAddr() {
+ v = v.Addr()
+ }
+
+ // Is it an error or Stringer?
+ switch iface := v.Interface().(type) {
+ case error:
+ defer catchPanic(w, v)
+ if cs.ContinueOnMethod {
+ w.Write(openParenBytes)
+ w.Write([]byte(iface.Error()))
+ w.Write(closeParenBytes)
+ w.Write(spaceBytes)
+ return false
+ }
+
+ w.Write([]byte(iface.Error()))
+ return true
+
+ case fmt.Stringer:
+ defer catchPanic(w, v)
+ if cs.ContinueOnMethod {
+ w.Write(openParenBytes)
+ w.Write([]byte(iface.String()))
+ w.Write(closeParenBytes)
+ w.Write(spaceBytes)
+ return false
+ }
+ w.Write([]byte(iface.String()))
+ return true
+ }
+ return false
+}
+
+// printBool outputs a boolean value as true or false to Writer w.
+func printBool(w io.Writer, val bool) {
+ if val {
+ w.Write(trueBytes)
+ } else {
+ w.Write(falseBytes)
+ }
+}
+
+// printInt outputs a signed integer value to Writer w.
+func printInt(w io.Writer, val int64, base int) {
+ w.Write([]byte(strconv.FormatInt(val, base)))
+}
+
+// printUint outputs an unsigned integer value to Writer w.
+func printUint(w io.Writer, val uint64, base int) {
+ w.Write([]byte(strconv.FormatUint(val, base)))
+}
+
+// printFloat outputs a floating point value using the specified precision,
+// which is expected to be 32 or 64bit, to Writer w.
+func printFloat(w io.Writer, val float64, precision int) {
+ w.Write([]byte(strconv.FormatFloat(val, 'g', -1, precision)))
+}
+
+// printComplex outputs a complex value using the specified float precision
+// for the real and imaginary parts to Writer w.
+func printComplex(w io.Writer, c complex128, floatPrecision int) {
+ r := real(c)
+ w.Write(openParenBytes)
+ w.Write([]byte(strconv.FormatFloat(r, 'g', -1, floatPrecision)))
+ i := imag(c)
+ if i >= 0 {
+ w.Write(plusBytes)
+ }
+ w.Write([]byte(strconv.FormatFloat(i, 'g', -1, floatPrecision)))
+ w.Write(iBytes)
+ w.Write(closeParenBytes)
+}
+
+// printHexPtr outputs a uintptr formatted as hexadecimal with a leading '0x'
+// prefix to Writer w.
+func printHexPtr(w io.Writer, p uintptr) {
+ // Null pointer.
+ num := uint64(p)
+ if num == 0 {
+ w.Write(nilAngleBytes)
+ return
+ }
+
+ // Max uint64 is 16 bytes in hex + 2 bytes for '0x' prefix
+ buf := make([]byte, 18)
+
+ // It's simpler to construct the hex string right to left.
+ base := uint64(16)
+ i := len(buf) - 1
+ for num >= base {
+ buf[i] = hexDigits[num%base]
+ num /= base
+ i--
+ }
+ buf[i] = hexDigits[num]
+
+ // Add '0x' prefix.
+ i--
+ buf[i] = 'x'
+ i--
+ buf[i] = '0'
+
+ // Strip unused leading bytes.
+ buf = buf[i:]
+ w.Write(buf)
+}
+
+// valuesSorter implements sort.Interface to allow a slice of reflect.Value
+// elements to be sorted.
+type valuesSorter struct {
+ values []reflect.Value
+ strings []string // either nil or same len and values
+ cs *ConfigState
+}
+
+// newValuesSorter initializes a valuesSorter instance, which holds a set of
+// surrogate keys on which the data should be sorted. It uses flags in
+// ConfigState to decide if and how to populate those surrogate keys.
+func newValuesSorter(values []reflect.Value, cs *ConfigState) sort.Interface {
+ vs := &valuesSorter{values: values, cs: cs}
+ if canSortSimply(vs.values[0].Kind()) {
+ return vs
+ }
+ if !cs.DisableMethods {
+ vs.strings = make([]string, len(values))
+ for i := range vs.values {
+ b := bytes.Buffer{}
+ if !handleMethods(cs, &b, vs.values[i]) {
+ vs.strings = nil
+ break
+ }
+ vs.strings[i] = b.String()
+ }
+ }
+ if vs.strings == nil && cs.SpewKeys {
+ vs.strings = make([]string, len(values))
+ for i := range vs.values {
+ vs.strings[i] = Sprintf("%#v", vs.values[i].Interface())
+ }
+ }
+ return vs
+}
+
+// canSortSimply tests whether a reflect.Kind is a primitive that can be sorted
+// directly, or whether it should be considered for sorting by surrogate keys
+// (if the ConfigState allows it).
+func canSortSimply(kind reflect.Kind) bool {
+ // This switch parallels valueSortLess, except for the default case.
+ switch kind {
+ case reflect.Bool:
+ return true
+ case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+ return true
+ case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+ return true
+ case reflect.Float32, reflect.Float64:
+ return true
+ case reflect.String:
+ return true
+ case reflect.Uintptr:
+ return true
+ case reflect.Array:
+ return true
+ }
+ return false
+}
+
+// Len returns the number of values in the slice. It is part of the
+// sort.Interface implementation.
+func (s *valuesSorter) Len() int {
+ return len(s.values)
+}
+
+// Swap swaps the values at the passed indices. It is part of the
+// sort.Interface implementation.
+func (s *valuesSorter) Swap(i, j int) {
+ s.values[i], s.values[j] = s.values[j], s.values[i]
+ if s.strings != nil {
+ s.strings[i], s.strings[j] = s.strings[j], s.strings[i]
+ }
+}
+
+// valueSortLess returns whether the first value should sort before the second
+// value. It is used by valueSorter.Less as part of the sort.Interface
+// implementation.
+func valueSortLess(a, b reflect.Value) bool {
+ switch a.Kind() {
+ case reflect.Bool:
+ return !a.Bool() && b.Bool()
+ case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+ return a.Int() < b.Int()
+ case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+ return a.Uint() < b.Uint()
+ case reflect.Float32, reflect.Float64:
+ return a.Float() < b.Float()
+ case reflect.String:
+ return a.String() < b.String()
+ case reflect.Uintptr:
+ return a.Uint() < b.Uint()
+ case reflect.Array:
+ // Compare the contents of both arrays.
+ l := a.Len()
+ for i := 0; i < l; i++ {
+ av := a.Index(i)
+ bv := b.Index(i)
+ if av.Interface() == bv.Interface() {
+ continue
+ }
+ return valueSortLess(av, bv)
+ }
+ }
+ return a.String() < b.String()
+}
+
+// Less returns whether the value at index i should sort before the
+// value at index j. It is part of the sort.Interface implementation.
+func (s *valuesSorter) Less(i, j int) bool {
+ if s.strings == nil {
+ return valueSortLess(s.values[i], s.values[j])
+ }
+ return s.strings[i] < s.strings[j]
+}
+
+// sortValues is a sort function that handles both native types and any type that
+// can be converted to error or Stringer. Other inputs are sorted according to
+// their Value.String() value to ensure display stability.
+func sortValues(values []reflect.Value, cs *ConfigState) {
+ if len(values) == 0 {
+ return
+ }
+ sort.Sort(newValuesSorter(values, cs))
+}
diff --git a/vendor/github.com/davecgh/go-spew/spew/config.go b/vendor/github.com/davecgh/go-spew/spew/config.go
new file mode 100644
index 0000000..2e3d22f
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/config.go
@@ -0,0 +1,306 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+ "bytes"
+ "fmt"
+ "io"
+ "os"
+)
+
+// ConfigState houses the configuration options used by spew to format and
+// display values. There is a global instance, Config, that is used to control
+// all top-level Formatter and Dump functionality. Each ConfigState instance
+// provides methods equivalent to the top-level functions.
+//
+// The zero value for ConfigState provides no indentation. You would typically
+// want to set it to a space or a tab.
+//
+// Alternatively, you can use NewDefaultConfig to get a ConfigState instance
+// with default settings. See the documentation of NewDefaultConfig for default
+// values.
+type ConfigState struct {
+ // Indent specifies the string to use for each indentation level. The
+ // global config instance that all top-level functions use set this to a
+ // single space by default. If you would like more indentation, you might
+ // set this to a tab with "\t" or perhaps two spaces with " ".
+ Indent string
+
+ // MaxDepth controls the maximum number of levels to descend into nested
+ // data structures. The default, 0, means there is no limit.
+ //
+ // NOTE: Circular data structures are properly detected, so it is not
+ // necessary to set this value unless you specifically want to limit deeply
+ // nested data structures.
+ MaxDepth int
+
+ // DisableMethods specifies whether or not error and Stringer interfaces are
+ // invoked for types that implement them.
+ DisableMethods bool
+
+ // DisablePointerMethods specifies whether or not to check for and invoke
+ // error and Stringer interfaces on types which only accept a pointer
+ // receiver when the current type is not a pointer.
+ //
+ // NOTE: This might be an unsafe action since calling one of these methods
+ // with a pointer receiver could technically mutate the value, however,
+ // in practice, types which choose to satisify an error or Stringer
+ // interface with a pointer receiver should not be mutating their state
+ // inside these interface methods. As a result, this option relies on
+ // access to the unsafe package, so it will not have any effect when
+ // running in environments without access to the unsafe package such as
+ // Google App Engine or with the "safe" build tag specified.
+ DisablePointerMethods bool
+
+ // DisablePointerAddresses specifies whether to disable the printing of
+ // pointer addresses. This is useful when diffing data structures in tests.
+ DisablePointerAddresses bool
+
+ // DisableCapacities specifies whether to disable the printing of capacities
+ // for arrays, slices, maps and channels. This is useful when diffing
+ // data structures in tests.
+ DisableCapacities bool
+
+ // ContinueOnMethod specifies whether or not recursion should continue once
+ // a custom error or Stringer interface is invoked. The default, false,
+ // means it will print the results of invoking the custom error or Stringer
+ // interface and return immediately instead of continuing to recurse into
+ // the internals of the data type.
+ //
+ // NOTE: This flag does not have any effect if method invocation is disabled
+ // via the DisableMethods or DisablePointerMethods options.
+ ContinueOnMethod bool
+
+ // SortKeys specifies map keys should be sorted before being printed. Use
+ // this to have a more deterministic, diffable output. Note that only
+ // native types (bool, int, uint, floats, uintptr and string) and types
+ // that support the error or Stringer interfaces (if methods are
+ // enabled) are supported, with other types sorted according to the
+ // reflect.Value.String() output which guarantees display stability.
+ SortKeys bool
+
+ // SpewKeys specifies that, as a last resort attempt, map keys should
+ // be spewed to strings and sorted by those strings. This is only
+ // considered if SortKeys is true.
+ SpewKeys bool
+}
+
+// Config is the active configuration of the top-level functions.
+// The configuration can be changed by modifying the contents of spew.Config.
+var Config = ConfigState{Indent: " "}
+
+// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter. It returns
+// the formatted string as a value that satisfies error. See NewFormatter
+// for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Errorf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Errorf(format string, a ...interface{}) (err error) {
+ return fmt.Errorf(format, c.convertArgs(a)...)
+}
+
+// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter. It returns
+// the number of bytes written and any write error encountered. See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Fprint(w, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprint(w io.Writer, a ...interface{}) (n int, err error) {
+ return fmt.Fprint(w, c.convertArgs(a)...)
+}
+
+// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter. It returns
+// the number of bytes written and any write error encountered. See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Fprintf(w, format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
+ return fmt.Fprintf(w, format, c.convertArgs(a)...)
+}
+
+// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
+// passed with a Formatter interface returned by c.NewFormatter. See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Fprintln(w, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
+ return fmt.Fprintln(w, c.convertArgs(a)...)
+}
+
+// Print is a wrapper for fmt.Print that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter. It returns
+// the number of bytes written and any write error encountered. See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Print(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Print(a ...interface{}) (n int, err error) {
+ return fmt.Print(c.convertArgs(a)...)
+}
+
+// Printf is a wrapper for fmt.Printf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter. It returns
+// the number of bytes written and any write error encountered. See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Printf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Printf(format string, a ...interface{}) (n int, err error) {
+ return fmt.Printf(format, c.convertArgs(a)...)
+}
+
+// Println is a wrapper for fmt.Println that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter. It returns
+// the number of bytes written and any write error encountered. See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Println(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Println(a ...interface{}) (n int, err error) {
+ return fmt.Println(c.convertArgs(a)...)
+}
+
+// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter. It returns
+// the resulting string. See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Sprint(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprint(a ...interface{}) string {
+ return fmt.Sprint(c.convertArgs(a)...)
+}
+
+// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter. It returns
+// the resulting string. See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Sprintf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprintf(format string, a ...interface{}) string {
+ return fmt.Sprintf(format, c.convertArgs(a)...)
+}
+
+// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
+// were passed with a Formatter interface returned by c.NewFormatter. It
+// returns the resulting string. See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Sprintln(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprintln(a ...interface{}) string {
+ return fmt.Sprintln(c.convertArgs(a)...)
+}
+
+/*
+NewFormatter returns a custom formatter that satisfies the fmt.Formatter
+interface. As a result, it integrates cleanly with standard fmt package
+printing functions. The formatter is useful for inline printing of smaller data
+types similar to the standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), and %#+v (adds types and pointer addresses) verb
+combinations. Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting. In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Typically this function shouldn't be called directly. It is much easier to make
+use of the custom formatter by calling one of the convenience functions such as
+c.Printf, c.Println, or c.Printf.
+*/
+func (c *ConfigState) NewFormatter(v interface{}) fmt.Formatter {
+ return newFormatter(c, v)
+}
+
+// Fdump formats and displays the passed arguments to io.Writer w. It formats
+// exactly the same as Dump.
+func (c *ConfigState) Fdump(w io.Writer, a ...interface{}) {
+ fdump(c, w, a...)
+}
+
+/*
+Dump displays the passed parameters to standard out with newlines, customizable
+indentation, and additional debug information such as complete types and all
+pointer addresses used to indirect to the final value. It provides the
+following features over the built-in printing facilities provided by the fmt
+package:
+
+ * Pointers are dereferenced and followed
+ * Circular data structures are detected and handled properly
+ * Custom Stringer/error interfaces are optionally invoked, including
+ on unexported types
+ * Custom types which only implement the Stringer/error interfaces via
+ a pointer receiver are optionally invoked when passing non-pointer
+ variables
+ * Byte arrays and slices are dumped like the hexdump -C command which
+ includes offsets, byte values in hex, and ASCII output
+
+The configuration options are controlled by modifying the public members
+of c. See ConfigState for options documentation.
+
+See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
+get the formatted result as a string.
+*/
+func (c *ConfigState) Dump(a ...interface{}) {
+ fdump(c, os.Stdout, a...)
+}
+
+// Sdump returns a string with the passed arguments formatted exactly the same
+// as Dump.
+func (c *ConfigState) Sdump(a ...interface{}) string {
+ var buf bytes.Buffer
+ fdump(c, &buf, a...)
+ return buf.String()
+}
+
+// convertArgs accepts a slice of arguments and returns a slice of the same
+// length with each argument converted to a spew Formatter interface using
+// the ConfigState associated with s.
+func (c *ConfigState) convertArgs(args []interface{}) (formatters []interface{}) {
+ formatters = make([]interface{}, len(args))
+ for index, arg := range args {
+ formatters[index] = newFormatter(c, arg)
+ }
+ return formatters
+}
+
+// NewDefaultConfig returns a ConfigState with the following default settings.
+//
+// Indent: " "
+// MaxDepth: 0
+// DisableMethods: false
+// DisablePointerMethods: false
+// ContinueOnMethod: false
+// SortKeys: false
+func NewDefaultConfig() *ConfigState {
+ return &ConfigState{Indent: " "}
+}
diff --git a/vendor/github.com/davecgh/go-spew/spew/doc.go b/vendor/github.com/davecgh/go-spew/spew/doc.go
new file mode 100644
index 0000000..aacaac6
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/doc.go
@@ -0,0 +1,211 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+Package spew implements a deep pretty printer for Go data structures to aid in
+debugging.
+
+A quick overview of the additional features spew provides over the built-in
+printing facilities for Go data types are as follows:
+
+ * Pointers are dereferenced and followed
+ * Circular data structures are detected and handled properly
+ * Custom Stringer/error interfaces are optionally invoked, including
+ on unexported types
+ * Custom types which only implement the Stringer/error interfaces via
+ a pointer receiver are optionally invoked when passing non-pointer
+ variables
+ * Byte arrays and slices are dumped like the hexdump -C command which
+ includes offsets, byte values in hex, and ASCII output (only when using
+ Dump style)
+
+There are two different approaches spew allows for dumping Go data structures:
+
+ * Dump style which prints with newlines, customizable indentation,
+ and additional debug information such as types and all pointer addresses
+ used to indirect to the final value
+ * A custom Formatter interface that integrates cleanly with the standard fmt
+ package and replaces %v, %+v, %#v, and %#+v to provide inline printing
+ similar to the default %v while providing the additional functionality
+ outlined above and passing unsupported format verbs such as %x and %q
+ along to fmt
+
+Quick Start
+
+This section demonstrates how to quickly get started with spew. See the
+sections below for further details on formatting and configuration options.
+
+To dump a variable with full newlines, indentation, type, and pointer
+information use Dump, Fdump, or Sdump:
+ spew.Dump(myVar1, myVar2, ...)
+ spew.Fdump(someWriter, myVar1, myVar2, ...)
+ str := spew.Sdump(myVar1, myVar2, ...)
+
+Alternatively, if you would prefer to use format strings with a compacted inline
+printing style, use the convenience wrappers Printf, Fprintf, etc with
+%v (most compact), %+v (adds pointer addresses), %#v (adds types), or
+%#+v (adds types and pointer addresses):
+ spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+ spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+ spew.Fprintf(someWriter, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+ spew.Fprintf(someWriter, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+
+Configuration Options
+
+Configuration of spew is handled by fields in the ConfigState type. For
+convenience, all of the top-level functions use a global state available
+via the spew.Config global.
+
+It is also possible to create a ConfigState instance that provides methods
+equivalent to the top-level functions. This allows concurrent configuration
+options. See the ConfigState documentation for more details.
+
+The following configuration options are available:
+ * Indent
+ String to use for each indentation level for Dump functions.
+ It is a single space by default. A popular alternative is "\t".
+
+ * MaxDepth
+ Maximum number of levels to descend into nested data structures.
+ There is no limit by default.
+
+ * DisableMethods
+ Disables invocation of error and Stringer interface methods.
+ Method invocation is enabled by default.
+
+ * DisablePointerMethods
+ Disables invocation of error and Stringer interface methods on types
+ which only accept pointer receivers from non-pointer variables.
+ Pointer method invocation is enabled by default.
+
+ * DisablePointerAddresses
+ DisablePointerAddresses specifies whether to disable the printing of
+ pointer addresses. This is useful when diffing data structures in tests.
+
+ * DisableCapacities
+ DisableCapacities specifies whether to disable the printing of
+ capacities for arrays, slices, maps and channels. This is useful when
+ diffing data structures in tests.
+
+ * ContinueOnMethod
+ Enables recursion into types after invoking error and Stringer interface
+ methods. Recursion after method invocation is disabled by default.
+
+ * SortKeys
+ Specifies map keys should be sorted before being printed. Use
+ this to have a more deterministic, diffable output. Note that
+ only native types (bool, int, uint, floats, uintptr and string)
+ and types which implement error or Stringer interfaces are
+ supported with other types sorted according to the
+ reflect.Value.String() output which guarantees display
+ stability. Natural map order is used by default.
+
+ * SpewKeys
+ Specifies that, as a last resort attempt, map keys should be
+ spewed to strings and sorted by those strings. This is only
+ considered if SortKeys is true.
+
+Dump Usage
+
+Simply call spew.Dump with a list of variables you want to dump:
+
+ spew.Dump(myVar1, myVar2, ...)
+
+You may also call spew.Fdump if you would prefer to output to an arbitrary
+io.Writer. For example, to dump to standard error:
+
+ spew.Fdump(os.Stderr, myVar1, myVar2, ...)
+
+A third option is to call spew.Sdump to get the formatted output as a string:
+
+ str := spew.Sdump(myVar1, myVar2, ...)
+
+Sample Dump Output
+
+See the Dump example for details on the setup of the types and variables being
+shown here.
+
+ (main.Foo) {
+ unexportedField: (*main.Bar)(0xf84002e210)({
+ flag: (main.Flag) flagTwo,
+ data: (uintptr) <nil>
+ }),
+ ExportedField: (map[interface {}]interface {}) (len=1) {
+ (string) (len=3) "one": (bool) true
+ }
+ }
+
+Byte (and uint8) arrays and slices are displayed uniquely like the hexdump -C
+command as shown.
+ ([]uint8) (len=32 cap=32) {
+ 00000000 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 |............... |
+ 00000010 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 |!"#$%&'()*+,-./0|
+ 00000020 31 32 |12|
+ }
+
+Custom Formatter
+
+Spew provides a custom formatter that implements the fmt.Formatter interface
+so that it integrates cleanly with standard fmt package printing functions. The
+formatter is useful for inline printing of smaller data types similar to the
+standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
+combinations. Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting. In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Custom Formatter Usage
+
+The simplest way to make use of the spew custom formatter is to call one of the
+convenience functions such as spew.Printf, spew.Println, or spew.Printf. The
+functions have syntax you are most likely already familiar with:
+
+ spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+ spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+ spew.Println(myVar, myVar2)
+ spew.Fprintf(os.Stderr, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+ spew.Fprintf(os.Stderr, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+
+See the Index for the full list convenience functions.
+
+Sample Formatter Output
+
+Double pointer to a uint8:
+ %v: <**>5
+ %+v: <**>(0xf8400420d0->0xf8400420c8)5
+ %#v: (**uint8)5
+ %#+v: (**uint8)(0xf8400420d0->0xf8400420c8)5
+
+Pointer to circular struct with a uint8 field and a pointer to itself:
+ %v: <*>{1 <*><shown>}
+ %+v: <*>(0xf84003e260){ui8:1 c:<*>(0xf84003e260)<shown>}
+ %#v: (*main.circular){ui8:(uint8)1 c:(*main.circular)<shown>}
+ %#+v: (*main.circular)(0xf84003e260){ui8:(uint8)1 c:(*main.circular)(0xf84003e260)<shown>}
+
+See the Printf example for details on the setup of variables being shown
+here.
+
+Errors
+
+Since it is possible for custom Stringer/error interfaces to panic, spew
+detects them and handles them internally by printing the panic information
+inline with the output. Since spew is intended to provide deep pretty printing
+capabilities on structures, it intentionally does not return any errors.
+*/
+package spew
diff --git a/vendor/github.com/davecgh/go-spew/spew/dump.go b/vendor/github.com/davecgh/go-spew/spew/dump.go
new file mode 100644
index 0000000..f78d89f
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/dump.go
@@ -0,0 +1,509 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+ "bytes"
+ "encoding/hex"
+ "fmt"
+ "io"
+ "os"
+ "reflect"
+ "regexp"
+ "strconv"
+ "strings"
+)
+
+var (
+ // uint8Type is a reflect.Type representing a uint8. It is used to
+ // convert cgo types to uint8 slices for hexdumping.
+ uint8Type = reflect.TypeOf(uint8(0))
+
+ // cCharRE is a regular expression that matches a cgo char.
+ // It is used to detect character arrays to hexdump them.
+ cCharRE = regexp.MustCompile(`^.*\._Ctype_char$`)
+
+ // cUnsignedCharRE is a regular expression that matches a cgo unsigned
+ // char. It is used to detect unsigned character arrays to hexdump
+ // them.
+ cUnsignedCharRE = regexp.MustCompile(`^.*\._Ctype_unsignedchar$`)
+
+ // cUint8tCharRE is a regular expression that matches a cgo uint8_t.
+ // It is used to detect uint8_t arrays to hexdump them.
+ cUint8tCharRE = regexp.MustCompile(`^.*\._Ctype_uint8_t$`)
+)
+
+// dumpState contains information about the state of a dump operation.
+type dumpState struct {
+ w io.Writer
+ depth int
+ pointers map[uintptr]int
+ ignoreNextType bool
+ ignoreNextIndent bool
+ cs *ConfigState
+}
+
+// indent performs indentation according to the depth level and cs.Indent
+// option.
+func (d *dumpState) indent() {
+ if d.ignoreNextIndent {
+ d.ignoreNextIndent = false
+ return
+ }
+ d.w.Write(bytes.Repeat([]byte(d.cs.Indent), d.depth))
+}
+
+// unpackValue returns values inside of non-nil interfaces when possible.
+// This is useful for data types like structs, arrays, slices, and maps which
+// can contain varying types packed inside an interface.
+func (d *dumpState) unpackValue(v reflect.Value) reflect.Value {
+ if v.Kind() == reflect.Interface && !v.IsNil() {
+ v = v.Elem()
+ }
+ return v
+}
+
+// dumpPtr handles formatting of pointers by indirecting them as necessary.
+func (d *dumpState) dumpPtr(v reflect.Value) {
+ // Remove pointers at or below the current depth from map used to detect
+ // circular refs.
+ for k, depth := range d.pointers {
+ if depth >= d.depth {
+ delete(d.pointers, k)
+ }
+ }
+
+ // Keep list of all dereferenced pointers to show later.
+ pointerChain := make([]uintptr, 0)
+
+ // Figure out how many levels of indirection there are by dereferencing
+ // pointers and unpacking interfaces down the chain while detecting circular
+ // references.
+ nilFound := false
+ cycleFound := false
+ indirects := 0
+ ve := v
+ for ve.Kind() == reflect.Ptr {
+ if ve.IsNil() {
+ nilFound = true
+ break
+ }
+ indirects++
+ addr := ve.Pointer()
+ pointerChain = append(pointerChain, addr)
+ if pd, ok := d.pointers[addr]; ok && pd < d.depth {
+ cycleFound = true
+ indirects--
+ break
+ }
+ d.pointers[addr] = d.depth
+
+ ve = ve.Elem()
+ if ve.Kind() == reflect.Interface {
+ if ve.IsNil() {
+ nilFound = true
+ break
+ }
+ ve = ve.Elem()
+ }
+ }
+
+ // Display type information.
+ d.w.Write(openParenBytes)
+ d.w.Write(bytes.Repeat(asteriskBytes, indirects))
+ d.w.Write([]byte(ve.Type().String()))
+ d.w.Write(closeParenBytes)
+
+ // Display pointer information.
+ if !d.cs.DisablePointerAddresses && len(pointerChain) > 0 {
+ d.w.Write(openParenBytes)
+ for i, addr := range pointerChain {
+ if i > 0 {
+ d.w.Write(pointerChainBytes)
+ }
+ printHexPtr(d.w, addr)
+ }
+ d.w.Write(closeParenBytes)
+ }
+
+ // Display dereferenced value.
+ d.w.Write(openParenBytes)
+ switch {
+ case nilFound:
+ d.w.Write(nilAngleBytes)
+
+ case cycleFound:
+ d.w.Write(circularBytes)
+
+ default:
+ d.ignoreNextType = true
+ d.dump(ve)
+ }
+ d.w.Write(closeParenBytes)
+}
+
+// dumpSlice handles formatting of arrays and slices. Byte (uint8 under
+// reflection) arrays and slices are dumped in hexdump -C fashion.
+func (d *dumpState) dumpSlice(v reflect.Value) {
+ // Determine whether this type should be hex dumped or not. Also,
+ // for types which should be hexdumped, try to use the underlying data
+ // first, then fall back to trying to convert them to a uint8 slice.
+ var buf []uint8
+ doConvert := false
+ doHexDump := false
+ numEntries := v.Len()
+ if numEntries > 0 {
+ vt := v.Index(0).Type()
+ vts := vt.String()
+ switch {
+ // C types that need to be converted.
+ case cCharRE.MatchString(vts):
+ fallthrough
+ case cUnsignedCharRE.MatchString(vts):
+ fallthrough
+ case cUint8tCharRE.MatchString(vts):
+ doConvert = true
+
+ // Try to use existing uint8 slices and fall back to converting
+ // and copying if that fails.
+ case vt.Kind() == reflect.Uint8:
+ // We need an addressable interface to convert the type
+ // to a byte slice. However, the reflect package won't
+ // give us an interface on certain things like
+ // unexported struct fields in order to enforce
+ // visibility rules. We use unsafe, when available, to
+ // bypass these restrictions since this package does not
+ // mutate the values.
+ vs := v
+ if !vs.CanInterface() || !vs.CanAddr() {
+ vs = unsafeReflectValue(vs)
+ }
+ if !UnsafeDisabled {
+ vs = vs.Slice(0, numEntries)
+
+ // Use the existing uint8 slice if it can be
+ // type asserted.
+ iface := vs.Interface()
+ if slice, ok := iface.([]uint8); ok {
+ buf = slice
+ doHexDump = true
+ break
+ }
+ }
+
+ // The underlying data needs to be converted if it can't
+ // be type asserted to a uint8 slice.
+ doConvert = true
+ }
+
+ // Copy and convert the underlying type if needed.
+ if doConvert && vt.ConvertibleTo(uint8Type) {
+ // Convert and copy each element into a uint8 byte
+ // slice.
+ buf = make([]uint8, numEntries)
+ for i := 0; i < numEntries; i++ {
+ vv := v.Index(i)
+ buf[i] = uint8(vv.Convert(uint8Type).Uint())
+ }
+ doHexDump = true
+ }
+ }
+
+ // Hexdump the entire slice as needed.
+ if doHexDump {
+ indent := strings.Repeat(d.cs.Indent, d.depth)
+ str := indent + hex.Dump(buf)
+ str = strings.Replace(str, "\n", "\n"+indent, -1)
+ str = strings.TrimRight(str, d.cs.Indent)
+ d.w.Write([]byte(str))
+ return
+ }
+
+ // Recursively call dump for each item.
+ for i := 0; i < numEntries; i++ {
+ d.dump(d.unpackValue(v.Index(i)))
+ if i < (numEntries - 1) {
+ d.w.Write(commaNewlineBytes)
+ } else {
+ d.w.Write(newlineBytes)
+ }
+ }
+}
+
+// dump is the main workhorse for dumping a value. It uses the passed reflect
+// value to figure out what kind of object we are dealing with and formats it
+// appropriately. It is a recursive function, however circular data structures
+// are detected and handled properly.
+func (d *dumpState) dump(v reflect.Value) {
+ // Handle invalid reflect values immediately.
+ kind := v.Kind()
+ if kind == reflect.Invalid {
+ d.w.Write(invalidAngleBytes)
+ return
+ }
+
+ // Handle pointers specially.
+ if kind == reflect.Ptr {
+ d.indent()
+ d.dumpPtr(v)
+ return
+ }
+
+ // Print type information unless already handled elsewhere.
+ if !d.ignoreNextType {
+ d.indent()
+ d.w.Write(openParenBytes)
+ d.w.Write([]byte(v.Type().String()))
+ d.w.Write(closeParenBytes)
+ d.w.Write(spaceBytes)
+ }
+ d.ignoreNextType = false
+
+ // Display length and capacity if the built-in len and cap functions
+ // work with the value's kind and the len/cap itself is non-zero.
+ valueLen, valueCap := 0, 0
+ switch v.Kind() {
+ case reflect.Array, reflect.Slice, reflect.Chan:
+ valueLen, valueCap = v.Len(), v.Cap()
+ case reflect.Map, reflect.String:
+ valueLen = v.Len()
+ }
+ if valueLen != 0 || !d.cs.DisableCapacities && valueCap != 0 {
+ d.w.Write(openParenBytes)
+ if valueLen != 0 {
+ d.w.Write(lenEqualsBytes)
+ printInt(d.w, int64(valueLen), 10)
+ }
+ if !d.cs.DisableCapacities && valueCap != 0 {
+ if valueLen != 0 {
+ d.w.Write(spaceBytes)
+ }
+ d.w.Write(capEqualsBytes)
+ printInt(d.w, int64(valueCap), 10)
+ }
+ d.w.Write(closeParenBytes)
+ d.w.Write(spaceBytes)
+ }
+
+ // Call Stringer/error interfaces if they exist and the handle methods flag
+ // is enabled
+ if !d.cs.DisableMethods {
+ if (kind != reflect.Invalid) && (kind != reflect.Interface) {
+ if handled := handleMethods(d.cs, d.w, v); handled {
+ return
+ }
+ }
+ }
+
+ switch kind {
+ case reflect.Invalid:
+ // Do nothing. We should never get here since invalid has already
+ // been handled above.
+
+ case reflect.Bool:
+ printBool(d.w, v.Bool())
+
+ case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+ printInt(d.w, v.Int(), 10)
+
+ case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+ printUint(d.w, v.Uint(), 10)
+
+ case reflect.Float32:
+ printFloat(d.w, v.Float(), 32)
+
+ case reflect.Float64:
+ printFloat(d.w, v.Float(), 64)
+
+ case reflect.Complex64:
+ printComplex(d.w, v.Complex(), 32)
+
+ case reflect.Complex128:
+ printComplex(d.w, v.Complex(), 64)
+
+ case reflect.Slice:
+ if v.IsNil() {
+ d.w.Write(nilAngleBytes)
+ break
+ }
+ fallthrough
+
+ case reflect.Array:
+ d.w.Write(openBraceNewlineBytes)
+ d.depth++
+ if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+ d.indent()
+ d.w.Write(maxNewlineBytes)
+ } else {
+ d.dumpSlice(v)
+ }
+ d.depth--
+ d.indent()
+ d.w.Write(closeBraceBytes)
+
+ case reflect.String:
+ d.w.Write([]byte(strconv.Quote(v.String())))
+
+ case reflect.Interface:
+ // The only time we should get here is for nil interfaces due to
+ // unpackValue calls.
+ if v.IsNil() {
+ d.w.Write(nilAngleBytes)
+ }
+
+ case reflect.Ptr:
+ // Do nothing. We should never get here since pointers have already
+ // been handled above.
+
+ case reflect.Map:
+ // nil maps should be indicated as different than empty maps
+ if v.IsNil() {
+ d.w.Write(nilAngleBytes)
+ break
+ }
+
+ d.w.Write(openBraceNewlineBytes)
+ d.depth++
+ if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+ d.indent()
+ d.w.Write(maxNewlineBytes)
+ } else {
+ numEntries := v.Len()
+ keys := v.MapKeys()
+ if d.cs.SortKeys {
+ sortValues(keys, d.cs)
+ }
+ for i, key := range keys {
+ d.dump(d.unpackValue(key))
+ d.w.Write(colonSpaceBytes)
+ d.ignoreNextIndent = true
+ d.dump(d.unpackValue(v.MapIndex(key)))
+ if i < (numEntries - 1) {
+ d.w.Write(commaNewlineBytes)
+ } else {
+ d.w.Write(newlineBytes)
+ }
+ }
+ }
+ d.depth--
+ d.indent()
+ d.w.Write(closeBraceBytes)
+
+ case reflect.Struct:
+ d.w.Write(openBraceNewlineBytes)
+ d.depth++
+ if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+ d.indent()
+ d.w.Write(maxNewlineBytes)
+ } else {
+ vt := v.Type()
+ numFields := v.NumField()
+ for i := 0; i < numFields; i++ {
+ d.indent()
+ vtf := vt.Field(i)
+ d.w.Write([]byte(vtf.Name))
+ d.w.Write(colonSpaceBytes)
+ d.ignoreNextIndent = true
+ d.dump(d.unpackValue(v.Field(i)))
+ if i < (numFields - 1) {
+ d.w.Write(commaNewlineBytes)
+ } else {
+ d.w.Write(newlineBytes)
+ }
+ }
+ }
+ d.depth--
+ d.indent()
+ d.w.Write(closeBraceBytes)
+
+ case reflect.Uintptr:
+ printHexPtr(d.w, uintptr(v.Uint()))
+
+ case reflect.UnsafePointer, reflect.Chan, reflect.Func:
+ printHexPtr(d.w, v.Pointer())
+
+ // There were not any other types at the time this code was written, but
+ // fall back to letting the default fmt package handle it in case any new
+ // types are added.
+ default:
+ if v.CanInterface() {
+ fmt.Fprintf(d.w, "%v", v.Interface())
+ } else {
+ fmt.Fprintf(d.w, "%v", v.String())
+ }
+ }
+}
+
+// fdump is a helper function to consolidate the logic from the various public
+// methods which take varying writers and config states.
+func fdump(cs *ConfigState, w io.Writer, a ...interface{}) {
+ for _, arg := range a {
+ if arg == nil {
+ w.Write(interfaceBytes)
+ w.Write(spaceBytes)
+ w.Write(nilAngleBytes)
+ w.Write(newlineBytes)
+ continue
+ }
+
+ d := dumpState{w: w, cs: cs}
+ d.pointers = make(map[uintptr]int)
+ d.dump(reflect.ValueOf(arg))
+ d.w.Write(newlineBytes)
+ }
+}
+
+// Fdump formats and displays the passed arguments to io.Writer w. It formats
+// exactly the same as Dump.
+func Fdump(w io.Writer, a ...interface{}) {
+ fdump(&Config, w, a...)
+}
+
+// Sdump returns a string with the passed arguments formatted exactly the same
+// as Dump.
+func Sdump(a ...interface{}) string {
+ var buf bytes.Buffer
+ fdump(&Config, &buf, a...)
+ return buf.String()
+}
+
+/*
+Dump displays the passed parameters to standard out with newlines, customizable
+indentation, and additional debug information such as complete types and all
+pointer addresses used to indirect to the final value. It provides the
+following features over the built-in printing facilities provided by the fmt
+package:
+
+ * Pointers are dereferenced and followed
+ * Circular data structures are detected and handled properly
+ * Custom Stringer/error interfaces are optionally invoked, including
+ on unexported types
+ * Custom types which only implement the Stringer/error interfaces via
+ a pointer receiver are optionally invoked when passing non-pointer
+ variables
+ * Byte arrays and slices are dumped like the hexdump -C command which
+ includes offsets, byte values in hex, and ASCII output
+
+The configuration options are controlled by an exported package global,
+spew.Config. See ConfigState for options documentation.
+
+See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
+get the formatted result as a string.
+*/
+func Dump(a ...interface{}) {
+ fdump(&Config, os.Stdout, a...)
+}
diff --git a/vendor/github.com/davecgh/go-spew/spew/format.go b/vendor/github.com/davecgh/go-spew/spew/format.go
new file mode 100644
index 0000000..b04edb7
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/format.go
@@ -0,0 +1,419 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+ "bytes"
+ "fmt"
+ "reflect"
+ "strconv"
+ "strings"
+)
+
+// supportedFlags is a list of all the character flags supported by fmt package.
+const supportedFlags = "0-+# "
+
+// formatState implements the fmt.Formatter interface and contains information
+// about the state of a formatting operation. The NewFormatter function can
+// be used to get a new Formatter which can be used directly as arguments
+// in standard fmt package printing calls.
+type formatState struct {
+ value interface{}
+ fs fmt.State
+ depth int
+ pointers map[uintptr]int
+ ignoreNextType bool
+ cs *ConfigState
+}
+
+// buildDefaultFormat recreates the original format string without precision
+// and width information to pass in to fmt.Sprintf in the case of an
+// unrecognized type. Unless new types are added to the language, this
+// function won't ever be called.
+func (f *formatState) buildDefaultFormat() (format string) {
+ buf := bytes.NewBuffer(percentBytes)
+
+ for _, flag := range supportedFlags {
+ if f.fs.Flag(int(flag)) {
+ buf.WriteRune(flag)
+ }
+ }
+
+ buf.WriteRune('v')
+
+ format = buf.String()
+ return format
+}
+
+// constructOrigFormat recreates the original format string including precision
+// and width information to pass along to the standard fmt package. This allows
+// automatic deferral of all format strings this package doesn't support.
+func (f *formatState) constructOrigFormat(verb rune) (format string) {
+ buf := bytes.NewBuffer(percentBytes)
+
+ for _, flag := range supportedFlags {
+ if f.fs.Flag(int(flag)) {
+ buf.WriteRune(flag)
+ }
+ }
+
+ if width, ok := f.fs.Width(); ok {
+ buf.WriteString(strconv.Itoa(width))
+ }
+
+ if precision, ok := f.fs.Precision(); ok {
+ buf.Write(precisionBytes)
+ buf.WriteString(strconv.Itoa(precision))
+ }
+
+ buf.WriteRune(verb)
+
+ format = buf.String()
+ return format
+}
+
+// unpackValue returns values inside of non-nil interfaces when possible and
+// ensures that types for values which have been unpacked from an interface
+// are displayed when the show types flag is also set.
+// This is useful for data types like structs, arrays, slices, and maps which
+// can contain varying types packed inside an interface.
+func (f *formatState) unpackValue(v reflect.Value) reflect.Value {
+ if v.Kind() == reflect.Interface {
+ f.ignoreNextType = false
+ if !v.IsNil() {
+ v = v.Elem()
+ }
+ }
+ return v
+}
+
+// formatPtr handles formatting of pointers by indirecting them as necessary.
+func (f *formatState) formatPtr(v reflect.Value) {
+ // Display nil if top level pointer is nil.
+ showTypes := f.fs.Flag('#')
+ if v.IsNil() && (!showTypes || f.ignoreNextType) {
+ f.fs.Write(nilAngleBytes)
+ return
+ }
+
+ // Remove pointers at or below the current depth from map used to detect
+ // circular refs.
+ for k, depth := range f.pointers {
+ if depth >= f.depth {
+ delete(f.pointers, k)
+ }
+ }
+
+ // Keep list of all dereferenced pointers to possibly show later.
+ pointerChain := make([]uintptr, 0)
+
+ // Figure out how many levels of indirection there are by derferencing
+ // pointers and unpacking interfaces down the chain while detecting circular
+ // references.
+ nilFound := false
+ cycleFound := false
+ indirects := 0
+ ve := v
+ for ve.Kind() == reflect.Ptr {
+ if ve.IsNil() {
+ nilFound = true
+ break
+ }
+ indirects++
+ addr := ve.Pointer()
+ pointerChain = append(pointerChain, addr)
+ if pd, ok := f.pointers[addr]; ok && pd < f.depth {
+ cycleFound = true
+ indirects--
+ break
+ }
+ f.pointers[addr] = f.depth
+
+ ve = ve.Elem()
+ if ve.Kind() == reflect.Interface {
+ if ve.IsNil() {
+ nilFound = true
+ break
+ }
+ ve = ve.Elem()
+ }
+ }
+
+ // Display type or indirection level depending on flags.
+ if showTypes && !f.ignoreNextType {
+ f.fs.Write(openParenBytes)
+ f.fs.Write(bytes.Repeat(asteriskBytes, indirects))
+ f.fs.Write([]byte(ve.Type().String()))
+ f.fs.Write(closeParenBytes)
+ } else {
+ if nilFound || cycleFound {
+ indirects += strings.Count(ve.Type().String(), "*")
+ }
+ f.fs.Write(openAngleBytes)
+ f.fs.Write([]byte(strings.Repeat("*", indirects)))
+ f.fs.Write(closeAngleBytes)
+ }
+
+ // Display pointer information depending on flags.
+ if f.fs.Flag('+') && (len(pointerChain) > 0) {
+ f.fs.Write(openParenBytes)
+ for i, addr := range pointerChain {
+ if i > 0 {
+ f.fs.Write(pointerChainBytes)
+ }
+ printHexPtr(f.fs, addr)
+ }
+ f.fs.Write(closeParenBytes)
+ }
+
+ // Display dereferenced value.
+ switch {
+ case nilFound:
+ f.fs.Write(nilAngleBytes)
+
+ case cycleFound:
+ f.fs.Write(circularShortBytes)
+
+ default:
+ f.ignoreNextType = true
+ f.format(ve)
+ }
+}
+
+// format is the main workhorse for providing the Formatter interface. It
+// uses the passed reflect value to figure out what kind of object we are
+// dealing with and formats it appropriately. It is a recursive function,
+// however circular data structures are detected and handled properly.
+func (f *formatState) format(v reflect.Value) {
+ // Handle invalid reflect values immediately.
+ kind := v.Kind()
+ if kind == reflect.Invalid {
+ f.fs.Write(invalidAngleBytes)
+ return
+ }
+
+ // Handle pointers specially.
+ if kind == reflect.Ptr {
+ f.formatPtr(v)
+ return
+ }
+
+ // Print type information unless already handled elsewhere.
+ if !f.ignoreNextType && f.fs.Flag('#') {
+ f.fs.Write(openParenBytes)
+ f.fs.Write([]byte(v.Type().String()))
+ f.fs.Write(closeParenBytes)
+ }
+ f.ignoreNextType = false
+
+ // Call Stringer/error interfaces if they exist and the handle methods
+ // flag is enabled.
+ if !f.cs.DisableMethods {
+ if (kind != reflect.Invalid) && (kind != reflect.Interface) {
+ if handled := handleMethods(f.cs, f.fs, v); handled {
+ return
+ }
+ }
+ }
+
+ switch kind {
+ case reflect.Invalid:
+ // Do nothing. We should never get here since invalid has already
+ // been handled above.
+
+ case reflect.Bool:
+ printBool(f.fs, v.Bool())
+
+ case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+ printInt(f.fs, v.Int(), 10)
+
+ case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+ printUint(f.fs, v.Uint(), 10)
+
+ case reflect.Float32:
+ printFloat(f.fs, v.Float(), 32)
+
+ case reflect.Float64:
+ printFloat(f.fs, v.Float(), 64)
+
+ case reflect.Complex64:
+ printComplex(f.fs, v.Complex(), 32)
+
+ case reflect.Complex128:
+ printComplex(f.fs, v.Complex(), 64)
+
+ case reflect.Slice:
+ if v.IsNil() {
+ f.fs.Write(nilAngleBytes)
+ break
+ }
+ fallthrough
+
+ case reflect.Array:
+ f.fs.Write(openBracketBytes)
+ f.depth++
+ if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+ f.fs.Write(maxShortBytes)
+ } else {
+ numEntries := v.Len()
+ for i := 0; i < numEntries; i++ {
+ if i > 0 {
+ f.fs.Write(spaceBytes)
+ }
+ f.ignoreNextType = true
+ f.format(f.unpackValue(v.Index(i)))
+ }
+ }
+ f.depth--
+ f.fs.Write(closeBracketBytes)
+
+ case reflect.String:
+ f.fs.Write([]byte(v.String()))
+
+ case reflect.Interface:
+ // The only time we should get here is for nil interfaces due to
+ // unpackValue calls.
+ if v.IsNil() {
+ f.fs.Write(nilAngleBytes)
+ }
+
+ case reflect.Ptr:
+ // Do nothing. We should never get here since pointers have already
+ // been handled above.
+
+ case reflect.Map:
+ // nil maps should be indicated as different than empty maps
+ if v.IsNil() {
+ f.fs.Write(nilAngleBytes)
+ break
+ }
+
+ f.fs.Write(openMapBytes)
+ f.depth++
+ if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+ f.fs.Write(maxShortBytes)
+ } else {
+ keys := v.MapKeys()
+ if f.cs.SortKeys {
+ sortValues(keys, f.cs)
+ }
+ for i, key := range keys {
+ if i > 0 {
+ f.fs.Write(spaceBytes)
+ }
+ f.ignoreNextType = true
+ f.format(f.unpackValue(key))
+ f.fs.Write(colonBytes)
+ f.ignoreNextType = true
+ f.format(f.unpackValue(v.MapIndex(key)))
+ }
+ }
+ f.depth--
+ f.fs.Write(closeMapBytes)
+
+ case reflect.Struct:
+ numFields := v.NumField()
+ f.fs.Write(openBraceBytes)
+ f.depth++
+ if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+ f.fs.Write(maxShortBytes)
+ } else {
+ vt := v.Type()
+ for i := 0; i < numFields; i++ {
+ if i > 0 {
+ f.fs.Write(spaceBytes)
+ }
+ vtf := vt.Field(i)
+ if f.fs.Flag('+') || f.fs.Flag('#') {
+ f.fs.Write([]byte(vtf.Name))
+ f.fs.Write(colonBytes)
+ }
+ f.format(f.unpackValue(v.Field(i)))
+ }
+ }
+ f.depth--
+ f.fs.Write(closeBraceBytes)
+
+ case reflect.Uintptr:
+ printHexPtr(f.fs, uintptr(v.Uint()))
+
+ case reflect.UnsafePointer, reflect.Chan, reflect.Func:
+ printHexPtr(f.fs, v.Pointer())
+
+ // There were not any other types at the time this code was written, but
+ // fall back to letting the default fmt package handle it if any get added.
+ default:
+ format := f.buildDefaultFormat()
+ if v.CanInterface() {
+ fmt.Fprintf(f.fs, format, v.Interface())
+ } else {
+ fmt.Fprintf(f.fs, format, v.String())
+ }
+ }
+}
+
+// Format satisfies the fmt.Formatter interface. See NewFormatter for usage
+// details.
+func (f *formatState) Format(fs fmt.State, verb rune) {
+ f.fs = fs
+
+ // Use standard formatting for verbs that are not v.
+ if verb != 'v' {
+ format := f.constructOrigFormat(verb)
+ fmt.Fprintf(fs, format, f.value)
+ return
+ }
+
+ if f.value == nil {
+ if fs.Flag('#') {
+ fs.Write(interfaceBytes)
+ }
+ fs.Write(nilAngleBytes)
+ return
+ }
+
+ f.format(reflect.ValueOf(f.value))
+}
+
+// newFormatter is a helper function to consolidate the logic from the various
+// public methods which take varying config states.
+func newFormatter(cs *ConfigState, v interface{}) fmt.Formatter {
+ fs := &formatState{value: v, cs: cs}
+ fs.pointers = make(map[uintptr]int)
+ return fs
+}
+
+/*
+NewFormatter returns a custom formatter that satisfies the fmt.Formatter
+interface. As a result, it integrates cleanly with standard fmt package
+printing functions. The formatter is useful for inline printing of smaller data
+types similar to the standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
+combinations. Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting. In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Typically this function shouldn't be called directly. It is much easier to make
+use of the custom formatter by calling one of the convenience functions such as
+Printf, Println, or Fprintf.
+*/
+func NewFormatter(v interface{}) fmt.Formatter {
+ return newFormatter(&Config, v)
+}
diff --git a/vendor/github.com/davecgh/go-spew/spew/spew.go b/vendor/github.com/davecgh/go-spew/spew/spew.go
new file mode 100644
index 0000000..32c0e33
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/spew.go
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+ "fmt"
+ "io"
+)
+
+// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter. It
+// returns the formatted string as a value that satisfies error. See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Errorf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Errorf(format string, a ...interface{}) (err error) {
+ return fmt.Errorf(format, convertArgs(a)...)
+}
+
+// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter. It
+// returns the number of bytes written and any write error encountered. See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Fprint(w, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprint(w io.Writer, a ...interface{}) (n int, err error) {
+ return fmt.Fprint(w, convertArgs(a)...)
+}
+
+// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter. It
+// returns the number of bytes written and any write error encountered. See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Fprintf(w, format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
+ return fmt.Fprintf(w, format, convertArgs(a)...)
+}
+
+// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
+// passed with a default Formatter interface returned by NewFormatter. See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Fprintln(w, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
+ return fmt.Fprintln(w, convertArgs(a)...)
+}
+
+// Print is a wrapper for fmt.Print that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter. It
+// returns the number of bytes written and any write error encountered. See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Print(spew.NewFormatter(a), spew.NewFormatter(b))
+func Print(a ...interface{}) (n int, err error) {
+ return fmt.Print(convertArgs(a)...)
+}
+
+// Printf is a wrapper for fmt.Printf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter. It
+// returns the number of bytes written and any write error encountered. See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Printf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Printf(format string, a ...interface{}) (n int, err error) {
+ return fmt.Printf(format, convertArgs(a)...)
+}
+
+// Println is a wrapper for fmt.Println that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter. It
+// returns the number of bytes written and any write error encountered. See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Println(spew.NewFormatter(a), spew.NewFormatter(b))
+func Println(a ...interface{}) (n int, err error) {
+ return fmt.Println(convertArgs(a)...)
+}
+
+// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter. It
+// returns the resulting string. See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Sprint(spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprint(a ...interface{}) string {
+ return fmt.Sprint(convertArgs(a)...)
+}
+
+// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter. It
+// returns the resulting string. See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Sprintf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprintf(format string, a ...interface{}) string {
+ return fmt.Sprintf(format, convertArgs(a)...)
+}
+
+// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
+// were passed with a default Formatter interface returned by NewFormatter. It
+// returns the resulting string. See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+// fmt.Sprintln(spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprintln(a ...interface{}) string {
+ return fmt.Sprintln(convertArgs(a)...)
+}
+
+// convertArgs accepts a slice of arguments and returns a slice of the same
+// length with each argument converted to a default spew Formatter interface.
+func convertArgs(args []interface{}) (formatters []interface{}) {
+ formatters = make([]interface{}, len(args))
+ for index, arg := range args {
+ formatters[index] = NewFormatter(arg)
+ }
+ return formatters
+}
diff --git a/vendor/github.com/pmezard/go-difflib/LICENSE b/vendor/github.com/pmezard/go-difflib/LICENSE
new file mode 100644
index 0000000..c67dad6
--- /dev/null
+++ b/vendor/github.com/pmezard/go-difflib/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2013, Patrick Mezard
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+ Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+ The names of its contributors may not be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/pmezard/go-difflib/difflib/difflib.go b/vendor/github.com/pmezard/go-difflib/difflib/difflib.go
new file mode 100644
index 0000000..003e99f
--- /dev/null
+++ b/vendor/github.com/pmezard/go-difflib/difflib/difflib.go
@@ -0,0 +1,772 @@
+// Package difflib is a partial port of Python difflib module.
+//
+// It provides tools to compare sequences of strings and generate textual diffs.
+//
+// The following class and functions have been ported:
+//
+// - SequenceMatcher
+//
+// - unified_diff
+//
+// - context_diff
+//
+// Getting unified diffs was the main goal of the port. Keep in mind this code
+// is mostly suitable to output text differences in a human friendly way, there
+// are no guarantees generated diffs are consumable by patch(1).
+package difflib
+
+import (
+ "bufio"
+ "bytes"
+ "fmt"
+ "io"
+ "strings"
+)
+
+func min(a, b int) int {
+ if a < b {
+ return a
+ }
+ return b
+}
+
+func max(a, b int) int {
+ if a > b {
+ return a
+ }
+ return b
+}
+
+func calculateRatio(matches, length int) float64 {
+ if length > 0 {
+ return 2.0 * float64(matches) / float64(length)
+ }
+ return 1.0
+}
+
+type Match struct {
+ A int
+ B int
+ Size int
+}
+
+type OpCode struct {
+ Tag byte
+ I1 int
+ I2 int
+ J1 int
+ J2 int
+}
+
+// SequenceMatcher compares sequence of strings. The basic
+// algorithm predates, and is a little fancier than, an algorithm
+// published in the late 1980's by Ratcliff and Obershelp under the
+// hyperbolic name "gestalt pattern matching". The basic idea is to find
+// the longest contiguous matching subsequence that contains no "junk"
+// elements (R-O doesn't address junk). The same idea is then applied
+// recursively to the pieces of the sequences to the left and to the right
+// of the matching subsequence. This does not yield minimal edit
+// sequences, but does tend to yield matches that "look right" to people.
+//
+// SequenceMatcher tries to compute a "human-friendly diff" between two
+// sequences. Unlike e.g. UNIX(tm) diff, the fundamental notion is the
+// longest *contiguous* & junk-free matching subsequence. That's what
+// catches peoples' eyes. The Windows(tm) windiff has another interesting
+// notion, pairing up elements that appear uniquely in each sequence.
+// That, and the method here, appear to yield more intuitive difference
+// reports than does diff. This method appears to be the least vulnerable
+// to synching up on blocks of "junk lines", though (like blank lines in
+// ordinary text files, or maybe "<P>" lines in HTML files). That may be
+// because this is the only method of the 3 that has a *concept* of
+// "junk" <wink>.
+//
+// Timing: Basic R-O is cubic time worst case and quadratic time expected
+// case. SequenceMatcher is quadratic time for the worst case and has
+// expected-case behavior dependent in a complicated way on how many
+// elements the sequences have in common; best case time is linear.
+type SequenceMatcher struct {
+ a []string
+ b []string
+ b2j map[string][]int
+ IsJunk func(string) bool
+ autoJunk bool
+ bJunk map[string]struct{}
+ matchingBlocks []Match
+ fullBCount map[string]int
+ bPopular map[string]struct{}
+ opCodes []OpCode
+}
+
+func NewMatcher(a, b []string) *SequenceMatcher {
+ m := SequenceMatcher{autoJunk: true}
+ m.SetSeqs(a, b)
+ return &m
+}
+
+func NewMatcherWithJunk(a, b []string, autoJunk bool,
+ isJunk func(string) bool) *SequenceMatcher {
+
+ m := SequenceMatcher{IsJunk: isJunk, autoJunk: autoJunk}
+ m.SetSeqs(a, b)
+ return &m
+}
+
+// Set two sequences to be compared.
+func (m *SequenceMatcher) SetSeqs(a, b []string) {
+ m.SetSeq1(a)
+ m.SetSeq2(b)
+}
+
+// Set the first sequence to be compared. The second sequence to be compared is
+// not changed.
+//
+// SequenceMatcher computes and caches detailed information about the second
+// sequence, so if you want to compare one sequence S against many sequences,
+// use .SetSeq2(s) once and call .SetSeq1(x) repeatedly for each of the other
+// sequences.
+//
+// See also SetSeqs() and SetSeq2().
+func (m *SequenceMatcher) SetSeq1(a []string) {
+ if &a == &m.a {
+ return
+ }
+ m.a = a
+ m.matchingBlocks = nil
+ m.opCodes = nil
+}
+
+// Set the second sequence to be compared. The first sequence to be compared is
+// not changed.
+func (m *SequenceMatcher) SetSeq2(b []string) {
+ if &b == &m.b {
+ return
+ }
+ m.b = b
+ m.matchingBlocks = nil
+ m.opCodes = nil
+ m.fullBCount = nil
+ m.chainB()
+}
+
+func (m *SequenceMatcher) chainB() {
+ // Populate line -> index mapping
+ b2j := map[string][]int{}
+ for i, s := range m.b {
+ indices := b2j[s]
+ indices = append(indices, i)
+ b2j[s] = indices
+ }
+
+ // Purge junk elements
+ m.bJunk = map[string]struct{}{}
+ if m.IsJunk != nil {
+ junk := m.bJunk
+ for s, _ := range b2j {
+ if m.IsJunk(s) {
+ junk[s] = struct{}{}
+ }
+ }
+ for s, _ := range junk {
+ delete(b2j, s)
+ }
+ }
+
+ // Purge remaining popular elements
+ popular := map[string]struct{}{}
+ n := len(m.b)
+ if m.autoJunk && n >= 200 {
+ ntest := n/100 + 1
+ for s, indices := range b2j {
+ if len(indices) > ntest {
+ popular[s] = struct{}{}
+ }
+ }
+ for s, _ := range popular {
+ delete(b2j, s)
+ }
+ }
+ m.bPopular = popular
+ m.b2j = b2j
+}
+
+func (m *SequenceMatcher) isBJunk(s string) bool {
+ _, ok := m.bJunk[s]
+ return ok
+}
+
+// Find longest matching block in a[alo:ahi] and b[blo:bhi].
+//
+// If IsJunk is not defined:
+//
+// Return (i,j,k) such that a[i:i+k] is equal to b[j:j+k], where
+// alo <= i <= i+k <= ahi
+// blo <= j <= j+k <= bhi
+// and for all (i',j',k') meeting those conditions,
+// k >= k'
+// i <= i'
+// and if i == i', j <= j'
+//
+// In other words, of all maximal matching blocks, return one that
+// starts earliest in a, and of all those maximal matching blocks that
+// start earliest in a, return the one that starts earliest in b.
+//
+// If IsJunk is defined, first the longest matching block is
+// determined as above, but with the additional restriction that no
+// junk element appears in the block. Then that block is extended as
+// far as possible by matching (only) junk elements on both sides. So
+// the resulting block never matches on junk except as identical junk
+// happens to be adjacent to an "interesting" match.
+//
+// If no blocks match, return (alo, blo, 0).
+func (m *SequenceMatcher) findLongestMatch(alo, ahi, blo, bhi int) Match {
+ // CAUTION: stripping common prefix or suffix would be incorrect.
+ // E.g.,
+ // ab
+ // acab
+ // Longest matching block is "ab", but if common prefix is
+ // stripped, it's "a" (tied with "b"). UNIX(tm) diff does so
+ // strip, so ends up claiming that ab is changed to acab by
+ // inserting "ca" in the middle. That's minimal but unintuitive:
+ // "it's obvious" that someone inserted "ac" at the front.
+ // Windiff ends up at the same place as diff, but by pairing up
+ // the unique 'b's and then matching the first two 'a's.
+ besti, bestj, bestsize := alo, blo, 0
+
+ // find longest junk-free match
+ // during an iteration of the loop, j2len[j] = length of longest
+ // junk-free match ending with a[i-1] and b[j]
+ j2len := map[int]int{}
+ for i := alo; i != ahi; i++ {
+ // look at all instances of a[i] in b; note that because
+ // b2j has no junk keys, the loop is skipped if a[i] is junk
+ newj2len := map[int]int{}
+ for _, j := range m.b2j[m.a[i]] {
+ // a[i] matches b[j]
+ if j < blo {
+ continue
+ }
+ if j >= bhi {
+ break
+ }
+ k := j2len[j-1] + 1
+ newj2len[j] = k
+ if k > bestsize {
+ besti, bestj, bestsize = i-k+1, j-k+1, k
+ }
+ }
+ j2len = newj2len
+ }
+
+ // Extend the best by non-junk elements on each end. In particular,
+ // "popular" non-junk elements aren't in b2j, which greatly speeds
+ // the inner loop above, but also means "the best" match so far
+ // doesn't contain any junk *or* popular non-junk elements.
+ for besti > alo && bestj > blo && !m.isBJunk(m.b[bestj-1]) &&
+ m.a[besti-1] == m.b[bestj-1] {
+ besti, bestj, bestsize = besti-1, bestj-1, bestsize+1
+ }
+ for besti+bestsize < ahi && bestj+bestsize < bhi &&
+ !m.isBJunk(m.b[bestj+bestsize]) &&
+ m.a[besti+bestsize] == m.b[bestj+bestsize] {
+ bestsize += 1
+ }
+
+ // Now that we have a wholly interesting match (albeit possibly
+ // empty!), we may as well suck up the matching junk on each
+ // side of it too. Can't think of a good reason not to, and it
+ // saves post-processing the (possibly considerable) expense of
+ // figuring out what to do with it. In the case of an empty
+ // interesting match, this is clearly the right thing to do,
+ // because no other kind of match is possible in the regions.
+ for besti > alo && bestj > blo && m.isBJunk(m.b[bestj-1]) &&
+ m.a[besti-1] == m.b[bestj-1] {
+ besti, bestj, bestsize = besti-1, bestj-1, bestsize+1
+ }
+ for besti+bestsize < ahi && bestj+bestsize < bhi &&
+ m.isBJunk(m.b[bestj+bestsize]) &&
+ m.a[besti+bestsize] == m.b[bestj+bestsize] {
+ bestsize += 1
+ }
+
+ return Match{A: besti, B: bestj, Size: bestsize}
+}
+
+// Return list of triples describing matching subsequences.
+//
+// Each triple is of the form (i, j, n), and means that
+// a[i:i+n] == b[j:j+n]. The triples are monotonically increasing in
+// i and in j. It's also guaranteed that if (i, j, n) and (i', j', n') are
+// adjacent triples in the list, and the second is not the last triple in the
+// list, then i+n != i' or j+n != j'. IOW, adjacent triples never describe
+// adjacent equal blocks.
+//
+// The last triple is a dummy, (len(a), len(b), 0), and is the only
+// triple with n==0.
+func (m *SequenceMatcher) GetMatchingBlocks() []Match {
+ if m.matchingBlocks != nil {
+ return m.matchingBlocks
+ }
+
+ var matchBlocks func(alo, ahi, blo, bhi int, matched []Match) []Match
+ matchBlocks = func(alo, ahi, blo, bhi int, matched []Match) []Match {
+ match := m.findLongestMatch(alo, ahi, blo, bhi)
+ i, j, k := match.A, match.B, match.Size
+ if match.Size > 0 {
+ if alo < i && blo < j {
+ matched = matchBlocks(alo, i, blo, j, matched)
+ }
+ matched = append(matched, match)
+ if i+k < ahi && j+k < bhi {
+ matched = matchBlocks(i+k, ahi, j+k, bhi, matched)
+ }
+ }
+ return matched
+ }
+ matched := matchBlocks(0, len(m.a), 0, len(m.b), nil)
+
+ // It's possible that we have adjacent equal blocks in the
+ // matching_blocks list now.
+ nonAdjacent := []Match{}
+ i1, j1, k1 := 0, 0, 0
+ for _, b := range matched {
+ // Is this block adjacent to i1, j1, k1?
+ i2, j2, k2 := b.A, b.B, b.Size
+ if i1+k1 == i2 && j1+k1 == j2 {
+ // Yes, so collapse them -- this just increases the length of
+ // the first block by the length of the second, and the first
+ // block so lengthened remains the block to compare against.
+ k1 += k2
+ } else {
+ // Not adjacent. Remember the first block (k1==0 means it's
+ // the dummy we started with), and make the second block the
+ // new block to compare against.
+ if k1 > 0 {
+ nonAdjacent = append(nonAdjacent, Match{i1, j1, k1})
+ }
+ i1, j1, k1 = i2, j2, k2
+ }
+ }
+ if k1 > 0 {
+ nonAdjacent = append(nonAdjacent, Match{i1, j1, k1})
+ }
+
+ nonAdjacent = append(nonAdjacent, Match{len(m.a), len(m.b), 0})
+ m.matchingBlocks = nonAdjacent
+ return m.matchingBlocks
+}
+
+// Return list of 5-tuples describing how to turn a into b.
+//
+// Each tuple is of the form (tag, i1, i2, j1, j2). The first tuple
+// has i1 == j1 == 0, and remaining tuples have i1 == the i2 from the
+// tuple preceding it, and likewise for j1 == the previous j2.
+//
+// The tags are characters, with these meanings:
+//
+// 'r' (replace): a[i1:i2] should be replaced by b[j1:j2]
+//
+// 'd' (delete): a[i1:i2] should be deleted, j1==j2 in this case.
+//
+// 'i' (insert): b[j1:j2] should be inserted at a[i1:i1], i1==i2 in this case.
+//
+// 'e' (equal): a[i1:i2] == b[j1:j2]
+func (m *SequenceMatcher) GetOpCodes() []OpCode {
+ if m.opCodes != nil {
+ return m.opCodes
+ }
+ i, j := 0, 0
+ matching := m.GetMatchingBlocks()
+ opCodes := make([]OpCode, 0, len(matching))
+ for _, m := range matching {
+ // invariant: we've pumped out correct diffs to change
+ // a[:i] into b[:j], and the next matching block is
+ // a[ai:ai+size] == b[bj:bj+size]. So we need to pump
+ // out a diff to change a[i:ai] into b[j:bj], pump out
+ // the matching block, and move (i,j) beyond the match
+ ai, bj, size := m.A, m.B, m.Size
+ tag := byte(0)
+ if i < ai && j < bj {
+ tag = 'r'
+ } else if i < ai {
+ tag = 'd'
+ } else if j < bj {
+ tag = 'i'
+ }
+ if tag > 0 {
+ opCodes = append(opCodes, OpCode{tag, i, ai, j, bj})
+ }
+ i, j = ai+size, bj+size
+ // the list of matching blocks is terminated by a
+ // sentinel with size 0
+ if size > 0 {
+ opCodes = append(opCodes, OpCode{'e', ai, i, bj, j})
+ }
+ }
+ m.opCodes = opCodes
+ return m.opCodes
+}
+
+// Isolate change clusters by eliminating ranges with no changes.
+//
+// Return a generator of groups with up to n lines of context.
+// Each group is in the same format as returned by GetOpCodes().
+func (m *SequenceMatcher) GetGroupedOpCodes(n int) [][]OpCode {
+ if n < 0 {
+ n = 3
+ }
+ codes := m.GetOpCodes()
+ if len(codes) == 0 {
+ codes = []OpCode{OpCode{'e', 0, 1, 0, 1}}
+ }
+ // Fixup leading and trailing groups if they show no changes.
+ if codes[0].Tag == 'e' {
+ c := codes[0]
+ i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
+ codes[0] = OpCode{c.Tag, max(i1, i2-n), i2, max(j1, j2-n), j2}
+ }
+ if codes[len(codes)-1].Tag == 'e' {
+ c := codes[len(codes)-1]
+ i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
+ codes[len(codes)-1] = OpCode{c.Tag, i1, min(i2, i1+n), j1, min(j2, j1+n)}
+ }
+ nn := n + n
+ groups := [][]OpCode{}
+ group := []OpCode{}
+ for _, c := range codes {
+ i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
+ // End the current group and start a new one whenever
+ // there is a large range with no changes.
+ if c.Tag == 'e' && i2-i1 > nn {
+ group = append(group, OpCode{c.Tag, i1, min(i2, i1+n),
+ j1, min(j2, j1+n)})
+ groups = append(groups, group)
+ group = []OpCode{}
+ i1, j1 = max(i1, i2-n), max(j1, j2-n)
+ }
+ group = append(group, OpCode{c.Tag, i1, i2, j1, j2})
+ }
+ if len(group) > 0 && !(len(group) == 1 && group[0].Tag == 'e') {
+ groups = append(groups, group)
+ }
+ return groups
+}
+
+// Return a measure of the sequences' similarity (float in [0,1]).
+//
+// Where T is the total number of elements in both sequences, and
+// M is the number of matches, this is 2.0*M / T.
+// Note that this is 1 if the sequences are identical, and 0 if
+// they have nothing in common.
+//
+// .Ratio() is expensive to compute if you haven't already computed
+// .GetMatchingBlocks() or .GetOpCodes(), in which case you may
+// want to try .QuickRatio() or .RealQuickRation() first to get an
+// upper bound.
+func (m *SequenceMatcher) Ratio() float64 {
+ matches := 0
+ for _, m := range m.GetMatchingBlocks() {
+ matches += m.Size
+ }
+ return calculateRatio(matches, len(m.a)+len(m.b))
+}
+
+// Return an upper bound on ratio() relatively quickly.
+//
+// This isn't defined beyond that it is an upper bound on .Ratio(), and
+// is faster to compute.
+func (m *SequenceMatcher) QuickRatio() float64 {
+ // viewing a and b as multisets, set matches to the cardinality
+ // of their intersection; this counts the number of matches
+ // without regard to order, so is clearly an upper bound
+ if m.fullBCount == nil {
+ m.fullBCount = map[string]int{}
+ for _, s := range m.b {
+ m.fullBCount[s] = m.fullBCount[s] + 1
+ }
+ }
+
+ // avail[x] is the number of times x appears in 'b' less the
+ // number of times we've seen it in 'a' so far ... kinda
+ avail := map[string]int{}
+ matches := 0
+ for _, s := range m.a {
+ n, ok := avail[s]
+ if !ok {
+ n = m.fullBCount[s]
+ }
+ avail[s] = n - 1
+ if n > 0 {
+ matches += 1
+ }
+ }
+ return calculateRatio(matches, len(m.a)+len(m.b))
+}
+
+// Return an upper bound on ratio() very quickly.
+//
+// This isn't defined beyond that it is an upper bound on .Ratio(), and
+// is faster to compute than either .Ratio() or .QuickRatio().
+func (m *SequenceMatcher) RealQuickRatio() float64 {
+ la, lb := len(m.a), len(m.b)
+ return calculateRatio(min(la, lb), la+lb)
+}
+
+// Convert range to the "ed" format
+func formatRangeUnified(start, stop int) string {
+ // Per the diff spec at http://www.unix.org/single_unix_specification/
+ beginning := start + 1 // lines start numbering with one
+ length := stop - start
+ if length == 1 {
+ return fmt.Sprintf("%d", beginning)
+ }
+ if length == 0 {
+ beginning -= 1 // empty ranges begin at line just before the range
+ }
+ return fmt.Sprintf("%d,%d", beginning, length)
+}
+
+// Unified diff parameters
+type UnifiedDiff struct {
+ A []string // First sequence lines
+ FromFile string // First file name
+ FromDate string // First file time
+ B []string // Second sequence lines
+ ToFile string // Second file name
+ ToDate string // Second file time
+ Eol string // Headers end of line, defaults to LF
+ Context int // Number of context lines
+}
+
+// Compare two sequences of lines; generate the delta as a unified diff.
+//
+// Unified diffs are a compact way of showing line changes and a few
+// lines of context. The number of context lines is set by 'n' which
+// defaults to three.
+//
+// By default, the diff control lines (those with ---, +++, or @@) are
+// created with a trailing newline. This is helpful so that inputs
+// created from file.readlines() result in diffs that are suitable for
+// file.writelines() since both the inputs and outputs have trailing
+// newlines.
+//
+// For inputs that do not have trailing newlines, set the lineterm
+// argument to "" so that the output will be uniformly newline free.
+//
+// The unidiff format normally has a header for filenames and modification
+// times. Any or all of these may be specified using strings for
+// 'fromfile', 'tofile', 'fromfiledate', and 'tofiledate'.
+// The modification times are normally expressed in the ISO 8601 format.
+func WriteUnifiedDiff(writer io.Writer, diff UnifiedDiff) error {
+ buf := bufio.NewWriter(writer)
+ defer buf.Flush()
+ wf := func(format string, args ...interface{}) error {
+ _, err := buf.WriteString(fmt.Sprintf(format, args...))
+ return err
+ }
+ ws := func(s string) error {
+ _, err := buf.WriteString(s)
+ return err
+ }
+
+ if len(diff.Eol) == 0 {
+ diff.Eol = "\n"
+ }
+
+ started := false
+ m := NewMatcher(diff.A, diff.B)
+ for _, g := range m.GetGroupedOpCodes(diff.Context) {
+ if !started {
+ started = true
+ fromDate := ""
+ if len(diff.FromDate) > 0 {
+ fromDate = "\t" + diff.FromDate
+ }
+ toDate := ""
+ if len(diff.ToDate) > 0 {
+ toDate = "\t" + diff.ToDate
+ }
+ if diff.FromFile != "" || diff.ToFile != "" {
+ err := wf("--- %s%s%s", diff.FromFile, fromDate, diff.Eol)
+ if err != nil {
+ return err
+ }
+ err = wf("+++ %s%s%s", diff.ToFile, toDate, diff.Eol)
+ if err != nil {
+ return err
+ }
+ }
+ }
+ first, last := g[0], g[len(g)-1]
+ range1 := formatRangeUnified(first.I1, last.I2)
+ range2 := formatRangeUnified(first.J1, last.J2)
+ if err := wf("@@ -%s +%s @@%s", range1, range2, diff.Eol); err != nil {
+ return err
+ }
+ for _, c := range g {
+ i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
+ if c.Tag == 'e' {
+ for _, line := range diff.A[i1:i2] {
+ if err := ws(" " + line); err != nil {
+ return err
+ }
+ }
+ continue
+ }
+ if c.Tag == 'r' || c.Tag == 'd' {
+ for _, line := range diff.A[i1:i2] {
+ if err := ws("-" + line); err != nil {
+ return err
+ }
+ }
+ }
+ if c.Tag == 'r' || c.Tag == 'i' {
+ for _, line := range diff.B[j1:j2] {
+ if err := ws("+" + line); err != nil {
+ return err
+ }
+ }
+ }
+ }
+ }
+ return nil
+}
+
+// Like WriteUnifiedDiff but returns the diff a string.
+func GetUnifiedDiffString(diff UnifiedDiff) (string, error) {
+ w := &bytes.Buffer{}
+ err := WriteUnifiedDiff(w, diff)
+ return string(w.Bytes()), err
+}
+
+// Convert range to the "ed" format.
+func formatRangeContext(start, stop int) string {
+ // Per the diff spec at http://www.unix.org/single_unix_specification/
+ beginning := start + 1 // lines start numbering with one
+ length := stop - start
+ if length == 0 {
+ beginning -= 1 // empty ranges begin at line just before the range
+ }
+ if length <= 1 {
+ return fmt.Sprintf("%d", beginning)
+ }
+ return fmt.Sprintf("%d,%d", beginning, beginning+length-1)
+}
+
+type ContextDiff UnifiedDiff
+
+// Compare two sequences of lines; generate the delta as a context diff.
+//
+// Context diffs are a compact way of showing line changes and a few
+// lines of context. The number of context lines is set by diff.Context
+// which defaults to three.
+//
+// By default, the diff control lines (those with *** or ---) are
+// created with a trailing newline.
+//
+// For inputs that do not have trailing newlines, set the diff.Eol
+// argument to "" so that the output will be uniformly newline free.
+//
+// The context diff format normally has a header for filenames and
+// modification times. Any or all of these may be specified using
+// strings for diff.FromFile, diff.ToFile, diff.FromDate, diff.ToDate.
+// The modification times are normally expressed in the ISO 8601 format.
+// If not specified, the strings default to blanks.
+func WriteContextDiff(writer io.Writer, diff ContextDiff) error {
+ buf := bufio.NewWriter(writer)
+ defer buf.Flush()
+ var diffErr error
+ wf := func(format string, args ...interface{}) {
+ _, err := buf.WriteString(fmt.Sprintf(format, args...))
+ if diffErr == nil && err != nil {
+ diffErr = err
+ }
+ }
+ ws := func(s string) {
+ _, err := buf.WriteString(s)
+ if diffErr == nil && err != nil {
+ diffErr = err
+ }
+ }
+
+ if len(diff.Eol) == 0 {
+ diff.Eol = "\n"
+ }
+
+ prefix := map[byte]string{
+ 'i': "+ ",
+ 'd': "- ",
+ 'r': "! ",
+ 'e': " ",
+ }
+
+ started := false
+ m := NewMatcher(diff.A, diff.B)
+ for _, g := range m.GetGroupedOpCodes(diff.Context) {
+ if !started {
+ started = true
+ fromDate := ""
+ if len(diff.FromDate) > 0 {
+ fromDate = "\t" + diff.FromDate
+ }
+ toDate := ""
+ if len(diff.ToDate) > 0 {
+ toDate = "\t" + diff.ToDate
+ }
+ if diff.FromFile != "" || diff.ToFile != "" {
+ wf("*** %s%s%s", diff.FromFile, fromDate, diff.Eol)
+ wf("--- %s%s%s", diff.ToFile, toDate, diff.Eol)
+ }
+ }
+
+ first, last := g[0], g[len(g)-1]
+ ws("***************" + diff.Eol)
+
+ range1 := formatRangeContext(first.I1, last.I2)
+ wf("*** %s ****%s", range1, diff.Eol)
+ for _, c := range g {
+ if c.Tag == 'r' || c.Tag == 'd' {
+ for _, cc := range g {
+ if cc.Tag == 'i' {
+ continue
+ }
+ for _, line := range diff.A[cc.I1:cc.I2] {
+ ws(prefix[cc.Tag] + line)
+ }
+ }
+ break
+ }
+ }
+
+ range2 := formatRangeContext(first.J1, last.J2)
+ wf("--- %s ----%s", range2, diff.Eol)
+ for _, c := range g {
+ if c.Tag == 'r' || c.Tag == 'i' {
+ for _, cc := range g {
+ if cc.Tag == 'd' {
+ continue
+ }
+ for _, line := range diff.B[cc.J1:cc.J2] {
+ ws(prefix[cc.Tag] + line)
+ }
+ }
+ break
+ }
+ }
+ }
+ return diffErr
+}
+
+// Like WriteContextDiff but returns the diff a string.
+func GetContextDiffString(diff ContextDiff) (string, error) {
+ w := &bytes.Buffer{}
+ err := WriteContextDiff(w, diff)
+ return string(w.Bytes()), err
+}
+
+// Split a string on "\n" while preserving them. The output can be used
+// as input for UnifiedDiff and ContextDiff structures.
+func SplitLines(s string) []string {
+ lines := strings.SplitAfter(s, "\n")
+ lines[len(lines)-1] += "\n"
+ return lines
+}
diff --git a/vendor/github.com/stretchr/testify/LICENSE b/vendor/github.com/stretchr/testify/LICENSE
new file mode 100644
index 0000000..f38ec59
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2012-2018 Mat Ryer and Tyler Bunnell
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/vendor/github.com/stretchr/testify/assert/assertion_format.go b/vendor/github.com/stretchr/testify/assert/assertion_format.go
new file mode 100644
index 0000000..e0364e9
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/assertion_format.go
@@ -0,0 +1,566 @@
+/*
+* CODE GENERATED AUTOMATICALLY WITH github.com/stretchr/testify/_codegen
+* THIS FILE MUST NOT BE EDITED BY HAND
+ */
+
+package assert
+
+import (
+ http "net/http"
+ url "net/url"
+ time "time"
+)
+
+// Conditionf uses a Comparison to assert a complex condition.
+func Conditionf(t TestingT, comp Comparison, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Condition(t, comp, append([]interface{}{msg}, args...)...)
+}
+
+// Containsf asserts that the specified string, list(array, slice...) or map contains the
+// specified substring or element.
+//
+// assert.Containsf(t, "Hello World", "World", "error message %s", "formatted")
+// assert.Containsf(t, ["Hello", "World"], "World", "error message %s", "formatted")
+// assert.Containsf(t, {"Hello": "World"}, "Hello", "error message %s", "formatted")
+func Containsf(t TestingT, s interface{}, contains interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Contains(t, s, contains, append([]interface{}{msg}, args...)...)
+}
+
+// DirExistsf checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.
+func DirExistsf(t TestingT, path string, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return DirExists(t, path, append([]interface{}{msg}, args...)...)
+}
+
+// ElementsMatchf asserts that the specified listA(array, slice...) is equal to specified
+// listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
+// the number of appearances of each of them in both lists should match.
+//
+// assert.ElementsMatchf(t, [1, 3, 2, 3], [1, 3, 3, 2], "error message %s", "formatted")
+func ElementsMatchf(t TestingT, listA interface{}, listB interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return ElementsMatch(t, listA, listB, append([]interface{}{msg}, args...)...)
+}
+
+// Emptyf asserts that the specified object is empty. I.e. nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+// assert.Emptyf(t, obj, "error message %s", "formatted")
+func Emptyf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Empty(t, object, append([]interface{}{msg}, args...)...)
+}
+
+// Equalf asserts that two objects are equal.
+//
+// assert.Equalf(t, 123, 123, "error message %s", "formatted")
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses). Function equality
+// cannot be determined and will always fail.
+func Equalf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Equal(t, expected, actual, append([]interface{}{msg}, args...)...)
+}
+
+// EqualErrorf asserts that a function returned an error (i.e. not `nil`)
+// and that it is equal to the provided error.
+//
+// actualObj, err := SomeFunction()
+// assert.EqualErrorf(t, err, expectedErrorString, "error message %s", "formatted")
+func EqualErrorf(t TestingT, theError error, errString string, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return EqualError(t, theError, errString, append([]interface{}{msg}, args...)...)
+}
+
+// EqualValuesf asserts that two objects are equal or convertable to the same types
+// and equal.
+//
+// assert.EqualValuesf(t, uint32(123, "error message %s", "formatted"), int32(123))
+func EqualValuesf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return EqualValues(t, expected, actual, append([]interface{}{msg}, args...)...)
+}
+
+// Errorf asserts that a function returned an error (i.e. not `nil`).
+//
+// actualObj, err := SomeFunction()
+// if assert.Errorf(t, err, "error message %s", "formatted") {
+// assert.Equal(t, expectedErrorf, err)
+// }
+func Errorf(t TestingT, err error, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Error(t, err, append([]interface{}{msg}, args...)...)
+}
+
+// Eventuallyf asserts that given condition will be met in waitFor time,
+// periodically checking target function each tick.
+//
+// assert.Eventuallyf(t, func() bool { return true; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")
+func Eventuallyf(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Eventually(t, condition, waitFor, tick, append([]interface{}{msg}, args...)...)
+}
+
+// Exactlyf asserts that two objects are equal in value and type.
+//
+// assert.Exactlyf(t, int32(123, "error message %s", "formatted"), int64(123))
+func Exactlyf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Exactly(t, expected, actual, append([]interface{}{msg}, args...)...)
+}
+
+// Failf reports a failure through
+func Failf(t TestingT, failureMessage string, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Fail(t, failureMessage, append([]interface{}{msg}, args...)...)
+}
+
+// FailNowf fails test
+func FailNowf(t TestingT, failureMessage string, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return FailNow(t, failureMessage, append([]interface{}{msg}, args...)...)
+}
+
+// Falsef asserts that the specified value is false.
+//
+// assert.Falsef(t, myBool, "error message %s", "formatted")
+func Falsef(t TestingT, value bool, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return False(t, value, append([]interface{}{msg}, args...)...)
+}
+
+// FileExistsf checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.
+func FileExistsf(t TestingT, path string, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return FileExists(t, path, append([]interface{}{msg}, args...)...)
+}
+
+// Greaterf asserts that the first element is greater than the second
+//
+// assert.Greaterf(t, 2, 1, "error message %s", "formatted")
+// assert.Greaterf(t, float64(2, "error message %s", "formatted"), float64(1))
+// assert.Greaterf(t, "b", "a", "error message %s", "formatted")
+func Greaterf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Greater(t, e1, e2, append([]interface{}{msg}, args...)...)
+}
+
+// GreaterOrEqualf asserts that the first element is greater than or equal to the second
+//
+// assert.GreaterOrEqualf(t, 2, 1, "error message %s", "formatted")
+// assert.GreaterOrEqualf(t, 2, 2, "error message %s", "formatted")
+// assert.GreaterOrEqualf(t, "b", "a", "error message %s", "formatted")
+// assert.GreaterOrEqualf(t, "b", "b", "error message %s", "formatted")
+func GreaterOrEqualf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return GreaterOrEqual(t, e1, e2, append([]interface{}{msg}, args...)...)
+}
+
+// HTTPBodyContainsf asserts that a specified handler returns a
+// body that contains a string.
+//
+// assert.HTTPBodyContainsf(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPBodyContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return HTTPBodyContains(t, handler, method, url, values, str, append([]interface{}{msg}, args...)...)
+}
+
+// HTTPBodyNotContainsf asserts that a specified handler returns a
+// body that does not contain a string.
+//
+// assert.HTTPBodyNotContainsf(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPBodyNotContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return HTTPBodyNotContains(t, handler, method, url, values, str, append([]interface{}{msg}, args...)...)
+}
+
+// HTTPErrorf asserts that a specified handler returns an error status code.
+//
+// assert.HTTPErrorf(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).
+func HTTPErrorf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return HTTPError(t, handler, method, url, values, append([]interface{}{msg}, args...)...)
+}
+
+// HTTPRedirectf asserts that a specified handler returns a redirect status code.
+//
+// assert.HTTPRedirectf(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).
+func HTTPRedirectf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return HTTPRedirect(t, handler, method, url, values, append([]interface{}{msg}, args...)...)
+}
+
+// HTTPSuccessf asserts that a specified handler returns a success status code.
+//
+// assert.HTTPSuccessf(t, myHandler, "POST", "http://www.google.com", nil, "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPSuccessf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return HTTPSuccess(t, handler, method, url, values, append([]interface{}{msg}, args...)...)
+}
+
+// Implementsf asserts that an object is implemented by the specified interface.
+//
+// assert.Implementsf(t, (*MyInterface, "error message %s", "formatted")(nil), new(MyObject))
+func Implementsf(t TestingT, interfaceObject interface{}, object interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Implements(t, interfaceObject, object, append([]interface{}{msg}, args...)...)
+}
+
+// InDeltaf asserts that the two numerals are within delta of each other.
+//
+// assert.InDeltaf(t, math.Pi, (22 / 7.0, "error message %s", "formatted"), 0.01)
+func InDeltaf(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return InDelta(t, expected, actual, delta, append([]interface{}{msg}, args...)...)
+}
+
+// InDeltaMapValuesf is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
+func InDeltaMapValuesf(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return InDeltaMapValues(t, expected, actual, delta, append([]interface{}{msg}, args...)...)
+}
+
+// InDeltaSlicef is the same as InDelta, except it compares two slices.
+func InDeltaSlicef(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return InDeltaSlice(t, expected, actual, delta, append([]interface{}{msg}, args...)...)
+}
+
+// InEpsilonf asserts that expected and actual have a relative error less than epsilon
+func InEpsilonf(t TestingT, expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return InEpsilon(t, expected, actual, epsilon, append([]interface{}{msg}, args...)...)
+}
+
+// InEpsilonSlicef is the same as InEpsilon, except it compares each value from two slices.
+func InEpsilonSlicef(t TestingT, expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return InEpsilonSlice(t, expected, actual, epsilon, append([]interface{}{msg}, args...)...)
+}
+
+// IsTypef asserts that the specified objects are of the same type.
+func IsTypef(t TestingT, expectedType interface{}, object interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return IsType(t, expectedType, object, append([]interface{}{msg}, args...)...)
+}
+
+// JSONEqf asserts that two JSON strings are equivalent.
+//
+// assert.JSONEqf(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`, "error message %s", "formatted")
+func JSONEqf(t TestingT, expected string, actual string, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return JSONEq(t, expected, actual, append([]interface{}{msg}, args...)...)
+}
+
+// YAMLEqf asserts that two YAML strings are equivalent.
+func YAMLEqf(t TestingT, expected string, actual string, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return YAMLEq(t, expected, actual, append([]interface{}{msg}, args...)...)
+}
+
+// Lenf asserts that the specified object has specific length.
+// Lenf also fails if the object has a type that len() not accept.
+//
+// assert.Lenf(t, mySlice, 3, "error message %s", "formatted")
+func Lenf(t TestingT, object interface{}, length int, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Len(t, object, length, append([]interface{}{msg}, args...)...)
+}
+
+// Lessf asserts that the first element is less than the second
+//
+// assert.Lessf(t, 1, 2, "error message %s", "formatted")
+// assert.Lessf(t, float64(1, "error message %s", "formatted"), float64(2))
+// assert.Lessf(t, "a", "b", "error message %s", "formatted")
+func Lessf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Less(t, e1, e2, append([]interface{}{msg}, args...)...)
+}
+
+// LessOrEqualf asserts that the first element is less than or equal to the second
+//
+// assert.LessOrEqualf(t, 1, 2, "error message %s", "formatted")
+// assert.LessOrEqualf(t, 2, 2, "error message %s", "formatted")
+// assert.LessOrEqualf(t, "a", "b", "error message %s", "formatted")
+// assert.LessOrEqualf(t, "b", "b", "error message %s", "formatted")
+func LessOrEqualf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return LessOrEqual(t, e1, e2, append([]interface{}{msg}, args...)...)
+}
+
+// Nilf asserts that the specified object is nil.
+//
+// assert.Nilf(t, err, "error message %s", "formatted")
+func Nilf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Nil(t, object, append([]interface{}{msg}, args...)...)
+}
+
+// NoErrorf asserts that a function returned no error (i.e. `nil`).
+//
+// actualObj, err := SomeFunction()
+// if assert.NoErrorf(t, err, "error message %s", "formatted") {
+// assert.Equal(t, expectedObj, actualObj)
+// }
+func NoErrorf(t TestingT, err error, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return NoError(t, err, append([]interface{}{msg}, args...)...)
+}
+
+// NotContainsf asserts that the specified string, list(array, slice...) or map does NOT contain the
+// specified substring or element.
+//
+// assert.NotContainsf(t, "Hello World", "Earth", "error message %s", "formatted")
+// assert.NotContainsf(t, ["Hello", "World"], "Earth", "error message %s", "formatted")
+// assert.NotContainsf(t, {"Hello": "World"}, "Earth", "error message %s", "formatted")
+func NotContainsf(t TestingT, s interface{}, contains interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotContains(t, s, contains, append([]interface{}{msg}, args...)...)
+}
+
+// NotEmptyf asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+// if assert.NotEmptyf(t, obj, "error message %s", "formatted") {
+// assert.Equal(t, "two", obj[1])
+// }
+func NotEmptyf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotEmpty(t, object, append([]interface{}{msg}, args...)...)
+}
+
+// NotEqualf asserts that the specified values are NOT equal.
+//
+// assert.NotEqualf(t, obj1, obj2, "error message %s", "formatted")
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses).
+func NotEqualf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotEqual(t, expected, actual, append([]interface{}{msg}, args...)...)
+}
+
+// NotNilf asserts that the specified object is not nil.
+//
+// assert.NotNilf(t, err, "error message %s", "formatted")
+func NotNilf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotNil(t, object, append([]interface{}{msg}, args...)...)
+}
+
+// NotPanicsf asserts that the code inside the specified PanicTestFunc does NOT panic.
+//
+// assert.NotPanicsf(t, func(){ RemainCalm() }, "error message %s", "formatted")
+func NotPanicsf(t TestingT, f PanicTestFunc, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotPanics(t, f, append([]interface{}{msg}, args...)...)
+}
+
+// NotRegexpf asserts that a specified regexp does not match a string.
+//
+// assert.NotRegexpf(t, regexp.MustCompile("starts", "error message %s", "formatted"), "it's starting")
+// assert.NotRegexpf(t, "^start", "it's not starting", "error message %s", "formatted")
+func NotRegexpf(t TestingT, rx interface{}, str interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotRegexp(t, rx, str, append([]interface{}{msg}, args...)...)
+}
+
+// NotSubsetf asserts that the specified list(array, slice...) contains not all
+// elements given in the specified subset(array, slice...).
+//
+// assert.NotSubsetf(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]", "error message %s", "formatted")
+func NotSubsetf(t TestingT, list interface{}, subset interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotSubset(t, list, subset, append([]interface{}{msg}, args...)...)
+}
+
+// NotZerof asserts that i is not the zero value for its type.
+func NotZerof(t TestingT, i interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotZero(t, i, append([]interface{}{msg}, args...)...)
+}
+
+// Panicsf asserts that the code inside the specified PanicTestFunc panics.
+//
+// assert.Panicsf(t, func(){ GoCrazy() }, "error message %s", "formatted")
+func Panicsf(t TestingT, f PanicTestFunc, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Panics(t, f, append([]interface{}{msg}, args...)...)
+}
+
+// PanicsWithValuef asserts that the code inside the specified PanicTestFunc panics, and that
+// the recovered panic value equals the expected panic value.
+//
+// assert.PanicsWithValuef(t, "crazy error", func(){ GoCrazy() }, "error message %s", "formatted")
+func PanicsWithValuef(t TestingT, expected interface{}, f PanicTestFunc, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return PanicsWithValue(t, expected, f, append([]interface{}{msg}, args...)...)
+}
+
+// Regexpf asserts that a specified regexp matches a string.
+//
+// assert.Regexpf(t, regexp.MustCompile("start", "error message %s", "formatted"), "it's starting")
+// assert.Regexpf(t, "start...$", "it's not starting", "error message %s", "formatted")
+func Regexpf(t TestingT, rx interface{}, str interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Regexp(t, rx, str, append([]interface{}{msg}, args...)...)
+}
+
+// Samef asserts that two pointers reference the same object.
+//
+// assert.Samef(t, ptr1, ptr2, "error message %s", "formatted")
+//
+// Both arguments must be pointer variables. Pointer variable sameness is
+// determined based on the equality of both type and value.
+func Samef(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Same(t, expected, actual, append([]interface{}{msg}, args...)...)
+}
+
+// Subsetf asserts that the specified list(array, slice...) contains all
+// elements given in the specified subset(array, slice...).
+//
+// assert.Subsetf(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]", "error message %s", "formatted")
+func Subsetf(t TestingT, list interface{}, subset interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Subset(t, list, subset, append([]interface{}{msg}, args...)...)
+}
+
+// Truef asserts that the specified value is true.
+//
+// assert.Truef(t, myBool, "error message %s", "formatted")
+func Truef(t TestingT, value bool, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return True(t, value, append([]interface{}{msg}, args...)...)
+}
+
+// WithinDurationf asserts that the two times are within duration delta of each other.
+//
+// assert.WithinDurationf(t, time.Now(), time.Now(), 10*time.Second, "error message %s", "formatted")
+func WithinDurationf(t TestingT, expected time.Time, actual time.Time, delta time.Duration, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return WithinDuration(t, expected, actual, delta, append([]interface{}{msg}, args...)...)
+}
+
+// Zerof asserts that i is the zero value for its type.
+func Zerof(t TestingT, i interface{}, msg string, args ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ return Zero(t, i, append([]interface{}{msg}, args...)...)
+}
diff --git a/vendor/github.com/stretchr/testify/assert/assertion_format.go.tmpl b/vendor/github.com/stretchr/testify/assert/assertion_format.go.tmpl
new file mode 100644
index 0000000..d2bb0b8
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/assertion_format.go.tmpl
@@ -0,0 +1,5 @@
+{{.CommentFormat}}
+func {{.DocInfo.Name}}f(t TestingT, {{.ParamsFormat}}) bool {
+ if h, ok := t.(tHelper); ok { h.Helper() }
+ return {{.DocInfo.Name}}(t, {{.ForwardedParamsFormat}})
+}
diff --git a/vendor/github.com/stretchr/testify/assert/assertion_forward.go b/vendor/github.com/stretchr/testify/assert/assertion_forward.go
new file mode 100644
index 0000000..2683040
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/assertion_forward.go
@@ -0,0 +1,1120 @@
+/*
+* CODE GENERATED AUTOMATICALLY WITH github.com/stretchr/testify/_codegen
+* THIS FILE MUST NOT BE EDITED BY HAND
+ */
+
+package assert
+
+import (
+ http "net/http"
+ url "net/url"
+ time "time"
+)
+
+// Condition uses a Comparison to assert a complex condition.
+func (a *Assertions) Condition(comp Comparison, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Condition(a.t, comp, msgAndArgs...)
+}
+
+// Conditionf uses a Comparison to assert a complex condition.
+func (a *Assertions) Conditionf(comp Comparison, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Conditionf(a.t, comp, msg, args...)
+}
+
+// Contains asserts that the specified string, list(array, slice...) or map contains the
+// specified substring or element.
+//
+// a.Contains("Hello World", "World")
+// a.Contains(["Hello", "World"], "World")
+// a.Contains({"Hello": "World"}, "Hello")
+func (a *Assertions) Contains(s interface{}, contains interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Contains(a.t, s, contains, msgAndArgs...)
+}
+
+// Containsf asserts that the specified string, list(array, slice...) or map contains the
+// specified substring or element.
+//
+// a.Containsf("Hello World", "World", "error message %s", "formatted")
+// a.Containsf(["Hello", "World"], "World", "error message %s", "formatted")
+// a.Containsf({"Hello": "World"}, "Hello", "error message %s", "formatted")
+func (a *Assertions) Containsf(s interface{}, contains interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Containsf(a.t, s, contains, msg, args...)
+}
+
+// DirExists checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.
+func (a *Assertions) DirExists(path string, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return DirExists(a.t, path, msgAndArgs...)
+}
+
+// DirExistsf checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.
+func (a *Assertions) DirExistsf(path string, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return DirExistsf(a.t, path, msg, args...)
+}
+
+// ElementsMatch asserts that the specified listA(array, slice...) is equal to specified
+// listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
+// the number of appearances of each of them in both lists should match.
+//
+// a.ElementsMatch([1, 3, 2, 3], [1, 3, 3, 2])
+func (a *Assertions) ElementsMatch(listA interface{}, listB interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return ElementsMatch(a.t, listA, listB, msgAndArgs...)
+}
+
+// ElementsMatchf asserts that the specified listA(array, slice...) is equal to specified
+// listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
+// the number of appearances of each of them in both lists should match.
+//
+// a.ElementsMatchf([1, 3, 2, 3], [1, 3, 3, 2], "error message %s", "formatted")
+func (a *Assertions) ElementsMatchf(listA interface{}, listB interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return ElementsMatchf(a.t, listA, listB, msg, args...)
+}
+
+// Empty asserts that the specified object is empty. I.e. nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+// a.Empty(obj)
+func (a *Assertions) Empty(object interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Empty(a.t, object, msgAndArgs...)
+}
+
+// Emptyf asserts that the specified object is empty. I.e. nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+// a.Emptyf(obj, "error message %s", "formatted")
+func (a *Assertions) Emptyf(object interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Emptyf(a.t, object, msg, args...)
+}
+
+// Equal asserts that two objects are equal.
+//
+// a.Equal(123, 123)
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses). Function equality
+// cannot be determined and will always fail.
+func (a *Assertions) Equal(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Equal(a.t, expected, actual, msgAndArgs...)
+}
+
+// EqualError asserts that a function returned an error (i.e. not `nil`)
+// and that it is equal to the provided error.
+//
+// actualObj, err := SomeFunction()
+// a.EqualError(err, expectedErrorString)
+func (a *Assertions) EqualError(theError error, errString string, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return EqualError(a.t, theError, errString, msgAndArgs...)
+}
+
+// EqualErrorf asserts that a function returned an error (i.e. not `nil`)
+// and that it is equal to the provided error.
+//
+// actualObj, err := SomeFunction()
+// a.EqualErrorf(err, expectedErrorString, "error message %s", "formatted")
+func (a *Assertions) EqualErrorf(theError error, errString string, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return EqualErrorf(a.t, theError, errString, msg, args...)
+}
+
+// EqualValues asserts that two objects are equal or convertable to the same types
+// and equal.
+//
+// a.EqualValues(uint32(123), int32(123))
+func (a *Assertions) EqualValues(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return EqualValues(a.t, expected, actual, msgAndArgs...)
+}
+
+// EqualValuesf asserts that two objects are equal or convertable to the same types
+// and equal.
+//
+// a.EqualValuesf(uint32(123, "error message %s", "formatted"), int32(123))
+func (a *Assertions) EqualValuesf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return EqualValuesf(a.t, expected, actual, msg, args...)
+}
+
+// Equalf asserts that two objects are equal.
+//
+// a.Equalf(123, 123, "error message %s", "formatted")
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses). Function equality
+// cannot be determined and will always fail.
+func (a *Assertions) Equalf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Equalf(a.t, expected, actual, msg, args...)
+}
+
+// Error asserts that a function returned an error (i.e. not `nil`).
+//
+// actualObj, err := SomeFunction()
+// if a.Error(err) {
+// assert.Equal(t, expectedError, err)
+// }
+func (a *Assertions) Error(err error, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Error(a.t, err, msgAndArgs...)
+}
+
+// Errorf asserts that a function returned an error (i.e. not `nil`).
+//
+// actualObj, err := SomeFunction()
+// if a.Errorf(err, "error message %s", "formatted") {
+// assert.Equal(t, expectedErrorf, err)
+// }
+func (a *Assertions) Errorf(err error, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Errorf(a.t, err, msg, args...)
+}
+
+// Eventually asserts that given condition will be met in waitFor time,
+// periodically checking target function each tick.
+//
+// a.Eventually(func() bool { return true; }, time.Second, 10*time.Millisecond)
+func (a *Assertions) Eventually(condition func() bool, waitFor time.Duration, tick time.Duration, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Eventually(a.t, condition, waitFor, tick, msgAndArgs...)
+}
+
+// Eventuallyf asserts that given condition will be met in waitFor time,
+// periodically checking target function each tick.
+//
+// a.Eventuallyf(func() bool { return true; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")
+func (a *Assertions) Eventuallyf(condition func() bool, waitFor time.Duration, tick time.Duration, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Eventuallyf(a.t, condition, waitFor, tick, msg, args...)
+}
+
+// Exactly asserts that two objects are equal in value and type.
+//
+// a.Exactly(int32(123), int64(123))
+func (a *Assertions) Exactly(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Exactly(a.t, expected, actual, msgAndArgs...)
+}
+
+// Exactlyf asserts that two objects are equal in value and type.
+//
+// a.Exactlyf(int32(123, "error message %s", "formatted"), int64(123))
+func (a *Assertions) Exactlyf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Exactlyf(a.t, expected, actual, msg, args...)
+}
+
+// Fail reports a failure through
+func (a *Assertions) Fail(failureMessage string, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Fail(a.t, failureMessage, msgAndArgs...)
+}
+
+// FailNow fails test
+func (a *Assertions) FailNow(failureMessage string, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return FailNow(a.t, failureMessage, msgAndArgs...)
+}
+
+// FailNowf fails test
+func (a *Assertions) FailNowf(failureMessage string, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return FailNowf(a.t, failureMessage, msg, args...)
+}
+
+// Failf reports a failure through
+func (a *Assertions) Failf(failureMessage string, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Failf(a.t, failureMessage, msg, args...)
+}
+
+// False asserts that the specified value is false.
+//
+// a.False(myBool)
+func (a *Assertions) False(value bool, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return False(a.t, value, msgAndArgs...)
+}
+
+// Falsef asserts that the specified value is false.
+//
+// a.Falsef(myBool, "error message %s", "formatted")
+func (a *Assertions) Falsef(value bool, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Falsef(a.t, value, msg, args...)
+}
+
+// FileExists checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.
+func (a *Assertions) FileExists(path string, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return FileExists(a.t, path, msgAndArgs...)
+}
+
+// FileExistsf checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.
+func (a *Assertions) FileExistsf(path string, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return FileExistsf(a.t, path, msg, args...)
+}
+
+// Greater asserts that the first element is greater than the second
+//
+// a.Greater(2, 1)
+// a.Greater(float64(2), float64(1))
+// a.Greater("b", "a")
+func (a *Assertions) Greater(e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Greater(a.t, e1, e2, msgAndArgs...)
+}
+
+// GreaterOrEqual asserts that the first element is greater than or equal to the second
+//
+// a.GreaterOrEqual(2, 1)
+// a.GreaterOrEqual(2, 2)
+// a.GreaterOrEqual("b", "a")
+// a.GreaterOrEqual("b", "b")
+func (a *Assertions) GreaterOrEqual(e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return GreaterOrEqual(a.t, e1, e2, msgAndArgs...)
+}
+
+// GreaterOrEqualf asserts that the first element is greater than or equal to the second
+//
+// a.GreaterOrEqualf(2, 1, "error message %s", "formatted")
+// a.GreaterOrEqualf(2, 2, "error message %s", "formatted")
+// a.GreaterOrEqualf("b", "a", "error message %s", "formatted")
+// a.GreaterOrEqualf("b", "b", "error message %s", "formatted")
+func (a *Assertions) GreaterOrEqualf(e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return GreaterOrEqualf(a.t, e1, e2, msg, args...)
+}
+
+// Greaterf asserts that the first element is greater than the second
+//
+// a.Greaterf(2, 1, "error message %s", "formatted")
+// a.Greaterf(float64(2, "error message %s", "formatted"), float64(1))
+// a.Greaterf("b", "a", "error message %s", "formatted")
+func (a *Assertions) Greaterf(e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Greaterf(a.t, e1, e2, msg, args...)
+}
+
+// HTTPBodyContains asserts that a specified handler returns a
+// body that contains a string.
+//
+// a.HTTPBodyContains(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPBodyContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return HTTPBodyContains(a.t, handler, method, url, values, str, msgAndArgs...)
+}
+
+// HTTPBodyContainsf asserts that a specified handler returns a
+// body that contains a string.
+//
+// a.HTTPBodyContainsf(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPBodyContainsf(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return HTTPBodyContainsf(a.t, handler, method, url, values, str, msg, args...)
+}
+
+// HTTPBodyNotContains asserts that a specified handler returns a
+// body that does not contain a string.
+//
+// a.HTTPBodyNotContains(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPBodyNotContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return HTTPBodyNotContains(a.t, handler, method, url, values, str, msgAndArgs...)
+}
+
+// HTTPBodyNotContainsf asserts that a specified handler returns a
+// body that does not contain a string.
+//
+// a.HTTPBodyNotContainsf(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPBodyNotContainsf(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return HTTPBodyNotContainsf(a.t, handler, method, url, values, str, msg, args...)
+}
+
+// HTTPError asserts that a specified handler returns an error status code.
+//
+// a.HTTPError(myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPError(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return HTTPError(a.t, handler, method, url, values, msgAndArgs...)
+}
+
+// HTTPErrorf asserts that a specified handler returns an error status code.
+//
+// a.HTTPErrorf(myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).
+func (a *Assertions) HTTPErrorf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return HTTPErrorf(a.t, handler, method, url, values, msg, args...)
+}
+
+// HTTPRedirect asserts that a specified handler returns a redirect status code.
+//
+// a.HTTPRedirect(myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPRedirect(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return HTTPRedirect(a.t, handler, method, url, values, msgAndArgs...)
+}
+
+// HTTPRedirectf asserts that a specified handler returns a redirect status code.
+//
+// a.HTTPRedirectf(myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).
+func (a *Assertions) HTTPRedirectf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return HTTPRedirectf(a.t, handler, method, url, values, msg, args...)
+}
+
+// HTTPSuccess asserts that a specified handler returns a success status code.
+//
+// a.HTTPSuccess(myHandler, "POST", "http://www.google.com", nil)
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPSuccess(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return HTTPSuccess(a.t, handler, method, url, values, msgAndArgs...)
+}
+
+// HTTPSuccessf asserts that a specified handler returns a success status code.
+//
+// a.HTTPSuccessf(myHandler, "POST", "http://www.google.com", nil, "error message %s", "formatted")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPSuccessf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return HTTPSuccessf(a.t, handler, method, url, values, msg, args...)
+}
+
+// Implements asserts that an object is implemented by the specified interface.
+//
+// a.Implements((*MyInterface)(nil), new(MyObject))
+func (a *Assertions) Implements(interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Implements(a.t, interfaceObject, object, msgAndArgs...)
+}
+
+// Implementsf asserts that an object is implemented by the specified interface.
+//
+// a.Implementsf((*MyInterface, "error message %s", "formatted")(nil), new(MyObject))
+func (a *Assertions) Implementsf(interfaceObject interface{}, object interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Implementsf(a.t, interfaceObject, object, msg, args...)
+}
+
+// InDelta asserts that the two numerals are within delta of each other.
+//
+// a.InDelta(math.Pi, (22 / 7.0), 0.01)
+func (a *Assertions) InDelta(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return InDelta(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+// InDeltaMapValues is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
+func (a *Assertions) InDeltaMapValues(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return InDeltaMapValues(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+// InDeltaMapValuesf is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
+func (a *Assertions) InDeltaMapValuesf(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return InDeltaMapValuesf(a.t, expected, actual, delta, msg, args...)
+}
+
+// InDeltaSlice is the same as InDelta, except it compares two slices.
+func (a *Assertions) InDeltaSlice(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return InDeltaSlice(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+// InDeltaSlicef is the same as InDelta, except it compares two slices.
+func (a *Assertions) InDeltaSlicef(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return InDeltaSlicef(a.t, expected, actual, delta, msg, args...)
+}
+
+// InDeltaf asserts that the two numerals are within delta of each other.
+//
+// a.InDeltaf(math.Pi, (22 / 7.0, "error message %s", "formatted"), 0.01)
+func (a *Assertions) InDeltaf(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return InDeltaf(a.t, expected, actual, delta, msg, args...)
+}
+
+// InEpsilon asserts that expected and actual have a relative error less than epsilon
+func (a *Assertions) InEpsilon(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return InEpsilon(a.t, expected, actual, epsilon, msgAndArgs...)
+}
+
+// InEpsilonSlice is the same as InEpsilon, except it compares each value from two slices.
+func (a *Assertions) InEpsilonSlice(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return InEpsilonSlice(a.t, expected, actual, epsilon, msgAndArgs...)
+}
+
+// InEpsilonSlicef is the same as InEpsilon, except it compares each value from two slices.
+func (a *Assertions) InEpsilonSlicef(expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return InEpsilonSlicef(a.t, expected, actual, epsilon, msg, args...)
+}
+
+// InEpsilonf asserts that expected and actual have a relative error less than epsilon
+func (a *Assertions) InEpsilonf(expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return InEpsilonf(a.t, expected, actual, epsilon, msg, args...)
+}
+
+// IsType asserts that the specified objects are of the same type.
+func (a *Assertions) IsType(expectedType interface{}, object interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return IsType(a.t, expectedType, object, msgAndArgs...)
+}
+
+// IsTypef asserts that the specified objects are of the same type.
+func (a *Assertions) IsTypef(expectedType interface{}, object interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return IsTypef(a.t, expectedType, object, msg, args...)
+}
+
+// JSONEq asserts that two JSON strings are equivalent.
+//
+// a.JSONEq(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
+func (a *Assertions) JSONEq(expected string, actual string, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return JSONEq(a.t, expected, actual, msgAndArgs...)
+}
+
+// JSONEqf asserts that two JSON strings are equivalent.
+//
+// a.JSONEqf(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`, "error message %s", "formatted")
+func (a *Assertions) JSONEqf(expected string, actual string, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return JSONEqf(a.t, expected, actual, msg, args...)
+}
+
+// YAMLEq asserts that two YAML strings are equivalent.
+func (a *Assertions) YAMLEq(expected string, actual string, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return YAMLEq(a.t, expected, actual, msgAndArgs...)
+}
+
+// YAMLEqf asserts that two YAML strings are equivalent.
+func (a *Assertions) YAMLEqf(expected string, actual string, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return YAMLEqf(a.t, expected, actual, msg, args...)
+}
+
+// Len asserts that the specified object has specific length.
+// Len also fails if the object has a type that len() not accept.
+//
+// a.Len(mySlice, 3)
+func (a *Assertions) Len(object interface{}, length int, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Len(a.t, object, length, msgAndArgs...)
+}
+
+// Lenf asserts that the specified object has specific length.
+// Lenf also fails if the object has a type that len() not accept.
+//
+// a.Lenf(mySlice, 3, "error message %s", "formatted")
+func (a *Assertions) Lenf(object interface{}, length int, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Lenf(a.t, object, length, msg, args...)
+}
+
+// Less asserts that the first element is less than the second
+//
+// a.Less(1, 2)
+// a.Less(float64(1), float64(2))
+// a.Less("a", "b")
+func (a *Assertions) Less(e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Less(a.t, e1, e2, msgAndArgs...)
+}
+
+// LessOrEqual asserts that the first element is less than or equal to the second
+//
+// a.LessOrEqual(1, 2)
+// a.LessOrEqual(2, 2)
+// a.LessOrEqual("a", "b")
+// a.LessOrEqual("b", "b")
+func (a *Assertions) LessOrEqual(e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return LessOrEqual(a.t, e1, e2, msgAndArgs...)
+}
+
+// LessOrEqualf asserts that the first element is less than or equal to the second
+//
+// a.LessOrEqualf(1, 2, "error message %s", "formatted")
+// a.LessOrEqualf(2, 2, "error message %s", "formatted")
+// a.LessOrEqualf("a", "b", "error message %s", "formatted")
+// a.LessOrEqualf("b", "b", "error message %s", "formatted")
+func (a *Assertions) LessOrEqualf(e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return LessOrEqualf(a.t, e1, e2, msg, args...)
+}
+
+// Lessf asserts that the first element is less than the second
+//
+// a.Lessf(1, 2, "error message %s", "formatted")
+// a.Lessf(float64(1, "error message %s", "formatted"), float64(2))
+// a.Lessf("a", "b", "error message %s", "formatted")
+func (a *Assertions) Lessf(e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Lessf(a.t, e1, e2, msg, args...)
+}
+
+// Nil asserts that the specified object is nil.
+//
+// a.Nil(err)
+func (a *Assertions) Nil(object interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Nil(a.t, object, msgAndArgs...)
+}
+
+// Nilf asserts that the specified object is nil.
+//
+// a.Nilf(err, "error message %s", "formatted")
+func (a *Assertions) Nilf(object interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Nilf(a.t, object, msg, args...)
+}
+
+// NoError asserts that a function returned no error (i.e. `nil`).
+//
+// actualObj, err := SomeFunction()
+// if a.NoError(err) {
+// assert.Equal(t, expectedObj, actualObj)
+// }
+func (a *Assertions) NoError(err error, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NoError(a.t, err, msgAndArgs...)
+}
+
+// NoErrorf asserts that a function returned no error (i.e. `nil`).
+//
+// actualObj, err := SomeFunction()
+// if a.NoErrorf(err, "error message %s", "formatted") {
+// assert.Equal(t, expectedObj, actualObj)
+// }
+func (a *Assertions) NoErrorf(err error, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NoErrorf(a.t, err, msg, args...)
+}
+
+// NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the
+// specified substring or element.
+//
+// a.NotContains("Hello World", "Earth")
+// a.NotContains(["Hello", "World"], "Earth")
+// a.NotContains({"Hello": "World"}, "Earth")
+func (a *Assertions) NotContains(s interface{}, contains interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotContains(a.t, s, contains, msgAndArgs...)
+}
+
+// NotContainsf asserts that the specified string, list(array, slice...) or map does NOT contain the
+// specified substring or element.
+//
+// a.NotContainsf("Hello World", "Earth", "error message %s", "formatted")
+// a.NotContainsf(["Hello", "World"], "Earth", "error message %s", "formatted")
+// a.NotContainsf({"Hello": "World"}, "Earth", "error message %s", "formatted")
+func (a *Assertions) NotContainsf(s interface{}, contains interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotContainsf(a.t, s, contains, msg, args...)
+}
+
+// NotEmpty asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+// if a.NotEmpty(obj) {
+// assert.Equal(t, "two", obj[1])
+// }
+func (a *Assertions) NotEmpty(object interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotEmpty(a.t, object, msgAndArgs...)
+}
+
+// NotEmptyf asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+// if a.NotEmptyf(obj, "error message %s", "formatted") {
+// assert.Equal(t, "two", obj[1])
+// }
+func (a *Assertions) NotEmptyf(object interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotEmptyf(a.t, object, msg, args...)
+}
+
+// NotEqual asserts that the specified values are NOT equal.
+//
+// a.NotEqual(obj1, obj2)
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses).
+func (a *Assertions) NotEqual(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotEqual(a.t, expected, actual, msgAndArgs...)
+}
+
+// NotEqualf asserts that the specified values are NOT equal.
+//
+// a.NotEqualf(obj1, obj2, "error message %s", "formatted")
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses).
+func (a *Assertions) NotEqualf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotEqualf(a.t, expected, actual, msg, args...)
+}
+
+// NotNil asserts that the specified object is not nil.
+//
+// a.NotNil(err)
+func (a *Assertions) NotNil(object interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotNil(a.t, object, msgAndArgs...)
+}
+
+// NotNilf asserts that the specified object is not nil.
+//
+// a.NotNilf(err, "error message %s", "formatted")
+func (a *Assertions) NotNilf(object interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotNilf(a.t, object, msg, args...)
+}
+
+// NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic.
+//
+// a.NotPanics(func(){ RemainCalm() })
+func (a *Assertions) NotPanics(f PanicTestFunc, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotPanics(a.t, f, msgAndArgs...)
+}
+
+// NotPanicsf asserts that the code inside the specified PanicTestFunc does NOT panic.
+//
+// a.NotPanicsf(func(){ RemainCalm() }, "error message %s", "formatted")
+func (a *Assertions) NotPanicsf(f PanicTestFunc, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotPanicsf(a.t, f, msg, args...)
+}
+
+// NotRegexp asserts that a specified regexp does not match a string.
+//
+// a.NotRegexp(regexp.MustCompile("starts"), "it's starting")
+// a.NotRegexp("^start", "it's not starting")
+func (a *Assertions) NotRegexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotRegexp(a.t, rx, str, msgAndArgs...)
+}
+
+// NotRegexpf asserts that a specified regexp does not match a string.
+//
+// a.NotRegexpf(regexp.MustCompile("starts", "error message %s", "formatted"), "it's starting")
+// a.NotRegexpf("^start", "it's not starting", "error message %s", "formatted")
+func (a *Assertions) NotRegexpf(rx interface{}, str interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotRegexpf(a.t, rx, str, msg, args...)
+}
+
+// NotSubset asserts that the specified list(array, slice...) contains not all
+// elements given in the specified subset(array, slice...).
+//
+// a.NotSubset([1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]")
+func (a *Assertions) NotSubset(list interface{}, subset interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotSubset(a.t, list, subset, msgAndArgs...)
+}
+
+// NotSubsetf asserts that the specified list(array, slice...) contains not all
+// elements given in the specified subset(array, slice...).
+//
+// a.NotSubsetf([1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]", "error message %s", "formatted")
+func (a *Assertions) NotSubsetf(list interface{}, subset interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotSubsetf(a.t, list, subset, msg, args...)
+}
+
+// NotZero asserts that i is not the zero value for its type.
+func (a *Assertions) NotZero(i interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotZero(a.t, i, msgAndArgs...)
+}
+
+// NotZerof asserts that i is not the zero value for its type.
+func (a *Assertions) NotZerof(i interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return NotZerof(a.t, i, msg, args...)
+}
+
+// Panics asserts that the code inside the specified PanicTestFunc panics.
+//
+// a.Panics(func(){ GoCrazy() })
+func (a *Assertions) Panics(f PanicTestFunc, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Panics(a.t, f, msgAndArgs...)
+}
+
+// PanicsWithValue asserts that the code inside the specified PanicTestFunc panics, and that
+// the recovered panic value equals the expected panic value.
+//
+// a.PanicsWithValue("crazy error", func(){ GoCrazy() })
+func (a *Assertions) PanicsWithValue(expected interface{}, f PanicTestFunc, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return PanicsWithValue(a.t, expected, f, msgAndArgs...)
+}
+
+// PanicsWithValuef asserts that the code inside the specified PanicTestFunc panics, and that
+// the recovered panic value equals the expected panic value.
+//
+// a.PanicsWithValuef("crazy error", func(){ GoCrazy() }, "error message %s", "formatted")
+func (a *Assertions) PanicsWithValuef(expected interface{}, f PanicTestFunc, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return PanicsWithValuef(a.t, expected, f, msg, args...)
+}
+
+// Panicsf asserts that the code inside the specified PanicTestFunc panics.
+//
+// a.Panicsf(func(){ GoCrazy() }, "error message %s", "formatted")
+func (a *Assertions) Panicsf(f PanicTestFunc, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Panicsf(a.t, f, msg, args...)
+}
+
+// Regexp asserts that a specified regexp matches a string.
+//
+// a.Regexp(regexp.MustCompile("start"), "it's starting")
+// a.Regexp("start...$", "it's not starting")
+func (a *Assertions) Regexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Regexp(a.t, rx, str, msgAndArgs...)
+}
+
+// Regexpf asserts that a specified regexp matches a string.
+//
+// a.Regexpf(regexp.MustCompile("start", "error message %s", "formatted"), "it's starting")
+// a.Regexpf("start...$", "it's not starting", "error message %s", "formatted")
+func (a *Assertions) Regexpf(rx interface{}, str interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Regexpf(a.t, rx, str, msg, args...)
+}
+
+// Same asserts that two pointers reference the same object.
+//
+// a.Same(ptr1, ptr2)
+//
+// Both arguments must be pointer variables. Pointer variable sameness is
+// determined based on the equality of both type and value.
+func (a *Assertions) Same(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Same(a.t, expected, actual, msgAndArgs...)
+}
+
+// Samef asserts that two pointers reference the same object.
+//
+// a.Samef(ptr1, ptr2, "error message %s", "formatted")
+//
+// Both arguments must be pointer variables. Pointer variable sameness is
+// determined based on the equality of both type and value.
+func (a *Assertions) Samef(expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Samef(a.t, expected, actual, msg, args...)
+}
+
+// Subset asserts that the specified list(array, slice...) contains all
+// elements given in the specified subset(array, slice...).
+//
+// a.Subset([1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]")
+func (a *Assertions) Subset(list interface{}, subset interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Subset(a.t, list, subset, msgAndArgs...)
+}
+
+// Subsetf asserts that the specified list(array, slice...) contains all
+// elements given in the specified subset(array, slice...).
+//
+// a.Subsetf([1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]", "error message %s", "formatted")
+func (a *Assertions) Subsetf(list interface{}, subset interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Subsetf(a.t, list, subset, msg, args...)
+}
+
+// True asserts that the specified value is true.
+//
+// a.True(myBool)
+func (a *Assertions) True(value bool, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return True(a.t, value, msgAndArgs...)
+}
+
+// Truef asserts that the specified value is true.
+//
+// a.Truef(myBool, "error message %s", "formatted")
+func (a *Assertions) Truef(value bool, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Truef(a.t, value, msg, args...)
+}
+
+// WithinDuration asserts that the two times are within duration delta of each other.
+//
+// a.WithinDuration(time.Now(), time.Now(), 10*time.Second)
+func (a *Assertions) WithinDuration(expected time.Time, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return WithinDuration(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+// WithinDurationf asserts that the two times are within duration delta of each other.
+//
+// a.WithinDurationf(time.Now(), time.Now(), 10*time.Second, "error message %s", "formatted")
+func (a *Assertions) WithinDurationf(expected time.Time, actual time.Time, delta time.Duration, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return WithinDurationf(a.t, expected, actual, delta, msg, args...)
+}
+
+// Zero asserts that i is the zero value for its type.
+func (a *Assertions) Zero(i interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Zero(a.t, i, msgAndArgs...)
+}
+
+// Zerof asserts that i is the zero value for its type.
+func (a *Assertions) Zerof(i interface{}, msg string, args ...interface{}) bool {
+ if h, ok := a.t.(tHelper); ok {
+ h.Helper()
+ }
+ return Zerof(a.t, i, msg, args...)
+}
diff --git a/vendor/github.com/stretchr/testify/assert/assertion_forward.go.tmpl b/vendor/github.com/stretchr/testify/assert/assertion_forward.go.tmpl
new file mode 100644
index 0000000..188bb9e
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/assertion_forward.go.tmpl
@@ -0,0 +1,5 @@
+{{.CommentWithoutT "a"}}
+func (a *Assertions) {{.DocInfo.Name}}({{.Params}}) bool {
+ if h, ok := a.t.(tHelper); ok { h.Helper() }
+ return {{.DocInfo.Name}}(a.t, {{.ForwardedParams}})
+}
diff --git a/vendor/github.com/stretchr/testify/assert/assertion_order.go b/vendor/github.com/stretchr/testify/assert/assertion_order.go
new file mode 100644
index 0000000..15a486c
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/assertion_order.go
@@ -0,0 +1,309 @@
+package assert
+
+import (
+ "fmt"
+ "reflect"
+)
+
+func compare(obj1, obj2 interface{}, kind reflect.Kind) (int, bool) {
+ switch kind {
+ case reflect.Int:
+ {
+ intobj1 := obj1.(int)
+ intobj2 := obj2.(int)
+ if intobj1 > intobj2 {
+ return -1, true
+ }
+ if intobj1 == intobj2 {
+ return 0, true
+ }
+ if intobj1 < intobj2 {
+ return 1, true
+ }
+ }
+ case reflect.Int8:
+ {
+ int8obj1 := obj1.(int8)
+ int8obj2 := obj2.(int8)
+ if int8obj1 > int8obj2 {
+ return -1, true
+ }
+ if int8obj1 == int8obj2 {
+ return 0, true
+ }
+ if int8obj1 < int8obj2 {
+ return 1, true
+ }
+ }
+ case reflect.Int16:
+ {
+ int16obj1 := obj1.(int16)
+ int16obj2 := obj2.(int16)
+ if int16obj1 > int16obj2 {
+ return -1, true
+ }
+ if int16obj1 == int16obj2 {
+ return 0, true
+ }
+ if int16obj1 < int16obj2 {
+ return 1, true
+ }
+ }
+ case reflect.Int32:
+ {
+ int32obj1 := obj1.(int32)
+ int32obj2 := obj2.(int32)
+ if int32obj1 > int32obj2 {
+ return -1, true
+ }
+ if int32obj1 == int32obj2 {
+ return 0, true
+ }
+ if int32obj1 < int32obj2 {
+ return 1, true
+ }
+ }
+ case reflect.Int64:
+ {
+ int64obj1 := obj1.(int64)
+ int64obj2 := obj2.(int64)
+ if int64obj1 > int64obj2 {
+ return -1, true
+ }
+ if int64obj1 == int64obj2 {
+ return 0, true
+ }
+ if int64obj1 < int64obj2 {
+ return 1, true
+ }
+ }
+ case reflect.Uint:
+ {
+ uintobj1 := obj1.(uint)
+ uintobj2 := obj2.(uint)
+ if uintobj1 > uintobj2 {
+ return -1, true
+ }
+ if uintobj1 == uintobj2 {
+ return 0, true
+ }
+ if uintobj1 < uintobj2 {
+ return 1, true
+ }
+ }
+ case reflect.Uint8:
+ {
+ uint8obj1 := obj1.(uint8)
+ uint8obj2 := obj2.(uint8)
+ if uint8obj1 > uint8obj2 {
+ return -1, true
+ }
+ if uint8obj1 == uint8obj2 {
+ return 0, true
+ }
+ if uint8obj1 < uint8obj2 {
+ return 1, true
+ }
+ }
+ case reflect.Uint16:
+ {
+ uint16obj1 := obj1.(uint16)
+ uint16obj2 := obj2.(uint16)
+ if uint16obj1 > uint16obj2 {
+ return -1, true
+ }
+ if uint16obj1 == uint16obj2 {
+ return 0, true
+ }
+ if uint16obj1 < uint16obj2 {
+ return 1, true
+ }
+ }
+ case reflect.Uint32:
+ {
+ uint32obj1 := obj1.(uint32)
+ uint32obj2 := obj2.(uint32)
+ if uint32obj1 > uint32obj2 {
+ return -1, true
+ }
+ if uint32obj1 == uint32obj2 {
+ return 0, true
+ }
+ if uint32obj1 < uint32obj2 {
+ return 1, true
+ }
+ }
+ case reflect.Uint64:
+ {
+ uint64obj1 := obj1.(uint64)
+ uint64obj2 := obj2.(uint64)
+ if uint64obj1 > uint64obj2 {
+ return -1, true
+ }
+ if uint64obj1 == uint64obj2 {
+ return 0, true
+ }
+ if uint64obj1 < uint64obj2 {
+ return 1, true
+ }
+ }
+ case reflect.Float32:
+ {
+ float32obj1 := obj1.(float32)
+ float32obj2 := obj2.(float32)
+ if float32obj1 > float32obj2 {
+ return -1, true
+ }
+ if float32obj1 == float32obj2 {
+ return 0, true
+ }
+ if float32obj1 < float32obj2 {
+ return 1, true
+ }
+ }
+ case reflect.Float64:
+ {
+ float64obj1 := obj1.(float64)
+ float64obj2 := obj2.(float64)
+ if float64obj1 > float64obj2 {
+ return -1, true
+ }
+ if float64obj1 == float64obj2 {
+ return 0, true
+ }
+ if float64obj1 < float64obj2 {
+ return 1, true
+ }
+ }
+ case reflect.String:
+ {
+ stringobj1 := obj1.(string)
+ stringobj2 := obj2.(string)
+ if stringobj1 > stringobj2 {
+ return -1, true
+ }
+ if stringobj1 == stringobj2 {
+ return 0, true
+ }
+ if stringobj1 < stringobj2 {
+ return 1, true
+ }
+ }
+ }
+
+ return 0, false
+}
+
+// Greater asserts that the first element is greater than the second
+//
+// assert.Greater(t, 2, 1)
+// assert.Greater(t, float64(2), float64(1))
+// assert.Greater(t, "b", "a")
+func Greater(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ e1Kind := reflect.ValueOf(e1).Kind()
+ e2Kind := reflect.ValueOf(e2).Kind()
+ if e1Kind != e2Kind {
+ return Fail(t, "Elements should be the same type", msgAndArgs...)
+ }
+
+ res, isComparable := compare(e1, e2, e1Kind)
+ if !isComparable {
+ return Fail(t, fmt.Sprintf("Can not compare type \"%s\"", reflect.TypeOf(e1)), msgAndArgs...)
+ }
+
+ if res != -1 {
+ return Fail(t, fmt.Sprintf("\"%v\" is not greater than \"%v\"", e1, e2), msgAndArgs...)
+ }
+
+ return true
+}
+
+// GreaterOrEqual asserts that the first element is greater than or equal to the second
+//
+// assert.GreaterOrEqual(t, 2, 1)
+// assert.GreaterOrEqual(t, 2, 2)
+// assert.GreaterOrEqual(t, "b", "a")
+// assert.GreaterOrEqual(t, "b", "b")
+func GreaterOrEqual(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ e1Kind := reflect.ValueOf(e1).Kind()
+ e2Kind := reflect.ValueOf(e2).Kind()
+ if e1Kind != e2Kind {
+ return Fail(t, "Elements should be the same type", msgAndArgs...)
+ }
+
+ res, isComparable := compare(e1, e2, e1Kind)
+ if !isComparable {
+ return Fail(t, fmt.Sprintf("Can not compare type \"%s\"", reflect.TypeOf(e1)), msgAndArgs...)
+ }
+
+ if res != -1 && res != 0 {
+ return Fail(t, fmt.Sprintf("\"%v\" is not greater than or equal to \"%v\"", e1, e2), msgAndArgs...)
+ }
+
+ return true
+}
+
+// Less asserts that the first element is less than the second
+//
+// assert.Less(t, 1, 2)
+// assert.Less(t, float64(1), float64(2))
+// assert.Less(t, "a", "b")
+func Less(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ e1Kind := reflect.ValueOf(e1).Kind()
+ e2Kind := reflect.ValueOf(e2).Kind()
+ if e1Kind != e2Kind {
+ return Fail(t, "Elements should be the same type", msgAndArgs...)
+ }
+
+ res, isComparable := compare(e1, e2, e1Kind)
+ if !isComparable {
+ return Fail(t, fmt.Sprintf("Can not compare type \"%s\"", reflect.TypeOf(e1)), msgAndArgs...)
+ }
+
+ if res != 1 {
+ return Fail(t, fmt.Sprintf("\"%v\" is not less than \"%v\"", e1, e2), msgAndArgs...)
+ }
+
+ return true
+}
+
+// LessOrEqual asserts that the first element is less than or equal to the second
+//
+// assert.LessOrEqual(t, 1, 2)
+// assert.LessOrEqual(t, 2, 2)
+// assert.LessOrEqual(t, "a", "b")
+// assert.LessOrEqual(t, "b", "b")
+func LessOrEqual(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ e1Kind := reflect.ValueOf(e1).Kind()
+ e2Kind := reflect.ValueOf(e2).Kind()
+ if e1Kind != e2Kind {
+ return Fail(t, "Elements should be the same type", msgAndArgs...)
+ }
+
+ res, isComparable := compare(e1, e2, e1Kind)
+ if !isComparable {
+ return Fail(t, fmt.Sprintf("Can not compare type \"%s\"", reflect.TypeOf(e1)), msgAndArgs...)
+ }
+
+ if res != 1 && res != 0 {
+ return Fail(t, fmt.Sprintf("\"%v\" is not less than or equal to \"%v\"", e1, e2), msgAndArgs...)
+ }
+
+ return true
+}
diff --git a/vendor/github.com/stretchr/testify/assert/assertions.go b/vendor/github.com/stretchr/testify/assert/assertions.go
new file mode 100644
index 0000000..044da8b
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/assertions.go
@@ -0,0 +1,1498 @@
+package assert
+
+import (
+ "bufio"
+ "bytes"
+ "encoding/json"
+ "errors"
+ "fmt"
+ "math"
+ "os"
+ "reflect"
+ "regexp"
+ "runtime"
+ "strings"
+ "time"
+ "unicode"
+ "unicode/utf8"
+
+ "github.com/davecgh/go-spew/spew"
+ "github.com/pmezard/go-difflib/difflib"
+ yaml "gopkg.in/yaml.v2"
+)
+
+//go:generate go run ../_codegen/main.go -output-package=assert -template=assertion_format.go.tmpl
+
+// TestingT is an interface wrapper around *testing.T
+type TestingT interface {
+ Errorf(format string, args ...interface{})
+}
+
+// ComparisonAssertionFunc is a common function prototype when comparing two values. Can be useful
+// for table driven tests.
+type ComparisonAssertionFunc func(TestingT, interface{}, interface{}, ...interface{}) bool
+
+// ValueAssertionFunc is a common function prototype when validating a single value. Can be useful
+// for table driven tests.
+type ValueAssertionFunc func(TestingT, interface{}, ...interface{}) bool
+
+// BoolAssertionFunc is a common function prototype when validating a bool value. Can be useful
+// for table driven tests.
+type BoolAssertionFunc func(TestingT, bool, ...interface{}) bool
+
+// ErrorAssertionFunc is a common function prototype when validating an error value. Can be useful
+// for table driven tests.
+type ErrorAssertionFunc func(TestingT, error, ...interface{}) bool
+
+// Comparison a custom function that returns true on success and false on failure
+type Comparison func() (success bool)
+
+/*
+ Helper functions
+*/
+
+// ObjectsAreEqual determines if two objects are considered equal.
+//
+// This function does no assertion of any kind.
+func ObjectsAreEqual(expected, actual interface{}) bool {
+ if expected == nil || actual == nil {
+ return expected == actual
+ }
+
+ exp, ok := expected.([]byte)
+ if !ok {
+ return reflect.DeepEqual(expected, actual)
+ }
+
+ act, ok := actual.([]byte)
+ if !ok {
+ return false
+ }
+ if exp == nil || act == nil {
+ return exp == nil && act == nil
+ }
+ return bytes.Equal(exp, act)
+}
+
+// ObjectsAreEqualValues gets whether two objects are equal, or if their
+// values are equal.
+func ObjectsAreEqualValues(expected, actual interface{}) bool {
+ if ObjectsAreEqual(expected, actual) {
+ return true
+ }
+
+ actualType := reflect.TypeOf(actual)
+ if actualType == nil {
+ return false
+ }
+ expectedValue := reflect.ValueOf(expected)
+ if expectedValue.IsValid() && expectedValue.Type().ConvertibleTo(actualType) {
+ // Attempt comparison after type conversion
+ return reflect.DeepEqual(expectedValue.Convert(actualType).Interface(), actual)
+ }
+
+ return false
+}
+
+/* CallerInfo is necessary because the assert functions use the testing object
+internally, causing it to print the file:line of the assert method, rather than where
+the problem actually occurred in calling code.*/
+
+// CallerInfo returns an array of strings containing the file and line number
+// of each stack frame leading from the current test to the assert call that
+// failed.
+func CallerInfo() []string {
+
+ pc := uintptr(0)
+ file := ""
+ line := 0
+ ok := false
+ name := ""
+
+ callers := []string{}
+ for i := 0; ; i++ {
+ pc, file, line, ok = runtime.Caller(i)
+ if !ok {
+ // The breaks below failed to terminate the loop, and we ran off the
+ // end of the call stack.
+ break
+ }
+
+ // This is a huge edge case, but it will panic if this is the case, see #180
+ if file == "<autogenerated>" {
+ break
+ }
+
+ f := runtime.FuncForPC(pc)
+ if f == nil {
+ break
+ }
+ name = f.Name()
+
+ // testing.tRunner is the standard library function that calls
+ // tests. Subtests are called directly by tRunner, without going through
+ // the Test/Benchmark/Example function that contains the t.Run calls, so
+ // with subtests we should break when we hit tRunner, without adding it
+ // to the list of callers.
+ if name == "testing.tRunner" {
+ break
+ }
+
+ parts := strings.Split(file, "/")
+ file = parts[len(parts)-1]
+ if len(parts) > 1 {
+ dir := parts[len(parts)-2]
+ if (dir != "assert" && dir != "mock" && dir != "require") || file == "mock_test.go" {
+ callers = append(callers, fmt.Sprintf("%s:%d", file, line))
+ }
+ }
+
+ // Drop the package
+ segments := strings.Split(name, ".")
+ name = segments[len(segments)-1]
+ if isTest(name, "Test") ||
+ isTest(name, "Benchmark") ||
+ isTest(name, "Example") {
+ break
+ }
+ }
+
+ return callers
+}
+
+// Stolen from the `go test` tool.
+// isTest tells whether name looks like a test (or benchmark, according to prefix).
+// It is a Test (say) if there is a character after Test that is not a lower-case letter.
+// We don't want TesticularCancer.
+func isTest(name, prefix string) bool {
+ if !strings.HasPrefix(name, prefix) {
+ return false
+ }
+ if len(name) == len(prefix) { // "Test" is ok
+ return true
+ }
+ rune, _ := utf8.DecodeRuneInString(name[len(prefix):])
+ return !unicode.IsLower(rune)
+}
+
+func messageFromMsgAndArgs(msgAndArgs ...interface{}) string {
+ if len(msgAndArgs) == 0 || msgAndArgs == nil {
+ return ""
+ }
+ if len(msgAndArgs) == 1 {
+ msg := msgAndArgs[0]
+ if msgAsStr, ok := msg.(string); ok {
+ return msgAsStr
+ }
+ return fmt.Sprintf("%+v", msg)
+ }
+ if len(msgAndArgs) > 1 {
+ return fmt.Sprintf(msgAndArgs[0].(string), msgAndArgs[1:]...)
+ }
+ return ""
+}
+
+// Aligns the provided message so that all lines after the first line start at the same location as the first line.
+// Assumes that the first line starts at the correct location (after carriage return, tab, label, spacer and tab).
+// The longestLabelLen parameter specifies the length of the longest label in the output (required becaues this is the
+// basis on which the alignment occurs).
+func indentMessageLines(message string, longestLabelLen int) string {
+ outBuf := new(bytes.Buffer)
+
+ for i, scanner := 0, bufio.NewScanner(strings.NewReader(message)); scanner.Scan(); i++ {
+ // no need to align first line because it starts at the correct location (after the label)
+ if i != 0 {
+ // append alignLen+1 spaces to align with "{{longestLabel}}:" before adding tab
+ outBuf.WriteString("\n\t" + strings.Repeat(" ", longestLabelLen+1) + "\t")
+ }
+ outBuf.WriteString(scanner.Text())
+ }
+
+ return outBuf.String()
+}
+
+type failNower interface {
+ FailNow()
+}
+
+// FailNow fails test
+func FailNow(t TestingT, failureMessage string, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ Fail(t, failureMessage, msgAndArgs...)
+
+ // We cannot extend TestingT with FailNow() and
+ // maintain backwards compatibility, so we fallback
+ // to panicking when FailNow is not available in
+ // TestingT.
+ // See issue #263
+
+ if t, ok := t.(failNower); ok {
+ t.FailNow()
+ } else {
+ panic("test failed and t is missing `FailNow()`")
+ }
+ return false
+}
+
+// Fail reports a failure through
+func Fail(t TestingT, failureMessage string, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ content := []labeledContent{
+ {"Error Trace", strings.Join(CallerInfo(), "\n\t\t\t")},
+ {"Error", failureMessage},
+ }
+
+ // Add test name if the Go version supports it
+ if n, ok := t.(interface {
+ Name() string
+ }); ok {
+ content = append(content, labeledContent{"Test", n.Name()})
+ }
+
+ message := messageFromMsgAndArgs(msgAndArgs...)
+ if len(message) > 0 {
+ content = append(content, labeledContent{"Messages", message})
+ }
+
+ t.Errorf("\n%s", ""+labeledOutput(content...))
+
+ return false
+}
+
+type labeledContent struct {
+ label string
+ content string
+}
+
+// labeledOutput returns a string consisting of the provided labeledContent. Each labeled output is appended in the following manner:
+//
+// \t{{label}}:{{align_spaces}}\t{{content}}\n
+//
+// The initial carriage return is required to undo/erase any padding added by testing.T.Errorf. The "\t{{label}}:" is for the label.
+// If a label is shorter than the longest label provided, padding spaces are added to make all the labels match in length. Once this
+// alignment is achieved, "\t{{content}}\n" is added for the output.
+//
+// If the content of the labeledOutput contains line breaks, the subsequent lines are aligned so that they start at the same location as the first line.
+func labeledOutput(content ...labeledContent) string {
+ longestLabel := 0
+ for _, v := range content {
+ if len(v.label) > longestLabel {
+ longestLabel = len(v.label)
+ }
+ }
+ var output string
+ for _, v := range content {
+ output += "\t" + v.label + ":" + strings.Repeat(" ", longestLabel-len(v.label)) + "\t" + indentMessageLines(v.content, longestLabel) + "\n"
+ }
+ return output
+}
+
+// Implements asserts that an object is implemented by the specified interface.
+//
+// assert.Implements(t, (*MyInterface)(nil), new(MyObject))
+func Implements(t TestingT, interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ interfaceType := reflect.TypeOf(interfaceObject).Elem()
+
+ if object == nil {
+ return Fail(t, fmt.Sprintf("Cannot check if nil implements %v", interfaceType), msgAndArgs...)
+ }
+ if !reflect.TypeOf(object).Implements(interfaceType) {
+ return Fail(t, fmt.Sprintf("%T must implement %v", object, interfaceType), msgAndArgs...)
+ }
+
+ return true
+}
+
+// IsType asserts that the specified objects are of the same type.
+func IsType(t TestingT, expectedType interface{}, object interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ if !ObjectsAreEqual(reflect.TypeOf(object), reflect.TypeOf(expectedType)) {
+ return Fail(t, fmt.Sprintf("Object expected to be of type %v, but was %v", reflect.TypeOf(expectedType), reflect.TypeOf(object)), msgAndArgs...)
+ }
+
+ return true
+}
+
+// Equal asserts that two objects are equal.
+//
+// assert.Equal(t, 123, 123)
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses). Function equality
+// cannot be determined and will always fail.
+func Equal(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ if err := validateEqualArgs(expected, actual); err != nil {
+ return Fail(t, fmt.Sprintf("Invalid operation: %#v == %#v (%s)",
+ expected, actual, err), msgAndArgs...)
+ }
+
+ if !ObjectsAreEqual(expected, actual) {
+ diff := diff(expected, actual)
+ expected, actual = formatUnequalValues(expected, actual)
+ return Fail(t, fmt.Sprintf("Not equal: \n"+
+ "expected: %s\n"+
+ "actual : %s%s", expected, actual, diff), msgAndArgs...)
+ }
+
+ return true
+
+}
+
+// Same asserts that two pointers reference the same object.
+//
+// assert.Same(t, ptr1, ptr2)
+//
+// Both arguments must be pointer variables. Pointer variable sameness is
+// determined based on the equality of both type and value.
+func Same(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ expectedPtr, actualPtr := reflect.ValueOf(expected), reflect.ValueOf(actual)
+ if expectedPtr.Kind() != reflect.Ptr || actualPtr.Kind() != reflect.Ptr {
+ return Fail(t, "Invalid operation: both arguments must be pointers", msgAndArgs...)
+ }
+
+ expectedType, actualType := reflect.TypeOf(expected), reflect.TypeOf(actual)
+ if expectedType != actualType {
+ return Fail(t, fmt.Sprintf("Pointer expected to be of type %v, but was %v",
+ expectedType, actualType), msgAndArgs...)
+ }
+
+ if expected != actual {
+ return Fail(t, fmt.Sprintf("Not same: \n"+
+ "expected: %p %#v\n"+
+ "actual : %p %#v", expected, expected, actual, actual), msgAndArgs...)
+ }
+
+ return true
+}
+
+// formatUnequalValues takes two values of arbitrary types and returns string
+// representations appropriate to be presented to the user.
+//
+// If the values are not of like type, the returned strings will be prefixed
+// with the type name, and the value will be enclosed in parenthesis similar
+// to a type conversion in the Go grammar.
+func formatUnequalValues(expected, actual interface{}) (e string, a string) {
+ if reflect.TypeOf(expected) != reflect.TypeOf(actual) {
+ return fmt.Sprintf("%T(%#v)", expected, expected),
+ fmt.Sprintf("%T(%#v)", actual, actual)
+ }
+
+ return fmt.Sprintf("%#v", expected),
+ fmt.Sprintf("%#v", actual)
+}
+
+// EqualValues asserts that two objects are equal or convertable to the same types
+// and equal.
+//
+// assert.EqualValues(t, uint32(123), int32(123))
+func EqualValues(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ if !ObjectsAreEqualValues(expected, actual) {
+ diff := diff(expected, actual)
+ expected, actual = formatUnequalValues(expected, actual)
+ return Fail(t, fmt.Sprintf("Not equal: \n"+
+ "expected: %s\n"+
+ "actual : %s%s", expected, actual, diff), msgAndArgs...)
+ }
+
+ return true
+
+}
+
+// Exactly asserts that two objects are equal in value and type.
+//
+// assert.Exactly(t, int32(123), int64(123))
+func Exactly(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ aType := reflect.TypeOf(expected)
+ bType := reflect.TypeOf(actual)
+
+ if aType != bType {
+ return Fail(t, fmt.Sprintf("Types expected to match exactly\n\t%v != %v", aType, bType), msgAndArgs...)
+ }
+
+ return Equal(t, expected, actual, msgAndArgs...)
+
+}
+
+// NotNil asserts that the specified object is not nil.
+//
+// assert.NotNil(t, err)
+func NotNil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ if !isNil(object) {
+ return true
+ }
+ return Fail(t, "Expected value not to be nil.", msgAndArgs...)
+}
+
+// containsKind checks if a specified kind in the slice of kinds.
+func containsKind(kinds []reflect.Kind, kind reflect.Kind) bool {
+ for i := 0; i < len(kinds); i++ {
+ if kind == kinds[i] {
+ return true
+ }
+ }
+
+ return false
+}
+
+// isNil checks if a specified object is nil or not, without Failing.
+func isNil(object interface{}) bool {
+ if object == nil {
+ return true
+ }
+
+ value := reflect.ValueOf(object)
+ kind := value.Kind()
+ isNilableKind := containsKind(
+ []reflect.Kind{
+ reflect.Chan, reflect.Func,
+ reflect.Interface, reflect.Map,
+ reflect.Ptr, reflect.Slice},
+ kind)
+
+ if isNilableKind && value.IsNil() {
+ return true
+ }
+
+ return false
+}
+
+// Nil asserts that the specified object is nil.
+//
+// assert.Nil(t, err)
+func Nil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ if isNil(object) {
+ return true
+ }
+ return Fail(t, fmt.Sprintf("Expected nil, but got: %#v", object), msgAndArgs...)
+}
+
+// isEmpty gets whether the specified object is considered empty or not.
+func isEmpty(object interface{}) bool {
+
+ // get nil case out of the way
+ if object == nil {
+ return true
+ }
+
+ objValue := reflect.ValueOf(object)
+
+ switch objValue.Kind() {
+ // collection types are empty when they have no element
+ case reflect.Array, reflect.Chan, reflect.Map, reflect.Slice:
+ return objValue.Len() == 0
+ // pointers are empty if nil or if the value they point to is empty
+ case reflect.Ptr:
+ if objValue.IsNil() {
+ return true
+ }
+ deref := objValue.Elem().Interface()
+ return isEmpty(deref)
+ // for all other types, compare against the zero value
+ default:
+ zero := reflect.Zero(objValue.Type())
+ return reflect.DeepEqual(object, zero.Interface())
+ }
+}
+
+// Empty asserts that the specified object is empty. I.e. nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+// assert.Empty(t, obj)
+func Empty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ pass := isEmpty(object)
+ if !pass {
+ Fail(t, fmt.Sprintf("Should be empty, but was %v", object), msgAndArgs...)
+ }
+
+ return pass
+
+}
+
+// NotEmpty asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+// if assert.NotEmpty(t, obj) {
+// assert.Equal(t, "two", obj[1])
+// }
+func NotEmpty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ pass := !isEmpty(object)
+ if !pass {
+ Fail(t, fmt.Sprintf("Should NOT be empty, but was %v", object), msgAndArgs...)
+ }
+
+ return pass
+
+}
+
+// getLen try to get length of object.
+// return (false, 0) if impossible.
+func getLen(x interface{}) (ok bool, length int) {
+ v := reflect.ValueOf(x)
+ defer func() {
+ if e := recover(); e != nil {
+ ok = false
+ }
+ }()
+ return true, v.Len()
+}
+
+// Len asserts that the specified object has specific length.
+// Len also fails if the object has a type that len() not accept.
+//
+// assert.Len(t, mySlice, 3)
+func Len(t TestingT, object interface{}, length int, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ ok, l := getLen(object)
+ if !ok {
+ return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", object), msgAndArgs...)
+ }
+
+ if l != length {
+ return Fail(t, fmt.Sprintf("\"%s\" should have %d item(s), but has %d", object, length, l), msgAndArgs...)
+ }
+ return true
+}
+
+// True asserts that the specified value is true.
+//
+// assert.True(t, myBool)
+func True(t TestingT, value bool, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ if h, ok := t.(interface {
+ Helper()
+ }); ok {
+ h.Helper()
+ }
+
+ if value != true {
+ return Fail(t, "Should be true", msgAndArgs...)
+ }
+
+ return true
+
+}
+
+// False asserts that the specified value is false.
+//
+// assert.False(t, myBool)
+func False(t TestingT, value bool, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ if value != false {
+ return Fail(t, "Should be false", msgAndArgs...)
+ }
+
+ return true
+
+}
+
+// NotEqual asserts that the specified values are NOT equal.
+//
+// assert.NotEqual(t, obj1, obj2)
+//
+// Pointer variable equality is determined based on the equality of the
+// referenced values (as opposed to the memory addresses).
+func NotEqual(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ if err := validateEqualArgs(expected, actual); err != nil {
+ return Fail(t, fmt.Sprintf("Invalid operation: %#v != %#v (%s)",
+ expected, actual, err), msgAndArgs...)
+ }
+
+ if ObjectsAreEqual(expected, actual) {
+ return Fail(t, fmt.Sprintf("Should not be: %#v\n", actual), msgAndArgs...)
+ }
+
+ return true
+
+}
+
+// containsElement try loop over the list check if the list includes the element.
+// return (false, false) if impossible.
+// return (true, false) if element was not found.
+// return (true, true) if element was found.
+func includeElement(list interface{}, element interface{}) (ok, found bool) {
+
+ listValue := reflect.ValueOf(list)
+ listKind := reflect.TypeOf(list).Kind()
+ defer func() {
+ if e := recover(); e != nil {
+ ok = false
+ found = false
+ }
+ }()
+
+ if listKind == reflect.String {
+ elementValue := reflect.ValueOf(element)
+ return true, strings.Contains(listValue.String(), elementValue.String())
+ }
+
+ if listKind == reflect.Map {
+ mapKeys := listValue.MapKeys()
+ for i := 0; i < len(mapKeys); i++ {
+ if ObjectsAreEqual(mapKeys[i].Interface(), element) {
+ return true, true
+ }
+ }
+ return true, false
+ }
+
+ for i := 0; i < listValue.Len(); i++ {
+ if ObjectsAreEqual(listValue.Index(i).Interface(), element) {
+ return true, true
+ }
+ }
+ return true, false
+
+}
+
+// Contains asserts that the specified string, list(array, slice...) or map contains the
+// specified substring or element.
+//
+// assert.Contains(t, "Hello World", "World")
+// assert.Contains(t, ["Hello", "World"], "World")
+// assert.Contains(t, {"Hello": "World"}, "Hello")
+func Contains(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ ok, found := includeElement(s, contains)
+ if !ok {
+ return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", s), msgAndArgs...)
+ }
+ if !found {
+ return Fail(t, fmt.Sprintf("\"%s\" does not contain \"%s\"", s, contains), msgAndArgs...)
+ }
+
+ return true
+
+}
+
+// NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the
+// specified substring or element.
+//
+// assert.NotContains(t, "Hello World", "Earth")
+// assert.NotContains(t, ["Hello", "World"], "Earth")
+// assert.NotContains(t, {"Hello": "World"}, "Earth")
+func NotContains(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ ok, found := includeElement(s, contains)
+ if !ok {
+ return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", s), msgAndArgs...)
+ }
+ if found {
+ return Fail(t, fmt.Sprintf("\"%s\" should not contain \"%s\"", s, contains), msgAndArgs...)
+ }
+
+ return true
+
+}
+
+// Subset asserts that the specified list(array, slice...) contains all
+// elements given in the specified subset(array, slice...).
+//
+// assert.Subset(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]")
+func Subset(t TestingT, list, subset interface{}, msgAndArgs ...interface{}) (ok bool) {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ if subset == nil {
+ return true // we consider nil to be equal to the nil set
+ }
+
+ subsetValue := reflect.ValueOf(subset)
+ defer func() {
+ if e := recover(); e != nil {
+ ok = false
+ }
+ }()
+
+ listKind := reflect.TypeOf(list).Kind()
+ subsetKind := reflect.TypeOf(subset).Kind()
+
+ if listKind != reflect.Array && listKind != reflect.Slice {
+ return Fail(t, fmt.Sprintf("%q has an unsupported type %s", list, listKind), msgAndArgs...)
+ }
+
+ if subsetKind != reflect.Array && subsetKind != reflect.Slice {
+ return Fail(t, fmt.Sprintf("%q has an unsupported type %s", subset, subsetKind), msgAndArgs...)
+ }
+
+ for i := 0; i < subsetValue.Len(); i++ {
+ element := subsetValue.Index(i).Interface()
+ ok, found := includeElement(list, element)
+ if !ok {
+ return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", list), msgAndArgs...)
+ }
+ if !found {
+ return Fail(t, fmt.Sprintf("\"%s\" does not contain \"%s\"", list, element), msgAndArgs...)
+ }
+ }
+
+ return true
+}
+
+// NotSubset asserts that the specified list(array, slice...) contains not all
+// elements given in the specified subset(array, slice...).
+//
+// assert.NotSubset(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]")
+func NotSubset(t TestingT, list, subset interface{}, msgAndArgs ...interface{}) (ok bool) {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ if subset == nil {
+ return Fail(t, fmt.Sprintf("nil is the empty set which is a subset of every set"), msgAndArgs...)
+ }
+
+ subsetValue := reflect.ValueOf(subset)
+ defer func() {
+ if e := recover(); e != nil {
+ ok = false
+ }
+ }()
+
+ listKind := reflect.TypeOf(list).Kind()
+ subsetKind := reflect.TypeOf(subset).Kind()
+
+ if listKind != reflect.Array && listKind != reflect.Slice {
+ return Fail(t, fmt.Sprintf("%q has an unsupported type %s", list, listKind), msgAndArgs...)
+ }
+
+ if subsetKind != reflect.Array && subsetKind != reflect.Slice {
+ return Fail(t, fmt.Sprintf("%q has an unsupported type %s", subset, subsetKind), msgAndArgs...)
+ }
+
+ for i := 0; i < subsetValue.Len(); i++ {
+ element := subsetValue.Index(i).Interface()
+ ok, found := includeElement(list, element)
+ if !ok {
+ return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", list), msgAndArgs...)
+ }
+ if !found {
+ return true
+ }
+ }
+
+ return Fail(t, fmt.Sprintf("%q is a subset of %q", subset, list), msgAndArgs...)
+}
+
+// ElementsMatch asserts that the specified listA(array, slice...) is equal to specified
+// listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
+// the number of appearances of each of them in both lists should match.
+//
+// assert.ElementsMatch(t, [1, 3, 2, 3], [1, 3, 3, 2])
+func ElementsMatch(t TestingT, listA, listB interface{}, msgAndArgs ...interface{}) (ok bool) {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ if isEmpty(listA) && isEmpty(listB) {
+ return true
+ }
+
+ aKind := reflect.TypeOf(listA).Kind()
+ bKind := reflect.TypeOf(listB).Kind()
+
+ if aKind != reflect.Array && aKind != reflect.Slice {
+ return Fail(t, fmt.Sprintf("%q has an unsupported type %s", listA, aKind), msgAndArgs...)
+ }
+
+ if bKind != reflect.Array && bKind != reflect.Slice {
+ return Fail(t, fmt.Sprintf("%q has an unsupported type %s", listB, bKind), msgAndArgs...)
+ }
+
+ aValue := reflect.ValueOf(listA)
+ bValue := reflect.ValueOf(listB)
+
+ aLen := aValue.Len()
+ bLen := bValue.Len()
+
+ if aLen != bLen {
+ return Fail(t, fmt.Sprintf("lengths don't match: %d != %d", aLen, bLen), msgAndArgs...)
+ }
+
+ // Mark indexes in bValue that we already used
+ visited := make([]bool, bLen)
+ for i := 0; i < aLen; i++ {
+ element := aValue.Index(i).Interface()
+ found := false
+ for j := 0; j < bLen; j++ {
+ if visited[j] {
+ continue
+ }
+ if ObjectsAreEqual(bValue.Index(j).Interface(), element) {
+ visited[j] = true
+ found = true
+ break
+ }
+ }
+ if !found {
+ return Fail(t, fmt.Sprintf("element %s appears more times in %s than in %s", element, aValue, bValue), msgAndArgs...)
+ }
+ }
+
+ return true
+}
+
+// Condition uses a Comparison to assert a complex condition.
+func Condition(t TestingT, comp Comparison, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ result := comp()
+ if !result {
+ Fail(t, "Condition failed!", msgAndArgs...)
+ }
+ return result
+}
+
+// PanicTestFunc defines a func that should be passed to the assert.Panics and assert.NotPanics
+// methods, and represents a simple func that takes no arguments, and returns nothing.
+type PanicTestFunc func()
+
+// didPanic returns true if the function passed to it panics. Otherwise, it returns false.
+func didPanic(f PanicTestFunc) (bool, interface{}) {
+
+ didPanic := false
+ var message interface{}
+ func() {
+
+ defer func() {
+ if message = recover(); message != nil {
+ didPanic = true
+ }
+ }()
+
+ // call the target function
+ f()
+
+ }()
+
+ return didPanic, message
+
+}
+
+// Panics asserts that the code inside the specified PanicTestFunc panics.
+//
+// assert.Panics(t, func(){ GoCrazy() })
+func Panics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ if funcDidPanic, panicValue := didPanic(f); !funcDidPanic {
+ return Fail(t, fmt.Sprintf("func %#v should panic\n\tPanic value:\t%#v", f, panicValue), msgAndArgs...)
+ }
+
+ return true
+}
+
+// PanicsWithValue asserts that the code inside the specified PanicTestFunc panics, and that
+// the recovered panic value equals the expected panic value.
+//
+// assert.PanicsWithValue(t, "crazy error", func(){ GoCrazy() })
+func PanicsWithValue(t TestingT, expected interface{}, f PanicTestFunc, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ funcDidPanic, panicValue := didPanic(f)
+ if !funcDidPanic {
+ return Fail(t, fmt.Sprintf("func %#v should panic\n\tPanic value:\t%#v", f, panicValue), msgAndArgs...)
+ }
+ if panicValue != expected {
+ return Fail(t, fmt.Sprintf("func %#v should panic with value:\t%#v\n\tPanic value:\t%#v", f, expected, panicValue), msgAndArgs...)
+ }
+
+ return true
+}
+
+// NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic.
+//
+// assert.NotPanics(t, func(){ RemainCalm() })
+func NotPanics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ if funcDidPanic, panicValue := didPanic(f); funcDidPanic {
+ return Fail(t, fmt.Sprintf("func %#v should not panic\n\tPanic value:\t%v", f, panicValue), msgAndArgs...)
+ }
+
+ return true
+}
+
+// WithinDuration asserts that the two times are within duration delta of each other.
+//
+// assert.WithinDuration(t, time.Now(), time.Now(), 10*time.Second)
+func WithinDuration(t TestingT, expected, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ dt := expected.Sub(actual)
+ if dt < -delta || dt > delta {
+ return Fail(t, fmt.Sprintf("Max difference between %v and %v allowed is %v, but difference was %v", expected, actual, delta, dt), msgAndArgs...)
+ }
+
+ return true
+}
+
+func toFloat(x interface{}) (float64, bool) {
+ var xf float64
+ xok := true
+
+ switch xn := x.(type) {
+ case uint8:
+ xf = float64(xn)
+ case uint16:
+ xf = float64(xn)
+ case uint32:
+ xf = float64(xn)
+ case uint64:
+ xf = float64(xn)
+ case int:
+ xf = float64(xn)
+ case int8:
+ xf = float64(xn)
+ case int16:
+ xf = float64(xn)
+ case int32:
+ xf = float64(xn)
+ case int64:
+ xf = float64(xn)
+ case float32:
+ xf = float64(xn)
+ case float64:
+ xf = float64(xn)
+ case time.Duration:
+ xf = float64(xn)
+ default:
+ xok = false
+ }
+
+ return xf, xok
+}
+
+// InDelta asserts that the two numerals are within delta of each other.
+//
+// assert.InDelta(t, math.Pi, (22 / 7.0), 0.01)
+func InDelta(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ af, aok := toFloat(expected)
+ bf, bok := toFloat(actual)
+
+ if !aok || !bok {
+ return Fail(t, fmt.Sprintf("Parameters must be numerical"), msgAndArgs...)
+ }
+
+ if math.IsNaN(af) {
+ return Fail(t, fmt.Sprintf("Expected must not be NaN"), msgAndArgs...)
+ }
+
+ if math.IsNaN(bf) {
+ return Fail(t, fmt.Sprintf("Expected %v with delta %v, but was NaN", expected, delta), msgAndArgs...)
+ }
+
+ dt := af - bf
+ if dt < -delta || dt > delta {
+ return Fail(t, fmt.Sprintf("Max difference between %v and %v allowed is %v, but difference was %v", expected, actual, delta, dt), msgAndArgs...)
+ }
+
+ return true
+}
+
+// InDeltaSlice is the same as InDelta, except it compares two slices.
+func InDeltaSlice(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ if expected == nil || actual == nil ||
+ reflect.TypeOf(actual).Kind() != reflect.Slice ||
+ reflect.TypeOf(expected).Kind() != reflect.Slice {
+ return Fail(t, fmt.Sprintf("Parameters must be slice"), msgAndArgs...)
+ }
+
+ actualSlice := reflect.ValueOf(actual)
+ expectedSlice := reflect.ValueOf(expected)
+
+ for i := 0; i < actualSlice.Len(); i++ {
+ result := InDelta(t, actualSlice.Index(i).Interface(), expectedSlice.Index(i).Interface(), delta, msgAndArgs...)
+ if !result {
+ return result
+ }
+ }
+
+ return true
+}
+
+// InDeltaMapValues is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
+func InDeltaMapValues(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ if expected == nil || actual == nil ||
+ reflect.TypeOf(actual).Kind() != reflect.Map ||
+ reflect.TypeOf(expected).Kind() != reflect.Map {
+ return Fail(t, "Arguments must be maps", msgAndArgs...)
+ }
+
+ expectedMap := reflect.ValueOf(expected)
+ actualMap := reflect.ValueOf(actual)
+
+ if expectedMap.Len() != actualMap.Len() {
+ return Fail(t, "Arguments must have the same number of keys", msgAndArgs...)
+ }
+
+ for _, k := range expectedMap.MapKeys() {
+ ev := expectedMap.MapIndex(k)
+ av := actualMap.MapIndex(k)
+
+ if !ev.IsValid() {
+ return Fail(t, fmt.Sprintf("missing key %q in expected map", k), msgAndArgs...)
+ }
+
+ if !av.IsValid() {
+ return Fail(t, fmt.Sprintf("missing key %q in actual map", k), msgAndArgs...)
+ }
+
+ if !InDelta(
+ t,
+ ev.Interface(),
+ av.Interface(),
+ delta,
+ msgAndArgs...,
+ ) {
+ return false
+ }
+ }
+
+ return true
+}
+
+func calcRelativeError(expected, actual interface{}) (float64, error) {
+ af, aok := toFloat(expected)
+ if !aok {
+ return 0, fmt.Errorf("expected value %q cannot be converted to float", expected)
+ }
+ if af == 0 {
+ return 0, fmt.Errorf("expected value must have a value other than zero to calculate the relative error")
+ }
+ bf, bok := toFloat(actual)
+ if !bok {
+ return 0, fmt.Errorf("actual value %q cannot be converted to float", actual)
+ }
+
+ return math.Abs(af-bf) / math.Abs(af), nil
+}
+
+// InEpsilon asserts that expected and actual have a relative error less than epsilon
+func InEpsilon(t TestingT, expected, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ actualEpsilon, err := calcRelativeError(expected, actual)
+ if err != nil {
+ return Fail(t, err.Error(), msgAndArgs...)
+ }
+ if actualEpsilon > epsilon {
+ return Fail(t, fmt.Sprintf("Relative error is too high: %#v (expected)\n"+
+ " < %#v (actual)", epsilon, actualEpsilon), msgAndArgs...)
+ }
+
+ return true
+}
+
+// InEpsilonSlice is the same as InEpsilon, except it compares each value from two slices.
+func InEpsilonSlice(t TestingT, expected, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ if expected == nil || actual == nil ||
+ reflect.TypeOf(actual).Kind() != reflect.Slice ||
+ reflect.TypeOf(expected).Kind() != reflect.Slice {
+ return Fail(t, fmt.Sprintf("Parameters must be slice"), msgAndArgs...)
+ }
+
+ actualSlice := reflect.ValueOf(actual)
+ expectedSlice := reflect.ValueOf(expected)
+
+ for i := 0; i < actualSlice.Len(); i++ {
+ result := InEpsilon(t, actualSlice.Index(i).Interface(), expectedSlice.Index(i).Interface(), epsilon)
+ if !result {
+ return result
+ }
+ }
+
+ return true
+}
+
+/*
+ Errors
+*/
+
+// NoError asserts that a function returned no error (i.e. `nil`).
+//
+// actualObj, err := SomeFunction()
+// if assert.NoError(t, err) {
+// assert.Equal(t, expectedObj, actualObj)
+// }
+func NoError(t TestingT, err error, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ if err != nil {
+ return Fail(t, fmt.Sprintf("Received unexpected error:\n%+v", err), msgAndArgs...)
+ }
+
+ return true
+}
+
+// Error asserts that a function returned an error (i.e. not `nil`).
+//
+// actualObj, err := SomeFunction()
+// if assert.Error(t, err) {
+// assert.Equal(t, expectedError, err)
+// }
+func Error(t TestingT, err error, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ if err == nil {
+ return Fail(t, "An error is expected but got nil.", msgAndArgs...)
+ }
+
+ return true
+}
+
+// EqualError asserts that a function returned an error (i.e. not `nil`)
+// and that it is equal to the provided error.
+//
+// actualObj, err := SomeFunction()
+// assert.EqualError(t, err, expectedErrorString)
+func EqualError(t TestingT, theError error, errString string, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ if !Error(t, theError, msgAndArgs...) {
+ return false
+ }
+ expected := errString
+ actual := theError.Error()
+ // don't need to use deep equals here, we know they are both strings
+ if expected != actual {
+ return Fail(t, fmt.Sprintf("Error message not equal:\n"+
+ "expected: %q\n"+
+ "actual : %q", expected, actual), msgAndArgs...)
+ }
+ return true
+}
+
+// matchRegexp return true if a specified regexp matches a string.
+func matchRegexp(rx interface{}, str interface{}) bool {
+
+ var r *regexp.Regexp
+ if rr, ok := rx.(*regexp.Regexp); ok {
+ r = rr
+ } else {
+ r = regexp.MustCompile(fmt.Sprint(rx))
+ }
+
+ return (r.FindStringIndex(fmt.Sprint(str)) != nil)
+
+}
+
+// Regexp asserts that a specified regexp matches a string.
+//
+// assert.Regexp(t, regexp.MustCompile("start"), "it's starting")
+// assert.Regexp(t, "start...$", "it's not starting")
+func Regexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ match := matchRegexp(rx, str)
+
+ if !match {
+ Fail(t, fmt.Sprintf("Expect \"%v\" to match \"%v\"", str, rx), msgAndArgs...)
+ }
+
+ return match
+}
+
+// NotRegexp asserts that a specified regexp does not match a string.
+//
+// assert.NotRegexp(t, regexp.MustCompile("starts"), "it's starting")
+// assert.NotRegexp(t, "^start", "it's not starting")
+func NotRegexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ match := matchRegexp(rx, str)
+
+ if match {
+ Fail(t, fmt.Sprintf("Expect \"%v\" to NOT match \"%v\"", str, rx), msgAndArgs...)
+ }
+
+ return !match
+
+}
+
+// Zero asserts that i is the zero value for its type.
+func Zero(t TestingT, i interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ if i != nil && !reflect.DeepEqual(i, reflect.Zero(reflect.TypeOf(i)).Interface()) {
+ return Fail(t, fmt.Sprintf("Should be zero, but was %v", i), msgAndArgs...)
+ }
+ return true
+}
+
+// NotZero asserts that i is not the zero value for its type.
+func NotZero(t TestingT, i interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ if i == nil || reflect.DeepEqual(i, reflect.Zero(reflect.TypeOf(i)).Interface()) {
+ return Fail(t, fmt.Sprintf("Should not be zero, but was %v", i), msgAndArgs...)
+ }
+ return true
+}
+
+// FileExists checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.
+func FileExists(t TestingT, path string, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ info, err := os.Lstat(path)
+ if err != nil {
+ if os.IsNotExist(err) {
+ return Fail(t, fmt.Sprintf("unable to find file %q", path), msgAndArgs...)
+ }
+ return Fail(t, fmt.Sprintf("error when running os.Lstat(%q): %s", path, err), msgAndArgs...)
+ }
+ if info.IsDir() {
+ return Fail(t, fmt.Sprintf("%q is a directory", path), msgAndArgs...)
+ }
+ return true
+}
+
+// DirExists checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.
+func DirExists(t TestingT, path string, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ info, err := os.Lstat(path)
+ if err != nil {
+ if os.IsNotExist(err) {
+ return Fail(t, fmt.Sprintf("unable to find file %q", path), msgAndArgs...)
+ }
+ return Fail(t, fmt.Sprintf("error when running os.Lstat(%q): %s", path, err), msgAndArgs...)
+ }
+ if !info.IsDir() {
+ return Fail(t, fmt.Sprintf("%q is a file", path), msgAndArgs...)
+ }
+ return true
+}
+
+// JSONEq asserts that two JSON strings are equivalent.
+//
+// assert.JSONEq(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
+func JSONEq(t TestingT, expected string, actual string, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ var expectedJSONAsInterface, actualJSONAsInterface interface{}
+
+ if err := json.Unmarshal([]byte(expected), &expectedJSONAsInterface); err != nil {
+ return Fail(t, fmt.Sprintf("Expected value ('%s') is not valid json.\nJSON parsing error: '%s'", expected, err.Error()), msgAndArgs...)
+ }
+
+ if err := json.Unmarshal([]byte(actual), &actualJSONAsInterface); err != nil {
+ return Fail(t, fmt.Sprintf("Input ('%s') needs to be valid json.\nJSON parsing error: '%s'", actual, err.Error()), msgAndArgs...)
+ }
+
+ return Equal(t, expectedJSONAsInterface, actualJSONAsInterface, msgAndArgs...)
+}
+
+// YAMLEq asserts that two YAML strings are equivalent.
+func YAMLEq(t TestingT, expected string, actual string, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ var expectedYAMLAsInterface, actualYAMLAsInterface interface{}
+
+ if err := yaml.Unmarshal([]byte(expected), &expectedYAMLAsInterface); err != nil {
+ return Fail(t, fmt.Sprintf("Expected value ('%s') is not valid yaml.\nYAML parsing error: '%s'", expected, err.Error()), msgAndArgs...)
+ }
+
+ if err := yaml.Unmarshal([]byte(actual), &actualYAMLAsInterface); err != nil {
+ return Fail(t, fmt.Sprintf("Input ('%s') needs to be valid yaml.\nYAML error: '%s'", actual, err.Error()), msgAndArgs...)
+ }
+
+ return Equal(t, expectedYAMLAsInterface, actualYAMLAsInterface, msgAndArgs...)
+}
+
+func typeAndKind(v interface{}) (reflect.Type, reflect.Kind) {
+ t := reflect.TypeOf(v)
+ k := t.Kind()
+
+ if k == reflect.Ptr {
+ t = t.Elem()
+ k = t.Kind()
+ }
+ return t, k
+}
+
+// diff returns a diff of both values as long as both are of the same type and
+// are a struct, map, slice, array or string. Otherwise it returns an empty string.
+func diff(expected interface{}, actual interface{}) string {
+ if expected == nil || actual == nil {
+ return ""
+ }
+
+ et, ek := typeAndKind(expected)
+ at, _ := typeAndKind(actual)
+
+ if et != at {
+ return ""
+ }
+
+ if ek != reflect.Struct && ek != reflect.Map && ek != reflect.Slice && ek != reflect.Array && ek != reflect.String {
+ return ""
+ }
+
+ var e, a string
+ if et != reflect.TypeOf("") {
+ e = spewConfig.Sdump(expected)
+ a = spewConfig.Sdump(actual)
+ } else {
+ e = reflect.ValueOf(expected).String()
+ a = reflect.ValueOf(actual).String()
+ }
+
+ diff, _ := difflib.GetUnifiedDiffString(difflib.UnifiedDiff{
+ A: difflib.SplitLines(e),
+ B: difflib.SplitLines(a),
+ FromFile: "Expected",
+ FromDate: "",
+ ToFile: "Actual",
+ ToDate: "",
+ Context: 1,
+ })
+
+ return "\n\nDiff:\n" + diff
+}
+
+// validateEqualArgs checks whether provided arguments can be safely used in the
+// Equal/NotEqual functions.
+func validateEqualArgs(expected, actual interface{}) error {
+ if isFunction(expected) || isFunction(actual) {
+ return errors.New("cannot take func type as argument")
+ }
+ return nil
+}
+
+func isFunction(arg interface{}) bool {
+ if arg == nil {
+ return false
+ }
+ return reflect.TypeOf(arg).Kind() == reflect.Func
+}
+
+var spewConfig = spew.ConfigState{
+ Indent: " ",
+ DisablePointerAddresses: true,
+ DisableCapacities: true,
+ SortKeys: true,
+}
+
+type tHelper interface {
+ Helper()
+}
+
+// Eventually asserts that given condition will be met in waitFor time,
+// periodically checking target function each tick.
+//
+// assert.Eventually(t, func() bool { return true; }, time.Second, 10*time.Millisecond)
+func Eventually(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+
+ timer := time.NewTimer(waitFor)
+ ticker := time.NewTicker(tick)
+ checkPassed := make(chan bool)
+ defer timer.Stop()
+ defer ticker.Stop()
+ defer close(checkPassed)
+ for {
+ select {
+ case <-timer.C:
+ return Fail(t, "Condition never satisfied", msgAndArgs...)
+ case result := <-checkPassed:
+ if result {
+ return true
+ }
+ case <-ticker.C:
+ go func() {
+ checkPassed <- condition()
+ }()
+ }
+ }
+}
diff --git a/vendor/github.com/stretchr/testify/assert/doc.go b/vendor/github.com/stretchr/testify/assert/doc.go
new file mode 100644
index 0000000..c9dccc4
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/doc.go
@@ -0,0 +1,45 @@
+// Package assert provides a set of comprehensive testing tools for use with the normal Go testing system.
+//
+// Example Usage
+//
+// The following is a complete example using assert in a standard test function:
+// import (
+// "testing"
+// "github.com/stretchr/testify/assert"
+// )
+//
+// func TestSomething(t *testing.T) {
+//
+// var a string = "Hello"
+// var b string = "Hello"
+//
+// assert.Equal(t, a, b, "The two words should be the same.")
+//
+// }
+//
+// if you assert many times, use the format below:
+//
+// import (
+// "testing"
+// "github.com/stretchr/testify/assert"
+// )
+//
+// func TestSomething(t *testing.T) {
+// assert := assert.New(t)
+//
+// var a string = "Hello"
+// var b string = "Hello"
+//
+// assert.Equal(a, b, "The two words should be the same.")
+// }
+//
+// Assertions
+//
+// Assertions allow you to easily write test code, and are global funcs in the `assert` package.
+// All assertion functions take, as the first argument, the `*testing.T` object provided by the
+// testing framework. This allows the assertion funcs to write the failings and other details to
+// the correct place.
+//
+// Every assertion function also takes an optional string message as the final argument,
+// allowing custom error messages to be appended to the message the assertion method outputs.
+package assert
diff --git a/vendor/github.com/stretchr/testify/assert/errors.go b/vendor/github.com/stretchr/testify/assert/errors.go
new file mode 100644
index 0000000..ac9dc9d
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/errors.go
@@ -0,0 +1,10 @@
+package assert
+
+import (
+ "errors"
+)
+
+// AnError is an error instance useful for testing. If the code does not care
+// about error specifics, and only needs to return the error for example, this
+// error should be used to make the test code more readable.
+var AnError = errors.New("assert.AnError general error for testing")
diff --git a/vendor/github.com/stretchr/testify/assert/forward_assertions.go b/vendor/github.com/stretchr/testify/assert/forward_assertions.go
new file mode 100644
index 0000000..9ad5685
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/forward_assertions.go
@@ -0,0 +1,16 @@
+package assert
+
+// Assertions provides assertion methods around the
+// TestingT interface.
+type Assertions struct {
+ t TestingT
+}
+
+// New makes a new Assertions object for the specified TestingT.
+func New(t TestingT) *Assertions {
+ return &Assertions{
+ t: t,
+ }
+}
+
+//go:generate go run ../_codegen/main.go -output-package=assert -template=assertion_forward.go.tmpl -include-format-funcs
diff --git a/vendor/github.com/stretchr/testify/assert/http_assertions.go b/vendor/github.com/stretchr/testify/assert/http_assertions.go
new file mode 100644
index 0000000..df46fa7
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/http_assertions.go
@@ -0,0 +1,143 @@
+package assert
+
+import (
+ "fmt"
+ "net/http"
+ "net/http/httptest"
+ "net/url"
+ "strings"
+)
+
+// httpCode is a helper that returns HTTP code of the response. It returns -1 and
+// an error if building a new request fails.
+func httpCode(handler http.HandlerFunc, method, url string, values url.Values) (int, error) {
+ w := httptest.NewRecorder()
+ req, err := http.NewRequest(method, url, nil)
+ if err != nil {
+ return -1, err
+ }
+ req.URL.RawQuery = values.Encode()
+ handler(w, req)
+ return w.Code, nil
+}
+
+// HTTPSuccess asserts that a specified handler returns a success status code.
+//
+// assert.HTTPSuccess(t, myHandler, "POST", "http://www.google.com", nil)
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPSuccess(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ code, err := httpCode(handler, method, url, values)
+ if err != nil {
+ Fail(t, fmt.Sprintf("Failed to build test request, got error: %s", err))
+ return false
+ }
+
+ isSuccessCode := code >= http.StatusOK && code <= http.StatusPartialContent
+ if !isSuccessCode {
+ Fail(t, fmt.Sprintf("Expected HTTP success status code for %q but received %d", url+"?"+values.Encode(), code))
+ }
+
+ return isSuccessCode
+}
+
+// HTTPRedirect asserts that a specified handler returns a redirect status code.
+//
+// assert.HTTPRedirect(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPRedirect(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ code, err := httpCode(handler, method, url, values)
+ if err != nil {
+ Fail(t, fmt.Sprintf("Failed to build test request, got error: %s", err))
+ return false
+ }
+
+ isRedirectCode := code >= http.StatusMultipleChoices && code <= http.StatusTemporaryRedirect
+ if !isRedirectCode {
+ Fail(t, fmt.Sprintf("Expected HTTP redirect status code for %q but received %d", url+"?"+values.Encode(), code))
+ }
+
+ return isRedirectCode
+}
+
+// HTTPError asserts that a specified handler returns an error status code.
+//
+// assert.HTTPError(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPError(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ code, err := httpCode(handler, method, url, values)
+ if err != nil {
+ Fail(t, fmt.Sprintf("Failed to build test request, got error: %s", err))
+ return false
+ }
+
+ isErrorCode := code >= http.StatusBadRequest
+ if !isErrorCode {
+ Fail(t, fmt.Sprintf("Expected HTTP error status code for %q but received %d", url+"?"+values.Encode(), code))
+ }
+
+ return isErrorCode
+}
+
+// HTTPBody is a helper that returns HTTP body of the response. It returns
+// empty string if building a new request fails.
+func HTTPBody(handler http.HandlerFunc, method, url string, values url.Values) string {
+ w := httptest.NewRecorder()
+ req, err := http.NewRequest(method, url+"?"+values.Encode(), nil)
+ if err != nil {
+ return ""
+ }
+ handler(w, req)
+ return w.Body.String()
+}
+
+// HTTPBodyContains asserts that a specified handler returns a
+// body that contains a string.
+//
+// assert.HTTPBodyContains(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPBodyContains(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ body := HTTPBody(handler, method, url, values)
+
+ contains := strings.Contains(body, fmt.Sprint(str))
+ if !contains {
+ Fail(t, fmt.Sprintf("Expected response body for \"%s\" to contain \"%s\" but found \"%s\"", url+"?"+values.Encode(), str, body))
+ }
+
+ return contains
+}
+
+// HTTPBodyNotContains asserts that a specified handler returns a
+// body that does not contain a string.
+//
+// assert.HTTPBodyNotContains(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPBodyNotContains(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool {
+ if h, ok := t.(tHelper); ok {
+ h.Helper()
+ }
+ body := HTTPBody(handler, method, url, values)
+
+ contains := strings.Contains(body, fmt.Sprint(str))
+ if contains {
+ Fail(t, fmt.Sprintf("Expected response body for \"%s\" to NOT contain \"%s\" but found \"%s\"", url+"?"+values.Encode(), str, body))
+ }
+
+ return !contains
+}
diff --git a/vendor/gopkg.in/yaml.v2/.travis.yml b/vendor/gopkg.in/yaml.v2/.travis.yml
new file mode 100644
index 0000000..9f55693
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/.travis.yml
@@ -0,0 +1,12 @@
+language: go
+
+go:
+ - 1.4
+ - 1.5
+ - 1.6
+ - 1.7
+ - 1.8
+ - 1.9
+ - tip
+
+go_import_path: gopkg.in/yaml.v2
diff --git a/vendor/gopkg.in/yaml.v2/LICENSE b/vendor/gopkg.in/yaml.v2/LICENSE
new file mode 100644
index 0000000..8dada3e
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/LICENSE
@@ -0,0 +1,201 @@
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
+ control with that entity. For the purposes of this definition,
+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
+
+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
+ source, and configuration files.
+
+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
+ APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
+ boilerplate notice, with the fields enclosed by brackets "{}"
+ replaced with your own identifying information. (Don't include
+ the brackets!) The text should be enclosed in the appropriate
+ comment syntax for the file format. We also recommend that a
+ file or class name and description of purpose be included on the
+ same "printed page" as the copyright notice for easier
+ identification within third-party archives.
+
+ Copyright {yyyy} {name of copyright owner}
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
diff --git a/vendor/gopkg.in/yaml.v2/LICENSE.libyaml b/vendor/gopkg.in/yaml.v2/LICENSE.libyaml
new file mode 100644
index 0000000..8da58fb
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/LICENSE.libyaml
@@ -0,0 +1,31 @@
+The following files were ported to Go from C files of libyaml, and thus
+are still covered by their original copyright and license:
+
+ apic.go
+ emitterc.go
+ parserc.go
+ readerc.go
+ scannerc.go
+ writerc.go
+ yamlh.go
+ yamlprivateh.go
+
+Copyright (c) 2006 Kirill Simonov
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/vendor/gopkg.in/yaml.v2/NOTICE b/vendor/gopkg.in/yaml.v2/NOTICE
new file mode 100644
index 0000000..866d74a
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/NOTICE
@@ -0,0 +1,13 @@
+Copyright 2011-2016 Canonical Ltd.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
diff --git a/vendor/gopkg.in/yaml.v2/README.md b/vendor/gopkg.in/yaml.v2/README.md
new file mode 100644
index 0000000..b50c6e8
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/README.md
@@ -0,0 +1,133 @@
+# YAML support for the Go language
+
+Introduction
+------------
+
+The yaml package enables Go programs to comfortably encode and decode YAML
+values. It was developed within [Canonical](https://www.canonical.com) as
+part of the [juju](https://juju.ubuntu.com) project, and is based on a
+pure Go port of the well-known [libyaml](http://pyyaml.org/wiki/LibYAML)
+C library to parse and generate YAML data quickly and reliably.
+
+Compatibility
+-------------
+
+The yaml package supports most of YAML 1.1 and 1.2, including support for
+anchors, tags, map merging, etc. Multi-document unmarshalling is not yet
+implemented, and base-60 floats from YAML 1.1 are purposefully not
+supported since they're a poor design and are gone in YAML 1.2.
+
+Installation and usage
+----------------------
+
+The import path for the package is *gopkg.in/yaml.v2*.
+
+To install it, run:
+
+ go get gopkg.in/yaml.v2
+
+API documentation
+-----------------
+
+If opened in a browser, the import path itself leads to the API documentation:
+
+ * [https://gopkg.in/yaml.v2](https://gopkg.in/yaml.v2)
+
+API stability
+-------------
+
+The package API for yaml v2 will remain stable as described in [gopkg.in](https://gopkg.in).
+
+
+License
+-------
+
+The yaml package is licensed under the Apache License 2.0. Please see the LICENSE file for details.
+
+
+Example
+-------
+
+```Go
+package main
+
+import (
+ "fmt"
+ "log"
+
+ "gopkg.in/yaml.v2"
+)
+
+var data = `
+a: Easy!
+b:
+ c: 2
+ d: [3, 4]
+`
+
+// Note: struct fields must be public in order for unmarshal to
+// correctly populate the data.
+type T struct {
+ A string
+ B struct {
+ RenamedC int `yaml:"c"`
+ D []int `yaml:",flow"`
+ }
+}
+
+func main() {
+ t := T{}
+
+ err := yaml.Unmarshal([]byte(data), &t)
+ if err != nil {
+ log.Fatalf("error: %v", err)
+ }
+ fmt.Printf("--- t:\n%v\n\n", t)
+
+ d, err := yaml.Marshal(&t)
+ if err != nil {
+ log.Fatalf("error: %v", err)
+ }
+ fmt.Printf("--- t dump:\n%s\n\n", string(d))
+
+ m := make(map[interface{}]interface{})
+
+ err = yaml.Unmarshal([]byte(data), &m)
+ if err != nil {
+ log.Fatalf("error: %v", err)
+ }
+ fmt.Printf("--- m:\n%v\n\n", m)
+
+ d, err = yaml.Marshal(&m)
+ if err != nil {
+ log.Fatalf("error: %v", err)
+ }
+ fmt.Printf("--- m dump:\n%s\n\n", string(d))
+}
+```
+
+This example will generate the following output:
+
+```
+--- t:
+{Easy! {2 [3 4]}}
+
+--- t dump:
+a: Easy!
+b:
+ c: 2
+ d: [3, 4]
+
+
+--- m:
+map[a:Easy! b:map[c:2 d:[3 4]]]
+
+--- m dump:
+a: Easy!
+b:
+ c: 2
+ d:
+ - 3
+ - 4
+```
+
diff --git a/vendor/gopkg.in/yaml.v2/apic.go b/vendor/gopkg.in/yaml.v2/apic.go
new file mode 100644
index 0000000..1f7e87e
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/apic.go
@@ -0,0 +1,739 @@
+package yaml
+
+import (
+ "io"
+)
+
+func yaml_insert_token(parser *yaml_parser_t, pos int, token *yaml_token_t) {
+ //fmt.Println("yaml_insert_token", "pos:", pos, "typ:", token.typ, "head:", parser.tokens_head, "len:", len(parser.tokens))
+
+ // Check if we can move the queue at the beginning of the buffer.
+ if parser.tokens_head > 0 && len(parser.tokens) == cap(parser.tokens) {
+ if parser.tokens_head != len(parser.tokens) {
+ copy(parser.tokens, parser.tokens[parser.tokens_head:])
+ }
+ parser.tokens = parser.tokens[:len(parser.tokens)-parser.tokens_head]
+ parser.tokens_head = 0
+ }
+ parser.tokens = append(parser.tokens, *token)
+ if pos < 0 {
+ return
+ }
+ copy(parser.tokens[parser.tokens_head+pos+1:], parser.tokens[parser.tokens_head+pos:])
+ parser.tokens[parser.tokens_head+pos] = *token
+}
+
+// Create a new parser object.
+func yaml_parser_initialize(parser *yaml_parser_t) bool {
+ *parser = yaml_parser_t{
+ raw_buffer: make([]byte, 0, input_raw_buffer_size),
+ buffer: make([]byte, 0, input_buffer_size),
+ }
+ return true
+}
+
+// Destroy a parser object.
+func yaml_parser_delete(parser *yaml_parser_t) {
+ *parser = yaml_parser_t{}
+}
+
+// String read handler.
+func yaml_string_read_handler(parser *yaml_parser_t, buffer []byte) (n int, err error) {
+ if parser.input_pos == len(parser.input) {
+ return 0, io.EOF
+ }
+ n = copy(buffer, parser.input[parser.input_pos:])
+ parser.input_pos += n
+ return n, nil
+}
+
+// Reader read handler.
+func yaml_reader_read_handler(parser *yaml_parser_t, buffer []byte) (n int, err error) {
+ return parser.input_reader.Read(buffer)
+}
+
+// Set a string input.
+func yaml_parser_set_input_string(parser *yaml_parser_t, input []byte) {
+ if parser.read_handler != nil {
+ panic("must set the input source only once")
+ }
+ parser.read_handler = yaml_string_read_handler
+ parser.input = input
+ parser.input_pos = 0
+}
+
+// Set a file input.
+func yaml_parser_set_input_reader(parser *yaml_parser_t, r io.Reader) {
+ if parser.read_handler != nil {
+ panic("must set the input source only once")
+ }
+ parser.read_handler = yaml_reader_read_handler
+ parser.input_reader = r
+}
+
+// Set the source encoding.
+func yaml_parser_set_encoding(parser *yaml_parser_t, encoding yaml_encoding_t) {
+ if parser.encoding != yaml_ANY_ENCODING {
+ panic("must set the encoding only once")
+ }
+ parser.encoding = encoding
+}
+
+// Create a new emitter object.
+func yaml_emitter_initialize(emitter *yaml_emitter_t) {
+ *emitter = yaml_emitter_t{
+ buffer: make([]byte, output_buffer_size),
+ raw_buffer: make([]byte, 0, output_raw_buffer_size),
+ states: make([]yaml_emitter_state_t, 0, initial_stack_size),
+ events: make([]yaml_event_t, 0, initial_queue_size),
+ }
+}
+
+// Destroy an emitter object.
+func yaml_emitter_delete(emitter *yaml_emitter_t) {
+ *emitter = yaml_emitter_t{}
+}
+
+// String write handler.
+func yaml_string_write_handler(emitter *yaml_emitter_t, buffer []byte) error {
+ *emitter.output_buffer = append(*emitter.output_buffer, buffer...)
+ return nil
+}
+
+// yaml_writer_write_handler uses emitter.output_writer to write the
+// emitted text.
+func yaml_writer_write_handler(emitter *yaml_emitter_t, buffer []byte) error {
+ _, err := emitter.output_writer.Write(buffer)
+ return err
+}
+
+// Set a string output.
+func yaml_emitter_set_output_string(emitter *yaml_emitter_t, output_buffer *[]byte) {
+ if emitter.write_handler != nil {
+ panic("must set the output target only once")
+ }
+ emitter.write_handler = yaml_string_write_handler
+ emitter.output_buffer = output_buffer
+}
+
+// Set a file output.
+func yaml_emitter_set_output_writer(emitter *yaml_emitter_t, w io.Writer) {
+ if emitter.write_handler != nil {
+ panic("must set the output target only once")
+ }
+ emitter.write_handler = yaml_writer_write_handler
+ emitter.output_writer = w
+}
+
+// Set the output encoding.
+func yaml_emitter_set_encoding(emitter *yaml_emitter_t, encoding yaml_encoding_t) {
+ if emitter.encoding != yaml_ANY_ENCODING {
+ panic("must set the output encoding only once")
+ }
+ emitter.encoding = encoding
+}
+
+// Set the canonical output style.
+func yaml_emitter_set_canonical(emitter *yaml_emitter_t, canonical bool) {
+ emitter.canonical = canonical
+}
+
+//// Set the indentation increment.
+func yaml_emitter_set_indent(emitter *yaml_emitter_t, indent int) {
+ if indent < 2 || indent > 9 {
+ indent = 2
+ }
+ emitter.best_indent = indent
+}
+
+// Set the preferred line width.
+func yaml_emitter_set_width(emitter *yaml_emitter_t, width int) {
+ if width < 0 {
+ width = -1
+ }
+ emitter.best_width = width
+}
+
+// Set if unescaped non-ASCII characters are allowed.
+func yaml_emitter_set_unicode(emitter *yaml_emitter_t, unicode bool) {
+ emitter.unicode = unicode
+}
+
+// Set the preferred line break character.
+func yaml_emitter_set_break(emitter *yaml_emitter_t, line_break yaml_break_t) {
+ emitter.line_break = line_break
+}
+
+///*
+// * Destroy a token object.
+// */
+//
+//YAML_DECLARE(void)
+//yaml_token_delete(yaml_token_t *token)
+//{
+// assert(token); // Non-NULL token object expected.
+//
+// switch (token.type)
+// {
+// case YAML_TAG_DIRECTIVE_TOKEN:
+// yaml_free(token.data.tag_directive.handle);
+// yaml_free(token.data.tag_directive.prefix);
+// break;
+//
+// case YAML_ALIAS_TOKEN:
+// yaml_free(token.data.alias.value);
+// break;
+//
+// case YAML_ANCHOR_TOKEN:
+// yaml_free(token.data.anchor.value);
+// break;
+//
+// case YAML_TAG_TOKEN:
+// yaml_free(token.data.tag.handle);
+// yaml_free(token.data.tag.suffix);
+// break;
+//
+// case YAML_SCALAR_TOKEN:
+// yaml_free(token.data.scalar.value);
+// break;
+//
+// default:
+// break;
+// }
+//
+// memset(token, 0, sizeof(yaml_token_t));
+//}
+//
+///*
+// * Check if a string is a valid UTF-8 sequence.
+// *
+// * Check 'reader.c' for more details on UTF-8 encoding.
+// */
+//
+//static int
+//yaml_check_utf8(yaml_char_t *start, size_t length)
+//{
+// yaml_char_t *end = start+length;
+// yaml_char_t *pointer = start;
+//
+// while (pointer < end) {
+// unsigned char octet;
+// unsigned int width;
+// unsigned int value;
+// size_t k;
+//
+// octet = pointer[0];
+// width = (octet & 0x80) == 0x00 ? 1 :
+// (octet & 0xE0) == 0xC0 ? 2 :
+// (octet & 0xF0) == 0xE0 ? 3 :
+// (octet & 0xF8) == 0xF0 ? 4 : 0;
+// value = (octet & 0x80) == 0x00 ? octet & 0x7F :
+// (octet & 0xE0) == 0xC0 ? octet & 0x1F :
+// (octet & 0xF0) == 0xE0 ? octet & 0x0F :
+// (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
+// if (!width) return 0;
+// if (pointer+width > end) return 0;
+// for (k = 1; k < width; k ++) {
+// octet = pointer[k];
+// if ((octet & 0xC0) != 0x80) return 0;
+// value = (value << 6) + (octet & 0x3F);
+// }
+// if (!((width == 1) ||
+// (width == 2 && value >= 0x80) ||
+// (width == 3 && value >= 0x800) ||
+// (width == 4 && value >= 0x10000))) return 0;
+//
+// pointer += width;
+// }
+//
+// return 1;
+//}
+//
+
+// Create STREAM-START.
+func yaml_stream_start_event_initialize(event *yaml_event_t, encoding yaml_encoding_t) {
+ *event = yaml_event_t{
+ typ: yaml_STREAM_START_EVENT,
+ encoding: encoding,
+ }
+}
+
+// Create STREAM-END.
+func yaml_stream_end_event_initialize(event *yaml_event_t) {
+ *event = yaml_event_t{
+ typ: yaml_STREAM_END_EVENT,
+ }
+}
+
+// Create DOCUMENT-START.
+func yaml_document_start_event_initialize(
+ event *yaml_event_t,
+ version_directive *yaml_version_directive_t,
+ tag_directives []yaml_tag_directive_t,
+ implicit bool,
+) {
+ *event = yaml_event_t{
+ typ: yaml_DOCUMENT_START_EVENT,
+ version_directive: version_directive,
+ tag_directives: tag_directives,
+ implicit: implicit,
+ }
+}
+
+// Create DOCUMENT-END.
+func yaml_document_end_event_initialize(event *yaml_event_t, implicit bool) {
+ *event = yaml_event_t{
+ typ: yaml_DOCUMENT_END_EVENT,
+ implicit: implicit,
+ }
+}
+
+///*
+// * Create ALIAS.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_alias_event_initialize(event *yaml_event_t, anchor *yaml_char_t)
+//{
+// mark yaml_mark_t = { 0, 0, 0 }
+// anchor_copy *yaml_char_t = NULL
+//
+// assert(event) // Non-NULL event object is expected.
+// assert(anchor) // Non-NULL anchor is expected.
+//
+// if (!yaml_check_utf8(anchor, strlen((char *)anchor))) return 0
+//
+// anchor_copy = yaml_strdup(anchor)
+// if (!anchor_copy)
+// return 0
+//
+// ALIAS_EVENT_INIT(*event, anchor_copy, mark, mark)
+//
+// return 1
+//}
+
+// Create SCALAR.
+func yaml_scalar_event_initialize(event *yaml_event_t, anchor, tag, value []byte, plain_implicit, quoted_implicit bool, style yaml_scalar_style_t) bool {
+ *event = yaml_event_t{
+ typ: yaml_SCALAR_EVENT,
+ anchor: anchor,
+ tag: tag,
+ value: value,
+ implicit: plain_implicit,
+ quoted_implicit: quoted_implicit,
+ style: yaml_style_t(style),
+ }
+ return true
+}
+
+// Create SEQUENCE-START.
+func yaml_sequence_start_event_initialize(event *yaml_event_t, anchor, tag []byte, implicit bool, style yaml_sequence_style_t) bool {
+ *event = yaml_event_t{
+ typ: yaml_SEQUENCE_START_EVENT,
+ anchor: anchor,
+ tag: tag,
+ implicit: implicit,
+ style: yaml_style_t(style),
+ }
+ return true
+}
+
+// Create SEQUENCE-END.
+func yaml_sequence_end_event_initialize(event *yaml_event_t) bool {
+ *event = yaml_event_t{
+ typ: yaml_SEQUENCE_END_EVENT,
+ }
+ return true
+}
+
+// Create MAPPING-START.
+func yaml_mapping_start_event_initialize(event *yaml_event_t, anchor, tag []byte, implicit bool, style yaml_mapping_style_t) {
+ *event = yaml_event_t{
+ typ: yaml_MAPPING_START_EVENT,
+ anchor: anchor,
+ tag: tag,
+ implicit: implicit,
+ style: yaml_style_t(style),
+ }
+}
+
+// Create MAPPING-END.
+func yaml_mapping_end_event_initialize(event *yaml_event_t) {
+ *event = yaml_event_t{
+ typ: yaml_MAPPING_END_EVENT,
+ }
+}
+
+// Destroy an event object.
+func yaml_event_delete(event *yaml_event_t) {
+ *event = yaml_event_t{}
+}
+
+///*
+// * Create a document object.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_initialize(document *yaml_document_t,
+// version_directive *yaml_version_directive_t,
+// tag_directives_start *yaml_tag_directive_t,
+// tag_directives_end *yaml_tag_directive_t,
+// start_implicit int, end_implicit int)
+//{
+// struct {
+// error yaml_error_type_t
+// } context
+// struct {
+// start *yaml_node_t
+// end *yaml_node_t
+// top *yaml_node_t
+// } nodes = { NULL, NULL, NULL }
+// version_directive_copy *yaml_version_directive_t = NULL
+// struct {
+// start *yaml_tag_directive_t
+// end *yaml_tag_directive_t
+// top *yaml_tag_directive_t
+// } tag_directives_copy = { NULL, NULL, NULL }
+// value yaml_tag_directive_t = { NULL, NULL }
+// mark yaml_mark_t = { 0, 0, 0 }
+//
+// assert(document) // Non-NULL document object is expected.
+// assert((tag_directives_start && tag_directives_end) ||
+// (tag_directives_start == tag_directives_end))
+// // Valid tag directives are expected.
+//
+// if (!STACK_INIT(&context, nodes, INITIAL_STACK_SIZE)) goto error
+//
+// if (version_directive) {
+// version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t))
+// if (!version_directive_copy) goto error
+// version_directive_copy.major = version_directive.major
+// version_directive_copy.minor = version_directive.minor
+// }
+//
+// if (tag_directives_start != tag_directives_end) {
+// tag_directive *yaml_tag_directive_t
+// if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE))
+// goto error
+// for (tag_directive = tag_directives_start
+// tag_directive != tag_directives_end; tag_directive ++) {
+// assert(tag_directive.handle)
+// assert(tag_directive.prefix)
+// if (!yaml_check_utf8(tag_directive.handle,
+// strlen((char *)tag_directive.handle)))
+// goto error
+// if (!yaml_check_utf8(tag_directive.prefix,
+// strlen((char *)tag_directive.prefix)))
+// goto error
+// value.handle = yaml_strdup(tag_directive.handle)
+// value.prefix = yaml_strdup(tag_directive.prefix)
+// if (!value.handle || !value.prefix) goto error
+// if (!PUSH(&context, tag_directives_copy, value))
+// goto error
+// value.handle = NULL
+// value.prefix = NULL
+// }
+// }
+//
+// DOCUMENT_INIT(*document, nodes.start, nodes.end, version_directive_copy,
+// tag_directives_copy.start, tag_directives_copy.top,
+// start_implicit, end_implicit, mark, mark)
+//
+// return 1
+//
+//error:
+// STACK_DEL(&context, nodes)
+// yaml_free(version_directive_copy)
+// while (!STACK_EMPTY(&context, tag_directives_copy)) {
+// value yaml_tag_directive_t = POP(&context, tag_directives_copy)
+// yaml_free(value.handle)
+// yaml_free(value.prefix)
+// }
+// STACK_DEL(&context, tag_directives_copy)
+// yaml_free(value.handle)
+// yaml_free(value.prefix)
+//
+// return 0
+//}
+//
+///*
+// * Destroy a document object.
+// */
+//
+//YAML_DECLARE(void)
+//yaml_document_delete(document *yaml_document_t)
+//{
+// struct {
+// error yaml_error_type_t
+// } context
+// tag_directive *yaml_tag_directive_t
+//
+// context.error = YAML_NO_ERROR // Eliminate a compiler warning.
+//
+// assert(document) // Non-NULL document object is expected.
+//
+// while (!STACK_EMPTY(&context, document.nodes)) {
+// node yaml_node_t = POP(&context, document.nodes)
+// yaml_free(node.tag)
+// switch (node.type) {
+// case YAML_SCALAR_NODE:
+// yaml_free(node.data.scalar.value)
+// break
+// case YAML_SEQUENCE_NODE:
+// STACK_DEL(&context, node.data.sequence.items)
+// break
+// case YAML_MAPPING_NODE:
+// STACK_DEL(&context, node.data.mapping.pairs)
+// break
+// default:
+// assert(0) // Should not happen.
+// }
+// }
+// STACK_DEL(&context, document.nodes)
+//
+// yaml_free(document.version_directive)
+// for (tag_directive = document.tag_directives.start
+// tag_directive != document.tag_directives.end
+// tag_directive++) {
+// yaml_free(tag_directive.handle)
+// yaml_free(tag_directive.prefix)
+// }
+// yaml_free(document.tag_directives.start)
+//
+// memset(document, 0, sizeof(yaml_document_t))
+//}
+//
+///**
+// * Get a document node.
+// */
+//
+//YAML_DECLARE(yaml_node_t *)
+//yaml_document_get_node(document *yaml_document_t, index int)
+//{
+// assert(document) // Non-NULL document object is expected.
+//
+// if (index > 0 && document.nodes.start + index <= document.nodes.top) {
+// return document.nodes.start + index - 1
+// }
+// return NULL
+//}
+//
+///**
+// * Get the root object.
+// */
+//
+//YAML_DECLARE(yaml_node_t *)
+//yaml_document_get_root_node(document *yaml_document_t)
+//{
+// assert(document) // Non-NULL document object is expected.
+//
+// if (document.nodes.top != document.nodes.start) {
+// return document.nodes.start
+// }
+// return NULL
+//}
+//
+///*
+// * Add a scalar node to a document.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_add_scalar(document *yaml_document_t,
+// tag *yaml_char_t, value *yaml_char_t, length int,
+// style yaml_scalar_style_t)
+//{
+// struct {
+// error yaml_error_type_t
+// } context
+// mark yaml_mark_t = { 0, 0, 0 }
+// tag_copy *yaml_char_t = NULL
+// value_copy *yaml_char_t = NULL
+// node yaml_node_t
+//
+// assert(document) // Non-NULL document object is expected.
+// assert(value) // Non-NULL value is expected.
+//
+// if (!tag) {
+// tag = (yaml_char_t *)YAML_DEFAULT_SCALAR_TAG
+// }
+//
+// if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error
+// tag_copy = yaml_strdup(tag)
+// if (!tag_copy) goto error
+//
+// if (length < 0) {
+// length = strlen((char *)value)
+// }
+//
+// if (!yaml_check_utf8(value, length)) goto error
+// value_copy = yaml_malloc(length+1)
+// if (!value_copy) goto error
+// memcpy(value_copy, value, length)
+// value_copy[length] = '\0'
+//
+// SCALAR_NODE_INIT(node, tag_copy, value_copy, length, style, mark, mark)
+// if (!PUSH(&context, document.nodes, node)) goto error
+//
+// return document.nodes.top - document.nodes.start
+//
+//error:
+// yaml_free(tag_copy)
+// yaml_free(value_copy)
+//
+// return 0
+//}
+//
+///*
+// * Add a sequence node to a document.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_add_sequence(document *yaml_document_t,
+// tag *yaml_char_t, style yaml_sequence_style_t)
+//{
+// struct {
+// error yaml_error_type_t
+// } context
+// mark yaml_mark_t = { 0, 0, 0 }
+// tag_copy *yaml_char_t = NULL
+// struct {
+// start *yaml_node_item_t
+// end *yaml_node_item_t
+// top *yaml_node_item_t
+// } items = { NULL, NULL, NULL }
+// node yaml_node_t
+//
+// assert(document) // Non-NULL document object is expected.
+//
+// if (!tag) {
+// tag = (yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG
+// }
+//
+// if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error
+// tag_copy = yaml_strdup(tag)
+// if (!tag_copy) goto error
+//
+// if (!STACK_INIT(&context, items, INITIAL_STACK_SIZE)) goto error
+//
+// SEQUENCE_NODE_INIT(node, tag_copy, items.start, items.end,
+// style, mark, mark)
+// if (!PUSH(&context, document.nodes, node)) goto error
+//
+// return document.nodes.top - document.nodes.start
+//
+//error:
+// STACK_DEL(&context, items)
+// yaml_free(tag_copy)
+//
+// return 0
+//}
+//
+///*
+// * Add a mapping node to a document.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_add_mapping(document *yaml_document_t,
+// tag *yaml_char_t, style yaml_mapping_style_t)
+//{
+// struct {
+// error yaml_error_type_t
+// } context
+// mark yaml_mark_t = { 0, 0, 0 }
+// tag_copy *yaml_char_t = NULL
+// struct {
+// start *yaml_node_pair_t
+// end *yaml_node_pair_t
+// top *yaml_node_pair_t
+// } pairs = { NULL, NULL, NULL }
+// node yaml_node_t
+//
+// assert(document) // Non-NULL document object is expected.
+//
+// if (!tag) {
+// tag = (yaml_char_t *)YAML_DEFAULT_MAPPING_TAG
+// }
+//
+// if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error
+// tag_copy = yaml_strdup(tag)
+// if (!tag_copy) goto error
+//
+// if (!STACK_INIT(&context, pairs, INITIAL_STACK_SIZE)) goto error
+//
+// MAPPING_NODE_INIT(node, tag_copy, pairs.start, pairs.end,
+// style, mark, mark)
+// if (!PUSH(&context, document.nodes, node)) goto error
+//
+// return document.nodes.top - document.nodes.start
+//
+//error:
+// STACK_DEL(&context, pairs)
+// yaml_free(tag_copy)
+//
+// return 0
+//}
+//
+///*
+// * Append an item to a sequence node.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_append_sequence_item(document *yaml_document_t,
+// sequence int, item int)
+//{
+// struct {
+// error yaml_error_type_t
+// } context
+//
+// assert(document) // Non-NULL document is required.
+// assert(sequence > 0
+// && document.nodes.start + sequence <= document.nodes.top)
+// // Valid sequence id is required.
+// assert(document.nodes.start[sequence-1].type == YAML_SEQUENCE_NODE)
+// // A sequence node is required.
+// assert(item > 0 && document.nodes.start + item <= document.nodes.top)
+// // Valid item id is required.
+//
+// if (!PUSH(&context,
+// document.nodes.start[sequence-1].data.sequence.items, item))
+// return 0
+//
+// return 1
+//}
+//
+///*
+// * Append a pair of a key and a value to a mapping node.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_append_mapping_pair(document *yaml_document_t,
+// mapping int, key int, value int)
+//{
+// struct {
+// error yaml_error_type_t
+// } context
+//
+// pair yaml_node_pair_t
+//
+// assert(document) // Non-NULL document is required.
+// assert(mapping > 0
+// && document.nodes.start + mapping <= document.nodes.top)
+// // Valid mapping id is required.
+// assert(document.nodes.start[mapping-1].type == YAML_MAPPING_NODE)
+// // A mapping node is required.
+// assert(key > 0 && document.nodes.start + key <= document.nodes.top)
+// // Valid key id is required.
+// assert(value > 0 && document.nodes.start + value <= document.nodes.top)
+// // Valid value id is required.
+//
+// pair.key = key
+// pair.value = value
+//
+// if (!PUSH(&context,
+// document.nodes.start[mapping-1].data.mapping.pairs, pair))
+// return 0
+//
+// return 1
+//}
+//
+//
diff --git a/vendor/gopkg.in/yaml.v2/decode.go b/vendor/gopkg.in/yaml.v2/decode.go
new file mode 100644
index 0000000..91679b5
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/decode.go
@@ -0,0 +1,788 @@
+package yaml
+
+import (
+ "encoding"
+ "encoding/base64"
+ "fmt"
+ "io"
+ "math"
+ "reflect"
+ "strconv"
+ "time"
+)
+
+const (
+ documentNode = 1 << iota
+ mappingNode
+ sequenceNode
+ scalarNode
+ aliasNode
+)
+
+type node struct {
+ kind int
+ line, column int
+ tag string
+ // For an alias node, alias holds the resolved alias.
+ alias *node
+ value string
+ implicit bool
+ children []*node
+ anchors map[string]*node
+}
+
+// ----------------------------------------------------------------------------
+// Parser, produces a node tree out of a libyaml event stream.
+
+type parser struct {
+ parser yaml_parser_t
+ event yaml_event_t
+ doc *node
+ doneInit bool
+}
+
+func newParser(b []byte) *parser {
+ p := parser{}
+ if !yaml_parser_initialize(&p.parser) {
+ panic("failed to initialize YAML emitter")
+ }
+ if len(b) == 0 {
+ b = []byte{'\n'}
+ }
+ yaml_parser_set_input_string(&p.parser, b)
+ return &p
+}
+
+func newParserFromReader(r io.Reader) *parser {
+ p := parser{}
+ if !yaml_parser_initialize(&p.parser) {
+ panic("failed to initialize YAML emitter")
+ }
+ yaml_parser_set_input_reader(&p.parser, r)
+ return &p
+}
+
+func (p *parser) init() {
+ if p.doneInit {
+ return
+ }
+ p.expect(yaml_STREAM_START_EVENT)
+ p.doneInit = true
+}
+
+func (p *parser) destroy() {
+ if p.event.typ != yaml_NO_EVENT {
+ yaml_event_delete(&p.event)
+ }
+ yaml_parser_delete(&p.parser)
+}
+
+// expect consumes an event from the event stream and
+// checks that it's of the expected type.
+func (p *parser) expect(e yaml_event_type_t) {
+ if p.event.typ == yaml_NO_EVENT {
+ if !yaml_parser_parse(&p.parser, &p.event) {
+ p.fail()
+ }
+ }
+ if p.event.typ == yaml_STREAM_END_EVENT {
+ failf("attempted to go past the end of stream; corrupted value?")
+ }
+ if p.event.typ != e {
+ p.parser.problem = fmt.Sprintf("expected %s event but got %s", e, p.event.typ)
+ p.fail()
+ }
+ yaml_event_delete(&p.event)
+ p.event.typ = yaml_NO_EVENT
+}
+
+// peek peeks at the next event in the event stream,
+// puts the results into p.event and returns the event type.
+func (p *parser) peek() yaml_event_type_t {
+ if p.event.typ != yaml_NO_EVENT {
+ return p.event.typ
+ }
+ if !yaml_parser_parse(&p.parser, &p.event) {
+ p.fail()
+ }
+ return p.event.typ
+}
+
+func (p *parser) fail() {
+ var where string
+ var line int
+ if p.parser.problem_mark.line != 0 {
+ line = p.parser.problem_mark.line
+ // Scanner errors don't iterate line before returning error
+ if p.parser.error == yaml_SCANNER_ERROR {
+ line++
+ }
+ } else if p.parser.context_mark.line != 0 {
+ line = p.parser.context_mark.line
+ }
+ if line != 0 {
+ where = "line " + strconv.Itoa(line) + ": "
+ }
+ var msg string
+ if len(p.parser.problem) > 0 {
+ msg = p.parser.problem
+ } else {
+ msg = "unknown problem parsing YAML content"
+ }
+ failf("%s%s", where, msg)
+}
+
+func (p *parser) anchor(n *node, anchor []byte) {
+ if anchor != nil {
+ p.doc.anchors[string(anchor)] = n
+ }
+}
+
+func (p *parser) parse() *node {
+ p.init()
+ switch p.peek() {
+ case yaml_SCALAR_EVENT:
+ return p.scalar()
+ case yaml_ALIAS_EVENT:
+ return p.alias()
+ case yaml_MAPPING_START_EVENT:
+ return p.mapping()
+ case yaml_SEQUENCE_START_EVENT:
+ return p.sequence()
+ case yaml_DOCUMENT_START_EVENT:
+ return p.document()
+ case yaml_STREAM_END_EVENT:
+ // Happens when attempting to decode an empty buffer.
+ return nil
+ default:
+ panic("attempted to parse unknown event: " + p.event.typ.String())
+ }
+}
+
+func (p *parser) node(kind int) *node {
+ return &node{
+ kind: kind,
+ line: p.event.start_mark.line,
+ column: p.event.start_mark.column,
+ }
+}
+
+func (p *parser) document() *node {
+ n := p.node(documentNode)
+ n.anchors = make(map[string]*node)
+ p.doc = n
+ p.expect(yaml_DOCUMENT_START_EVENT)
+ n.children = append(n.children, p.parse())
+ p.expect(yaml_DOCUMENT_END_EVENT)
+ return n
+}
+
+func (p *parser) alias() *node {
+ n := p.node(aliasNode)
+ n.value = string(p.event.anchor)
+ n.alias = p.doc.anchors[n.value]
+ if n.alias == nil {
+ failf("unknown anchor '%s' referenced", n.value)
+ }
+ p.expect(yaml_ALIAS_EVENT)
+ return n
+}
+
+func (p *parser) scalar() *node {
+ n := p.node(scalarNode)
+ n.value = string(p.event.value)
+ n.tag = string(p.event.tag)
+ n.implicit = p.event.implicit
+ p.anchor(n, p.event.anchor)
+ p.expect(yaml_SCALAR_EVENT)
+ return n
+}
+
+func (p *parser) sequence() *node {
+ n := p.node(sequenceNode)
+ p.anchor(n, p.event.anchor)
+ p.expect(yaml_SEQUENCE_START_EVENT)
+ for p.peek() != yaml_SEQUENCE_END_EVENT {
+ n.children = append(n.children, p.parse())
+ }
+ p.expect(yaml_SEQUENCE_END_EVENT)
+ return n
+}
+
+func (p *parser) mapping() *node {
+ n := p.node(mappingNode)
+ p.anchor(n, p.event.anchor)
+ p.expect(yaml_MAPPING_START_EVENT)
+ for p.peek() != yaml_MAPPING_END_EVENT {
+ n.children = append(n.children, p.parse(), p.parse())
+ }
+ p.expect(yaml_MAPPING_END_EVENT)
+ return n
+}
+
+// ----------------------------------------------------------------------------
+// Decoder, unmarshals a node into a provided value.
+
+type decoder struct {
+ doc *node
+ aliases map[*node]bool
+ mapType reflect.Type
+ terrors []string
+ strict bool
+
+ decodeCount int
+ aliasCount int
+ aliasDepth int
+}
+
+var (
+ mapItemType = reflect.TypeOf(MapItem{})
+ durationType = reflect.TypeOf(time.Duration(0))
+ defaultMapType = reflect.TypeOf(map[interface{}]interface{}{})
+ ifaceType = defaultMapType.Elem()
+ timeType = reflect.TypeOf(time.Time{})
+ ptrTimeType = reflect.TypeOf(&time.Time{})
+)
+
+func newDecoder(strict bool) *decoder {
+ d := &decoder{mapType: defaultMapType, strict: strict}
+ d.aliases = make(map[*node]bool)
+ return d
+}
+
+func (d *decoder) terror(n *node, tag string, out reflect.Value) {
+ if n.tag != "" {
+ tag = n.tag
+ }
+ value := n.value
+ if tag != yaml_SEQ_TAG && tag != yaml_MAP_TAG {
+ if len(value) > 10 {
+ value = " `" + value[:7] + "...`"
+ } else {
+ value = " `" + value + "`"
+ }
+ }
+ d.terrors = append(d.terrors, fmt.Sprintf("line %d: cannot unmarshal %s%s into %s", n.line+1, shortTag(tag), value, out.Type()))
+}
+
+func (d *decoder) callUnmarshaler(n *node, u Unmarshaler) (good bool) {
+ terrlen := len(d.terrors)
+ err := u.UnmarshalYAML(func(v interface{}) (err error) {
+ defer handleErr(&err)
+ d.unmarshal(n, reflect.ValueOf(v))
+ if len(d.terrors) > terrlen {
+ issues := d.terrors[terrlen:]
+ d.terrors = d.terrors[:terrlen]
+ return &TypeError{issues}
+ }
+ return nil
+ })
+ if e, ok := err.(*TypeError); ok {
+ d.terrors = append(d.terrors, e.Errors...)
+ return false
+ }
+ if err != nil {
+ fail(err)
+ }
+ return true
+}
+
+// d.prepare initializes and dereferences pointers and calls UnmarshalYAML
+// if a value is found to implement it.
+// It returns the initialized and dereferenced out value, whether
+// unmarshalling was already done by UnmarshalYAML, and if so whether
+// its types unmarshalled appropriately.
+//
+// If n holds a null value, prepare returns before doing anything.
+func (d *decoder) prepare(n *node, out reflect.Value) (newout reflect.Value, unmarshaled, good bool) {
+ if n.tag == yaml_NULL_TAG || n.kind == scalarNode && n.tag == "" && (n.value == "null" || n.value == "~" || n.value == "" && n.implicit) {
+ return out, false, false
+ }
+ again := true
+ for again {
+ again = false
+ if out.Kind() == reflect.Ptr {
+ if out.IsNil() {
+ out.Set(reflect.New(out.Type().Elem()))
+ }
+ out = out.Elem()
+ again = true
+ }
+ if out.CanAddr() {
+ if u, ok := out.Addr().Interface().(Unmarshaler); ok {
+ good = d.callUnmarshaler(n, u)
+ return out, true, good
+ }
+ }
+ }
+ return out, false, false
+}
+
+func (d *decoder) unmarshal(n *node, out reflect.Value) (good bool) {
+ d.decodeCount++
+ if d.aliasDepth > 0 {
+ d.aliasCount++
+ }
+ if d.aliasCount > 100 && d.decodeCount > 1000 && float64(d.aliasCount)/float64(d.decodeCount) > 0.99 {
+ failf("document contains excessive aliasing")
+ }
+ switch n.kind {
+ case documentNode:
+ return d.document(n, out)
+ case aliasNode:
+ return d.alias(n, out)
+ }
+ out, unmarshaled, good := d.prepare(n, out)
+ if unmarshaled {
+ return good
+ }
+ switch n.kind {
+ case scalarNode:
+ good = d.scalar(n, out)
+ case mappingNode:
+ good = d.mapping(n, out)
+ case sequenceNode:
+ good = d.sequence(n, out)
+ default:
+ panic("internal error: unknown node kind: " + strconv.Itoa(n.kind))
+ }
+ return good
+}
+
+func (d *decoder) document(n *node, out reflect.Value) (good bool) {
+ if len(n.children) == 1 {
+ d.doc = n
+ d.unmarshal(n.children[0], out)
+ return true
+ }
+ return false
+}
+
+func (d *decoder) alias(n *node, out reflect.Value) (good bool) {
+ if d.aliases[n] {
+ // TODO this could actually be allowed in some circumstances.
+ failf("anchor '%s' value contains itself", n.value)
+ }
+ d.aliases[n] = true
+ d.aliasDepth++
+ good = d.unmarshal(n.alias, out)
+ d.aliasDepth--
+ delete(d.aliases, n)
+ return good
+}
+
+var zeroValue reflect.Value
+
+func resetMap(out reflect.Value) {
+ for _, k := range out.MapKeys() {
+ out.SetMapIndex(k, zeroValue)
+ }
+}
+
+func (d *decoder) scalar(n *node, out reflect.Value) bool {
+ var tag string
+ var resolved interface{}
+ if n.tag == "" && !n.implicit {
+ tag = yaml_STR_TAG
+ resolved = n.value
+ } else {
+ tag, resolved = resolve(n.tag, n.value)
+ if tag == yaml_BINARY_TAG {
+ data, err := base64.StdEncoding.DecodeString(resolved.(string))
+ if err != nil {
+ failf("!!binary value contains invalid base64 data")
+ }
+ resolved = string(data)
+ }
+ }
+ if resolved == nil {
+ if out.Kind() == reflect.Map && !out.CanAddr() {
+ resetMap(out)
+ } else {
+ out.Set(reflect.Zero(out.Type()))
+ }
+ return true
+ }
+ if resolvedv := reflect.ValueOf(resolved); out.Type() == resolvedv.Type() {
+ // We've resolved to exactly the type we want, so use that.
+ out.Set(resolvedv)
+ return true
+ }
+ // Perhaps we can use the value as a TextUnmarshaler to
+ // set its value.
+ if out.CanAddr() {
+ u, ok := out.Addr().Interface().(encoding.TextUnmarshaler)
+ if ok {
+ var text []byte
+ if tag == yaml_BINARY_TAG {
+ text = []byte(resolved.(string))
+ } else {
+ // We let any value be unmarshaled into TextUnmarshaler.
+ // That might be more lax than we'd like, but the
+ // TextUnmarshaler itself should bowl out any dubious values.
+ text = []byte(n.value)
+ }
+ err := u.UnmarshalText(text)
+ if err != nil {
+ fail(err)
+ }
+ return true
+ }
+ }
+ switch out.Kind() {
+ case reflect.String:
+ if tag == yaml_BINARY_TAG {
+ out.SetString(resolved.(string))
+ return true
+ }
+ if resolved != nil {
+ out.SetString(n.value)
+ return true
+ }
+ case reflect.Interface:
+ if resolved == nil {
+ out.Set(reflect.Zero(out.Type()))
+ } else if tag == yaml_TIMESTAMP_TAG {
+ // It looks like a timestamp but for backward compatibility
+ // reasons we set it as a string, so that code that unmarshals
+ // timestamp-like values into interface{} will continue to
+ // see a string and not a time.Time.
+ // TODO(v3) Drop this.
+ out.Set(reflect.ValueOf(n.value))
+ } else {
+ out.Set(reflect.ValueOf(resolved))
+ }
+ return true
+ case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+ switch resolved := resolved.(type) {
+ case int:
+ if !out.OverflowInt(int64(resolved)) {
+ out.SetInt(int64(resolved))
+ return true
+ }
+ case int64:
+ if !out.OverflowInt(resolved) {
+ out.SetInt(resolved)
+ return true
+ }
+ case uint64:
+ if resolved <= math.MaxInt64 && !out.OverflowInt(int64(resolved)) {
+ out.SetInt(int64(resolved))
+ return true
+ }
+ case float64:
+ if resolved <= math.MaxInt64 && !out.OverflowInt(int64(resolved)) {
+ out.SetInt(int64(resolved))
+ return true
+ }
+ case string:
+ if out.Type() == durationType {
+ d, err := time.ParseDuration(resolved)
+ if err == nil {
+ out.SetInt(int64(d))
+ return true
+ }
+ }
+ }
+ case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+ switch resolved := resolved.(type) {
+ case int:
+ if resolved >= 0 && !out.OverflowUint(uint64(resolved)) {
+ out.SetUint(uint64(resolved))
+ return true
+ }
+ case int64:
+ if resolved >= 0 && !out.OverflowUint(uint64(resolved)) {
+ out.SetUint(uint64(resolved))
+ return true
+ }
+ case uint64:
+ if !out.OverflowUint(uint64(resolved)) {
+ out.SetUint(uint64(resolved))
+ return true
+ }
+ case float64:
+ if resolved <= math.MaxUint64 && !out.OverflowUint(uint64(resolved)) {
+ out.SetUint(uint64(resolved))
+ return true
+ }
+ }
+ case reflect.Bool:
+ switch resolved := resolved.(type) {
+ case bool:
+ out.SetBool(resolved)
+ return true
+ }
+ case reflect.Float32, reflect.Float64:
+ switch resolved := resolved.(type) {
+ case int:
+ out.SetFloat(float64(resolved))
+ return true
+ case int64:
+ out.SetFloat(float64(resolved))
+ return true
+ case uint64:
+ out.SetFloat(float64(resolved))
+ return true
+ case float64:
+ out.SetFloat(resolved)
+ return true
+ }
+ case reflect.Struct:
+ if resolvedv := reflect.ValueOf(resolved); out.Type() == resolvedv.Type() {
+ out.Set(resolvedv)
+ return true
+ }
+ case reflect.Ptr:
+ if out.Type().Elem() == reflect.TypeOf(resolved) {
+ // TODO DOes this make sense? When is out a Ptr except when decoding a nil value?
+ elem := reflect.New(out.Type().Elem())
+ elem.Elem().Set(reflect.ValueOf(resolved))
+ out.Set(elem)
+ return true
+ }
+ }
+ d.terror(n, tag, out)
+ return false
+}
+
+func settableValueOf(i interface{}) reflect.Value {
+ v := reflect.ValueOf(i)
+ sv := reflect.New(v.Type()).Elem()
+ sv.Set(v)
+ return sv
+}
+
+func (d *decoder) sequence(n *node, out reflect.Value) (good bool) {
+ l := len(n.children)
+
+ var iface reflect.Value
+ switch out.Kind() {
+ case reflect.Slice:
+ out.Set(reflect.MakeSlice(out.Type(), l, l))
+ case reflect.Array:
+ if l != out.Len() {
+ failf("invalid array: want %d elements but got %d", out.Len(), l)
+ }
+ case reflect.Interface:
+ // No type hints. Will have to use a generic sequence.
+ iface = out
+ out = settableValueOf(make([]interface{}, l))
+ default:
+ d.terror(n, yaml_SEQ_TAG, out)
+ return false
+ }
+ et := out.Type().Elem()
+
+ j := 0
+ for i := 0; i < l; i++ {
+ e := reflect.New(et).Elem()
+ if ok := d.unmarshal(n.children[i], e); ok {
+ out.Index(j).Set(e)
+ j++
+ }
+ }
+ if out.Kind() != reflect.Array {
+ out.Set(out.Slice(0, j))
+ }
+ if iface.IsValid() {
+ iface.Set(out)
+ }
+ return true
+}
+
+func (d *decoder) mapping(n *node, out reflect.Value) (good bool) {
+ switch out.Kind() {
+ case reflect.Struct:
+ return d.mappingStruct(n, out)
+ case reflect.Slice:
+ return d.mappingSlice(n, out)
+ case reflect.Map:
+ // okay
+ case reflect.Interface:
+ if d.mapType.Kind() == reflect.Map {
+ iface := out
+ out = reflect.MakeMap(d.mapType)
+ iface.Set(out)
+ } else {
+ slicev := reflect.New(d.mapType).Elem()
+ if !d.mappingSlice(n, slicev) {
+ return false
+ }
+ out.Set(slicev)
+ return true
+ }
+ default:
+ d.terror(n, yaml_MAP_TAG, out)
+ return false
+ }
+ outt := out.Type()
+ kt := outt.Key()
+ et := outt.Elem()
+
+ mapType := d.mapType
+ if outt.Key() == ifaceType && outt.Elem() == ifaceType {
+ d.mapType = outt
+ }
+
+ if out.IsNil() {
+ out.Set(reflect.MakeMap(outt))
+ }
+ l := len(n.children)
+ for i := 0; i < l; i += 2 {
+ if isMerge(n.children[i]) {
+ d.merge(n.children[i+1], out)
+ continue
+ }
+ k := reflect.New(kt).Elem()
+ if d.unmarshal(n.children[i], k) {
+ kkind := k.Kind()
+ if kkind == reflect.Interface {
+ kkind = k.Elem().Kind()
+ }
+ if kkind == reflect.Map || kkind == reflect.Slice {
+ failf("invalid map key: %#v", k.Interface())
+ }
+ e := reflect.New(et).Elem()
+ if d.unmarshal(n.children[i+1], e) {
+ d.setMapIndex(n.children[i+1], out, k, e)
+ }
+ }
+ }
+ d.mapType = mapType
+ return true
+}
+
+func (d *decoder) setMapIndex(n *node, out, k, v reflect.Value) {
+ if d.strict && out.MapIndex(k) != zeroValue {
+ d.terrors = append(d.terrors, fmt.Sprintf("line %d: key %#v already set in map", n.line+1, k.Interface()))
+ return
+ }
+ out.SetMapIndex(k, v)
+}
+
+func (d *decoder) mappingSlice(n *node, out reflect.Value) (good bool) {
+ outt := out.Type()
+ if outt.Elem() != mapItemType {
+ d.terror(n, yaml_MAP_TAG, out)
+ return false
+ }
+
+ mapType := d.mapType
+ d.mapType = outt
+
+ var slice []MapItem
+ var l = len(n.children)
+ for i := 0; i < l; i += 2 {
+ if isMerge(n.children[i]) {
+ d.merge(n.children[i+1], out)
+ continue
+ }
+ item := MapItem{}
+ k := reflect.ValueOf(&item.Key).Elem()
+ if d.unmarshal(n.children[i], k) {
+ v := reflect.ValueOf(&item.Value).Elem()
+ if d.unmarshal(n.children[i+1], v) {
+ slice = append(slice, item)
+ }
+ }
+ }
+ out.Set(reflect.ValueOf(slice))
+ d.mapType = mapType
+ return true
+}
+
+func (d *decoder) mappingStruct(n *node, out reflect.Value) (good bool) {
+ sinfo, err := getStructInfo(out.Type())
+ if err != nil {
+ panic(err)
+ }
+ name := settableValueOf("")
+ l := len(n.children)
+
+ var inlineMap reflect.Value
+ var elemType reflect.Type
+ if sinfo.InlineMap != -1 {
+ inlineMap = out.Field(sinfo.InlineMap)
+ inlineMap.Set(reflect.New(inlineMap.Type()).Elem())
+ elemType = inlineMap.Type().Elem()
+ }
+
+ var doneFields []bool
+ if d.strict {
+ doneFields = make([]bool, len(sinfo.FieldsList))
+ }
+ for i := 0; i < l; i += 2 {
+ ni := n.children[i]
+ if isMerge(ni) {
+ d.merge(n.children[i+1], out)
+ continue
+ }
+ if !d.unmarshal(ni, name) {
+ continue
+ }
+ if info, ok := sinfo.FieldsMap[name.String()]; ok {
+ if d.strict {
+ if doneFields[info.Id] {
+ d.terrors = append(d.terrors, fmt.Sprintf("line %d: field %s already set in type %s", ni.line+1, name.String(), out.Type()))
+ continue
+ }
+ doneFields[info.Id] = true
+ }
+ var field reflect.Value
+ if info.Inline == nil {
+ field = out.Field(info.Num)
+ } else {
+ field = out.FieldByIndex(info.Inline)
+ }
+ d.unmarshal(n.children[i+1], field)
+ } else if sinfo.InlineMap != -1 {
+ if inlineMap.IsNil() {
+ inlineMap.Set(reflect.MakeMap(inlineMap.Type()))
+ }
+ value := reflect.New(elemType).Elem()
+ d.unmarshal(n.children[i+1], value)
+ d.setMapIndex(n.children[i+1], inlineMap, name, value)
+ } else if d.strict {
+ d.terrors = append(d.terrors, fmt.Sprintf("line %d: field %s not found in type %s", ni.line+1, name.String(), out.Type()))
+ }
+ }
+ return true
+}
+
+func failWantMap() {
+ failf("map merge requires map or sequence of maps as the value")
+}
+
+func (d *decoder) merge(n *node, out reflect.Value) {
+ switch n.kind {
+ case mappingNode:
+ d.unmarshal(n, out)
+ case aliasNode:
+ an, ok := d.doc.anchors[n.value]
+ if ok && an.kind != mappingNode {
+ failWantMap()
+ }
+ d.unmarshal(n, out)
+ case sequenceNode:
+ // Step backwards as earlier nodes take precedence.
+ for i := len(n.children) - 1; i >= 0; i-- {
+ ni := n.children[i]
+ if ni.kind == aliasNode {
+ an, ok := d.doc.anchors[ni.value]
+ if ok && an.kind != mappingNode {
+ failWantMap()
+ }
+ } else if ni.kind != mappingNode {
+ failWantMap()
+ }
+ d.unmarshal(ni, out)
+ }
+ default:
+ failWantMap()
+ }
+}
+
+func isMerge(n *node) bool {
+ return n.kind == scalarNode && n.value == "<<" && (n.implicit == true || n.tag == yaml_MERGE_TAG)
+}
diff --git a/vendor/gopkg.in/yaml.v2/emitterc.go b/vendor/gopkg.in/yaml.v2/emitterc.go
new file mode 100644
index 0000000..a1c2cc5
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/emitterc.go
@@ -0,0 +1,1685 @@
+package yaml
+
+import (
+ "bytes"
+ "fmt"
+)
+
+// Flush the buffer if needed.
+func flush(emitter *yaml_emitter_t) bool {
+ if emitter.buffer_pos+5 >= len(emitter.buffer) {
+ return yaml_emitter_flush(emitter)
+ }
+ return true
+}
+
+// Put a character to the output buffer.
+func put(emitter *yaml_emitter_t, value byte) bool {
+ if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) {
+ return false
+ }
+ emitter.buffer[emitter.buffer_pos] = value
+ emitter.buffer_pos++
+ emitter.column++
+ return true
+}
+
+// Put a line break to the output buffer.
+func put_break(emitter *yaml_emitter_t) bool {
+ if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) {
+ return false
+ }
+ switch emitter.line_break {
+ case yaml_CR_BREAK:
+ emitter.buffer[emitter.buffer_pos] = '\r'
+ emitter.buffer_pos += 1
+ case yaml_LN_BREAK:
+ emitter.buffer[emitter.buffer_pos] = '\n'
+ emitter.buffer_pos += 1
+ case yaml_CRLN_BREAK:
+ emitter.buffer[emitter.buffer_pos+0] = '\r'
+ emitter.buffer[emitter.buffer_pos+1] = '\n'
+ emitter.buffer_pos += 2
+ default:
+ panic("unknown line break setting")
+ }
+ emitter.column = 0
+ emitter.line++
+ return true
+}
+
+// Copy a character from a string into buffer.
+func write(emitter *yaml_emitter_t, s []byte, i *int) bool {
+ if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) {
+ return false
+ }
+ p := emitter.buffer_pos
+ w := width(s[*i])
+ switch w {
+ case 4:
+ emitter.buffer[p+3] = s[*i+3]
+ fallthrough
+ case 3:
+ emitter.buffer[p+2] = s[*i+2]
+ fallthrough
+ case 2:
+ emitter.buffer[p+1] = s[*i+1]
+ fallthrough
+ case 1:
+ emitter.buffer[p+0] = s[*i+0]
+ default:
+ panic("unknown character width")
+ }
+ emitter.column++
+ emitter.buffer_pos += w
+ *i += w
+ return true
+}
+
+// Write a whole string into buffer.
+func write_all(emitter *yaml_emitter_t, s []byte) bool {
+ for i := 0; i < len(s); {
+ if !write(emitter, s, &i) {
+ return false
+ }
+ }
+ return true
+}
+
+// Copy a line break character from a string into buffer.
+func write_break(emitter *yaml_emitter_t, s []byte, i *int) bool {
+ if s[*i] == '\n' {
+ if !put_break(emitter) {
+ return false
+ }
+ *i++
+ } else {
+ if !write(emitter, s, i) {
+ return false
+ }
+ emitter.column = 0
+ emitter.line++
+ }
+ return true
+}
+
+// Set an emitter error and return false.
+func yaml_emitter_set_emitter_error(emitter *yaml_emitter_t, problem string) bool {
+ emitter.error = yaml_EMITTER_ERROR
+ emitter.problem = problem
+ return false
+}
+
+// Emit an event.
+func yaml_emitter_emit(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+ emitter.events = append(emitter.events, *event)
+ for !yaml_emitter_need_more_events(emitter) {
+ event := &emitter.events[emitter.events_head]
+ if !yaml_emitter_analyze_event(emitter, event) {
+ return false
+ }
+ if !yaml_emitter_state_machine(emitter, event) {
+ return false
+ }
+ yaml_event_delete(event)
+ emitter.events_head++
+ }
+ return true
+}
+
+// Check if we need to accumulate more events before emitting.
+//
+// We accumulate extra
+// - 1 event for DOCUMENT-START
+// - 2 events for SEQUENCE-START
+// - 3 events for MAPPING-START
+//
+func yaml_emitter_need_more_events(emitter *yaml_emitter_t) bool {
+ if emitter.events_head == len(emitter.events) {
+ return true
+ }
+ var accumulate int
+ switch emitter.events[emitter.events_head].typ {
+ case yaml_DOCUMENT_START_EVENT:
+ accumulate = 1
+ break
+ case yaml_SEQUENCE_START_EVENT:
+ accumulate = 2
+ break
+ case yaml_MAPPING_START_EVENT:
+ accumulate = 3
+ break
+ default:
+ return false
+ }
+ if len(emitter.events)-emitter.events_head > accumulate {
+ return false
+ }
+ var level int
+ for i := emitter.events_head; i < len(emitter.events); i++ {
+ switch emitter.events[i].typ {
+ case yaml_STREAM_START_EVENT, yaml_DOCUMENT_START_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT:
+ level++
+ case yaml_STREAM_END_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_END_EVENT, yaml_MAPPING_END_EVENT:
+ level--
+ }
+ if level == 0 {
+ return false
+ }
+ }
+ return true
+}
+
+// Append a directive to the directives stack.
+func yaml_emitter_append_tag_directive(emitter *yaml_emitter_t, value *yaml_tag_directive_t, allow_duplicates bool) bool {
+ for i := 0; i < len(emitter.tag_directives); i++ {
+ if bytes.Equal(value.handle, emitter.tag_directives[i].handle) {
+ if allow_duplicates {
+ return true
+ }
+ return yaml_emitter_set_emitter_error(emitter, "duplicate %TAG directive")
+ }
+ }
+
+ // [Go] Do we actually need to copy this given garbage collection
+ // and the lack of deallocating destructors?
+ tag_copy := yaml_tag_directive_t{
+ handle: make([]byte, len(value.handle)),
+ prefix: make([]byte, len(value.prefix)),
+ }
+ copy(tag_copy.handle, value.handle)
+ copy(tag_copy.prefix, value.prefix)
+ emitter.tag_directives = append(emitter.tag_directives, tag_copy)
+ return true
+}
+
+// Increase the indentation level.
+func yaml_emitter_increase_indent(emitter *yaml_emitter_t, flow, indentless bool) bool {
+ emitter.indents = append(emitter.indents, emitter.indent)
+ if emitter.indent < 0 {
+ if flow {
+ emitter.indent = emitter.best_indent
+ } else {
+ emitter.indent = 0
+ }
+ } else if !indentless {
+ emitter.indent += emitter.best_indent
+ }
+ return true
+}
+
+// State dispatcher.
+func yaml_emitter_state_machine(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+ switch emitter.state {
+ default:
+ case yaml_EMIT_STREAM_START_STATE:
+ return yaml_emitter_emit_stream_start(emitter, event)
+
+ case yaml_EMIT_FIRST_DOCUMENT_START_STATE:
+ return yaml_emitter_emit_document_start(emitter, event, true)
+
+ case yaml_EMIT_DOCUMENT_START_STATE:
+ return yaml_emitter_emit_document_start(emitter, event, false)
+
+ case yaml_EMIT_DOCUMENT_CONTENT_STATE:
+ return yaml_emitter_emit_document_content(emitter, event)
+
+ case yaml_EMIT_DOCUMENT_END_STATE:
+ return yaml_emitter_emit_document_end(emitter, event)
+
+ case yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE:
+ return yaml_emitter_emit_flow_sequence_item(emitter, event, true)
+
+ case yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE:
+ return yaml_emitter_emit_flow_sequence_item(emitter, event, false)
+
+ case yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE:
+ return yaml_emitter_emit_flow_mapping_key(emitter, event, true)
+
+ case yaml_EMIT_FLOW_MAPPING_KEY_STATE:
+ return yaml_emitter_emit_flow_mapping_key(emitter, event, false)
+
+ case yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE:
+ return yaml_emitter_emit_flow_mapping_value(emitter, event, true)
+
+ case yaml_EMIT_FLOW_MAPPING_VALUE_STATE:
+ return yaml_emitter_emit_flow_mapping_value(emitter, event, false)
+
+ case yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE:
+ return yaml_emitter_emit_block_sequence_item(emitter, event, true)
+
+ case yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE:
+ return yaml_emitter_emit_block_sequence_item(emitter, event, false)
+
+ case yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE:
+ return yaml_emitter_emit_block_mapping_key(emitter, event, true)
+
+ case yaml_EMIT_BLOCK_MAPPING_KEY_STATE:
+ return yaml_emitter_emit_block_mapping_key(emitter, event, false)
+
+ case yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE:
+ return yaml_emitter_emit_block_mapping_value(emitter, event, true)
+
+ case yaml_EMIT_BLOCK_MAPPING_VALUE_STATE:
+ return yaml_emitter_emit_block_mapping_value(emitter, event, false)
+
+ case yaml_EMIT_END_STATE:
+ return yaml_emitter_set_emitter_error(emitter, "expected nothing after STREAM-END")
+ }
+ panic("invalid emitter state")
+}
+
+// Expect STREAM-START.
+func yaml_emitter_emit_stream_start(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+ if event.typ != yaml_STREAM_START_EVENT {
+ return yaml_emitter_set_emitter_error(emitter, "expected STREAM-START")
+ }
+ if emitter.encoding == yaml_ANY_ENCODING {
+ emitter.encoding = event.encoding
+ if emitter.encoding == yaml_ANY_ENCODING {
+ emitter.encoding = yaml_UTF8_ENCODING
+ }
+ }
+ if emitter.best_indent < 2 || emitter.best_indent > 9 {
+ emitter.best_indent = 2
+ }
+ if emitter.best_width >= 0 && emitter.best_width <= emitter.best_indent*2 {
+ emitter.best_width = 80
+ }
+ if emitter.best_width < 0 {
+ emitter.best_width = 1<<31 - 1
+ }
+ if emitter.line_break == yaml_ANY_BREAK {
+ emitter.line_break = yaml_LN_BREAK
+ }
+
+ emitter.indent = -1
+ emitter.line = 0
+ emitter.column = 0
+ emitter.whitespace = true
+ emitter.indention = true
+
+ if emitter.encoding != yaml_UTF8_ENCODING {
+ if !yaml_emitter_write_bom(emitter) {
+ return false
+ }
+ }
+ emitter.state = yaml_EMIT_FIRST_DOCUMENT_START_STATE
+ return true
+}
+
+// Expect DOCUMENT-START or STREAM-END.
+func yaml_emitter_emit_document_start(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
+
+ if event.typ == yaml_DOCUMENT_START_EVENT {
+
+ if event.version_directive != nil {
+ if !yaml_emitter_analyze_version_directive(emitter, event.version_directive) {
+ return false
+ }
+ }
+
+ for i := 0; i < len(event.tag_directives); i++ {
+ tag_directive := &event.tag_directives[i]
+ if !yaml_emitter_analyze_tag_directive(emitter, tag_directive) {
+ return false
+ }
+ if !yaml_emitter_append_tag_directive(emitter, tag_directive, false) {
+ return false
+ }
+ }
+
+ for i := 0; i < len(default_tag_directives); i++ {
+ tag_directive := &default_tag_directives[i]
+ if !yaml_emitter_append_tag_directive(emitter, tag_directive, true) {
+ return false
+ }
+ }
+
+ implicit := event.implicit
+ if !first || emitter.canonical {
+ implicit = false
+ }
+
+ if emitter.open_ended && (event.version_directive != nil || len(event.tag_directives) > 0) {
+ if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
+ return false
+ }
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ }
+
+ if event.version_directive != nil {
+ implicit = false
+ if !yaml_emitter_write_indicator(emitter, []byte("%YAML"), true, false, false) {
+ return false
+ }
+ if !yaml_emitter_write_indicator(emitter, []byte("1.1"), true, false, false) {
+ return false
+ }
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ }
+
+ if len(event.tag_directives) > 0 {
+ implicit = false
+ for i := 0; i < len(event.tag_directives); i++ {
+ tag_directive := &event.tag_directives[i]
+ if !yaml_emitter_write_indicator(emitter, []byte("%TAG"), true, false, false) {
+ return false
+ }
+ if !yaml_emitter_write_tag_handle(emitter, tag_directive.handle) {
+ return false
+ }
+ if !yaml_emitter_write_tag_content(emitter, tag_directive.prefix, true) {
+ return false
+ }
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ }
+ }
+
+ if yaml_emitter_check_empty_document(emitter) {
+ implicit = false
+ }
+ if !implicit {
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ if !yaml_emitter_write_indicator(emitter, []byte("---"), true, false, false) {
+ return false
+ }
+ if emitter.canonical {
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ }
+ }
+
+ emitter.state = yaml_EMIT_DOCUMENT_CONTENT_STATE
+ return true
+ }
+
+ if event.typ == yaml_STREAM_END_EVENT {
+ if emitter.open_ended {
+ if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
+ return false
+ }
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ }
+ if !yaml_emitter_flush(emitter) {
+ return false
+ }
+ emitter.state = yaml_EMIT_END_STATE
+ return true
+ }
+
+ return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-START or STREAM-END")
+}
+
+// Expect the root node.
+func yaml_emitter_emit_document_content(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+ emitter.states = append(emitter.states, yaml_EMIT_DOCUMENT_END_STATE)
+ return yaml_emitter_emit_node(emitter, event, true, false, false, false)
+}
+
+// Expect DOCUMENT-END.
+func yaml_emitter_emit_document_end(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+ if event.typ != yaml_DOCUMENT_END_EVENT {
+ return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-END")
+ }
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ if !event.implicit {
+ // [Go] Allocate the slice elsewhere.
+ if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
+ return false
+ }
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ }
+ if !yaml_emitter_flush(emitter) {
+ return false
+ }
+ emitter.state = yaml_EMIT_DOCUMENT_START_STATE
+ emitter.tag_directives = emitter.tag_directives[:0]
+ return true
+}
+
+// Expect a flow item node.
+func yaml_emitter_emit_flow_sequence_item(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
+ if first {
+ if !yaml_emitter_write_indicator(emitter, []byte{'['}, true, true, false) {
+ return false
+ }
+ if !yaml_emitter_increase_indent(emitter, true, false) {
+ return false
+ }
+ emitter.flow_level++
+ }
+
+ if event.typ == yaml_SEQUENCE_END_EVENT {
+ emitter.flow_level--
+ emitter.indent = emitter.indents[len(emitter.indents)-1]
+ emitter.indents = emitter.indents[:len(emitter.indents)-1]
+ if emitter.canonical && !first {
+ if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
+ return false
+ }
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ }
+ if !yaml_emitter_write_indicator(emitter, []byte{']'}, false, false, false) {
+ return false
+ }
+ emitter.state = emitter.states[len(emitter.states)-1]
+ emitter.states = emitter.states[:len(emitter.states)-1]
+
+ return true
+ }
+
+ if !first {
+ if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
+ return false
+ }
+ }
+
+ if emitter.canonical || emitter.column > emitter.best_width {
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ }
+ emitter.states = append(emitter.states, yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE)
+ return yaml_emitter_emit_node(emitter, event, false, true, false, false)
+}
+
+// Expect a flow key node.
+func yaml_emitter_emit_flow_mapping_key(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
+ if first {
+ if !yaml_emitter_write_indicator(emitter, []byte{'{'}, true, true, false) {
+ return false
+ }
+ if !yaml_emitter_increase_indent(emitter, true, false) {
+ return false
+ }
+ emitter.flow_level++
+ }
+
+ if event.typ == yaml_MAPPING_END_EVENT {
+ emitter.flow_level--
+ emitter.indent = emitter.indents[len(emitter.indents)-1]
+ emitter.indents = emitter.indents[:len(emitter.indents)-1]
+ if emitter.canonical && !first {
+ if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
+ return false
+ }
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ }
+ if !yaml_emitter_write_indicator(emitter, []byte{'}'}, false, false, false) {
+ return false
+ }
+ emitter.state = emitter.states[len(emitter.states)-1]
+ emitter.states = emitter.states[:len(emitter.states)-1]
+ return true
+ }
+
+ if !first {
+ if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
+ return false
+ }
+ }
+ if emitter.canonical || emitter.column > emitter.best_width {
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ }
+
+ if !emitter.canonical && yaml_emitter_check_simple_key(emitter) {
+ emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE)
+ return yaml_emitter_emit_node(emitter, event, false, false, true, true)
+ }
+ if !yaml_emitter_write_indicator(emitter, []byte{'?'}, true, false, false) {
+ return false
+ }
+ emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_VALUE_STATE)
+ return yaml_emitter_emit_node(emitter, event, false, false, true, false)
+}
+
+// Expect a flow value node.
+func yaml_emitter_emit_flow_mapping_value(emitter *yaml_emitter_t, event *yaml_event_t, simple bool) bool {
+ if simple {
+ if !yaml_emitter_write_indicator(emitter, []byte{':'}, false, false, false) {
+ return false
+ }
+ } else {
+ if emitter.canonical || emitter.column > emitter.best_width {
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ }
+ if !yaml_emitter_write_indicator(emitter, []byte{':'}, true, false, false) {
+ return false
+ }
+ }
+ emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_KEY_STATE)
+ return yaml_emitter_emit_node(emitter, event, false, false, true, false)
+}
+
+// Expect a block item node.
+func yaml_emitter_emit_block_sequence_item(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
+ if first {
+ if !yaml_emitter_increase_indent(emitter, false, emitter.mapping_context && !emitter.indention) {
+ return false
+ }
+ }
+ if event.typ == yaml_SEQUENCE_END_EVENT {
+ emitter.indent = emitter.indents[len(emitter.indents)-1]
+ emitter.indents = emitter.indents[:len(emitter.indents)-1]
+ emitter.state = emitter.states[len(emitter.states)-1]
+ emitter.states = emitter.states[:len(emitter.states)-1]
+ return true
+ }
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ if !yaml_emitter_write_indicator(emitter, []byte{'-'}, true, false, true) {
+ return false
+ }
+ emitter.states = append(emitter.states, yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE)
+ return yaml_emitter_emit_node(emitter, event, false, true, false, false)
+}
+
+// Expect a block key node.
+func yaml_emitter_emit_block_mapping_key(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
+ if first {
+ if !yaml_emitter_increase_indent(emitter, false, false) {
+ return false
+ }
+ }
+ if event.typ == yaml_MAPPING_END_EVENT {
+ emitter.indent = emitter.indents[len(emitter.indents)-1]
+ emitter.indents = emitter.indents[:len(emitter.indents)-1]
+ emitter.state = emitter.states[len(emitter.states)-1]
+ emitter.states = emitter.states[:len(emitter.states)-1]
+ return true
+ }
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ if yaml_emitter_check_simple_key(emitter) {
+ emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE)
+ return yaml_emitter_emit_node(emitter, event, false, false, true, true)
+ }
+ if !yaml_emitter_write_indicator(emitter, []byte{'?'}, true, false, true) {
+ return false
+ }
+ emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_VALUE_STATE)
+ return yaml_emitter_emit_node(emitter, event, false, false, true, false)
+}
+
+// Expect a block value node.
+func yaml_emitter_emit_block_mapping_value(emitter *yaml_emitter_t, event *yaml_event_t, simple bool) bool {
+ if simple {
+ if !yaml_emitter_write_indicator(emitter, []byte{':'}, false, false, false) {
+ return false
+ }
+ } else {
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ if !yaml_emitter_write_indicator(emitter, []byte{':'}, true, false, true) {
+ return false
+ }
+ }
+ emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_KEY_STATE)
+ return yaml_emitter_emit_node(emitter, event, false, false, true, false)
+}
+
+// Expect a node.
+func yaml_emitter_emit_node(emitter *yaml_emitter_t, event *yaml_event_t,
+ root bool, sequence bool, mapping bool, simple_key bool) bool {
+
+ emitter.root_context = root
+ emitter.sequence_context = sequence
+ emitter.mapping_context = mapping
+ emitter.simple_key_context = simple_key
+
+ switch event.typ {
+ case yaml_ALIAS_EVENT:
+ return yaml_emitter_emit_alias(emitter, event)
+ case yaml_SCALAR_EVENT:
+ return yaml_emitter_emit_scalar(emitter, event)
+ case yaml_SEQUENCE_START_EVENT:
+ return yaml_emitter_emit_sequence_start(emitter, event)
+ case yaml_MAPPING_START_EVENT:
+ return yaml_emitter_emit_mapping_start(emitter, event)
+ default:
+ return yaml_emitter_set_emitter_error(emitter,
+ fmt.Sprintf("expected SCALAR, SEQUENCE-START, MAPPING-START, or ALIAS, but got %v", event.typ))
+ }
+}
+
+// Expect ALIAS.
+func yaml_emitter_emit_alias(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+ if !yaml_emitter_process_anchor(emitter) {
+ return false
+ }
+ emitter.state = emitter.states[len(emitter.states)-1]
+ emitter.states = emitter.states[:len(emitter.states)-1]
+ return true
+}
+
+// Expect SCALAR.
+func yaml_emitter_emit_scalar(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+ if !yaml_emitter_select_scalar_style(emitter, event) {
+ return false
+ }
+ if !yaml_emitter_process_anchor(emitter) {
+ return false
+ }
+ if !yaml_emitter_process_tag(emitter) {
+ return false
+ }
+ if !yaml_emitter_increase_indent(emitter, true, false) {
+ return false
+ }
+ if !yaml_emitter_process_scalar(emitter) {
+ return false
+ }
+ emitter.indent = emitter.indents[len(emitter.indents)-1]
+ emitter.indents = emitter.indents[:len(emitter.indents)-1]
+ emitter.state = emitter.states[len(emitter.states)-1]
+ emitter.states = emitter.states[:len(emitter.states)-1]
+ return true
+}
+
+// Expect SEQUENCE-START.
+func yaml_emitter_emit_sequence_start(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+ if !yaml_emitter_process_anchor(emitter) {
+ return false
+ }
+ if !yaml_emitter_process_tag(emitter) {
+ return false
+ }
+ if emitter.flow_level > 0 || emitter.canonical || event.sequence_style() == yaml_FLOW_SEQUENCE_STYLE ||
+ yaml_emitter_check_empty_sequence(emitter) {
+ emitter.state = yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE
+ } else {
+ emitter.state = yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE
+ }
+ return true
+}
+
+// Expect MAPPING-START.
+func yaml_emitter_emit_mapping_start(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+ if !yaml_emitter_process_anchor(emitter) {
+ return false
+ }
+ if !yaml_emitter_process_tag(emitter) {
+ return false
+ }
+ if emitter.flow_level > 0 || emitter.canonical || event.mapping_style() == yaml_FLOW_MAPPING_STYLE ||
+ yaml_emitter_check_empty_mapping(emitter) {
+ emitter.state = yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE
+ } else {
+ emitter.state = yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE
+ }
+ return true
+}
+
+// Check if the document content is an empty scalar.
+func yaml_emitter_check_empty_document(emitter *yaml_emitter_t) bool {
+ return false // [Go] Huh?
+}
+
+// Check if the next events represent an empty sequence.
+func yaml_emitter_check_empty_sequence(emitter *yaml_emitter_t) bool {
+ if len(emitter.events)-emitter.events_head < 2 {
+ return false
+ }
+ return emitter.events[emitter.events_head].typ == yaml_SEQUENCE_START_EVENT &&
+ emitter.events[emitter.events_head+1].typ == yaml_SEQUENCE_END_EVENT
+}
+
+// Check if the next events represent an empty mapping.
+func yaml_emitter_check_empty_mapping(emitter *yaml_emitter_t) bool {
+ if len(emitter.events)-emitter.events_head < 2 {
+ return false
+ }
+ return emitter.events[emitter.events_head].typ == yaml_MAPPING_START_EVENT &&
+ emitter.events[emitter.events_head+1].typ == yaml_MAPPING_END_EVENT
+}
+
+// Check if the next node can be expressed as a simple key.
+func yaml_emitter_check_simple_key(emitter *yaml_emitter_t) bool {
+ length := 0
+ switch emitter.events[emitter.events_head].typ {
+ case yaml_ALIAS_EVENT:
+ length += len(emitter.anchor_data.anchor)
+ case yaml_SCALAR_EVENT:
+ if emitter.scalar_data.multiline {
+ return false
+ }
+ length += len(emitter.anchor_data.anchor) +
+ len(emitter.tag_data.handle) +
+ len(emitter.tag_data.suffix) +
+ len(emitter.scalar_data.value)
+ case yaml_SEQUENCE_START_EVENT:
+ if !yaml_emitter_check_empty_sequence(emitter) {
+ return false
+ }
+ length += len(emitter.anchor_data.anchor) +
+ len(emitter.tag_data.handle) +
+ len(emitter.tag_data.suffix)
+ case yaml_MAPPING_START_EVENT:
+ if !yaml_emitter_check_empty_mapping(emitter) {
+ return false
+ }
+ length += len(emitter.anchor_data.anchor) +
+ len(emitter.tag_data.handle) +
+ len(emitter.tag_data.suffix)
+ default:
+ return false
+ }
+ return length <= 128
+}
+
+// Determine an acceptable scalar style.
+func yaml_emitter_select_scalar_style(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+
+ no_tag := len(emitter.tag_data.handle) == 0 && len(emitter.tag_data.suffix) == 0
+ if no_tag && !event.implicit && !event.quoted_implicit {
+ return yaml_emitter_set_emitter_error(emitter, "neither tag nor implicit flags are specified")
+ }
+
+ style := event.scalar_style()
+ if style == yaml_ANY_SCALAR_STYLE {
+ style = yaml_PLAIN_SCALAR_STYLE
+ }
+ if emitter.canonical {
+ style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+ }
+ if emitter.simple_key_context && emitter.scalar_data.multiline {
+ style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+ }
+
+ if style == yaml_PLAIN_SCALAR_STYLE {
+ if emitter.flow_level > 0 && !emitter.scalar_data.flow_plain_allowed ||
+ emitter.flow_level == 0 && !emitter.scalar_data.block_plain_allowed {
+ style = yaml_SINGLE_QUOTED_SCALAR_STYLE
+ }
+ if len(emitter.scalar_data.value) == 0 && (emitter.flow_level > 0 || emitter.simple_key_context) {
+ style = yaml_SINGLE_QUOTED_SCALAR_STYLE
+ }
+ if no_tag && !event.implicit {
+ style = yaml_SINGLE_QUOTED_SCALAR_STYLE
+ }
+ }
+ if style == yaml_SINGLE_QUOTED_SCALAR_STYLE {
+ if !emitter.scalar_data.single_quoted_allowed {
+ style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+ }
+ }
+ if style == yaml_LITERAL_SCALAR_STYLE || style == yaml_FOLDED_SCALAR_STYLE {
+ if !emitter.scalar_data.block_allowed || emitter.flow_level > 0 || emitter.simple_key_context {
+ style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+ }
+ }
+
+ if no_tag && !event.quoted_implicit && style != yaml_PLAIN_SCALAR_STYLE {
+ emitter.tag_data.handle = []byte{'!'}
+ }
+ emitter.scalar_data.style = style
+ return true
+}
+
+// Write an anchor.
+func yaml_emitter_process_anchor(emitter *yaml_emitter_t) bool {
+ if emitter.anchor_data.anchor == nil {
+ return true
+ }
+ c := []byte{'&'}
+ if emitter.anchor_data.alias {
+ c[0] = '*'
+ }
+ if !yaml_emitter_write_indicator(emitter, c, true, false, false) {
+ return false
+ }
+ return yaml_emitter_write_anchor(emitter, emitter.anchor_data.anchor)
+}
+
+// Write a tag.
+func yaml_emitter_process_tag(emitter *yaml_emitter_t) bool {
+ if len(emitter.tag_data.handle) == 0 && len(emitter.tag_data.suffix) == 0 {
+ return true
+ }
+ if len(emitter.tag_data.handle) > 0 {
+ if !yaml_emitter_write_tag_handle(emitter, emitter.tag_data.handle) {
+ return false
+ }
+ if len(emitter.tag_data.suffix) > 0 {
+ if !yaml_emitter_write_tag_content(emitter, emitter.tag_data.suffix, false) {
+ return false
+ }
+ }
+ } else {
+ // [Go] Allocate these slices elsewhere.
+ if !yaml_emitter_write_indicator(emitter, []byte("!<"), true, false, false) {
+ return false
+ }
+ if !yaml_emitter_write_tag_content(emitter, emitter.tag_data.suffix, false) {
+ return false
+ }
+ if !yaml_emitter_write_indicator(emitter, []byte{'>'}, false, false, false) {
+ return false
+ }
+ }
+ return true
+}
+
+// Write a scalar.
+func yaml_emitter_process_scalar(emitter *yaml_emitter_t) bool {
+ switch emitter.scalar_data.style {
+ case yaml_PLAIN_SCALAR_STYLE:
+ return yaml_emitter_write_plain_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context)
+
+ case yaml_SINGLE_QUOTED_SCALAR_STYLE:
+ return yaml_emitter_write_single_quoted_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context)
+
+ case yaml_DOUBLE_QUOTED_SCALAR_STYLE:
+ return yaml_emitter_write_double_quoted_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context)
+
+ case yaml_LITERAL_SCALAR_STYLE:
+ return yaml_emitter_write_literal_scalar(emitter, emitter.scalar_data.value)
+
+ case yaml_FOLDED_SCALAR_STYLE:
+ return yaml_emitter_write_folded_scalar(emitter, emitter.scalar_data.value)
+ }
+ panic("unknown scalar style")
+}
+
+// Check if a %YAML directive is valid.
+func yaml_emitter_analyze_version_directive(emitter *yaml_emitter_t, version_directive *yaml_version_directive_t) bool {
+ if version_directive.major != 1 || version_directive.minor != 1 {
+ return yaml_emitter_set_emitter_error(emitter, "incompatible %YAML directive")
+ }
+ return true
+}
+
+// Check if a %TAG directive is valid.
+func yaml_emitter_analyze_tag_directive(emitter *yaml_emitter_t, tag_directive *yaml_tag_directive_t) bool {
+ handle := tag_directive.handle
+ prefix := tag_directive.prefix
+ if len(handle) == 0 {
+ return yaml_emitter_set_emitter_error(emitter, "tag handle must not be empty")
+ }
+ if handle[0] != '!' {
+ return yaml_emitter_set_emitter_error(emitter, "tag handle must start with '!'")
+ }
+ if handle[len(handle)-1] != '!' {
+ return yaml_emitter_set_emitter_error(emitter, "tag handle must end with '!'")
+ }
+ for i := 1; i < len(handle)-1; i += width(handle[i]) {
+ if !is_alpha(handle, i) {
+ return yaml_emitter_set_emitter_error(emitter, "tag handle must contain alphanumerical characters only")
+ }
+ }
+ if len(prefix) == 0 {
+ return yaml_emitter_set_emitter_error(emitter, "tag prefix must not be empty")
+ }
+ return true
+}
+
+// Check if an anchor is valid.
+func yaml_emitter_analyze_anchor(emitter *yaml_emitter_t, anchor []byte, alias bool) bool {
+ if len(anchor) == 0 {
+ problem := "anchor value must not be empty"
+ if alias {
+ problem = "alias value must not be empty"
+ }
+ return yaml_emitter_set_emitter_error(emitter, problem)
+ }
+ for i := 0; i < len(anchor); i += width(anchor[i]) {
+ if !is_alpha(anchor, i) {
+ problem := "anchor value must contain alphanumerical characters only"
+ if alias {
+ problem = "alias value must contain alphanumerical characters only"
+ }
+ return yaml_emitter_set_emitter_error(emitter, problem)
+ }
+ }
+ emitter.anchor_data.anchor = anchor
+ emitter.anchor_data.alias = alias
+ return true
+}
+
+// Check if a tag is valid.
+func yaml_emitter_analyze_tag(emitter *yaml_emitter_t, tag []byte) bool {
+ if len(tag) == 0 {
+ return yaml_emitter_set_emitter_error(emitter, "tag value must not be empty")
+ }
+ for i := 0; i < len(emitter.tag_directives); i++ {
+ tag_directive := &emitter.tag_directives[i]
+ if bytes.HasPrefix(tag, tag_directive.prefix) {
+ emitter.tag_data.handle = tag_directive.handle
+ emitter.tag_data.suffix = tag[len(tag_directive.prefix):]
+ return true
+ }
+ }
+ emitter.tag_data.suffix = tag
+ return true
+}
+
+// Check if a scalar is valid.
+func yaml_emitter_analyze_scalar(emitter *yaml_emitter_t, value []byte) bool {
+ var (
+ block_indicators = false
+ flow_indicators = false
+ line_breaks = false
+ special_characters = false
+
+ leading_space = false
+ leading_break = false
+ trailing_space = false
+ trailing_break = false
+ break_space = false
+ space_break = false
+
+ preceded_by_whitespace = false
+ followed_by_whitespace = false
+ previous_space = false
+ previous_break = false
+ )
+
+ emitter.scalar_data.value = value
+
+ if len(value) == 0 {
+ emitter.scalar_data.multiline = false
+ emitter.scalar_data.flow_plain_allowed = false
+ emitter.scalar_data.block_plain_allowed = true
+ emitter.scalar_data.single_quoted_allowed = true
+ emitter.scalar_data.block_allowed = false
+ return true
+ }
+
+ if len(value) >= 3 && ((value[0] == '-' && value[1] == '-' && value[2] == '-') || (value[0] == '.' && value[1] == '.' && value[2] == '.')) {
+ block_indicators = true
+ flow_indicators = true
+ }
+
+ preceded_by_whitespace = true
+ for i, w := 0, 0; i < len(value); i += w {
+ w = width(value[i])
+ followed_by_whitespace = i+w >= len(value) || is_blank(value, i+w)
+
+ if i == 0 {
+ switch value[i] {
+ case '#', ',', '[', ']', '{', '}', '&', '*', '!', '|', '>', '\'', '"', '%', '@', '`':
+ flow_indicators = true
+ block_indicators = true
+ case '?', ':':
+ flow_indicators = true
+ if followed_by_whitespace {
+ block_indicators = true
+ }
+ case '-':
+ if followed_by_whitespace {
+ flow_indicators = true
+ block_indicators = true
+ }
+ }
+ } else {
+ switch value[i] {
+ case ',', '?', '[', ']', '{', '}':
+ flow_indicators = true
+ case ':':
+ flow_indicators = true
+ if followed_by_whitespace {
+ block_indicators = true
+ }
+ case '#':
+ if preceded_by_whitespace {
+ flow_indicators = true
+ block_indicators = true
+ }
+ }
+ }
+
+ if !is_printable(value, i) || !is_ascii(value, i) && !emitter.unicode {
+ special_characters = true
+ }
+ if is_space(value, i) {
+ if i == 0 {
+ leading_space = true
+ }
+ if i+width(value[i]) == len(value) {
+ trailing_space = true
+ }
+ if previous_break {
+ break_space = true
+ }
+ previous_space = true
+ previous_break = false
+ } else if is_break(value, i) {
+ line_breaks = true
+ if i == 0 {
+ leading_break = true
+ }
+ if i+width(value[i]) == len(value) {
+ trailing_break = true
+ }
+ if previous_space {
+ space_break = true
+ }
+ previous_space = false
+ previous_break = true
+ } else {
+ previous_space = false
+ previous_break = false
+ }
+
+ // [Go]: Why 'z'? Couldn't be the end of the string as that's the loop condition.
+ preceded_by_whitespace = is_blankz(value, i)
+ }
+
+ emitter.scalar_data.multiline = line_breaks
+ emitter.scalar_data.flow_plain_allowed = true
+ emitter.scalar_data.block_plain_allowed = true
+ emitter.scalar_data.single_quoted_allowed = true
+ emitter.scalar_data.block_allowed = true
+
+ if leading_space || leading_break || trailing_space || trailing_break {
+ emitter.scalar_data.flow_plain_allowed = false
+ emitter.scalar_data.block_plain_allowed = false
+ }
+ if trailing_space {
+ emitter.scalar_data.block_allowed = false
+ }
+ if break_space {
+ emitter.scalar_data.flow_plain_allowed = false
+ emitter.scalar_data.block_plain_allowed = false
+ emitter.scalar_data.single_quoted_allowed = false
+ }
+ if space_break || special_characters {
+ emitter.scalar_data.flow_plain_allowed = false
+ emitter.scalar_data.block_plain_allowed = false
+ emitter.scalar_data.single_quoted_allowed = false
+ emitter.scalar_data.block_allowed = false
+ }
+ if line_breaks {
+ emitter.scalar_data.flow_plain_allowed = false
+ emitter.scalar_data.block_plain_allowed = false
+ }
+ if flow_indicators {
+ emitter.scalar_data.flow_plain_allowed = false
+ }
+ if block_indicators {
+ emitter.scalar_data.block_plain_allowed = false
+ }
+ return true
+}
+
+// Check if the event data is valid.
+func yaml_emitter_analyze_event(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+
+ emitter.anchor_data.anchor = nil
+ emitter.tag_data.handle = nil
+ emitter.tag_data.suffix = nil
+ emitter.scalar_data.value = nil
+
+ switch event.typ {
+ case yaml_ALIAS_EVENT:
+ if !yaml_emitter_analyze_anchor(emitter, event.anchor, true) {
+ return false
+ }
+
+ case yaml_SCALAR_EVENT:
+ if len(event.anchor) > 0 {
+ if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) {
+ return false
+ }
+ }
+ if len(event.tag) > 0 && (emitter.canonical || (!event.implicit && !event.quoted_implicit)) {
+ if !yaml_emitter_analyze_tag(emitter, event.tag) {
+ return false
+ }
+ }
+ if !yaml_emitter_analyze_scalar(emitter, event.value) {
+ return false
+ }
+
+ case yaml_SEQUENCE_START_EVENT:
+ if len(event.anchor) > 0 {
+ if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) {
+ return false
+ }
+ }
+ if len(event.tag) > 0 && (emitter.canonical || !event.implicit) {
+ if !yaml_emitter_analyze_tag(emitter, event.tag) {
+ return false
+ }
+ }
+
+ case yaml_MAPPING_START_EVENT:
+ if len(event.anchor) > 0 {
+ if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) {
+ return false
+ }
+ }
+ if len(event.tag) > 0 && (emitter.canonical || !event.implicit) {
+ if !yaml_emitter_analyze_tag(emitter, event.tag) {
+ return false
+ }
+ }
+ }
+ return true
+}
+
+// Write the BOM character.
+func yaml_emitter_write_bom(emitter *yaml_emitter_t) bool {
+ if !flush(emitter) {
+ return false
+ }
+ pos := emitter.buffer_pos
+ emitter.buffer[pos+0] = '\xEF'
+ emitter.buffer[pos+1] = '\xBB'
+ emitter.buffer[pos+2] = '\xBF'
+ emitter.buffer_pos += 3
+ return true
+}
+
+func yaml_emitter_write_indent(emitter *yaml_emitter_t) bool {
+ indent := emitter.indent
+ if indent < 0 {
+ indent = 0
+ }
+ if !emitter.indention || emitter.column > indent || (emitter.column == indent && !emitter.whitespace) {
+ if !put_break(emitter) {
+ return false
+ }
+ }
+ for emitter.column < indent {
+ if !put(emitter, ' ') {
+ return false
+ }
+ }
+ emitter.whitespace = true
+ emitter.indention = true
+ return true
+}
+
+func yaml_emitter_write_indicator(emitter *yaml_emitter_t, indicator []byte, need_whitespace, is_whitespace, is_indention bool) bool {
+ if need_whitespace && !emitter.whitespace {
+ if !put(emitter, ' ') {
+ return false
+ }
+ }
+ if !write_all(emitter, indicator) {
+ return false
+ }
+ emitter.whitespace = is_whitespace
+ emitter.indention = (emitter.indention && is_indention)
+ emitter.open_ended = false
+ return true
+}
+
+func yaml_emitter_write_anchor(emitter *yaml_emitter_t, value []byte) bool {
+ if !write_all(emitter, value) {
+ return false
+ }
+ emitter.whitespace = false
+ emitter.indention = false
+ return true
+}
+
+func yaml_emitter_write_tag_handle(emitter *yaml_emitter_t, value []byte) bool {
+ if !emitter.whitespace {
+ if !put(emitter, ' ') {
+ return false
+ }
+ }
+ if !write_all(emitter, value) {
+ return false
+ }
+ emitter.whitespace = false
+ emitter.indention = false
+ return true
+}
+
+func yaml_emitter_write_tag_content(emitter *yaml_emitter_t, value []byte, need_whitespace bool) bool {
+ if need_whitespace && !emitter.whitespace {
+ if !put(emitter, ' ') {
+ return false
+ }
+ }
+ for i := 0; i < len(value); {
+ var must_write bool
+ switch value[i] {
+ case ';', '/', '?', ':', '@', '&', '=', '+', '$', ',', '_', '.', '~', '*', '\'', '(', ')', '[', ']':
+ must_write = true
+ default:
+ must_write = is_alpha(value, i)
+ }
+ if must_write {
+ if !write(emitter, value, &i) {
+ return false
+ }
+ } else {
+ w := width(value[i])
+ for k := 0; k < w; k++ {
+ octet := value[i]
+ i++
+ if !put(emitter, '%') {
+ return false
+ }
+
+ c := octet >> 4
+ if c < 10 {
+ c += '0'
+ } else {
+ c += 'A' - 10
+ }
+ if !put(emitter, c) {
+ return false
+ }
+
+ c = octet & 0x0f
+ if c < 10 {
+ c += '0'
+ } else {
+ c += 'A' - 10
+ }
+ if !put(emitter, c) {
+ return false
+ }
+ }
+ }
+ }
+ emitter.whitespace = false
+ emitter.indention = false
+ return true
+}
+
+func yaml_emitter_write_plain_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool {
+ if !emitter.whitespace {
+ if !put(emitter, ' ') {
+ return false
+ }
+ }
+
+ spaces := false
+ breaks := false
+ for i := 0; i < len(value); {
+ if is_space(value, i) {
+ if allow_breaks && !spaces && emitter.column > emitter.best_width && !is_space(value, i+1) {
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ i += width(value[i])
+ } else {
+ if !write(emitter, value, &i) {
+ return false
+ }
+ }
+ spaces = true
+ } else if is_break(value, i) {
+ if !breaks && value[i] == '\n' {
+ if !put_break(emitter) {
+ return false
+ }
+ }
+ if !write_break(emitter, value, &i) {
+ return false
+ }
+ emitter.indention = true
+ breaks = true
+ } else {
+ if breaks {
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ }
+ if !write(emitter, value, &i) {
+ return false
+ }
+ emitter.indention = false
+ spaces = false
+ breaks = false
+ }
+ }
+
+ emitter.whitespace = false
+ emitter.indention = false
+ if emitter.root_context {
+ emitter.open_ended = true
+ }
+
+ return true
+}
+
+func yaml_emitter_write_single_quoted_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool {
+
+ if !yaml_emitter_write_indicator(emitter, []byte{'\''}, true, false, false) {
+ return false
+ }
+
+ spaces := false
+ breaks := false
+ for i := 0; i < len(value); {
+ if is_space(value, i) {
+ if allow_breaks && !spaces && emitter.column > emitter.best_width && i > 0 && i < len(value)-1 && !is_space(value, i+1) {
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ i += width(value[i])
+ } else {
+ if !write(emitter, value, &i) {
+ return false
+ }
+ }
+ spaces = true
+ } else if is_break(value, i) {
+ if !breaks && value[i] == '\n' {
+ if !put_break(emitter) {
+ return false
+ }
+ }
+ if !write_break(emitter, value, &i) {
+ return false
+ }
+ emitter.indention = true
+ breaks = true
+ } else {
+ if breaks {
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ }
+ if value[i] == '\'' {
+ if !put(emitter, '\'') {
+ return false
+ }
+ }
+ if !write(emitter, value, &i) {
+ return false
+ }
+ emitter.indention = false
+ spaces = false
+ breaks = false
+ }
+ }
+ if !yaml_emitter_write_indicator(emitter, []byte{'\''}, false, false, false) {
+ return false
+ }
+ emitter.whitespace = false
+ emitter.indention = false
+ return true
+}
+
+func yaml_emitter_write_double_quoted_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool {
+ spaces := false
+ if !yaml_emitter_write_indicator(emitter, []byte{'"'}, true, false, false) {
+ return false
+ }
+
+ for i := 0; i < len(value); {
+ if !is_printable(value, i) || (!emitter.unicode && !is_ascii(value, i)) ||
+ is_bom(value, i) || is_break(value, i) ||
+ value[i] == '"' || value[i] == '\\' {
+
+ octet := value[i]
+
+ var w int
+ var v rune
+ switch {
+ case octet&0x80 == 0x00:
+ w, v = 1, rune(octet&0x7F)
+ case octet&0xE0 == 0xC0:
+ w, v = 2, rune(octet&0x1F)
+ case octet&0xF0 == 0xE0:
+ w, v = 3, rune(octet&0x0F)
+ case octet&0xF8 == 0xF0:
+ w, v = 4, rune(octet&0x07)
+ }
+ for k := 1; k < w; k++ {
+ octet = value[i+k]
+ v = (v << 6) + (rune(octet) & 0x3F)
+ }
+ i += w
+
+ if !put(emitter, '\\') {
+ return false
+ }
+
+ var ok bool
+ switch v {
+ case 0x00:
+ ok = put(emitter, '0')
+ case 0x07:
+ ok = put(emitter, 'a')
+ case 0x08:
+ ok = put(emitter, 'b')
+ case 0x09:
+ ok = put(emitter, 't')
+ case 0x0A:
+ ok = put(emitter, 'n')
+ case 0x0b:
+ ok = put(emitter, 'v')
+ case 0x0c:
+ ok = put(emitter, 'f')
+ case 0x0d:
+ ok = put(emitter, 'r')
+ case 0x1b:
+ ok = put(emitter, 'e')
+ case 0x22:
+ ok = put(emitter, '"')
+ case 0x5c:
+ ok = put(emitter, '\\')
+ case 0x85:
+ ok = put(emitter, 'N')
+ case 0xA0:
+ ok = put(emitter, '_')
+ case 0x2028:
+ ok = put(emitter, 'L')
+ case 0x2029:
+ ok = put(emitter, 'P')
+ default:
+ if v <= 0xFF {
+ ok = put(emitter, 'x')
+ w = 2
+ } else if v <= 0xFFFF {
+ ok = put(emitter, 'u')
+ w = 4
+ } else {
+ ok = put(emitter, 'U')
+ w = 8
+ }
+ for k := (w - 1) * 4; ok && k >= 0; k -= 4 {
+ digit := byte((v >> uint(k)) & 0x0F)
+ if digit < 10 {
+ ok = put(emitter, digit+'0')
+ } else {
+ ok = put(emitter, digit+'A'-10)
+ }
+ }
+ }
+ if !ok {
+ return false
+ }
+ spaces = false
+ } else if is_space(value, i) {
+ if allow_breaks && !spaces && emitter.column > emitter.best_width && i > 0 && i < len(value)-1 {
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ if is_space(value, i+1) {
+ if !put(emitter, '\\') {
+ return false
+ }
+ }
+ i += width(value[i])
+ } else if !write(emitter, value, &i) {
+ return false
+ }
+ spaces = true
+ } else {
+ if !write(emitter, value, &i) {
+ return false
+ }
+ spaces = false
+ }
+ }
+ if !yaml_emitter_write_indicator(emitter, []byte{'"'}, false, false, false) {
+ return false
+ }
+ emitter.whitespace = false
+ emitter.indention = false
+ return true
+}
+
+func yaml_emitter_write_block_scalar_hints(emitter *yaml_emitter_t, value []byte) bool {
+ if is_space(value, 0) || is_break(value, 0) {
+ indent_hint := []byte{'0' + byte(emitter.best_indent)}
+ if !yaml_emitter_write_indicator(emitter, indent_hint, false, false, false) {
+ return false
+ }
+ }
+
+ emitter.open_ended = false
+
+ var chomp_hint [1]byte
+ if len(value) == 0 {
+ chomp_hint[0] = '-'
+ } else {
+ i := len(value) - 1
+ for value[i]&0xC0 == 0x80 {
+ i--
+ }
+ if !is_break(value, i) {
+ chomp_hint[0] = '-'
+ } else if i == 0 {
+ chomp_hint[0] = '+'
+ emitter.open_ended = true
+ } else {
+ i--
+ for value[i]&0xC0 == 0x80 {
+ i--
+ }
+ if is_break(value, i) {
+ chomp_hint[0] = '+'
+ emitter.open_ended = true
+ }
+ }
+ }
+ if chomp_hint[0] != 0 {
+ if !yaml_emitter_write_indicator(emitter, chomp_hint[:], false, false, false) {
+ return false
+ }
+ }
+ return true
+}
+
+func yaml_emitter_write_literal_scalar(emitter *yaml_emitter_t, value []byte) bool {
+ if !yaml_emitter_write_indicator(emitter, []byte{'|'}, true, false, false) {
+ return false
+ }
+ if !yaml_emitter_write_block_scalar_hints(emitter, value) {
+ return false
+ }
+ if !put_break(emitter) {
+ return false
+ }
+ emitter.indention = true
+ emitter.whitespace = true
+ breaks := true
+ for i := 0; i < len(value); {
+ if is_break(value, i) {
+ if !write_break(emitter, value, &i) {
+ return false
+ }
+ emitter.indention = true
+ breaks = true
+ } else {
+ if breaks {
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ }
+ if !write(emitter, value, &i) {
+ return false
+ }
+ emitter.indention = false
+ breaks = false
+ }
+ }
+
+ return true
+}
+
+func yaml_emitter_write_folded_scalar(emitter *yaml_emitter_t, value []byte) bool {
+ if !yaml_emitter_write_indicator(emitter, []byte{'>'}, true, false, false) {
+ return false
+ }
+ if !yaml_emitter_write_block_scalar_hints(emitter, value) {
+ return false
+ }
+
+ if !put_break(emitter) {
+ return false
+ }
+ emitter.indention = true
+ emitter.whitespace = true
+
+ breaks := true
+ leading_spaces := true
+ for i := 0; i < len(value); {
+ if is_break(value, i) {
+ if !breaks && !leading_spaces && value[i] == '\n' {
+ k := 0
+ for is_break(value, k) {
+ k += width(value[k])
+ }
+ if !is_blankz(value, k) {
+ if !put_break(emitter) {
+ return false
+ }
+ }
+ }
+ if !write_break(emitter, value, &i) {
+ return false
+ }
+ emitter.indention = true
+ breaks = true
+ } else {
+ if breaks {
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ leading_spaces = is_blank(value, i)
+ }
+ if !breaks && is_space(value, i) && !is_space(value, i+1) && emitter.column > emitter.best_width {
+ if !yaml_emitter_write_indent(emitter) {
+ return false
+ }
+ i += width(value[i])
+ } else {
+ if !write(emitter, value, &i) {
+ return false
+ }
+ }
+ emitter.indention = false
+ breaks = false
+ }
+ }
+ return true
+}
diff --git a/vendor/gopkg.in/yaml.v2/encode.go b/vendor/gopkg.in/yaml.v2/encode.go
new file mode 100644
index 0000000..0ee738e
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/encode.go
@@ -0,0 +1,390 @@
+package yaml
+
+import (
+ "encoding"
+ "fmt"
+ "io"
+ "reflect"
+ "regexp"
+ "sort"
+ "strconv"
+ "strings"
+ "time"
+ "unicode/utf8"
+)
+
+// jsonNumber is the interface of the encoding/json.Number datatype.
+// Repeating the interface here avoids a dependency on encoding/json, and also
+// supports other libraries like jsoniter, which use a similar datatype with
+// the same interface. Detecting this interface is useful when dealing with
+// structures containing json.Number, which is a string under the hood. The
+// encoder should prefer the use of Int64(), Float64() and string(), in that
+// order, when encoding this type.
+type jsonNumber interface {
+ Float64() (float64, error)
+ Int64() (int64, error)
+ String() string
+}
+
+type encoder struct {
+ emitter yaml_emitter_t
+ event yaml_event_t
+ out []byte
+ flow bool
+ // doneInit holds whether the initial stream_start_event has been
+ // emitted.
+ doneInit bool
+}
+
+func newEncoder() *encoder {
+ e := &encoder{}
+ yaml_emitter_initialize(&e.emitter)
+ yaml_emitter_set_output_string(&e.emitter, &e.out)
+ yaml_emitter_set_unicode(&e.emitter, true)
+ return e
+}
+
+func newEncoderWithWriter(w io.Writer) *encoder {
+ e := &encoder{}
+ yaml_emitter_initialize(&e.emitter)
+ yaml_emitter_set_output_writer(&e.emitter, w)
+ yaml_emitter_set_unicode(&e.emitter, true)
+ return e
+}
+
+func (e *encoder) init() {
+ if e.doneInit {
+ return
+ }
+ yaml_stream_start_event_initialize(&e.event, yaml_UTF8_ENCODING)
+ e.emit()
+ e.doneInit = true
+}
+
+func (e *encoder) finish() {
+ e.emitter.open_ended = false
+ yaml_stream_end_event_initialize(&e.event)
+ e.emit()
+}
+
+func (e *encoder) destroy() {
+ yaml_emitter_delete(&e.emitter)
+}
+
+func (e *encoder) emit() {
+ // This will internally delete the e.event value.
+ e.must(yaml_emitter_emit(&e.emitter, &e.event))
+}
+
+func (e *encoder) must(ok bool) {
+ if !ok {
+ msg := e.emitter.problem
+ if msg == "" {
+ msg = "unknown problem generating YAML content"
+ }
+ failf("%s", msg)
+ }
+}
+
+func (e *encoder) marshalDoc(tag string, in reflect.Value) {
+ e.init()
+ yaml_document_start_event_initialize(&e.event, nil, nil, true)
+ e.emit()
+ e.marshal(tag, in)
+ yaml_document_end_event_initialize(&e.event, true)
+ e.emit()
+}
+
+func (e *encoder) marshal(tag string, in reflect.Value) {
+ if !in.IsValid() || in.Kind() == reflect.Ptr && in.IsNil() {
+ e.nilv()
+ return
+ }
+ iface := in.Interface()
+ switch m := iface.(type) {
+ case jsonNumber:
+ integer, err := m.Int64()
+ if err == nil {
+ // In this case the json.Number is a valid int64
+ in = reflect.ValueOf(integer)
+ break
+ }
+ float, err := m.Float64()
+ if err == nil {
+ // In this case the json.Number is a valid float64
+ in = reflect.ValueOf(float)
+ break
+ }
+ // fallback case - no number could be obtained
+ in = reflect.ValueOf(m.String())
+ case time.Time, *time.Time:
+ // Although time.Time implements TextMarshaler,
+ // we don't want to treat it as a string for YAML
+ // purposes because YAML has special support for
+ // timestamps.
+ case Marshaler:
+ v, err := m.MarshalYAML()
+ if err != nil {
+ fail(err)
+ }
+ if v == nil {
+ e.nilv()
+ return
+ }
+ in = reflect.ValueOf(v)
+ case encoding.TextMarshaler:
+ text, err := m.MarshalText()
+ if err != nil {
+ fail(err)
+ }
+ in = reflect.ValueOf(string(text))
+ case nil:
+ e.nilv()
+ return
+ }
+ switch in.Kind() {
+ case reflect.Interface:
+ e.marshal(tag, in.Elem())
+ case reflect.Map:
+ e.mapv(tag, in)
+ case reflect.Ptr:
+ if in.Type() == ptrTimeType {
+ e.timev(tag, in.Elem())
+ } else {
+ e.marshal(tag, in.Elem())
+ }
+ case reflect.Struct:
+ if in.Type() == timeType {
+ e.timev(tag, in)
+ } else {
+ e.structv(tag, in)
+ }
+ case reflect.Slice, reflect.Array:
+ if in.Type().Elem() == mapItemType {
+ e.itemsv(tag, in)
+ } else {
+ e.slicev(tag, in)
+ }
+ case reflect.String:
+ e.stringv(tag, in)
+ case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+ if in.Type() == durationType {
+ e.stringv(tag, reflect.ValueOf(iface.(time.Duration).String()))
+ } else {
+ e.intv(tag, in)
+ }
+ case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+ e.uintv(tag, in)
+ case reflect.Float32, reflect.Float64:
+ e.floatv(tag, in)
+ case reflect.Bool:
+ e.boolv(tag, in)
+ default:
+ panic("cannot marshal type: " + in.Type().String())
+ }
+}
+
+func (e *encoder) mapv(tag string, in reflect.Value) {
+ e.mappingv(tag, func() {
+ keys := keyList(in.MapKeys())
+ sort.Sort(keys)
+ for _, k := range keys {
+ e.marshal("", k)
+ e.marshal("", in.MapIndex(k))
+ }
+ })
+}
+
+func (e *encoder) itemsv(tag string, in reflect.Value) {
+ e.mappingv(tag, func() {
+ slice := in.Convert(reflect.TypeOf([]MapItem{})).Interface().([]MapItem)
+ for _, item := range slice {
+ e.marshal("", reflect.ValueOf(item.Key))
+ e.marshal("", reflect.ValueOf(item.Value))
+ }
+ })
+}
+
+func (e *encoder) structv(tag string, in reflect.Value) {
+ sinfo, err := getStructInfo(in.Type())
+ if err != nil {
+ panic(err)
+ }
+ e.mappingv(tag, func() {
+ for _, info := range sinfo.FieldsList {
+ var value reflect.Value
+ if info.Inline == nil {
+ value = in.Field(info.Num)
+ } else {
+ value = in.FieldByIndex(info.Inline)
+ }
+ if info.OmitEmpty && isZero(value) {
+ continue
+ }
+ e.marshal("", reflect.ValueOf(info.Key))
+ e.flow = info.Flow
+ e.marshal("", value)
+ }
+ if sinfo.InlineMap >= 0 {
+ m := in.Field(sinfo.InlineMap)
+ if m.Len() > 0 {
+ e.flow = false
+ keys := keyList(m.MapKeys())
+ sort.Sort(keys)
+ for _, k := range keys {
+ if _, found := sinfo.FieldsMap[k.String()]; found {
+ panic(fmt.Sprintf("Can't have key %q in inlined map; conflicts with struct field", k.String()))
+ }
+ e.marshal("", k)
+ e.flow = false
+ e.marshal("", m.MapIndex(k))
+ }
+ }
+ }
+ })
+}
+
+func (e *encoder) mappingv(tag string, f func()) {
+ implicit := tag == ""
+ style := yaml_BLOCK_MAPPING_STYLE
+ if e.flow {
+ e.flow = false
+ style = yaml_FLOW_MAPPING_STYLE
+ }
+ yaml_mapping_start_event_initialize(&e.event, nil, []byte(tag), implicit, style)
+ e.emit()
+ f()
+ yaml_mapping_end_event_initialize(&e.event)
+ e.emit()
+}
+
+func (e *encoder) slicev(tag string, in reflect.Value) {
+ implicit := tag == ""
+ style := yaml_BLOCK_SEQUENCE_STYLE
+ if e.flow {
+ e.flow = false
+ style = yaml_FLOW_SEQUENCE_STYLE
+ }
+ e.must(yaml_sequence_start_event_initialize(&e.event, nil, []byte(tag), implicit, style))
+ e.emit()
+ n := in.Len()
+ for i := 0; i < n; i++ {
+ e.marshal("", in.Index(i))
+ }
+ e.must(yaml_sequence_end_event_initialize(&e.event))
+ e.emit()
+}
+
+// isBase60 returns whether s is in base 60 notation as defined in YAML 1.1.
+//
+// The base 60 float notation in YAML 1.1 is a terrible idea and is unsupported
+// in YAML 1.2 and by this package, but these should be marshalled quoted for
+// the time being for compatibility with other parsers.
+func isBase60Float(s string) (result bool) {
+ // Fast path.
+ if s == "" {
+ return false
+ }
+ c := s[0]
+ if !(c == '+' || c == '-' || c >= '0' && c <= '9') || strings.IndexByte(s, ':') < 0 {
+ return false
+ }
+ // Do the full match.
+ return base60float.MatchString(s)
+}
+
+// From http://yaml.org/type/float.html, except the regular expression there
+// is bogus. In practice parsers do not enforce the "\.[0-9_]*" suffix.
+var base60float = regexp.MustCompile(`^[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+(?:\.[0-9_]*)?$`)
+
+func (e *encoder) stringv(tag string, in reflect.Value) {
+ var style yaml_scalar_style_t
+ s := in.String()
+ canUsePlain := true
+ switch {
+ case !utf8.ValidString(s):
+ if tag == yaml_BINARY_TAG {
+ failf("explicitly tagged !!binary data must be base64-encoded")
+ }
+ if tag != "" {
+ failf("cannot marshal invalid UTF-8 data as %s", shortTag(tag))
+ }
+ // It can't be encoded directly as YAML so use a binary tag
+ // and encode it as base64.
+ tag = yaml_BINARY_TAG
+ s = encodeBase64(s)
+ case tag == "":
+ // Check to see if it would resolve to a specific
+ // tag when encoded unquoted. If it doesn't,
+ // there's no need to quote it.
+ rtag, _ := resolve("", s)
+ canUsePlain = rtag == yaml_STR_TAG && !isBase60Float(s)
+ }
+ // Note: it's possible for user code to emit invalid YAML
+ // if they explicitly specify a tag and a string containing
+ // text that's incompatible with that tag.
+ switch {
+ case strings.Contains(s, "\n"):
+ style = yaml_LITERAL_SCALAR_STYLE
+ case canUsePlain:
+ style = yaml_PLAIN_SCALAR_STYLE
+ default:
+ style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+ }
+ e.emitScalar(s, "", tag, style)
+}
+
+func (e *encoder) boolv(tag string, in reflect.Value) {
+ var s string
+ if in.Bool() {
+ s = "true"
+ } else {
+ s = "false"
+ }
+ e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) intv(tag string, in reflect.Value) {
+ s := strconv.FormatInt(in.Int(), 10)
+ e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) uintv(tag string, in reflect.Value) {
+ s := strconv.FormatUint(in.Uint(), 10)
+ e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) timev(tag string, in reflect.Value) {
+ t := in.Interface().(time.Time)
+ s := t.Format(time.RFC3339Nano)
+ e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) floatv(tag string, in reflect.Value) {
+ // Issue #352: When formatting, use the precision of the underlying value
+ precision := 64
+ if in.Kind() == reflect.Float32 {
+ precision = 32
+ }
+
+ s := strconv.FormatFloat(in.Float(), 'g', -1, precision)
+ switch s {
+ case "+Inf":
+ s = ".inf"
+ case "-Inf":
+ s = "-.inf"
+ case "NaN":
+ s = ".nan"
+ }
+ e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) nilv() {
+ e.emitScalar("null", "", "", yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) emitScalar(value, anchor, tag string, style yaml_scalar_style_t) {
+ implicit := tag == ""
+ e.must(yaml_scalar_event_initialize(&e.event, []byte(anchor), []byte(tag), []byte(value), implicit, implicit, style))
+ e.emit()
+}
diff --git a/vendor/gopkg.in/yaml.v2/go.mod b/vendor/gopkg.in/yaml.v2/go.mod
new file mode 100644
index 0000000..1934e87
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/go.mod
@@ -0,0 +1,5 @@
+module "gopkg.in/yaml.v2"
+
+require (
+ "gopkg.in/check.v1" v0.0.0-20161208181325-20d25e280405
+)
diff --git a/vendor/gopkg.in/yaml.v2/parserc.go b/vendor/gopkg.in/yaml.v2/parserc.go
new file mode 100644
index 0000000..81d05df
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/parserc.go
@@ -0,0 +1,1095 @@
+package yaml
+
+import (
+ "bytes"
+)
+
+// The parser implements the following grammar:
+//
+// stream ::= STREAM-START implicit_document? explicit_document* STREAM-END
+// implicit_document ::= block_node DOCUMENT-END*
+// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+// block_node_or_indentless_sequence ::=
+// ALIAS
+// | properties (block_content | indentless_block_sequence)?
+// | block_content
+// | indentless_block_sequence
+// block_node ::= ALIAS
+// | properties block_content?
+// | block_content
+// flow_node ::= ALIAS
+// | properties flow_content?
+// | flow_content
+// properties ::= TAG ANCHOR? | ANCHOR TAG?
+// block_content ::= block_collection | flow_collection | SCALAR
+// flow_content ::= flow_collection | SCALAR
+// block_collection ::= block_sequence | block_mapping
+// flow_collection ::= flow_sequence | flow_mapping
+// block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
+// indentless_sequence ::= (BLOCK-ENTRY block_node?)+
+// block_mapping ::= BLOCK-MAPPING_START
+// ((KEY block_node_or_indentless_sequence?)?
+// (VALUE block_node_or_indentless_sequence?)?)*
+// BLOCK-END
+// flow_sequence ::= FLOW-SEQUENCE-START
+// (flow_sequence_entry FLOW-ENTRY)*
+// flow_sequence_entry?
+// FLOW-SEQUENCE-END
+// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+// flow_mapping ::= FLOW-MAPPING-START
+// (flow_mapping_entry FLOW-ENTRY)*
+// flow_mapping_entry?
+// FLOW-MAPPING-END
+// flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+
+// Peek the next token in the token queue.
+func peek_token(parser *yaml_parser_t) *yaml_token_t {
+ if parser.token_available || yaml_parser_fetch_more_tokens(parser) {
+ return &parser.tokens[parser.tokens_head]
+ }
+ return nil
+}
+
+// Remove the next token from the queue (must be called after peek_token).
+func skip_token(parser *yaml_parser_t) {
+ parser.token_available = false
+ parser.tokens_parsed++
+ parser.stream_end_produced = parser.tokens[parser.tokens_head].typ == yaml_STREAM_END_TOKEN
+ parser.tokens_head++
+}
+
+// Get the next event.
+func yaml_parser_parse(parser *yaml_parser_t, event *yaml_event_t) bool {
+ // Erase the event object.
+ *event = yaml_event_t{}
+
+ // No events after the end of the stream or error.
+ if parser.stream_end_produced || parser.error != yaml_NO_ERROR || parser.state == yaml_PARSE_END_STATE {
+ return true
+ }
+
+ // Generate the next event.
+ return yaml_parser_state_machine(parser, event)
+}
+
+// Set parser error.
+func yaml_parser_set_parser_error(parser *yaml_parser_t, problem string, problem_mark yaml_mark_t) bool {
+ parser.error = yaml_PARSER_ERROR
+ parser.problem = problem
+ parser.problem_mark = problem_mark
+ return false
+}
+
+func yaml_parser_set_parser_error_context(parser *yaml_parser_t, context string, context_mark yaml_mark_t, problem string, problem_mark yaml_mark_t) bool {
+ parser.error = yaml_PARSER_ERROR
+ parser.context = context
+ parser.context_mark = context_mark
+ parser.problem = problem
+ parser.problem_mark = problem_mark
+ return false
+}
+
+// State dispatcher.
+func yaml_parser_state_machine(parser *yaml_parser_t, event *yaml_event_t) bool {
+ //trace("yaml_parser_state_machine", "state:", parser.state.String())
+
+ switch parser.state {
+ case yaml_PARSE_STREAM_START_STATE:
+ return yaml_parser_parse_stream_start(parser, event)
+
+ case yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE:
+ return yaml_parser_parse_document_start(parser, event, true)
+
+ case yaml_PARSE_DOCUMENT_START_STATE:
+ return yaml_parser_parse_document_start(parser, event, false)
+
+ case yaml_PARSE_DOCUMENT_CONTENT_STATE:
+ return yaml_parser_parse_document_content(parser, event)
+
+ case yaml_PARSE_DOCUMENT_END_STATE:
+ return yaml_parser_parse_document_end(parser, event)
+
+ case yaml_PARSE_BLOCK_NODE_STATE:
+ return yaml_parser_parse_node(parser, event, true, false)
+
+ case yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE:
+ return yaml_parser_parse_node(parser, event, true, true)
+
+ case yaml_PARSE_FLOW_NODE_STATE:
+ return yaml_parser_parse_node(parser, event, false, false)
+
+ case yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE:
+ return yaml_parser_parse_block_sequence_entry(parser, event, true)
+
+ case yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE:
+ return yaml_parser_parse_block_sequence_entry(parser, event, false)
+
+ case yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE:
+ return yaml_parser_parse_indentless_sequence_entry(parser, event)
+
+ case yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE:
+ return yaml_parser_parse_block_mapping_key(parser, event, true)
+
+ case yaml_PARSE_BLOCK_MAPPING_KEY_STATE:
+ return yaml_parser_parse_block_mapping_key(parser, event, false)
+
+ case yaml_PARSE_BLOCK_MAPPING_VALUE_STATE:
+ return yaml_parser_parse_block_mapping_value(parser, event)
+
+ case yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE:
+ return yaml_parser_parse_flow_sequence_entry(parser, event, true)
+
+ case yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE:
+ return yaml_parser_parse_flow_sequence_entry(parser, event, false)
+
+ case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE:
+ return yaml_parser_parse_flow_sequence_entry_mapping_key(parser, event)
+
+ case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE:
+ return yaml_parser_parse_flow_sequence_entry_mapping_value(parser, event)
+
+ case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE:
+ return yaml_parser_parse_flow_sequence_entry_mapping_end(parser, event)
+
+ case yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE:
+ return yaml_parser_parse_flow_mapping_key(parser, event, true)
+
+ case yaml_PARSE_FLOW_MAPPING_KEY_STATE:
+ return yaml_parser_parse_flow_mapping_key(parser, event, false)
+
+ case yaml_PARSE_FLOW_MAPPING_VALUE_STATE:
+ return yaml_parser_parse_flow_mapping_value(parser, event, false)
+
+ case yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE:
+ return yaml_parser_parse_flow_mapping_value(parser, event, true)
+
+ default:
+ panic("invalid parser state")
+ }
+}
+
+// Parse the production:
+// stream ::= STREAM-START implicit_document? explicit_document* STREAM-END
+// ************
+func yaml_parser_parse_stream_start(parser *yaml_parser_t, event *yaml_event_t) bool {
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ != yaml_STREAM_START_TOKEN {
+ return yaml_parser_set_parser_error(parser, "did not find expected <stream-start>", token.start_mark)
+ }
+ parser.state = yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE
+ *event = yaml_event_t{
+ typ: yaml_STREAM_START_EVENT,
+ start_mark: token.start_mark,
+ end_mark: token.end_mark,
+ encoding: token.encoding,
+ }
+ skip_token(parser)
+ return true
+}
+
+// Parse the productions:
+// implicit_document ::= block_node DOCUMENT-END*
+// *
+// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+// *************************
+func yaml_parser_parse_document_start(parser *yaml_parser_t, event *yaml_event_t, implicit bool) bool {
+
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+
+ // Parse extra document end indicators.
+ if !implicit {
+ for token.typ == yaml_DOCUMENT_END_TOKEN {
+ skip_token(parser)
+ token = peek_token(parser)
+ if token == nil {
+ return false
+ }
+ }
+ }
+
+ if implicit && token.typ != yaml_VERSION_DIRECTIVE_TOKEN &&
+ token.typ != yaml_TAG_DIRECTIVE_TOKEN &&
+ token.typ != yaml_DOCUMENT_START_TOKEN &&
+ token.typ != yaml_STREAM_END_TOKEN {
+ // Parse an implicit document.
+ if !yaml_parser_process_directives(parser, nil, nil) {
+ return false
+ }
+ parser.states = append(parser.states, yaml_PARSE_DOCUMENT_END_STATE)
+ parser.state = yaml_PARSE_BLOCK_NODE_STATE
+
+ *event = yaml_event_t{
+ typ: yaml_DOCUMENT_START_EVENT,
+ start_mark: token.start_mark,
+ end_mark: token.end_mark,
+ }
+
+ } else if token.typ != yaml_STREAM_END_TOKEN {
+ // Parse an explicit document.
+ var version_directive *yaml_version_directive_t
+ var tag_directives []yaml_tag_directive_t
+ start_mark := token.start_mark
+ if !yaml_parser_process_directives(parser, &version_directive, &tag_directives) {
+ return false
+ }
+ token = peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ != yaml_DOCUMENT_START_TOKEN {
+ yaml_parser_set_parser_error(parser,
+ "did not find expected <document start>", token.start_mark)
+ return false
+ }
+ parser.states = append(parser.states, yaml_PARSE_DOCUMENT_END_STATE)
+ parser.state = yaml_PARSE_DOCUMENT_CONTENT_STATE
+ end_mark := token.end_mark
+
+ *event = yaml_event_t{
+ typ: yaml_DOCUMENT_START_EVENT,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ version_directive: version_directive,
+ tag_directives: tag_directives,
+ implicit: false,
+ }
+ skip_token(parser)
+
+ } else {
+ // Parse the stream end.
+ parser.state = yaml_PARSE_END_STATE
+ *event = yaml_event_t{
+ typ: yaml_STREAM_END_EVENT,
+ start_mark: token.start_mark,
+ end_mark: token.end_mark,
+ }
+ skip_token(parser)
+ }
+
+ return true
+}
+
+// Parse the productions:
+// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+// ***********
+//
+func yaml_parser_parse_document_content(parser *yaml_parser_t, event *yaml_event_t) bool {
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ == yaml_VERSION_DIRECTIVE_TOKEN ||
+ token.typ == yaml_TAG_DIRECTIVE_TOKEN ||
+ token.typ == yaml_DOCUMENT_START_TOKEN ||
+ token.typ == yaml_DOCUMENT_END_TOKEN ||
+ token.typ == yaml_STREAM_END_TOKEN {
+ parser.state = parser.states[len(parser.states)-1]
+ parser.states = parser.states[:len(parser.states)-1]
+ return yaml_parser_process_empty_scalar(parser, event,
+ token.start_mark)
+ }
+ return yaml_parser_parse_node(parser, event, true, false)
+}
+
+// Parse the productions:
+// implicit_document ::= block_node DOCUMENT-END*
+// *************
+// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+//
+func yaml_parser_parse_document_end(parser *yaml_parser_t, event *yaml_event_t) bool {
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+
+ start_mark := token.start_mark
+ end_mark := token.start_mark
+
+ implicit := true
+ if token.typ == yaml_DOCUMENT_END_TOKEN {
+ end_mark = token.end_mark
+ skip_token(parser)
+ implicit = false
+ }
+
+ parser.tag_directives = parser.tag_directives[:0]
+
+ parser.state = yaml_PARSE_DOCUMENT_START_STATE
+ *event = yaml_event_t{
+ typ: yaml_DOCUMENT_END_EVENT,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ implicit: implicit,
+ }
+ return true
+}
+
+// Parse the productions:
+// block_node_or_indentless_sequence ::=
+// ALIAS
+// *****
+// | properties (block_content | indentless_block_sequence)?
+// ********** *
+// | block_content | indentless_block_sequence
+// *
+// block_node ::= ALIAS
+// *****
+// | properties block_content?
+// ********** *
+// | block_content
+// *
+// flow_node ::= ALIAS
+// *****
+// | properties flow_content?
+// ********** *
+// | flow_content
+// *
+// properties ::= TAG ANCHOR? | ANCHOR TAG?
+// *************************
+// block_content ::= block_collection | flow_collection | SCALAR
+// ******
+// flow_content ::= flow_collection | SCALAR
+// ******
+func yaml_parser_parse_node(parser *yaml_parser_t, event *yaml_event_t, block, indentless_sequence bool) bool {
+ //defer trace("yaml_parser_parse_node", "block:", block, "indentless_sequence:", indentless_sequence)()
+
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+
+ if token.typ == yaml_ALIAS_TOKEN {
+ parser.state = parser.states[len(parser.states)-1]
+ parser.states = parser.states[:len(parser.states)-1]
+ *event = yaml_event_t{
+ typ: yaml_ALIAS_EVENT,
+ start_mark: token.start_mark,
+ end_mark: token.end_mark,
+ anchor: token.value,
+ }
+ skip_token(parser)
+ return true
+ }
+
+ start_mark := token.start_mark
+ end_mark := token.start_mark
+
+ var tag_token bool
+ var tag_handle, tag_suffix, anchor []byte
+ var tag_mark yaml_mark_t
+ if token.typ == yaml_ANCHOR_TOKEN {
+ anchor = token.value
+ start_mark = token.start_mark
+ end_mark = token.end_mark
+ skip_token(parser)
+ token = peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ == yaml_TAG_TOKEN {
+ tag_token = true
+ tag_handle = token.value
+ tag_suffix = token.suffix
+ tag_mark = token.start_mark
+ end_mark = token.end_mark
+ skip_token(parser)
+ token = peek_token(parser)
+ if token == nil {
+ return false
+ }
+ }
+ } else if token.typ == yaml_TAG_TOKEN {
+ tag_token = true
+ tag_handle = token.value
+ tag_suffix = token.suffix
+ start_mark = token.start_mark
+ tag_mark = token.start_mark
+ end_mark = token.end_mark
+ skip_token(parser)
+ token = peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ == yaml_ANCHOR_TOKEN {
+ anchor = token.value
+ end_mark = token.end_mark
+ skip_token(parser)
+ token = peek_token(parser)
+ if token == nil {
+ return false
+ }
+ }
+ }
+
+ var tag []byte
+ if tag_token {
+ if len(tag_handle) == 0 {
+ tag = tag_suffix
+ tag_suffix = nil
+ } else {
+ for i := range parser.tag_directives {
+ if bytes.Equal(parser.tag_directives[i].handle, tag_handle) {
+ tag = append([]byte(nil), parser.tag_directives[i].prefix...)
+ tag = append(tag, tag_suffix...)
+ break
+ }
+ }
+ if len(tag) == 0 {
+ yaml_parser_set_parser_error_context(parser,
+ "while parsing a node", start_mark,
+ "found undefined tag handle", tag_mark)
+ return false
+ }
+ }
+ }
+
+ implicit := len(tag) == 0
+ if indentless_sequence && token.typ == yaml_BLOCK_ENTRY_TOKEN {
+ end_mark = token.end_mark
+ parser.state = yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE
+ *event = yaml_event_t{
+ typ: yaml_SEQUENCE_START_EVENT,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ anchor: anchor,
+ tag: tag,
+ implicit: implicit,
+ style: yaml_style_t(yaml_BLOCK_SEQUENCE_STYLE),
+ }
+ return true
+ }
+ if token.typ == yaml_SCALAR_TOKEN {
+ var plain_implicit, quoted_implicit bool
+ end_mark = token.end_mark
+ if (len(tag) == 0 && token.style == yaml_PLAIN_SCALAR_STYLE) || (len(tag) == 1 && tag[0] == '!') {
+ plain_implicit = true
+ } else if len(tag) == 0 {
+ quoted_implicit = true
+ }
+ parser.state = parser.states[len(parser.states)-1]
+ parser.states = parser.states[:len(parser.states)-1]
+
+ *event = yaml_event_t{
+ typ: yaml_SCALAR_EVENT,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ anchor: anchor,
+ tag: tag,
+ value: token.value,
+ implicit: plain_implicit,
+ quoted_implicit: quoted_implicit,
+ style: yaml_style_t(token.style),
+ }
+ skip_token(parser)
+ return true
+ }
+ if token.typ == yaml_FLOW_SEQUENCE_START_TOKEN {
+ // [Go] Some of the events below can be merged as they differ only on style.
+ end_mark = token.end_mark
+ parser.state = yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE
+ *event = yaml_event_t{
+ typ: yaml_SEQUENCE_START_EVENT,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ anchor: anchor,
+ tag: tag,
+ implicit: implicit,
+ style: yaml_style_t(yaml_FLOW_SEQUENCE_STYLE),
+ }
+ return true
+ }
+ if token.typ == yaml_FLOW_MAPPING_START_TOKEN {
+ end_mark = token.end_mark
+ parser.state = yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE
+ *event = yaml_event_t{
+ typ: yaml_MAPPING_START_EVENT,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ anchor: anchor,
+ tag: tag,
+ implicit: implicit,
+ style: yaml_style_t(yaml_FLOW_MAPPING_STYLE),
+ }
+ return true
+ }
+ if block && token.typ == yaml_BLOCK_SEQUENCE_START_TOKEN {
+ end_mark = token.end_mark
+ parser.state = yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE
+ *event = yaml_event_t{
+ typ: yaml_SEQUENCE_START_EVENT,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ anchor: anchor,
+ tag: tag,
+ implicit: implicit,
+ style: yaml_style_t(yaml_BLOCK_SEQUENCE_STYLE),
+ }
+ return true
+ }
+ if block && token.typ == yaml_BLOCK_MAPPING_START_TOKEN {
+ end_mark = token.end_mark
+ parser.state = yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE
+ *event = yaml_event_t{
+ typ: yaml_MAPPING_START_EVENT,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ anchor: anchor,
+ tag: tag,
+ implicit: implicit,
+ style: yaml_style_t(yaml_BLOCK_MAPPING_STYLE),
+ }
+ return true
+ }
+ if len(anchor) > 0 || len(tag) > 0 {
+ parser.state = parser.states[len(parser.states)-1]
+ parser.states = parser.states[:len(parser.states)-1]
+
+ *event = yaml_event_t{
+ typ: yaml_SCALAR_EVENT,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ anchor: anchor,
+ tag: tag,
+ implicit: implicit,
+ quoted_implicit: false,
+ style: yaml_style_t(yaml_PLAIN_SCALAR_STYLE),
+ }
+ return true
+ }
+
+ context := "while parsing a flow node"
+ if block {
+ context = "while parsing a block node"
+ }
+ yaml_parser_set_parser_error_context(parser, context, start_mark,
+ "did not find expected node content", token.start_mark)
+ return false
+}
+
+// Parse the productions:
+// block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
+// ******************** *********** * *********
+//
+func yaml_parser_parse_block_sequence_entry(parser *yaml_parser_t, event *yaml_event_t, first bool) bool {
+ if first {
+ token := peek_token(parser)
+ parser.marks = append(parser.marks, token.start_mark)
+ skip_token(parser)
+ }
+
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+
+ if token.typ == yaml_BLOCK_ENTRY_TOKEN {
+ mark := token.end_mark
+ skip_token(parser)
+ token = peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ != yaml_BLOCK_ENTRY_TOKEN && token.typ != yaml_BLOCK_END_TOKEN {
+ parser.states = append(parser.states, yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE)
+ return yaml_parser_parse_node(parser, event, true, false)
+ } else {
+ parser.state = yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE
+ return yaml_parser_process_empty_scalar(parser, event, mark)
+ }
+ }
+ if token.typ == yaml_BLOCK_END_TOKEN {
+ parser.state = parser.states[len(parser.states)-1]
+ parser.states = parser.states[:len(parser.states)-1]
+ parser.marks = parser.marks[:len(parser.marks)-1]
+
+ *event = yaml_event_t{
+ typ: yaml_SEQUENCE_END_EVENT,
+ start_mark: token.start_mark,
+ end_mark: token.end_mark,
+ }
+
+ skip_token(parser)
+ return true
+ }
+
+ context_mark := parser.marks[len(parser.marks)-1]
+ parser.marks = parser.marks[:len(parser.marks)-1]
+ return yaml_parser_set_parser_error_context(parser,
+ "while parsing a block collection", context_mark,
+ "did not find expected '-' indicator", token.start_mark)
+}
+
+// Parse the productions:
+// indentless_sequence ::= (BLOCK-ENTRY block_node?)+
+// *********** *
+func yaml_parser_parse_indentless_sequence_entry(parser *yaml_parser_t, event *yaml_event_t) bool {
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+
+ if token.typ == yaml_BLOCK_ENTRY_TOKEN {
+ mark := token.end_mark
+ skip_token(parser)
+ token = peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ != yaml_BLOCK_ENTRY_TOKEN &&
+ token.typ != yaml_KEY_TOKEN &&
+ token.typ != yaml_VALUE_TOKEN &&
+ token.typ != yaml_BLOCK_END_TOKEN {
+ parser.states = append(parser.states, yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE)
+ return yaml_parser_parse_node(parser, event, true, false)
+ }
+ parser.state = yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE
+ return yaml_parser_process_empty_scalar(parser, event, mark)
+ }
+ parser.state = parser.states[len(parser.states)-1]
+ parser.states = parser.states[:len(parser.states)-1]
+
+ *event = yaml_event_t{
+ typ: yaml_SEQUENCE_END_EVENT,
+ start_mark: token.start_mark,
+ end_mark: token.start_mark, // [Go] Shouldn't this be token.end_mark?
+ }
+ return true
+}
+
+// Parse the productions:
+// block_mapping ::= BLOCK-MAPPING_START
+// *******************
+// ((KEY block_node_or_indentless_sequence?)?
+// *** *
+// (VALUE block_node_or_indentless_sequence?)?)*
+//
+// BLOCK-END
+// *********
+//
+func yaml_parser_parse_block_mapping_key(parser *yaml_parser_t, event *yaml_event_t, first bool) bool {
+ if first {
+ token := peek_token(parser)
+ parser.marks = append(parser.marks, token.start_mark)
+ skip_token(parser)
+ }
+
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+
+ if token.typ == yaml_KEY_TOKEN {
+ mark := token.end_mark
+ skip_token(parser)
+ token = peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ != yaml_KEY_TOKEN &&
+ token.typ != yaml_VALUE_TOKEN &&
+ token.typ != yaml_BLOCK_END_TOKEN {
+ parser.states = append(parser.states, yaml_PARSE_BLOCK_MAPPING_VALUE_STATE)
+ return yaml_parser_parse_node(parser, event, true, true)
+ } else {
+ parser.state = yaml_PARSE_BLOCK_MAPPING_VALUE_STATE
+ return yaml_parser_process_empty_scalar(parser, event, mark)
+ }
+ } else if token.typ == yaml_BLOCK_END_TOKEN {
+ parser.state = parser.states[len(parser.states)-1]
+ parser.states = parser.states[:len(parser.states)-1]
+ parser.marks = parser.marks[:len(parser.marks)-1]
+ *event = yaml_event_t{
+ typ: yaml_MAPPING_END_EVENT,
+ start_mark: token.start_mark,
+ end_mark: token.end_mark,
+ }
+ skip_token(parser)
+ return true
+ }
+
+ context_mark := parser.marks[len(parser.marks)-1]
+ parser.marks = parser.marks[:len(parser.marks)-1]
+ return yaml_parser_set_parser_error_context(parser,
+ "while parsing a block mapping", context_mark,
+ "did not find expected key", token.start_mark)
+}
+
+// Parse the productions:
+// block_mapping ::= BLOCK-MAPPING_START
+//
+// ((KEY block_node_or_indentless_sequence?)?
+//
+// (VALUE block_node_or_indentless_sequence?)?)*
+// ***** *
+// BLOCK-END
+//
+//
+func yaml_parser_parse_block_mapping_value(parser *yaml_parser_t, event *yaml_event_t) bool {
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ == yaml_VALUE_TOKEN {
+ mark := token.end_mark
+ skip_token(parser)
+ token = peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ != yaml_KEY_TOKEN &&
+ token.typ != yaml_VALUE_TOKEN &&
+ token.typ != yaml_BLOCK_END_TOKEN {
+ parser.states = append(parser.states, yaml_PARSE_BLOCK_MAPPING_KEY_STATE)
+ return yaml_parser_parse_node(parser, event, true, true)
+ }
+ parser.state = yaml_PARSE_BLOCK_MAPPING_KEY_STATE
+ return yaml_parser_process_empty_scalar(parser, event, mark)
+ }
+ parser.state = yaml_PARSE_BLOCK_MAPPING_KEY_STATE
+ return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
+}
+
+// Parse the productions:
+// flow_sequence ::= FLOW-SEQUENCE-START
+// *******************
+// (flow_sequence_entry FLOW-ENTRY)*
+// * **********
+// flow_sequence_entry?
+// *
+// FLOW-SEQUENCE-END
+// *****************
+// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+// *
+//
+func yaml_parser_parse_flow_sequence_entry(parser *yaml_parser_t, event *yaml_event_t, first bool) bool {
+ if first {
+ token := peek_token(parser)
+ parser.marks = append(parser.marks, token.start_mark)
+ skip_token(parser)
+ }
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ != yaml_FLOW_SEQUENCE_END_TOKEN {
+ if !first {
+ if token.typ == yaml_FLOW_ENTRY_TOKEN {
+ skip_token(parser)
+ token = peek_token(parser)
+ if token == nil {
+ return false
+ }
+ } else {
+ context_mark := parser.marks[len(parser.marks)-1]
+ parser.marks = parser.marks[:len(parser.marks)-1]
+ return yaml_parser_set_parser_error_context(parser,
+ "while parsing a flow sequence", context_mark,
+ "did not find expected ',' or ']'", token.start_mark)
+ }
+ }
+
+ if token.typ == yaml_KEY_TOKEN {
+ parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE
+ *event = yaml_event_t{
+ typ: yaml_MAPPING_START_EVENT,
+ start_mark: token.start_mark,
+ end_mark: token.end_mark,
+ implicit: true,
+ style: yaml_style_t(yaml_FLOW_MAPPING_STYLE),
+ }
+ skip_token(parser)
+ return true
+ } else if token.typ != yaml_FLOW_SEQUENCE_END_TOKEN {
+ parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE)
+ return yaml_parser_parse_node(parser, event, false, false)
+ }
+ }
+
+ parser.state = parser.states[len(parser.states)-1]
+ parser.states = parser.states[:len(parser.states)-1]
+ parser.marks = parser.marks[:len(parser.marks)-1]
+
+ *event = yaml_event_t{
+ typ: yaml_SEQUENCE_END_EVENT,
+ start_mark: token.start_mark,
+ end_mark: token.end_mark,
+ }
+
+ skip_token(parser)
+ return true
+}
+
+//
+// Parse the productions:
+// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+// *** *
+//
+func yaml_parser_parse_flow_sequence_entry_mapping_key(parser *yaml_parser_t, event *yaml_event_t) bool {
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ != yaml_VALUE_TOKEN &&
+ token.typ != yaml_FLOW_ENTRY_TOKEN &&
+ token.typ != yaml_FLOW_SEQUENCE_END_TOKEN {
+ parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE)
+ return yaml_parser_parse_node(parser, event, false, false)
+ }
+ mark := token.end_mark
+ skip_token(parser)
+ parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE
+ return yaml_parser_process_empty_scalar(parser, event, mark)
+}
+
+// Parse the productions:
+// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+// ***** *
+//
+func yaml_parser_parse_flow_sequence_entry_mapping_value(parser *yaml_parser_t, event *yaml_event_t) bool {
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ == yaml_VALUE_TOKEN {
+ skip_token(parser)
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ != yaml_FLOW_ENTRY_TOKEN && token.typ != yaml_FLOW_SEQUENCE_END_TOKEN {
+ parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE)
+ return yaml_parser_parse_node(parser, event, false, false)
+ }
+ }
+ parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE
+ return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
+}
+
+// Parse the productions:
+// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+// *
+//
+func yaml_parser_parse_flow_sequence_entry_mapping_end(parser *yaml_parser_t, event *yaml_event_t) bool {
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+ parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE
+ *event = yaml_event_t{
+ typ: yaml_MAPPING_END_EVENT,
+ start_mark: token.start_mark,
+ end_mark: token.start_mark, // [Go] Shouldn't this be end_mark?
+ }
+ return true
+}
+
+// Parse the productions:
+// flow_mapping ::= FLOW-MAPPING-START
+// ******************
+// (flow_mapping_entry FLOW-ENTRY)*
+// * **********
+// flow_mapping_entry?
+// ******************
+// FLOW-MAPPING-END
+// ****************
+// flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+// * *** *
+//
+func yaml_parser_parse_flow_mapping_key(parser *yaml_parser_t, event *yaml_event_t, first bool) bool {
+ if first {
+ token := peek_token(parser)
+ parser.marks = append(parser.marks, token.start_mark)
+ skip_token(parser)
+ }
+
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+
+ if token.typ != yaml_FLOW_MAPPING_END_TOKEN {
+ if !first {
+ if token.typ == yaml_FLOW_ENTRY_TOKEN {
+ skip_token(parser)
+ token = peek_token(parser)
+ if token == nil {
+ return false
+ }
+ } else {
+ context_mark := parser.marks[len(parser.marks)-1]
+ parser.marks = parser.marks[:len(parser.marks)-1]
+ return yaml_parser_set_parser_error_context(parser,
+ "while parsing a flow mapping", context_mark,
+ "did not find expected ',' or '}'", token.start_mark)
+ }
+ }
+
+ if token.typ == yaml_KEY_TOKEN {
+ skip_token(parser)
+ token = peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ != yaml_VALUE_TOKEN &&
+ token.typ != yaml_FLOW_ENTRY_TOKEN &&
+ token.typ != yaml_FLOW_MAPPING_END_TOKEN {
+ parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_VALUE_STATE)
+ return yaml_parser_parse_node(parser, event, false, false)
+ } else {
+ parser.state = yaml_PARSE_FLOW_MAPPING_VALUE_STATE
+ return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
+ }
+ } else if token.typ != yaml_FLOW_MAPPING_END_TOKEN {
+ parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE)
+ return yaml_parser_parse_node(parser, event, false, false)
+ }
+ }
+
+ parser.state = parser.states[len(parser.states)-1]
+ parser.states = parser.states[:len(parser.states)-1]
+ parser.marks = parser.marks[:len(parser.marks)-1]
+ *event = yaml_event_t{
+ typ: yaml_MAPPING_END_EVENT,
+ start_mark: token.start_mark,
+ end_mark: token.end_mark,
+ }
+ skip_token(parser)
+ return true
+}
+
+// Parse the productions:
+// flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+// * ***** *
+//
+func yaml_parser_parse_flow_mapping_value(parser *yaml_parser_t, event *yaml_event_t, empty bool) bool {
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if empty {
+ parser.state = yaml_PARSE_FLOW_MAPPING_KEY_STATE
+ return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
+ }
+ if token.typ == yaml_VALUE_TOKEN {
+ skip_token(parser)
+ token = peek_token(parser)
+ if token == nil {
+ return false
+ }
+ if token.typ != yaml_FLOW_ENTRY_TOKEN && token.typ != yaml_FLOW_MAPPING_END_TOKEN {
+ parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_KEY_STATE)
+ return yaml_parser_parse_node(parser, event, false, false)
+ }
+ }
+ parser.state = yaml_PARSE_FLOW_MAPPING_KEY_STATE
+ return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
+}
+
+// Generate an empty scalar event.
+func yaml_parser_process_empty_scalar(parser *yaml_parser_t, event *yaml_event_t, mark yaml_mark_t) bool {
+ *event = yaml_event_t{
+ typ: yaml_SCALAR_EVENT,
+ start_mark: mark,
+ end_mark: mark,
+ value: nil, // Empty
+ implicit: true,
+ style: yaml_style_t(yaml_PLAIN_SCALAR_STYLE),
+ }
+ return true
+}
+
+var default_tag_directives = []yaml_tag_directive_t{
+ {[]byte("!"), []byte("!")},
+ {[]byte("!!"), []byte("tag:yaml.org,2002:")},
+}
+
+// Parse directives.
+func yaml_parser_process_directives(parser *yaml_parser_t,
+ version_directive_ref **yaml_version_directive_t,
+ tag_directives_ref *[]yaml_tag_directive_t) bool {
+
+ var version_directive *yaml_version_directive_t
+ var tag_directives []yaml_tag_directive_t
+
+ token := peek_token(parser)
+ if token == nil {
+ return false
+ }
+
+ for token.typ == yaml_VERSION_DIRECTIVE_TOKEN || token.typ == yaml_TAG_DIRECTIVE_TOKEN {
+ if token.typ == yaml_VERSION_DIRECTIVE_TOKEN {
+ if version_directive != nil {
+ yaml_parser_set_parser_error(parser,
+ "found duplicate %YAML directive", token.start_mark)
+ return false
+ }
+ if token.major != 1 || token.minor != 1 {
+ yaml_parser_set_parser_error(parser,
+ "found incompatible YAML document", token.start_mark)
+ return false
+ }
+ version_directive = &yaml_version_directive_t{
+ major: token.major,
+ minor: token.minor,
+ }
+ } else if token.typ == yaml_TAG_DIRECTIVE_TOKEN {
+ value := yaml_tag_directive_t{
+ handle: token.value,
+ prefix: token.prefix,
+ }
+ if !yaml_parser_append_tag_directive(parser, value, false, token.start_mark) {
+ return false
+ }
+ tag_directives = append(tag_directives, value)
+ }
+
+ skip_token(parser)
+ token = peek_token(parser)
+ if token == nil {
+ return false
+ }
+ }
+
+ for i := range default_tag_directives {
+ if !yaml_parser_append_tag_directive(parser, default_tag_directives[i], true, token.start_mark) {
+ return false
+ }
+ }
+
+ if version_directive_ref != nil {
+ *version_directive_ref = version_directive
+ }
+ if tag_directives_ref != nil {
+ *tag_directives_ref = tag_directives
+ }
+ return true
+}
+
+// Append a tag directive to the directives stack.
+func yaml_parser_append_tag_directive(parser *yaml_parser_t, value yaml_tag_directive_t, allow_duplicates bool, mark yaml_mark_t) bool {
+ for i := range parser.tag_directives {
+ if bytes.Equal(value.handle, parser.tag_directives[i].handle) {
+ if allow_duplicates {
+ return true
+ }
+ return yaml_parser_set_parser_error(parser, "found duplicate %TAG directive", mark)
+ }
+ }
+
+ // [Go] I suspect the copy is unnecessary. This was likely done
+ // because there was no way to track ownership of the data.
+ value_copy := yaml_tag_directive_t{
+ handle: make([]byte, len(value.handle)),
+ prefix: make([]byte, len(value.prefix)),
+ }
+ copy(value_copy.handle, value.handle)
+ copy(value_copy.prefix, value.prefix)
+ parser.tag_directives = append(parser.tag_directives, value_copy)
+ return true
+}
diff --git a/vendor/gopkg.in/yaml.v2/readerc.go b/vendor/gopkg.in/yaml.v2/readerc.go
new file mode 100644
index 0000000..7c1f5fa
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/readerc.go
@@ -0,0 +1,412 @@
+package yaml
+
+import (
+ "io"
+)
+
+// Set the reader error and return 0.
+func yaml_parser_set_reader_error(parser *yaml_parser_t, problem string, offset int, value int) bool {
+ parser.error = yaml_READER_ERROR
+ parser.problem = problem
+ parser.problem_offset = offset
+ parser.problem_value = value
+ return false
+}
+
+// Byte order marks.
+const (
+ bom_UTF8 = "\xef\xbb\xbf"
+ bom_UTF16LE = "\xff\xfe"
+ bom_UTF16BE = "\xfe\xff"
+)
+
+// Determine the input stream encoding by checking the BOM symbol. If no BOM is
+// found, the UTF-8 encoding is assumed. Return 1 on success, 0 on failure.
+func yaml_parser_determine_encoding(parser *yaml_parser_t) bool {
+ // Ensure that we had enough bytes in the raw buffer.
+ for !parser.eof && len(parser.raw_buffer)-parser.raw_buffer_pos < 3 {
+ if !yaml_parser_update_raw_buffer(parser) {
+ return false
+ }
+ }
+
+ // Determine the encoding.
+ buf := parser.raw_buffer
+ pos := parser.raw_buffer_pos
+ avail := len(buf) - pos
+ if avail >= 2 && buf[pos] == bom_UTF16LE[0] && buf[pos+1] == bom_UTF16LE[1] {
+ parser.encoding = yaml_UTF16LE_ENCODING
+ parser.raw_buffer_pos += 2
+ parser.offset += 2
+ } else if avail >= 2 && buf[pos] == bom_UTF16BE[0] && buf[pos+1] == bom_UTF16BE[1] {
+ parser.encoding = yaml_UTF16BE_ENCODING
+ parser.raw_buffer_pos += 2
+ parser.offset += 2
+ } else if avail >= 3 && buf[pos] == bom_UTF8[0] && buf[pos+1] == bom_UTF8[1] && buf[pos+2] == bom_UTF8[2] {
+ parser.encoding = yaml_UTF8_ENCODING
+ parser.raw_buffer_pos += 3
+ parser.offset += 3
+ } else {
+ parser.encoding = yaml_UTF8_ENCODING
+ }
+ return true
+}
+
+// Update the raw buffer.
+func yaml_parser_update_raw_buffer(parser *yaml_parser_t) bool {
+ size_read := 0
+
+ // Return if the raw buffer is full.
+ if parser.raw_buffer_pos == 0 && len(parser.raw_buffer) == cap(parser.raw_buffer) {
+ return true
+ }
+
+ // Return on EOF.
+ if parser.eof {
+ return true
+ }
+
+ // Move the remaining bytes in the raw buffer to the beginning.
+ if parser.raw_buffer_pos > 0 && parser.raw_buffer_pos < len(parser.raw_buffer) {
+ copy(parser.raw_buffer, parser.raw_buffer[parser.raw_buffer_pos:])
+ }
+ parser.raw_buffer = parser.raw_buffer[:len(parser.raw_buffer)-parser.raw_buffer_pos]
+ parser.raw_buffer_pos = 0
+
+ // Call the read handler to fill the buffer.
+ size_read, err := parser.read_handler(parser, parser.raw_buffer[len(parser.raw_buffer):cap(parser.raw_buffer)])
+ parser.raw_buffer = parser.raw_buffer[:len(parser.raw_buffer)+size_read]
+ if err == io.EOF {
+ parser.eof = true
+ } else if err != nil {
+ return yaml_parser_set_reader_error(parser, "input error: "+err.Error(), parser.offset, -1)
+ }
+ return true
+}
+
+// Ensure that the buffer contains at least `length` characters.
+// Return true on success, false on failure.
+//
+// The length is supposed to be significantly less that the buffer size.
+func yaml_parser_update_buffer(parser *yaml_parser_t, length int) bool {
+ if parser.read_handler == nil {
+ panic("read handler must be set")
+ }
+
+ // [Go] This function was changed to guarantee the requested length size at EOF.
+ // The fact we need to do this is pretty awful, but the description above implies
+ // for that to be the case, and there are tests
+
+ // If the EOF flag is set and the raw buffer is empty, do nothing.
+ if parser.eof && parser.raw_buffer_pos == len(parser.raw_buffer) {
+ // [Go] ACTUALLY! Read the documentation of this function above.
+ // This is just broken. To return true, we need to have the
+ // given length in the buffer. Not doing that means every single
+ // check that calls this function to make sure the buffer has a
+ // given length is Go) panicking; or C) accessing invalid memory.
+ //return true
+ }
+
+ // Return if the buffer contains enough characters.
+ if parser.unread >= length {
+ return true
+ }
+
+ // Determine the input encoding if it is not known yet.
+ if parser.encoding == yaml_ANY_ENCODING {
+ if !yaml_parser_determine_encoding(parser) {
+ return false
+ }
+ }
+
+ // Move the unread characters to the beginning of the buffer.
+ buffer_len := len(parser.buffer)
+ if parser.buffer_pos > 0 && parser.buffer_pos < buffer_len {
+ copy(parser.buffer, parser.buffer[parser.buffer_pos:])
+ buffer_len -= parser.buffer_pos
+ parser.buffer_pos = 0
+ } else if parser.buffer_pos == buffer_len {
+ buffer_len = 0
+ parser.buffer_pos = 0
+ }
+
+ // Open the whole buffer for writing, and cut it before returning.
+ parser.buffer = parser.buffer[:cap(parser.buffer)]
+
+ // Fill the buffer until it has enough characters.
+ first := true
+ for parser.unread < length {
+
+ // Fill the raw buffer if necessary.
+ if !first || parser.raw_buffer_pos == len(parser.raw_buffer) {
+ if !yaml_parser_update_raw_buffer(parser) {
+ parser.buffer = parser.buffer[:buffer_len]
+ return false
+ }
+ }
+ first = false
+
+ // Decode the raw buffer.
+ inner:
+ for parser.raw_buffer_pos != len(parser.raw_buffer) {
+ var value rune
+ var width int
+
+ raw_unread := len(parser.raw_buffer) - parser.raw_buffer_pos
+
+ // Decode the next character.
+ switch parser.encoding {
+ case yaml_UTF8_ENCODING:
+ // Decode a UTF-8 character. Check RFC 3629
+ // (http://www.ietf.org/rfc/rfc3629.txt) for more details.
+ //
+ // The following table (taken from the RFC) is used for
+ // decoding.
+ //
+ // Char. number range | UTF-8 octet sequence
+ // (hexadecimal) | (binary)
+ // --------------------+------------------------------------
+ // 0000 0000-0000 007F | 0xxxxxxx
+ // 0000 0080-0000 07FF | 110xxxxx 10xxxxxx
+ // 0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx
+ // 0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+ //
+ // Additionally, the characters in the range 0xD800-0xDFFF
+ // are prohibited as they are reserved for use with UTF-16
+ // surrogate pairs.
+
+ // Determine the length of the UTF-8 sequence.
+ octet := parser.raw_buffer[parser.raw_buffer_pos]
+ switch {
+ case octet&0x80 == 0x00:
+ width = 1
+ case octet&0xE0 == 0xC0:
+ width = 2
+ case octet&0xF0 == 0xE0:
+ width = 3
+ case octet&0xF8 == 0xF0:
+ width = 4
+ default:
+ // The leading octet is invalid.
+ return yaml_parser_set_reader_error(parser,
+ "invalid leading UTF-8 octet",
+ parser.offset, int(octet))
+ }
+
+ // Check if the raw buffer contains an incomplete character.
+ if width > raw_unread {
+ if parser.eof {
+ return yaml_parser_set_reader_error(parser,
+ "incomplete UTF-8 octet sequence",
+ parser.offset, -1)
+ }
+ break inner
+ }
+
+ // Decode the leading octet.
+ switch {
+ case octet&0x80 == 0x00:
+ value = rune(octet & 0x7F)
+ case octet&0xE0 == 0xC0:
+ value = rune(octet & 0x1F)
+ case octet&0xF0 == 0xE0:
+ value = rune(octet & 0x0F)
+ case octet&0xF8 == 0xF0:
+ value = rune(octet & 0x07)
+ default:
+ value = 0
+ }
+
+ // Check and decode the trailing octets.
+ for k := 1; k < width; k++ {
+ octet = parser.raw_buffer[parser.raw_buffer_pos+k]
+
+ // Check if the octet is valid.
+ if (octet & 0xC0) != 0x80 {
+ return yaml_parser_set_reader_error(parser,
+ "invalid trailing UTF-8 octet",
+ parser.offset+k, int(octet))
+ }
+
+ // Decode the octet.
+ value = (value << 6) + rune(octet&0x3F)
+ }
+
+ // Check the length of the sequence against the value.
+ switch {
+ case width == 1:
+ case width == 2 && value >= 0x80:
+ case width == 3 && value >= 0x800:
+ case width == 4 && value >= 0x10000:
+ default:
+ return yaml_parser_set_reader_error(parser,
+ "invalid length of a UTF-8 sequence",
+ parser.offset, -1)
+ }
+
+ // Check the range of the value.
+ if value >= 0xD800 && value <= 0xDFFF || value > 0x10FFFF {
+ return yaml_parser_set_reader_error(parser,
+ "invalid Unicode character",
+ parser.offset, int(value))
+ }
+
+ case yaml_UTF16LE_ENCODING, yaml_UTF16BE_ENCODING:
+ var low, high int
+ if parser.encoding == yaml_UTF16LE_ENCODING {
+ low, high = 0, 1
+ } else {
+ low, high = 1, 0
+ }
+
+ // The UTF-16 encoding is not as simple as one might
+ // naively think. Check RFC 2781
+ // (http://www.ietf.org/rfc/rfc2781.txt).
+ //
+ // Normally, two subsequent bytes describe a Unicode
+ // character. However a special technique (called a
+ // surrogate pair) is used for specifying character
+ // values larger than 0xFFFF.
+ //
+ // A surrogate pair consists of two pseudo-characters:
+ // high surrogate area (0xD800-0xDBFF)
+ // low surrogate area (0xDC00-0xDFFF)
+ //
+ // The following formulas are used for decoding
+ // and encoding characters using surrogate pairs:
+ //
+ // U = U' + 0x10000 (0x01 00 00 <= U <= 0x10 FF FF)
+ // U' = yyyyyyyyyyxxxxxxxxxx (0 <= U' <= 0x0F FF FF)
+ // W1 = 110110yyyyyyyyyy
+ // W2 = 110111xxxxxxxxxx
+ //
+ // where U is the character value, W1 is the high surrogate
+ // area, W2 is the low surrogate area.
+
+ // Check for incomplete UTF-16 character.
+ if raw_unread < 2 {
+ if parser.eof {
+ return yaml_parser_set_reader_error(parser,
+ "incomplete UTF-16 character",
+ parser.offset, -1)
+ }
+ break inner
+ }
+
+ // Get the character.
+ value = rune(parser.raw_buffer[parser.raw_buffer_pos+low]) +
+ (rune(parser.raw_buffer[parser.raw_buffer_pos+high]) << 8)
+
+ // Check for unexpected low surrogate area.
+ if value&0xFC00 == 0xDC00 {
+ return yaml_parser_set_reader_error(parser,
+ "unexpected low surrogate area",
+ parser.offset, int(value))
+ }
+
+ // Check for a high surrogate area.
+ if value&0xFC00 == 0xD800 {
+ width = 4
+
+ // Check for incomplete surrogate pair.
+ if raw_unread < 4 {
+ if parser.eof {
+ return yaml_parser_set_reader_error(parser,
+ "incomplete UTF-16 surrogate pair",
+ parser.offset, -1)
+ }
+ break inner
+ }
+
+ // Get the next character.
+ value2 := rune(parser.raw_buffer[parser.raw_buffer_pos+low+2]) +
+ (rune(parser.raw_buffer[parser.raw_buffer_pos+high+2]) << 8)
+
+ // Check for a low surrogate area.
+ if value2&0xFC00 != 0xDC00 {
+ return yaml_parser_set_reader_error(parser,
+ "expected low surrogate area",
+ parser.offset+2, int(value2))
+ }
+
+ // Generate the value of the surrogate pair.
+ value = 0x10000 + ((value & 0x3FF) << 10) + (value2 & 0x3FF)
+ } else {
+ width = 2
+ }
+
+ default:
+ panic("impossible")
+ }
+
+ // Check if the character is in the allowed range:
+ // #x9 | #xA | #xD | [#x20-#x7E] (8 bit)
+ // | #x85 | [#xA0-#xD7FF] | [#xE000-#xFFFD] (16 bit)
+ // | [#x10000-#x10FFFF] (32 bit)
+ switch {
+ case value == 0x09:
+ case value == 0x0A:
+ case value == 0x0D:
+ case value >= 0x20 && value <= 0x7E:
+ case value == 0x85:
+ case value >= 0xA0 && value <= 0xD7FF:
+ case value >= 0xE000 && value <= 0xFFFD:
+ case value >= 0x10000 && value <= 0x10FFFF:
+ default:
+ return yaml_parser_set_reader_error(parser,
+ "control characters are not allowed",
+ parser.offset, int(value))
+ }
+
+ // Move the raw pointers.
+ parser.raw_buffer_pos += width
+ parser.offset += width
+
+ // Finally put the character into the buffer.
+ if value <= 0x7F {
+ // 0000 0000-0000 007F . 0xxxxxxx
+ parser.buffer[buffer_len+0] = byte(value)
+ buffer_len += 1
+ } else if value <= 0x7FF {
+ // 0000 0080-0000 07FF . 110xxxxx 10xxxxxx
+ parser.buffer[buffer_len+0] = byte(0xC0 + (value >> 6))
+ parser.buffer[buffer_len+1] = byte(0x80 + (value & 0x3F))
+ buffer_len += 2
+ } else if value <= 0xFFFF {
+ // 0000 0800-0000 FFFF . 1110xxxx 10xxxxxx 10xxxxxx
+ parser.buffer[buffer_len+0] = byte(0xE0 + (value >> 12))
+ parser.buffer[buffer_len+1] = byte(0x80 + ((value >> 6) & 0x3F))
+ parser.buffer[buffer_len+2] = byte(0x80 + (value & 0x3F))
+ buffer_len += 3
+ } else {
+ // 0001 0000-0010 FFFF . 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+ parser.buffer[buffer_len+0] = byte(0xF0 + (value >> 18))
+ parser.buffer[buffer_len+1] = byte(0x80 + ((value >> 12) & 0x3F))
+ parser.buffer[buffer_len+2] = byte(0x80 + ((value >> 6) & 0x3F))
+ parser.buffer[buffer_len+3] = byte(0x80 + (value & 0x3F))
+ buffer_len += 4
+ }
+
+ parser.unread++
+ }
+
+ // On EOF, put NUL into the buffer and return.
+ if parser.eof {
+ parser.buffer[buffer_len] = 0
+ buffer_len++
+ parser.unread++
+ break
+ }
+ }
+ // [Go] Read the documentation of this function above. To return true,
+ // we need to have the given length in the buffer. Not doing that means
+ // every single check that calls this function to make sure the buffer
+ // has a given length is Go) panicking; or C) accessing invalid memory.
+ // This happens here due to the EOF above breaking early.
+ for buffer_len < length {
+ parser.buffer[buffer_len] = 0
+ buffer_len++
+ }
+ parser.buffer = parser.buffer[:buffer_len]
+ return true
+}
diff --git a/vendor/gopkg.in/yaml.v2/resolve.go b/vendor/gopkg.in/yaml.v2/resolve.go
new file mode 100644
index 0000000..4120e0c
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/resolve.go
@@ -0,0 +1,258 @@
+package yaml
+
+import (
+ "encoding/base64"
+ "math"
+ "regexp"
+ "strconv"
+ "strings"
+ "time"
+)
+
+type resolveMapItem struct {
+ value interface{}
+ tag string
+}
+
+var resolveTable = make([]byte, 256)
+var resolveMap = make(map[string]resolveMapItem)
+
+func init() {
+ t := resolveTable
+ t[int('+')] = 'S' // Sign
+ t[int('-')] = 'S'
+ for _, c := range "0123456789" {
+ t[int(c)] = 'D' // Digit
+ }
+ for _, c := range "yYnNtTfFoO~" {
+ t[int(c)] = 'M' // In map
+ }
+ t[int('.')] = '.' // Float (potentially in map)
+
+ var resolveMapList = []struct {
+ v interface{}
+ tag string
+ l []string
+ }{
+ {true, yaml_BOOL_TAG, []string{"y", "Y", "yes", "Yes", "YES"}},
+ {true, yaml_BOOL_TAG, []string{"true", "True", "TRUE"}},
+ {true, yaml_BOOL_TAG, []string{"on", "On", "ON"}},
+ {false, yaml_BOOL_TAG, []string{"n", "N", "no", "No", "NO"}},
+ {false, yaml_BOOL_TAG, []string{"false", "False", "FALSE"}},
+ {false, yaml_BOOL_TAG, []string{"off", "Off", "OFF"}},
+ {nil, yaml_NULL_TAG, []string{"", "~", "null", "Null", "NULL"}},
+ {math.NaN(), yaml_FLOAT_TAG, []string{".nan", ".NaN", ".NAN"}},
+ {math.Inf(+1), yaml_FLOAT_TAG, []string{".inf", ".Inf", ".INF"}},
+ {math.Inf(+1), yaml_FLOAT_TAG, []string{"+.inf", "+.Inf", "+.INF"}},
+ {math.Inf(-1), yaml_FLOAT_TAG, []string{"-.inf", "-.Inf", "-.INF"}},
+ {"<<", yaml_MERGE_TAG, []string{"<<"}},
+ }
+
+ m := resolveMap
+ for _, item := range resolveMapList {
+ for _, s := range item.l {
+ m[s] = resolveMapItem{item.v, item.tag}
+ }
+ }
+}
+
+const longTagPrefix = "tag:yaml.org,2002:"
+
+func shortTag(tag string) string {
+ // TODO This can easily be made faster and produce less garbage.
+ if strings.HasPrefix(tag, longTagPrefix) {
+ return "!!" + tag[len(longTagPrefix):]
+ }
+ return tag
+}
+
+func longTag(tag string) string {
+ if strings.HasPrefix(tag, "!!") {
+ return longTagPrefix + tag[2:]
+ }
+ return tag
+}
+
+func resolvableTag(tag string) bool {
+ switch tag {
+ case "", yaml_STR_TAG, yaml_BOOL_TAG, yaml_INT_TAG, yaml_FLOAT_TAG, yaml_NULL_TAG, yaml_TIMESTAMP_TAG:
+ return true
+ }
+ return false
+}
+
+var yamlStyleFloat = regexp.MustCompile(`^[-+]?(\.[0-9]+|[0-9]+(\.[0-9]*)?)([eE][-+]?[0-9]+)?$`)
+
+func resolve(tag string, in string) (rtag string, out interface{}) {
+ if !resolvableTag(tag) {
+ return tag, in
+ }
+
+ defer func() {
+ switch tag {
+ case "", rtag, yaml_STR_TAG, yaml_BINARY_TAG:
+ return
+ case yaml_FLOAT_TAG:
+ if rtag == yaml_INT_TAG {
+ switch v := out.(type) {
+ case int64:
+ rtag = yaml_FLOAT_TAG
+ out = float64(v)
+ return
+ case int:
+ rtag = yaml_FLOAT_TAG
+ out = float64(v)
+ return
+ }
+ }
+ }
+ failf("cannot decode %s `%s` as a %s", shortTag(rtag), in, shortTag(tag))
+ }()
+
+ // Any data is accepted as a !!str or !!binary.
+ // Otherwise, the prefix is enough of a hint about what it might be.
+ hint := byte('N')
+ if in != "" {
+ hint = resolveTable[in[0]]
+ }
+ if hint != 0 && tag != yaml_STR_TAG && tag != yaml_BINARY_TAG {
+ // Handle things we can lookup in a map.
+ if item, ok := resolveMap[in]; ok {
+ return item.tag, item.value
+ }
+
+ // Base 60 floats are a bad idea, were dropped in YAML 1.2, and
+ // are purposefully unsupported here. They're still quoted on
+ // the way out for compatibility with other parser, though.
+
+ switch hint {
+ case 'M':
+ // We've already checked the map above.
+
+ case '.':
+ // Not in the map, so maybe a normal float.
+ floatv, err := strconv.ParseFloat(in, 64)
+ if err == nil {
+ return yaml_FLOAT_TAG, floatv
+ }
+
+ case 'D', 'S':
+ // Int, float, or timestamp.
+ // Only try values as a timestamp if the value is unquoted or there's an explicit
+ // !!timestamp tag.
+ if tag == "" || tag == yaml_TIMESTAMP_TAG {
+ t, ok := parseTimestamp(in)
+ if ok {
+ return yaml_TIMESTAMP_TAG, t
+ }
+ }
+
+ plain := strings.Replace(in, "_", "", -1)
+ intv, err := strconv.ParseInt(plain, 0, 64)
+ if err == nil {
+ if intv == int64(int(intv)) {
+ return yaml_INT_TAG, int(intv)
+ } else {
+ return yaml_INT_TAG, intv
+ }
+ }
+ uintv, err := strconv.ParseUint(plain, 0, 64)
+ if err == nil {
+ return yaml_INT_TAG, uintv
+ }
+ if yamlStyleFloat.MatchString(plain) {
+ floatv, err := strconv.ParseFloat(plain, 64)
+ if err == nil {
+ return yaml_FLOAT_TAG, floatv
+ }
+ }
+ if strings.HasPrefix(plain, "0b") {
+ intv, err := strconv.ParseInt(plain[2:], 2, 64)
+ if err == nil {
+ if intv == int64(int(intv)) {
+ return yaml_INT_TAG, int(intv)
+ } else {
+ return yaml_INT_TAG, intv
+ }
+ }
+ uintv, err := strconv.ParseUint(plain[2:], 2, 64)
+ if err == nil {
+ return yaml_INT_TAG, uintv
+ }
+ } else if strings.HasPrefix(plain, "-0b") {
+ intv, err := strconv.ParseInt("-" + plain[3:], 2, 64)
+ if err == nil {
+ if true || intv == int64(int(intv)) {
+ return yaml_INT_TAG, int(intv)
+ } else {
+ return yaml_INT_TAG, intv
+ }
+ }
+ }
+ default:
+ panic("resolveTable item not yet handled: " + string(rune(hint)) + " (with " + in + ")")
+ }
+ }
+ return yaml_STR_TAG, in
+}
+
+// encodeBase64 encodes s as base64 that is broken up into multiple lines
+// as appropriate for the resulting length.
+func encodeBase64(s string) string {
+ const lineLen = 70
+ encLen := base64.StdEncoding.EncodedLen(len(s))
+ lines := encLen/lineLen + 1
+ buf := make([]byte, encLen*2+lines)
+ in := buf[0:encLen]
+ out := buf[encLen:]
+ base64.StdEncoding.Encode(in, []byte(s))
+ k := 0
+ for i := 0; i < len(in); i += lineLen {
+ j := i + lineLen
+ if j > len(in) {
+ j = len(in)
+ }
+ k += copy(out[k:], in[i:j])
+ if lines > 1 {
+ out[k] = '\n'
+ k++
+ }
+ }
+ return string(out[:k])
+}
+
+// This is a subset of the formats allowed by the regular expression
+// defined at http://yaml.org/type/timestamp.html.
+var allowedTimestampFormats = []string{
+ "2006-1-2T15:4:5.999999999Z07:00", // RCF3339Nano with short date fields.
+ "2006-1-2t15:4:5.999999999Z07:00", // RFC3339Nano with short date fields and lower-case "t".
+ "2006-1-2 15:4:5.999999999", // space separated with no time zone
+ "2006-1-2", // date only
+ // Notable exception: time.Parse cannot handle: "2001-12-14 21:59:43.10 -5"
+ // from the set of examples.
+}
+
+// parseTimestamp parses s as a timestamp string and
+// returns the timestamp and reports whether it succeeded.
+// Timestamp formats are defined at http://yaml.org/type/timestamp.html
+func parseTimestamp(s string) (time.Time, bool) {
+ // TODO write code to check all the formats supported by
+ // http://yaml.org/type/timestamp.html instead of using time.Parse.
+
+ // Quick check: all date formats start with YYYY-.
+ i := 0
+ for ; i < len(s); i++ {
+ if c := s[i]; c < '0' || c > '9' {
+ break
+ }
+ }
+ if i != 4 || i == len(s) || s[i] != '-' {
+ return time.Time{}, false
+ }
+ for _, format := range allowedTimestampFormats {
+ if t, err := time.Parse(format, s); err == nil {
+ return t, true
+ }
+ }
+ return time.Time{}, false
+}
diff --git a/vendor/gopkg.in/yaml.v2/scannerc.go b/vendor/gopkg.in/yaml.v2/scannerc.go
new file mode 100644
index 0000000..077fd1d
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/scannerc.go
@@ -0,0 +1,2696 @@
+package yaml
+
+import (
+ "bytes"
+ "fmt"
+)
+
+// Introduction
+// ************
+//
+// The following notes assume that you are familiar with the YAML specification
+// (http://yaml.org/spec/1.2/spec.html). We mostly follow it, although in
+// some cases we are less restrictive that it requires.
+//
+// The process of transforming a YAML stream into a sequence of events is
+// divided on two steps: Scanning and Parsing.
+//
+// The Scanner transforms the input stream into a sequence of tokens, while the
+// parser transform the sequence of tokens produced by the Scanner into a
+// sequence of parsing events.
+//
+// The Scanner is rather clever and complicated. The Parser, on the contrary,
+// is a straightforward implementation of a recursive-descendant parser (or,
+// LL(1) parser, as it is usually called).
+//
+// Actually there are two issues of Scanning that might be called "clever", the
+// rest is quite straightforward. The issues are "block collection start" and
+// "simple keys". Both issues are explained below in details.
+//
+// Here the Scanning step is explained and implemented. We start with the list
+// of all the tokens produced by the Scanner together with short descriptions.
+//
+// Now, tokens:
+//
+// STREAM-START(encoding) # The stream start.
+// STREAM-END # The stream end.
+// VERSION-DIRECTIVE(major,minor) # The '%YAML' directive.
+// TAG-DIRECTIVE(handle,prefix) # The '%TAG' directive.
+// DOCUMENT-START # '---'
+// DOCUMENT-END # '...'
+// BLOCK-SEQUENCE-START # Indentation increase denoting a block
+// BLOCK-MAPPING-START # sequence or a block mapping.
+// BLOCK-END # Indentation decrease.
+// FLOW-SEQUENCE-START # '['
+// FLOW-SEQUENCE-END # ']'
+// BLOCK-SEQUENCE-START # '{'
+// BLOCK-SEQUENCE-END # '}'
+// BLOCK-ENTRY # '-'
+// FLOW-ENTRY # ','
+// KEY # '?' or nothing (simple keys).
+// VALUE # ':'
+// ALIAS(anchor) # '*anchor'
+// ANCHOR(anchor) # '&anchor'
+// TAG(handle,suffix) # '!handle!suffix'
+// SCALAR(value,style) # A scalar.
+//
+// The following two tokens are "virtual" tokens denoting the beginning and the
+// end of the stream:
+//
+// STREAM-START(encoding)
+// STREAM-END
+//
+// We pass the information about the input stream encoding with the
+// STREAM-START token.
+//
+// The next two tokens are responsible for tags:
+//
+// VERSION-DIRECTIVE(major,minor)
+// TAG-DIRECTIVE(handle,prefix)
+//
+// Example:
+//
+// %YAML 1.1
+// %TAG ! !foo
+// %TAG !yaml! tag:yaml.org,2002:
+// ---
+//
+// The correspoding sequence of tokens:
+//
+// STREAM-START(utf-8)
+// VERSION-DIRECTIVE(1,1)
+// TAG-DIRECTIVE("!","!foo")
+// TAG-DIRECTIVE("!yaml","tag:yaml.org,2002:")
+// DOCUMENT-START
+// STREAM-END
+//
+// Note that the VERSION-DIRECTIVE and TAG-DIRECTIVE tokens occupy a whole
+// line.
+//
+// The document start and end indicators are represented by:
+//
+// DOCUMENT-START
+// DOCUMENT-END
+//
+// Note that if a YAML stream contains an implicit document (without '---'
+// and '...' indicators), no DOCUMENT-START and DOCUMENT-END tokens will be
+// produced.
+//
+// In the following examples, we present whole documents together with the
+// produced tokens.
+//
+// 1. An implicit document:
+//
+// 'a scalar'
+//
+// Tokens:
+//
+// STREAM-START(utf-8)
+// SCALAR("a scalar",single-quoted)
+// STREAM-END
+//
+// 2. An explicit document:
+//
+// ---
+// 'a scalar'
+// ...
+//
+// Tokens:
+//
+// STREAM-START(utf-8)
+// DOCUMENT-START
+// SCALAR("a scalar",single-quoted)
+// DOCUMENT-END
+// STREAM-END
+//
+// 3. Several documents in a stream:
+//
+// 'a scalar'
+// ---
+// 'another scalar'
+// ---
+// 'yet another scalar'
+//
+// Tokens:
+//
+// STREAM-START(utf-8)
+// SCALAR("a scalar",single-quoted)
+// DOCUMENT-START
+// SCALAR("another scalar",single-quoted)
+// DOCUMENT-START
+// SCALAR("yet another scalar",single-quoted)
+// STREAM-END
+//
+// We have already introduced the SCALAR token above. The following tokens are
+// used to describe aliases, anchors, tag, and scalars:
+//
+// ALIAS(anchor)
+// ANCHOR(anchor)
+// TAG(handle,suffix)
+// SCALAR(value,style)
+//
+// The following series of examples illustrate the usage of these tokens:
+//
+// 1. A recursive sequence:
+//
+// &A [ *A ]
+//
+// Tokens:
+//
+// STREAM-START(utf-8)
+// ANCHOR("A")
+// FLOW-SEQUENCE-START
+// ALIAS("A")
+// FLOW-SEQUENCE-END
+// STREAM-END
+//
+// 2. A tagged scalar:
+//
+// !!float "3.14" # A good approximation.
+//
+// Tokens:
+//
+// STREAM-START(utf-8)
+// TAG("!!","float")
+// SCALAR("3.14",double-quoted)
+// STREAM-END
+//
+// 3. Various scalar styles:
+//
+// --- # Implicit empty plain scalars do not produce tokens.
+// --- a plain scalar
+// --- 'a single-quoted scalar'
+// --- "a double-quoted scalar"
+// --- |-
+// a literal scalar
+// --- >-
+// a folded
+// scalar
+//
+// Tokens:
+//
+// STREAM-START(utf-8)
+// DOCUMENT-START
+// DOCUMENT-START
+// SCALAR("a plain scalar",plain)
+// DOCUMENT-START
+// SCALAR("a single-quoted scalar",single-quoted)
+// DOCUMENT-START
+// SCALAR("a double-quoted scalar",double-quoted)
+// DOCUMENT-START
+// SCALAR("a literal scalar",literal)
+// DOCUMENT-START
+// SCALAR("a folded scalar",folded)
+// STREAM-END
+//
+// Now it's time to review collection-related tokens. We will start with
+// flow collections:
+//
+// FLOW-SEQUENCE-START
+// FLOW-SEQUENCE-END
+// FLOW-MAPPING-START
+// FLOW-MAPPING-END
+// FLOW-ENTRY
+// KEY
+// VALUE
+//
+// The tokens FLOW-SEQUENCE-START, FLOW-SEQUENCE-END, FLOW-MAPPING-START, and
+// FLOW-MAPPING-END represent the indicators '[', ']', '{', and '}'
+// correspondingly. FLOW-ENTRY represent the ',' indicator. Finally the
+// indicators '?' and ':', which are used for denoting mapping keys and values,
+// are represented by the KEY and VALUE tokens.
+//
+// The following examples show flow collections:
+//
+// 1. A flow sequence:
+//
+// [item 1, item 2, item 3]
+//
+// Tokens:
+//
+// STREAM-START(utf-8)
+// FLOW-SEQUENCE-START
+// SCALAR("item 1",plain)
+// FLOW-ENTRY
+// SCALAR("item 2",plain)
+// FLOW-ENTRY
+// SCALAR("item 3",plain)
+// FLOW-SEQUENCE-END
+// STREAM-END
+//
+// 2. A flow mapping:
+//
+// {
+// a simple key: a value, # Note that the KEY token is produced.
+// ? a complex key: another value,
+// }
+//
+// Tokens:
+//
+// STREAM-START(utf-8)
+// FLOW-MAPPING-START
+// KEY
+// SCALAR("a simple key",plain)
+// VALUE
+// SCALAR("a value",plain)
+// FLOW-ENTRY
+// KEY
+// SCALAR("a complex key",plain)
+// VALUE
+// SCALAR("another value",plain)
+// FLOW-ENTRY
+// FLOW-MAPPING-END
+// STREAM-END
+//
+// A simple key is a key which is not denoted by the '?' indicator. Note that
+// the Scanner still produce the KEY token whenever it encounters a simple key.
+//
+// For scanning block collections, the following tokens are used (note that we
+// repeat KEY and VALUE here):
+//
+// BLOCK-SEQUENCE-START
+// BLOCK-MAPPING-START
+// BLOCK-END
+// BLOCK-ENTRY
+// KEY
+// VALUE
+//
+// The tokens BLOCK-SEQUENCE-START and BLOCK-MAPPING-START denote indentation
+// increase that precedes a block collection (cf. the INDENT token in Python).
+// The token BLOCK-END denote indentation decrease that ends a block collection
+// (cf. the DEDENT token in Python). However YAML has some syntax pecularities
+// that makes detections of these tokens more complex.
+//
+// The tokens BLOCK-ENTRY, KEY, and VALUE are used to represent the indicators
+// '-', '?', and ':' correspondingly.
+//
+// The following examples show how the tokens BLOCK-SEQUENCE-START,
+// BLOCK-MAPPING-START, and BLOCK-END are emitted by the Scanner:
+//
+// 1. Block sequences:
+//
+// - item 1
+// - item 2
+// -
+// - item 3.1
+// - item 3.2
+// -
+// key 1: value 1
+// key 2: value 2
+//
+// Tokens:
+//
+// STREAM-START(utf-8)
+// BLOCK-SEQUENCE-START
+// BLOCK-ENTRY
+// SCALAR("item 1",plain)
+// BLOCK-ENTRY
+// SCALAR("item 2",plain)
+// BLOCK-ENTRY
+// BLOCK-SEQUENCE-START
+// BLOCK-ENTRY
+// SCALAR("item 3.1",plain)
+// BLOCK-ENTRY
+// SCALAR("item 3.2",plain)
+// BLOCK-END
+// BLOCK-ENTRY
+// BLOCK-MAPPING-START
+// KEY
+// SCALAR("key 1",plain)
+// VALUE
+// SCALAR("value 1",plain)
+// KEY
+// SCALAR("key 2",plain)
+// VALUE
+// SCALAR("value 2",plain)
+// BLOCK-END
+// BLOCK-END
+// STREAM-END
+//
+// 2. Block mappings:
+//
+// a simple key: a value # The KEY token is produced here.
+// ? a complex key
+// : another value
+// a mapping:
+// key 1: value 1
+// key 2: value 2
+// a sequence:
+// - item 1
+// - item 2
+//
+// Tokens:
+//
+// STREAM-START(utf-8)
+// BLOCK-MAPPING-START
+// KEY
+// SCALAR("a simple key",plain)
+// VALUE
+// SCALAR("a value",plain)
+// KEY
+// SCALAR("a complex key",plain)
+// VALUE
+// SCALAR("another value",plain)
+// KEY
+// SCALAR("a mapping",plain)
+// BLOCK-MAPPING-START
+// KEY
+// SCALAR("key 1",plain)
+// VALUE
+// SCALAR("value 1",plain)
+// KEY
+// SCALAR("key 2",plain)
+// VALUE
+// SCALAR("value 2",plain)
+// BLOCK-END
+// KEY
+// SCALAR("a sequence",plain)
+// VALUE
+// BLOCK-SEQUENCE-START
+// BLOCK-ENTRY
+// SCALAR("item 1",plain)
+// BLOCK-ENTRY
+// SCALAR("item 2",plain)
+// BLOCK-END
+// BLOCK-END
+// STREAM-END
+//
+// YAML does not always require to start a new block collection from a new
+// line. If the current line contains only '-', '?', and ':' indicators, a new
+// block collection may start at the current line. The following examples
+// illustrate this case:
+//
+// 1. Collections in a sequence:
+//
+// - - item 1
+// - item 2
+// - key 1: value 1
+// key 2: value 2
+// - ? complex key
+// : complex value
+//
+// Tokens:
+//
+// STREAM-START(utf-8)
+// BLOCK-SEQUENCE-START
+// BLOCK-ENTRY
+// BLOCK-SEQUENCE-START
+// BLOCK-ENTRY
+// SCALAR("item 1",plain)
+// BLOCK-ENTRY
+// SCALAR("item 2",plain)
+// BLOCK-END
+// BLOCK-ENTRY
+// BLOCK-MAPPING-START
+// KEY
+// SCALAR("key 1",plain)
+// VALUE
+// SCALAR("value 1",plain)
+// KEY
+// SCALAR("key 2",plain)
+// VALUE
+// SCALAR("value 2",plain)
+// BLOCK-END
+// BLOCK-ENTRY
+// BLOCK-MAPPING-START
+// KEY
+// SCALAR("complex key")
+// VALUE
+// SCALAR("complex value")
+// BLOCK-END
+// BLOCK-END
+// STREAM-END
+//
+// 2. Collections in a mapping:
+//
+// ? a sequence
+// : - item 1
+// - item 2
+// ? a mapping
+// : key 1: value 1
+// key 2: value 2
+//
+// Tokens:
+//
+// STREAM-START(utf-8)
+// BLOCK-MAPPING-START
+// KEY
+// SCALAR("a sequence",plain)
+// VALUE
+// BLOCK-SEQUENCE-START
+// BLOCK-ENTRY
+// SCALAR("item 1",plain)
+// BLOCK-ENTRY
+// SCALAR("item 2",plain)
+// BLOCK-END
+// KEY
+// SCALAR("a mapping",plain)
+// VALUE
+// BLOCK-MAPPING-START
+// KEY
+// SCALAR("key 1",plain)
+// VALUE
+// SCALAR("value 1",plain)
+// KEY
+// SCALAR("key 2",plain)
+// VALUE
+// SCALAR("value 2",plain)
+// BLOCK-END
+// BLOCK-END
+// STREAM-END
+//
+// YAML also permits non-indented sequences if they are included into a block
+// mapping. In this case, the token BLOCK-SEQUENCE-START is not produced:
+//
+// key:
+// - item 1 # BLOCK-SEQUENCE-START is NOT produced here.
+// - item 2
+//
+// Tokens:
+//
+// STREAM-START(utf-8)
+// BLOCK-MAPPING-START
+// KEY
+// SCALAR("key",plain)
+// VALUE
+// BLOCK-ENTRY
+// SCALAR("item 1",plain)
+// BLOCK-ENTRY
+// SCALAR("item 2",plain)
+// BLOCK-END
+//
+
+// Ensure that the buffer contains the required number of characters.
+// Return true on success, false on failure (reader error or memory error).
+func cache(parser *yaml_parser_t, length int) bool {
+ // [Go] This was inlined: !cache(A, B) -> unread < B && !update(A, B)
+ return parser.unread >= length || yaml_parser_update_buffer(parser, length)
+}
+
+// Advance the buffer pointer.
+func skip(parser *yaml_parser_t) {
+ parser.mark.index++
+ parser.mark.column++
+ parser.unread--
+ parser.buffer_pos += width(parser.buffer[parser.buffer_pos])
+}
+
+func skip_line(parser *yaml_parser_t) {
+ if is_crlf(parser.buffer, parser.buffer_pos) {
+ parser.mark.index += 2
+ parser.mark.column = 0
+ parser.mark.line++
+ parser.unread -= 2
+ parser.buffer_pos += 2
+ } else if is_break(parser.buffer, parser.buffer_pos) {
+ parser.mark.index++
+ parser.mark.column = 0
+ parser.mark.line++
+ parser.unread--
+ parser.buffer_pos += width(parser.buffer[parser.buffer_pos])
+ }
+}
+
+// Copy a character to a string buffer and advance pointers.
+func read(parser *yaml_parser_t, s []byte) []byte {
+ w := width(parser.buffer[parser.buffer_pos])
+ if w == 0 {
+ panic("invalid character sequence")
+ }
+ if len(s) == 0 {
+ s = make([]byte, 0, 32)
+ }
+ if w == 1 && len(s)+w <= cap(s) {
+ s = s[:len(s)+1]
+ s[len(s)-1] = parser.buffer[parser.buffer_pos]
+ parser.buffer_pos++
+ } else {
+ s = append(s, parser.buffer[parser.buffer_pos:parser.buffer_pos+w]...)
+ parser.buffer_pos += w
+ }
+ parser.mark.index++
+ parser.mark.column++
+ parser.unread--
+ return s
+}
+
+// Copy a line break character to a string buffer and advance pointers.
+func read_line(parser *yaml_parser_t, s []byte) []byte {
+ buf := parser.buffer
+ pos := parser.buffer_pos
+ switch {
+ case buf[pos] == '\r' && buf[pos+1] == '\n':
+ // CR LF . LF
+ s = append(s, '\n')
+ parser.buffer_pos += 2
+ parser.mark.index++
+ parser.unread--
+ case buf[pos] == '\r' || buf[pos] == '\n':
+ // CR|LF . LF
+ s = append(s, '\n')
+ parser.buffer_pos += 1
+ case buf[pos] == '\xC2' && buf[pos+1] == '\x85':
+ // NEL . LF
+ s = append(s, '\n')
+ parser.buffer_pos += 2
+ case buf[pos] == '\xE2' && buf[pos+1] == '\x80' && (buf[pos+2] == '\xA8' || buf[pos+2] == '\xA9'):
+ // LS|PS . LS|PS
+ s = append(s, buf[parser.buffer_pos:pos+3]...)
+ parser.buffer_pos += 3
+ default:
+ return s
+ }
+ parser.mark.index++
+ parser.mark.column = 0
+ parser.mark.line++
+ parser.unread--
+ return s
+}
+
+// Get the next token.
+func yaml_parser_scan(parser *yaml_parser_t, token *yaml_token_t) bool {
+ // Erase the token object.
+ *token = yaml_token_t{} // [Go] Is this necessary?
+
+ // No tokens after STREAM-END or error.
+ if parser.stream_end_produced || parser.error != yaml_NO_ERROR {
+ return true
+ }
+
+ // Ensure that the tokens queue contains enough tokens.
+ if !parser.token_available {
+ if !yaml_parser_fetch_more_tokens(parser) {
+ return false
+ }
+ }
+
+ // Fetch the next token from the queue.
+ *token = parser.tokens[parser.tokens_head]
+ parser.tokens_head++
+ parser.tokens_parsed++
+ parser.token_available = false
+
+ if token.typ == yaml_STREAM_END_TOKEN {
+ parser.stream_end_produced = true
+ }
+ return true
+}
+
+// Set the scanner error and return false.
+func yaml_parser_set_scanner_error(parser *yaml_parser_t, context string, context_mark yaml_mark_t, problem string) bool {
+ parser.error = yaml_SCANNER_ERROR
+ parser.context = context
+ parser.context_mark = context_mark
+ parser.problem = problem
+ parser.problem_mark = parser.mark
+ return false
+}
+
+func yaml_parser_set_scanner_tag_error(parser *yaml_parser_t, directive bool, context_mark yaml_mark_t, problem string) bool {
+ context := "while parsing a tag"
+ if directive {
+ context = "while parsing a %TAG directive"
+ }
+ return yaml_parser_set_scanner_error(parser, context, context_mark, problem)
+}
+
+func trace(args ...interface{}) func() {
+ pargs := append([]interface{}{"+++"}, args...)
+ fmt.Println(pargs...)
+ pargs = append([]interface{}{"---"}, args...)
+ return func() { fmt.Println(pargs...) }
+}
+
+// Ensure that the tokens queue contains at least one token which can be
+// returned to the Parser.
+func yaml_parser_fetch_more_tokens(parser *yaml_parser_t) bool {
+ // While we need more tokens to fetch, do it.
+ for {
+ // Check if we really need to fetch more tokens.
+ need_more_tokens := false
+
+ if parser.tokens_head == len(parser.tokens) {
+ // Queue is empty.
+ need_more_tokens = true
+ } else {
+ // Check if any potential simple key may occupy the head position.
+ if !yaml_parser_stale_simple_keys(parser) {
+ return false
+ }
+
+ for i := range parser.simple_keys {
+ simple_key := &parser.simple_keys[i]
+ if simple_key.possible && simple_key.token_number == parser.tokens_parsed {
+ need_more_tokens = true
+ break
+ }
+ }
+ }
+
+ // We are finished.
+ if !need_more_tokens {
+ break
+ }
+ // Fetch the next token.
+ if !yaml_parser_fetch_next_token(parser) {
+ return false
+ }
+ }
+
+ parser.token_available = true
+ return true
+}
+
+// The dispatcher for token fetchers.
+func yaml_parser_fetch_next_token(parser *yaml_parser_t) bool {
+ // Ensure that the buffer is initialized.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+
+ // Check if we just started scanning. Fetch STREAM-START then.
+ if !parser.stream_start_produced {
+ return yaml_parser_fetch_stream_start(parser)
+ }
+
+ // Eat whitespaces and comments until we reach the next token.
+ if !yaml_parser_scan_to_next_token(parser) {
+ return false
+ }
+
+ // Remove obsolete potential simple keys.
+ if !yaml_parser_stale_simple_keys(parser) {
+ return false
+ }
+
+ // Check the indentation level against the current column.
+ if !yaml_parser_unroll_indent(parser, parser.mark.column) {
+ return false
+ }
+
+ // Ensure that the buffer contains at least 4 characters. 4 is the length
+ // of the longest indicators ('--- ' and '... ').
+ if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) {
+ return false
+ }
+
+ // Is it the end of the stream?
+ if is_z(parser.buffer, parser.buffer_pos) {
+ return yaml_parser_fetch_stream_end(parser)
+ }
+
+ // Is it a directive?
+ if parser.mark.column == 0 && parser.buffer[parser.buffer_pos] == '%' {
+ return yaml_parser_fetch_directive(parser)
+ }
+
+ buf := parser.buffer
+ pos := parser.buffer_pos
+
+ // Is it the document start indicator?
+ if parser.mark.column == 0 && buf[pos] == '-' && buf[pos+1] == '-' && buf[pos+2] == '-' && is_blankz(buf, pos+3) {
+ return yaml_parser_fetch_document_indicator(parser, yaml_DOCUMENT_START_TOKEN)
+ }
+
+ // Is it the document end indicator?
+ if parser.mark.column == 0 && buf[pos] == '.' && buf[pos+1] == '.' && buf[pos+2] == '.' && is_blankz(buf, pos+3) {
+ return yaml_parser_fetch_document_indicator(parser, yaml_DOCUMENT_END_TOKEN)
+ }
+
+ // Is it the flow sequence start indicator?
+ if buf[pos] == '[' {
+ return yaml_parser_fetch_flow_collection_start(parser, yaml_FLOW_SEQUENCE_START_TOKEN)
+ }
+
+ // Is it the flow mapping start indicator?
+ if parser.buffer[parser.buffer_pos] == '{' {
+ return yaml_parser_fetch_flow_collection_start(parser, yaml_FLOW_MAPPING_START_TOKEN)
+ }
+
+ // Is it the flow sequence end indicator?
+ if parser.buffer[parser.buffer_pos] == ']' {
+ return yaml_parser_fetch_flow_collection_end(parser,
+ yaml_FLOW_SEQUENCE_END_TOKEN)
+ }
+
+ // Is it the flow mapping end indicator?
+ if parser.buffer[parser.buffer_pos] == '}' {
+ return yaml_parser_fetch_flow_collection_end(parser,
+ yaml_FLOW_MAPPING_END_TOKEN)
+ }
+
+ // Is it the flow entry indicator?
+ if parser.buffer[parser.buffer_pos] == ',' {
+ return yaml_parser_fetch_flow_entry(parser)
+ }
+
+ // Is it the block entry indicator?
+ if parser.buffer[parser.buffer_pos] == '-' && is_blankz(parser.buffer, parser.buffer_pos+1) {
+ return yaml_parser_fetch_block_entry(parser)
+ }
+
+ // Is it the key indicator?
+ if parser.buffer[parser.buffer_pos] == '?' && (parser.flow_level > 0 || is_blankz(parser.buffer, parser.buffer_pos+1)) {
+ return yaml_parser_fetch_key(parser)
+ }
+
+ // Is it the value indicator?
+ if parser.buffer[parser.buffer_pos] == ':' && (parser.flow_level > 0 || is_blankz(parser.buffer, parser.buffer_pos+1)) {
+ return yaml_parser_fetch_value(parser)
+ }
+
+ // Is it an alias?
+ if parser.buffer[parser.buffer_pos] == '*' {
+ return yaml_parser_fetch_anchor(parser, yaml_ALIAS_TOKEN)
+ }
+
+ // Is it an anchor?
+ if parser.buffer[parser.buffer_pos] == '&' {
+ return yaml_parser_fetch_anchor(parser, yaml_ANCHOR_TOKEN)
+ }
+
+ // Is it a tag?
+ if parser.buffer[parser.buffer_pos] == '!' {
+ return yaml_parser_fetch_tag(parser)
+ }
+
+ // Is it a literal scalar?
+ if parser.buffer[parser.buffer_pos] == '|' && parser.flow_level == 0 {
+ return yaml_parser_fetch_block_scalar(parser, true)
+ }
+
+ // Is it a folded scalar?
+ if parser.buffer[parser.buffer_pos] == '>' && parser.flow_level == 0 {
+ return yaml_parser_fetch_block_scalar(parser, false)
+ }
+
+ // Is it a single-quoted scalar?
+ if parser.buffer[parser.buffer_pos] == '\'' {
+ return yaml_parser_fetch_flow_scalar(parser, true)
+ }
+
+ // Is it a double-quoted scalar?
+ if parser.buffer[parser.buffer_pos] == '"' {
+ return yaml_parser_fetch_flow_scalar(parser, false)
+ }
+
+ // Is it a plain scalar?
+ //
+ // A plain scalar may start with any non-blank characters except
+ //
+ // '-', '?', ':', ',', '[', ']', '{', '}',
+ // '#', '&', '*', '!', '|', '>', '\'', '\"',
+ // '%', '@', '`'.
+ //
+ // In the block context (and, for the '-' indicator, in the flow context
+ // too), it may also start with the characters
+ //
+ // '-', '?', ':'
+ //
+ // if it is followed by a non-space character.
+ //
+ // The last rule is more restrictive than the specification requires.
+ // [Go] Make this logic more reasonable.
+ //switch parser.buffer[parser.buffer_pos] {
+ //case '-', '?', ':', ',', '?', '-', ',', ':', ']', '[', '}', '{', '&', '#', '!', '*', '>', '|', '"', '\'', '@', '%', '-', '`':
+ //}
+ if !(is_blankz(parser.buffer, parser.buffer_pos) || parser.buffer[parser.buffer_pos] == '-' ||
+ parser.buffer[parser.buffer_pos] == '?' || parser.buffer[parser.buffer_pos] == ':' ||
+ parser.buffer[parser.buffer_pos] == ',' || parser.buffer[parser.buffer_pos] == '[' ||
+ parser.buffer[parser.buffer_pos] == ']' || parser.buffer[parser.buffer_pos] == '{' ||
+ parser.buffer[parser.buffer_pos] == '}' || parser.buffer[parser.buffer_pos] == '#' ||
+ parser.buffer[parser.buffer_pos] == '&' || parser.buffer[parser.buffer_pos] == '*' ||
+ parser.buffer[parser.buffer_pos] == '!' || parser.buffer[parser.buffer_pos] == '|' ||
+ parser.buffer[parser.buffer_pos] == '>' || parser.buffer[parser.buffer_pos] == '\'' ||
+ parser.buffer[parser.buffer_pos] == '"' || parser.buffer[parser.buffer_pos] == '%' ||
+ parser.buffer[parser.buffer_pos] == '@' || parser.buffer[parser.buffer_pos] == '`') ||
+ (parser.buffer[parser.buffer_pos] == '-' && !is_blank(parser.buffer, parser.buffer_pos+1)) ||
+ (parser.flow_level == 0 &&
+ (parser.buffer[parser.buffer_pos] == '?' || parser.buffer[parser.buffer_pos] == ':') &&
+ !is_blankz(parser.buffer, parser.buffer_pos+1)) {
+ return yaml_parser_fetch_plain_scalar(parser)
+ }
+
+ // If we don't determine the token type so far, it is an error.
+ return yaml_parser_set_scanner_error(parser,
+ "while scanning for the next token", parser.mark,
+ "found character that cannot start any token")
+}
+
+// Check the list of potential simple keys and remove the positions that
+// cannot contain simple keys anymore.
+func yaml_parser_stale_simple_keys(parser *yaml_parser_t) bool {
+ // Check for a potential simple key for each flow level.
+ for i := range parser.simple_keys {
+ simple_key := &parser.simple_keys[i]
+
+ // The specification requires that a simple key
+ //
+ // - is limited to a single line,
+ // - is shorter than 1024 characters.
+ if simple_key.possible && (simple_key.mark.line < parser.mark.line || simple_key.mark.index+1024 < parser.mark.index) {
+
+ // Check if the potential simple key to be removed is required.
+ if simple_key.required {
+ return yaml_parser_set_scanner_error(parser,
+ "while scanning a simple key", simple_key.mark,
+ "could not find expected ':'")
+ }
+ simple_key.possible = false
+ }
+ }
+ return true
+}
+
+// Check if a simple key may start at the current position and add it if
+// needed.
+func yaml_parser_save_simple_key(parser *yaml_parser_t) bool {
+ // A simple key is required at the current position if the scanner is in
+ // the block context and the current column coincides with the indentation
+ // level.
+
+ required := parser.flow_level == 0 && parser.indent == parser.mark.column
+
+ //
+ // If the current position may start a simple key, save it.
+ //
+ if parser.simple_key_allowed {
+ simple_key := yaml_simple_key_t{
+ possible: true,
+ required: required,
+ token_number: parser.tokens_parsed + (len(parser.tokens) - parser.tokens_head),
+ }
+ simple_key.mark = parser.mark
+
+ if !yaml_parser_remove_simple_key(parser) {
+ return false
+ }
+ parser.simple_keys[len(parser.simple_keys)-1] = simple_key
+ }
+ return true
+}
+
+// Remove a potential simple key at the current flow level.
+func yaml_parser_remove_simple_key(parser *yaml_parser_t) bool {
+ i := len(parser.simple_keys) - 1
+ if parser.simple_keys[i].possible {
+ // If the key is required, it is an error.
+ if parser.simple_keys[i].required {
+ return yaml_parser_set_scanner_error(parser,
+ "while scanning a simple key", parser.simple_keys[i].mark,
+ "could not find expected ':'")
+ }
+ }
+ // Remove the key from the stack.
+ parser.simple_keys[i].possible = false
+ return true
+}
+
+// Increase the flow level and resize the simple key list if needed.
+func yaml_parser_increase_flow_level(parser *yaml_parser_t) bool {
+ // Reset the simple key on the next level.
+ parser.simple_keys = append(parser.simple_keys, yaml_simple_key_t{})
+
+ // Increase the flow level.
+ parser.flow_level++
+ return true
+}
+
+// Decrease the flow level.
+func yaml_parser_decrease_flow_level(parser *yaml_parser_t) bool {
+ if parser.flow_level > 0 {
+ parser.flow_level--
+ parser.simple_keys = parser.simple_keys[:len(parser.simple_keys)-1]
+ }
+ return true
+}
+
+// Push the current indentation level to the stack and set the new level
+// the current column is greater than the indentation level. In this case,
+// append or insert the specified token into the token queue.
+func yaml_parser_roll_indent(parser *yaml_parser_t, column, number int, typ yaml_token_type_t, mark yaml_mark_t) bool {
+ // In the flow context, do nothing.
+ if parser.flow_level > 0 {
+ return true
+ }
+
+ if parser.indent < column {
+ // Push the current indentation level to the stack and set the new
+ // indentation level.
+ parser.indents = append(parser.indents, parser.indent)
+ parser.indent = column
+
+ // Create a token and insert it into the queue.
+ token := yaml_token_t{
+ typ: typ,
+ start_mark: mark,
+ end_mark: mark,
+ }
+ if number > -1 {
+ number -= parser.tokens_parsed
+ }
+ yaml_insert_token(parser, number, &token)
+ }
+ return true
+}
+
+// Pop indentation levels from the indents stack until the current level
+// becomes less or equal to the column. For each indentation level, append
+// the BLOCK-END token.
+func yaml_parser_unroll_indent(parser *yaml_parser_t, column int) bool {
+ // In the flow context, do nothing.
+ if parser.flow_level > 0 {
+ return true
+ }
+
+ // Loop through the indentation levels in the stack.
+ for parser.indent > column {
+ // Create a token and append it to the queue.
+ token := yaml_token_t{
+ typ: yaml_BLOCK_END_TOKEN,
+ start_mark: parser.mark,
+ end_mark: parser.mark,
+ }
+ yaml_insert_token(parser, -1, &token)
+
+ // Pop the indentation level.
+ parser.indent = parser.indents[len(parser.indents)-1]
+ parser.indents = parser.indents[:len(parser.indents)-1]
+ }
+ return true
+}
+
+// Initialize the scanner and produce the STREAM-START token.
+func yaml_parser_fetch_stream_start(parser *yaml_parser_t) bool {
+
+ // Set the initial indentation.
+ parser.indent = -1
+
+ // Initialize the simple key stack.
+ parser.simple_keys = append(parser.simple_keys, yaml_simple_key_t{})
+
+ // A simple key is allowed at the beginning of the stream.
+ parser.simple_key_allowed = true
+
+ // We have started.
+ parser.stream_start_produced = true
+
+ // Create the STREAM-START token and append it to the queue.
+ token := yaml_token_t{
+ typ: yaml_STREAM_START_TOKEN,
+ start_mark: parser.mark,
+ end_mark: parser.mark,
+ encoding: parser.encoding,
+ }
+ yaml_insert_token(parser, -1, &token)
+ return true
+}
+
+// Produce the STREAM-END token and shut down the scanner.
+func yaml_parser_fetch_stream_end(parser *yaml_parser_t) bool {
+
+ // Force new line.
+ if parser.mark.column != 0 {
+ parser.mark.column = 0
+ parser.mark.line++
+ }
+
+ // Reset the indentation level.
+ if !yaml_parser_unroll_indent(parser, -1) {
+ return false
+ }
+
+ // Reset simple keys.
+ if !yaml_parser_remove_simple_key(parser) {
+ return false
+ }
+
+ parser.simple_key_allowed = false
+
+ // Create the STREAM-END token and append it to the queue.
+ token := yaml_token_t{
+ typ: yaml_STREAM_END_TOKEN,
+ start_mark: parser.mark,
+ end_mark: parser.mark,
+ }
+ yaml_insert_token(parser, -1, &token)
+ return true
+}
+
+// Produce a VERSION-DIRECTIVE or TAG-DIRECTIVE token.
+func yaml_parser_fetch_directive(parser *yaml_parser_t) bool {
+ // Reset the indentation level.
+ if !yaml_parser_unroll_indent(parser, -1) {
+ return false
+ }
+
+ // Reset simple keys.
+ if !yaml_parser_remove_simple_key(parser) {
+ return false
+ }
+
+ parser.simple_key_allowed = false
+
+ // Create the YAML-DIRECTIVE or TAG-DIRECTIVE token.
+ token := yaml_token_t{}
+ if !yaml_parser_scan_directive(parser, &token) {
+ return false
+ }
+ // Append the token to the queue.
+ yaml_insert_token(parser, -1, &token)
+ return true
+}
+
+// Produce the DOCUMENT-START or DOCUMENT-END token.
+func yaml_parser_fetch_document_indicator(parser *yaml_parser_t, typ yaml_token_type_t) bool {
+ // Reset the indentation level.
+ if !yaml_parser_unroll_indent(parser, -1) {
+ return false
+ }
+
+ // Reset simple keys.
+ if !yaml_parser_remove_simple_key(parser) {
+ return false
+ }
+
+ parser.simple_key_allowed = false
+
+ // Consume the token.
+ start_mark := parser.mark
+
+ skip(parser)
+ skip(parser)
+ skip(parser)
+
+ end_mark := parser.mark
+
+ // Create the DOCUMENT-START or DOCUMENT-END token.
+ token := yaml_token_t{
+ typ: typ,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ }
+ // Append the token to the queue.
+ yaml_insert_token(parser, -1, &token)
+ return true
+}
+
+// Produce the FLOW-SEQUENCE-START or FLOW-MAPPING-START token.
+func yaml_parser_fetch_flow_collection_start(parser *yaml_parser_t, typ yaml_token_type_t) bool {
+ // The indicators '[' and '{' may start a simple key.
+ if !yaml_parser_save_simple_key(parser) {
+ return false
+ }
+
+ // Increase the flow level.
+ if !yaml_parser_increase_flow_level(parser) {
+ return false
+ }
+
+ // A simple key may follow the indicators '[' and '{'.
+ parser.simple_key_allowed = true
+
+ // Consume the token.
+ start_mark := parser.mark
+ skip(parser)
+ end_mark := parser.mark
+
+ // Create the FLOW-SEQUENCE-START of FLOW-MAPPING-START token.
+ token := yaml_token_t{
+ typ: typ,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ }
+ // Append the token to the queue.
+ yaml_insert_token(parser, -1, &token)
+ return true
+}
+
+// Produce the FLOW-SEQUENCE-END or FLOW-MAPPING-END token.
+func yaml_parser_fetch_flow_collection_end(parser *yaml_parser_t, typ yaml_token_type_t) bool {
+ // Reset any potential simple key on the current flow level.
+ if !yaml_parser_remove_simple_key(parser) {
+ return false
+ }
+
+ // Decrease the flow level.
+ if !yaml_parser_decrease_flow_level(parser) {
+ return false
+ }
+
+ // No simple keys after the indicators ']' and '}'.
+ parser.simple_key_allowed = false
+
+ // Consume the token.
+
+ start_mark := parser.mark
+ skip(parser)
+ end_mark := parser.mark
+
+ // Create the FLOW-SEQUENCE-END of FLOW-MAPPING-END token.
+ token := yaml_token_t{
+ typ: typ,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ }
+ // Append the token to the queue.
+ yaml_insert_token(parser, -1, &token)
+ return true
+}
+
+// Produce the FLOW-ENTRY token.
+func yaml_parser_fetch_flow_entry(parser *yaml_parser_t) bool {
+ // Reset any potential simple keys on the current flow level.
+ if !yaml_parser_remove_simple_key(parser) {
+ return false
+ }
+
+ // Simple keys are allowed after ','.
+ parser.simple_key_allowed = true
+
+ // Consume the token.
+ start_mark := parser.mark
+ skip(parser)
+ end_mark := parser.mark
+
+ // Create the FLOW-ENTRY token and append it to the queue.
+ token := yaml_token_t{
+ typ: yaml_FLOW_ENTRY_TOKEN,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ }
+ yaml_insert_token(parser, -1, &token)
+ return true
+}
+
+// Produce the BLOCK-ENTRY token.
+func yaml_parser_fetch_block_entry(parser *yaml_parser_t) bool {
+ // Check if the scanner is in the block context.
+ if parser.flow_level == 0 {
+ // Check if we are allowed to start a new entry.
+ if !parser.simple_key_allowed {
+ return yaml_parser_set_scanner_error(parser, "", parser.mark,
+ "block sequence entries are not allowed in this context")
+ }
+ // Add the BLOCK-SEQUENCE-START token if needed.
+ if !yaml_parser_roll_indent(parser, parser.mark.column, -1, yaml_BLOCK_SEQUENCE_START_TOKEN, parser.mark) {
+ return false
+ }
+ } else {
+ // It is an error for the '-' indicator to occur in the flow context,
+ // but we let the Parser detect and report about it because the Parser
+ // is able to point to the context.
+ }
+
+ // Reset any potential simple keys on the current flow level.
+ if !yaml_parser_remove_simple_key(parser) {
+ return false
+ }
+
+ // Simple keys are allowed after '-'.
+ parser.simple_key_allowed = true
+
+ // Consume the token.
+ start_mark := parser.mark
+ skip(parser)
+ end_mark := parser.mark
+
+ // Create the BLOCK-ENTRY token and append it to the queue.
+ token := yaml_token_t{
+ typ: yaml_BLOCK_ENTRY_TOKEN,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ }
+ yaml_insert_token(parser, -1, &token)
+ return true
+}
+
+// Produce the KEY token.
+func yaml_parser_fetch_key(parser *yaml_parser_t) bool {
+
+ // In the block context, additional checks are required.
+ if parser.flow_level == 0 {
+ // Check if we are allowed to start a new key (not nessesary simple).
+ if !parser.simple_key_allowed {
+ return yaml_parser_set_scanner_error(parser, "", parser.mark,
+ "mapping keys are not allowed in this context")
+ }
+ // Add the BLOCK-MAPPING-START token if needed.
+ if !yaml_parser_roll_indent(parser, parser.mark.column, -1, yaml_BLOCK_MAPPING_START_TOKEN, parser.mark) {
+ return false
+ }
+ }
+
+ // Reset any potential simple keys on the current flow level.
+ if !yaml_parser_remove_simple_key(parser) {
+ return false
+ }
+
+ // Simple keys are allowed after '?' in the block context.
+ parser.simple_key_allowed = parser.flow_level == 0
+
+ // Consume the token.
+ start_mark := parser.mark
+ skip(parser)
+ end_mark := parser.mark
+
+ // Create the KEY token and append it to the queue.
+ token := yaml_token_t{
+ typ: yaml_KEY_TOKEN,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ }
+ yaml_insert_token(parser, -1, &token)
+ return true
+}
+
+// Produce the VALUE token.
+func yaml_parser_fetch_value(parser *yaml_parser_t) bool {
+
+ simple_key := &parser.simple_keys[len(parser.simple_keys)-1]
+
+ // Have we found a simple key?
+ if simple_key.possible {
+ // Create the KEY token and insert it into the queue.
+ token := yaml_token_t{
+ typ: yaml_KEY_TOKEN,
+ start_mark: simple_key.mark,
+ end_mark: simple_key.mark,
+ }
+ yaml_insert_token(parser, simple_key.token_number-parser.tokens_parsed, &token)
+
+ // In the block context, we may need to add the BLOCK-MAPPING-START token.
+ if !yaml_parser_roll_indent(parser, simple_key.mark.column,
+ simple_key.token_number,
+ yaml_BLOCK_MAPPING_START_TOKEN, simple_key.mark) {
+ return false
+ }
+
+ // Remove the simple key.
+ simple_key.possible = false
+
+ // A simple key cannot follow another simple key.
+ parser.simple_key_allowed = false
+
+ } else {
+ // The ':' indicator follows a complex key.
+
+ // In the block context, extra checks are required.
+ if parser.flow_level == 0 {
+
+ // Check if we are allowed to start a complex value.
+ if !parser.simple_key_allowed {
+ return yaml_parser_set_scanner_error(parser, "", parser.mark,
+ "mapping values are not allowed in this context")
+ }
+
+ // Add the BLOCK-MAPPING-START token if needed.
+ if !yaml_parser_roll_indent(parser, parser.mark.column, -1, yaml_BLOCK_MAPPING_START_TOKEN, parser.mark) {
+ return false
+ }
+ }
+
+ // Simple keys after ':' are allowed in the block context.
+ parser.simple_key_allowed = parser.flow_level == 0
+ }
+
+ // Consume the token.
+ start_mark := parser.mark
+ skip(parser)
+ end_mark := parser.mark
+
+ // Create the VALUE token and append it to the queue.
+ token := yaml_token_t{
+ typ: yaml_VALUE_TOKEN,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ }
+ yaml_insert_token(parser, -1, &token)
+ return true
+}
+
+// Produce the ALIAS or ANCHOR token.
+func yaml_parser_fetch_anchor(parser *yaml_parser_t, typ yaml_token_type_t) bool {
+ // An anchor or an alias could be a simple key.
+ if !yaml_parser_save_simple_key(parser) {
+ return false
+ }
+
+ // A simple key cannot follow an anchor or an alias.
+ parser.simple_key_allowed = false
+
+ // Create the ALIAS or ANCHOR token and append it to the queue.
+ var token yaml_token_t
+ if !yaml_parser_scan_anchor(parser, &token, typ) {
+ return false
+ }
+ yaml_insert_token(parser, -1, &token)
+ return true
+}
+
+// Produce the TAG token.
+func yaml_parser_fetch_tag(parser *yaml_parser_t) bool {
+ // A tag could be a simple key.
+ if !yaml_parser_save_simple_key(parser) {
+ return false
+ }
+
+ // A simple key cannot follow a tag.
+ parser.simple_key_allowed = false
+
+ // Create the TAG token and append it to the queue.
+ var token yaml_token_t
+ if !yaml_parser_scan_tag(parser, &token) {
+ return false
+ }
+ yaml_insert_token(parser, -1, &token)
+ return true
+}
+
+// Produce the SCALAR(...,literal) or SCALAR(...,folded) tokens.
+func yaml_parser_fetch_block_scalar(parser *yaml_parser_t, literal bool) bool {
+ // Remove any potential simple keys.
+ if !yaml_parser_remove_simple_key(parser) {
+ return false
+ }
+
+ // A simple key may follow a block scalar.
+ parser.simple_key_allowed = true
+
+ // Create the SCALAR token and append it to the queue.
+ var token yaml_token_t
+ if !yaml_parser_scan_block_scalar(parser, &token, literal) {
+ return false
+ }
+ yaml_insert_token(parser, -1, &token)
+ return true
+}
+
+// Produce the SCALAR(...,single-quoted) or SCALAR(...,double-quoted) tokens.
+func yaml_parser_fetch_flow_scalar(parser *yaml_parser_t, single bool) bool {
+ // A plain scalar could be a simple key.
+ if !yaml_parser_save_simple_key(parser) {
+ return false
+ }
+
+ // A simple key cannot follow a flow scalar.
+ parser.simple_key_allowed = false
+
+ // Create the SCALAR token and append it to the queue.
+ var token yaml_token_t
+ if !yaml_parser_scan_flow_scalar(parser, &token, single) {
+ return false
+ }
+ yaml_insert_token(parser, -1, &token)
+ return true
+}
+
+// Produce the SCALAR(...,plain) token.
+func yaml_parser_fetch_plain_scalar(parser *yaml_parser_t) bool {
+ // A plain scalar could be a simple key.
+ if !yaml_parser_save_simple_key(parser) {
+ return false
+ }
+
+ // A simple key cannot follow a flow scalar.
+ parser.simple_key_allowed = false
+
+ // Create the SCALAR token and append it to the queue.
+ var token yaml_token_t
+ if !yaml_parser_scan_plain_scalar(parser, &token) {
+ return false
+ }
+ yaml_insert_token(parser, -1, &token)
+ return true
+}
+
+// Eat whitespaces and comments until the next token is found.
+func yaml_parser_scan_to_next_token(parser *yaml_parser_t) bool {
+
+ // Until the next token is not found.
+ for {
+ // Allow the BOM mark to start a line.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ if parser.mark.column == 0 && is_bom(parser.buffer, parser.buffer_pos) {
+ skip(parser)
+ }
+
+ // Eat whitespaces.
+ // Tabs are allowed:
+ // - in the flow context
+ // - in the block context, but not at the beginning of the line or
+ // after '-', '?', or ':' (complex value).
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+
+ for parser.buffer[parser.buffer_pos] == ' ' || ((parser.flow_level > 0 || !parser.simple_key_allowed) && parser.buffer[parser.buffer_pos] == '\t') {
+ skip(parser)
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+
+ // Eat a comment until a line break.
+ if parser.buffer[parser.buffer_pos] == '#' {
+ for !is_breakz(parser.buffer, parser.buffer_pos) {
+ skip(parser)
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+ }
+
+ // If it is a line break, eat it.
+ if is_break(parser.buffer, parser.buffer_pos) {
+ if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+ return false
+ }
+ skip_line(parser)
+
+ // In the block context, a new line may start a simple key.
+ if parser.flow_level == 0 {
+ parser.simple_key_allowed = true
+ }
+ } else {
+ break // We have found a token.
+ }
+ }
+
+ return true
+}
+
+// Scan a YAML-DIRECTIVE or TAG-DIRECTIVE token.
+//
+// Scope:
+// %YAML 1.1 # a comment \n
+// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+// %TAG !yaml! tag:yaml.org,2002: \n
+// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+//
+func yaml_parser_scan_directive(parser *yaml_parser_t, token *yaml_token_t) bool {
+ // Eat '%'.
+ start_mark := parser.mark
+ skip(parser)
+
+ // Scan the directive name.
+ var name []byte
+ if !yaml_parser_scan_directive_name(parser, start_mark, &name) {
+ return false
+ }
+
+ // Is it a YAML directive?
+ if bytes.Equal(name, []byte("YAML")) {
+ // Scan the VERSION directive value.
+ var major, minor int8
+ if !yaml_parser_scan_version_directive_value(parser, start_mark, &major, &minor) {
+ return false
+ }
+ end_mark := parser.mark
+
+ // Create a VERSION-DIRECTIVE token.
+ *token = yaml_token_t{
+ typ: yaml_VERSION_DIRECTIVE_TOKEN,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ major: major,
+ minor: minor,
+ }
+
+ // Is it a TAG directive?
+ } else if bytes.Equal(name, []byte("TAG")) {
+ // Scan the TAG directive value.
+ var handle, prefix []byte
+ if !yaml_parser_scan_tag_directive_value(parser, start_mark, &handle, &prefix) {
+ return false
+ }
+ end_mark := parser.mark
+
+ // Create a TAG-DIRECTIVE token.
+ *token = yaml_token_t{
+ typ: yaml_TAG_DIRECTIVE_TOKEN,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ value: handle,
+ prefix: prefix,
+ }
+
+ // Unknown directive.
+ } else {
+ yaml_parser_set_scanner_error(parser, "while scanning a directive",
+ start_mark, "found unknown directive name")
+ return false
+ }
+
+ // Eat the rest of the line including any comments.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+
+ for is_blank(parser.buffer, parser.buffer_pos) {
+ skip(parser)
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+
+ if parser.buffer[parser.buffer_pos] == '#' {
+ for !is_breakz(parser.buffer, parser.buffer_pos) {
+ skip(parser)
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+ }
+
+ // Check if we are at the end of the line.
+ if !is_breakz(parser.buffer, parser.buffer_pos) {
+ yaml_parser_set_scanner_error(parser, "while scanning a directive",
+ start_mark, "did not find expected comment or line break")
+ return false
+ }
+
+ // Eat a line break.
+ if is_break(parser.buffer, parser.buffer_pos) {
+ if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+ return false
+ }
+ skip_line(parser)
+ }
+
+ return true
+}
+
+// Scan the directive name.
+//
+// Scope:
+// %YAML 1.1 # a comment \n
+// ^^^^
+// %TAG !yaml! tag:yaml.org,2002: \n
+// ^^^
+//
+func yaml_parser_scan_directive_name(parser *yaml_parser_t, start_mark yaml_mark_t, name *[]byte) bool {
+ // Consume the directive name.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+
+ var s []byte
+ for is_alpha(parser.buffer, parser.buffer_pos) {
+ s = read(parser, s)
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+
+ // Check if the name is empty.
+ if len(s) == 0 {
+ yaml_parser_set_scanner_error(parser, "while scanning a directive",
+ start_mark, "could not find expected directive name")
+ return false
+ }
+
+ // Check for an blank character after the name.
+ if !is_blankz(parser.buffer, parser.buffer_pos) {
+ yaml_parser_set_scanner_error(parser, "while scanning a directive",
+ start_mark, "found unexpected non-alphabetical character")
+ return false
+ }
+ *name = s
+ return true
+}
+
+// Scan the value of VERSION-DIRECTIVE.
+//
+// Scope:
+// %YAML 1.1 # a comment \n
+// ^^^^^^
+func yaml_parser_scan_version_directive_value(parser *yaml_parser_t, start_mark yaml_mark_t, major, minor *int8) bool {
+ // Eat whitespaces.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ for is_blank(parser.buffer, parser.buffer_pos) {
+ skip(parser)
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+
+ // Consume the major version number.
+ if !yaml_parser_scan_version_directive_number(parser, start_mark, major) {
+ return false
+ }
+
+ // Eat '.'.
+ if parser.buffer[parser.buffer_pos] != '.' {
+ return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
+ start_mark, "did not find expected digit or '.' character")
+ }
+
+ skip(parser)
+
+ // Consume the minor version number.
+ if !yaml_parser_scan_version_directive_number(parser, start_mark, minor) {
+ return false
+ }
+ return true
+}
+
+const max_number_length = 2
+
+// Scan the version number of VERSION-DIRECTIVE.
+//
+// Scope:
+// %YAML 1.1 # a comment \n
+// ^
+// %YAML 1.1 # a comment \n
+// ^
+func yaml_parser_scan_version_directive_number(parser *yaml_parser_t, start_mark yaml_mark_t, number *int8) bool {
+
+ // Repeat while the next character is digit.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ var value, length int8
+ for is_digit(parser.buffer, parser.buffer_pos) {
+ // Check if the number is too long.
+ length++
+ if length > max_number_length {
+ return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
+ start_mark, "found extremely long version number")
+ }
+ value = value*10 + int8(as_digit(parser.buffer, parser.buffer_pos))
+ skip(parser)
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+
+ // Check if the number was present.
+ if length == 0 {
+ return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
+ start_mark, "did not find expected version number")
+ }
+ *number = value
+ return true
+}
+
+// Scan the value of a TAG-DIRECTIVE token.
+//
+// Scope:
+// %TAG !yaml! tag:yaml.org,2002: \n
+// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+//
+func yaml_parser_scan_tag_directive_value(parser *yaml_parser_t, start_mark yaml_mark_t, handle, prefix *[]byte) bool {
+ var handle_value, prefix_value []byte
+
+ // Eat whitespaces.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+
+ for is_blank(parser.buffer, parser.buffer_pos) {
+ skip(parser)
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+
+ // Scan a handle.
+ if !yaml_parser_scan_tag_handle(parser, true, start_mark, &handle_value) {
+ return false
+ }
+
+ // Expect a whitespace.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ if !is_blank(parser.buffer, parser.buffer_pos) {
+ yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive",
+ start_mark, "did not find expected whitespace")
+ return false
+ }
+
+ // Eat whitespaces.
+ for is_blank(parser.buffer, parser.buffer_pos) {
+ skip(parser)
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+
+ // Scan a prefix.
+ if !yaml_parser_scan_tag_uri(parser, true, nil, start_mark, &prefix_value) {
+ return false
+ }
+
+ // Expect a whitespace or line break.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ if !is_blankz(parser.buffer, parser.buffer_pos) {
+ yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive",
+ start_mark, "did not find expected whitespace or line break")
+ return false
+ }
+
+ *handle = handle_value
+ *prefix = prefix_value
+ return true
+}
+
+func yaml_parser_scan_anchor(parser *yaml_parser_t, token *yaml_token_t, typ yaml_token_type_t) bool {
+ var s []byte
+
+ // Eat the indicator character.
+ start_mark := parser.mark
+ skip(parser)
+
+ // Consume the value.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+
+ for is_alpha(parser.buffer, parser.buffer_pos) {
+ s = read(parser, s)
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+
+ end_mark := parser.mark
+
+ /*
+ * Check if length of the anchor is greater than 0 and it is followed by
+ * a whitespace character or one of the indicators:
+ *
+ * '?', ':', ',', ']', '}', '%', '@', '`'.
+ */
+
+ if len(s) == 0 ||
+ !(is_blankz(parser.buffer, parser.buffer_pos) || parser.buffer[parser.buffer_pos] == '?' ||
+ parser.buffer[parser.buffer_pos] == ':' || parser.buffer[parser.buffer_pos] == ',' ||
+ parser.buffer[parser.buffer_pos] == ']' || parser.buffer[parser.buffer_pos] == '}' ||
+ parser.buffer[parser.buffer_pos] == '%' || parser.buffer[parser.buffer_pos] == '@' ||
+ parser.buffer[parser.buffer_pos] == '`') {
+ context := "while scanning an alias"
+ if typ == yaml_ANCHOR_TOKEN {
+ context = "while scanning an anchor"
+ }
+ yaml_parser_set_scanner_error(parser, context, start_mark,
+ "did not find expected alphabetic or numeric character")
+ return false
+ }
+
+ // Create a token.
+ *token = yaml_token_t{
+ typ: typ,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ value: s,
+ }
+
+ return true
+}
+
+/*
+ * Scan a TAG token.
+ */
+
+func yaml_parser_scan_tag(parser *yaml_parser_t, token *yaml_token_t) bool {
+ var handle, suffix []byte
+
+ start_mark := parser.mark
+
+ // Check if the tag is in the canonical form.
+ if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+ return false
+ }
+
+ if parser.buffer[parser.buffer_pos+1] == '<' {
+ // Keep the handle as ''
+
+ // Eat '!<'
+ skip(parser)
+ skip(parser)
+
+ // Consume the tag value.
+ if !yaml_parser_scan_tag_uri(parser, false, nil, start_mark, &suffix) {
+ return false
+ }
+
+ // Check for '>' and eat it.
+ if parser.buffer[parser.buffer_pos] != '>' {
+ yaml_parser_set_scanner_error(parser, "while scanning a tag",
+ start_mark, "did not find the expected '>'")
+ return false
+ }
+
+ skip(parser)
+ } else {
+ // The tag has either the '!suffix' or the '!handle!suffix' form.
+
+ // First, try to scan a handle.
+ if !yaml_parser_scan_tag_handle(parser, false, start_mark, &handle) {
+ return false
+ }
+
+ // Check if it is, indeed, handle.
+ if handle[0] == '!' && len(handle) > 1 && handle[len(handle)-1] == '!' {
+ // Scan the suffix now.
+ if !yaml_parser_scan_tag_uri(parser, false, nil, start_mark, &suffix) {
+ return false
+ }
+ } else {
+ // It wasn't a handle after all. Scan the rest of the tag.
+ if !yaml_parser_scan_tag_uri(parser, false, handle, start_mark, &suffix) {
+ return false
+ }
+
+ // Set the handle to '!'.
+ handle = []byte{'!'}
+
+ // A special case: the '!' tag. Set the handle to '' and the
+ // suffix to '!'.
+ if len(suffix) == 0 {
+ handle, suffix = suffix, handle
+ }
+ }
+ }
+
+ // Check the character which ends the tag.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ if !is_blankz(parser.buffer, parser.buffer_pos) {
+ yaml_parser_set_scanner_error(parser, "while scanning a tag",
+ start_mark, "did not find expected whitespace or line break")
+ return false
+ }
+
+ end_mark := parser.mark
+
+ // Create a token.
+ *token = yaml_token_t{
+ typ: yaml_TAG_TOKEN,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ value: handle,
+ suffix: suffix,
+ }
+ return true
+}
+
+// Scan a tag handle.
+func yaml_parser_scan_tag_handle(parser *yaml_parser_t, directive bool, start_mark yaml_mark_t, handle *[]byte) bool {
+ // Check the initial '!' character.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ if parser.buffer[parser.buffer_pos] != '!' {
+ yaml_parser_set_scanner_tag_error(parser, directive,
+ start_mark, "did not find expected '!'")
+ return false
+ }
+
+ var s []byte
+
+ // Copy the '!' character.
+ s = read(parser, s)
+
+ // Copy all subsequent alphabetical and numerical characters.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ for is_alpha(parser.buffer, parser.buffer_pos) {
+ s = read(parser, s)
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+
+ // Check if the trailing character is '!' and copy it.
+ if parser.buffer[parser.buffer_pos] == '!' {
+ s = read(parser, s)
+ } else {
+ // It's either the '!' tag or not really a tag handle. If it's a %TAG
+ // directive, it's an error. If it's a tag token, it must be a part of URI.
+ if directive && string(s) != "!" {
+ yaml_parser_set_scanner_tag_error(parser, directive,
+ start_mark, "did not find expected '!'")
+ return false
+ }
+ }
+
+ *handle = s
+ return true
+}
+
+// Scan a tag.
+func yaml_parser_scan_tag_uri(parser *yaml_parser_t, directive bool, head []byte, start_mark yaml_mark_t, uri *[]byte) bool {
+ //size_t length = head ? strlen((char *)head) : 0
+ var s []byte
+ hasTag := len(head) > 0
+
+ // Copy the head if needed.
+ //
+ // Note that we don't copy the leading '!' character.
+ if len(head) > 1 {
+ s = append(s, head[1:]...)
+ }
+
+ // Scan the tag.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+
+ // The set of characters that may appear in URI is as follows:
+ //
+ // '0'-'9', 'A'-'Z', 'a'-'z', '_', '-', ';', '/', '?', ':', '@', '&',
+ // '=', '+', '$', ',', '.', '!', '~', '*', '\'', '(', ')', '[', ']',
+ // '%'.
+ // [Go] Convert this into more reasonable logic.
+ for is_alpha(parser.buffer, parser.buffer_pos) || parser.buffer[parser.buffer_pos] == ';' ||
+ parser.buffer[parser.buffer_pos] == '/' || parser.buffer[parser.buffer_pos] == '?' ||
+ parser.buffer[parser.buffer_pos] == ':' || parser.buffer[parser.buffer_pos] == '@' ||
+ parser.buffer[parser.buffer_pos] == '&' || parser.buffer[parser.buffer_pos] == '=' ||
+ parser.buffer[parser.buffer_pos] == '+' || parser.buffer[parser.buffer_pos] == '$' ||
+ parser.buffer[parser.buffer_pos] == ',' || parser.buffer[parser.buffer_pos] == '.' ||
+ parser.buffer[parser.buffer_pos] == '!' || parser.buffer[parser.buffer_pos] == '~' ||
+ parser.buffer[parser.buffer_pos] == '*' || parser.buffer[parser.buffer_pos] == '\'' ||
+ parser.buffer[parser.buffer_pos] == '(' || parser.buffer[parser.buffer_pos] == ')' ||
+ parser.buffer[parser.buffer_pos] == '[' || parser.buffer[parser.buffer_pos] == ']' ||
+ parser.buffer[parser.buffer_pos] == '%' {
+ // Check if it is a URI-escape sequence.
+ if parser.buffer[parser.buffer_pos] == '%' {
+ if !yaml_parser_scan_uri_escapes(parser, directive, start_mark, &s) {
+ return false
+ }
+ } else {
+ s = read(parser, s)
+ }
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ hasTag = true
+ }
+
+ if !hasTag {
+ yaml_parser_set_scanner_tag_error(parser, directive,
+ start_mark, "did not find expected tag URI")
+ return false
+ }
+ *uri = s
+ return true
+}
+
+// Decode an URI-escape sequence corresponding to a single UTF-8 character.
+func yaml_parser_scan_uri_escapes(parser *yaml_parser_t, directive bool, start_mark yaml_mark_t, s *[]byte) bool {
+
+ // Decode the required number of characters.
+ w := 1024
+ for w > 0 {
+ // Check for a URI-escaped octet.
+ if parser.unread < 3 && !yaml_parser_update_buffer(parser, 3) {
+ return false
+ }
+
+ if !(parser.buffer[parser.buffer_pos] == '%' &&
+ is_hex(parser.buffer, parser.buffer_pos+1) &&
+ is_hex(parser.buffer, parser.buffer_pos+2)) {
+ return yaml_parser_set_scanner_tag_error(parser, directive,
+ start_mark, "did not find URI escaped octet")
+ }
+
+ // Get the octet.
+ octet := byte((as_hex(parser.buffer, parser.buffer_pos+1) << 4) + as_hex(parser.buffer, parser.buffer_pos+2))
+
+ // If it is the leading octet, determine the length of the UTF-8 sequence.
+ if w == 1024 {
+ w = width(octet)
+ if w == 0 {
+ return yaml_parser_set_scanner_tag_error(parser, directive,
+ start_mark, "found an incorrect leading UTF-8 octet")
+ }
+ } else {
+ // Check if the trailing octet is correct.
+ if octet&0xC0 != 0x80 {
+ return yaml_parser_set_scanner_tag_error(parser, directive,
+ start_mark, "found an incorrect trailing UTF-8 octet")
+ }
+ }
+
+ // Copy the octet and move the pointers.
+ *s = append(*s, octet)
+ skip(parser)
+ skip(parser)
+ skip(parser)
+ w--
+ }
+ return true
+}
+
+// Scan a block scalar.
+func yaml_parser_scan_block_scalar(parser *yaml_parser_t, token *yaml_token_t, literal bool) bool {
+ // Eat the indicator '|' or '>'.
+ start_mark := parser.mark
+ skip(parser)
+
+ // Scan the additional block scalar indicators.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+
+ // Check for a chomping indicator.
+ var chomping, increment int
+ if parser.buffer[parser.buffer_pos] == '+' || parser.buffer[parser.buffer_pos] == '-' {
+ // Set the chomping method and eat the indicator.
+ if parser.buffer[parser.buffer_pos] == '+' {
+ chomping = +1
+ } else {
+ chomping = -1
+ }
+ skip(parser)
+
+ // Check for an indentation indicator.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ if is_digit(parser.buffer, parser.buffer_pos) {
+ // Check that the indentation is greater than 0.
+ if parser.buffer[parser.buffer_pos] == '0' {
+ yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+ start_mark, "found an indentation indicator equal to 0")
+ return false
+ }
+
+ // Get the indentation level and eat the indicator.
+ increment = as_digit(parser.buffer, parser.buffer_pos)
+ skip(parser)
+ }
+
+ } else if is_digit(parser.buffer, parser.buffer_pos) {
+ // Do the same as above, but in the opposite order.
+
+ if parser.buffer[parser.buffer_pos] == '0' {
+ yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+ start_mark, "found an indentation indicator equal to 0")
+ return false
+ }
+ increment = as_digit(parser.buffer, parser.buffer_pos)
+ skip(parser)
+
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ if parser.buffer[parser.buffer_pos] == '+' || parser.buffer[parser.buffer_pos] == '-' {
+ if parser.buffer[parser.buffer_pos] == '+' {
+ chomping = +1
+ } else {
+ chomping = -1
+ }
+ skip(parser)
+ }
+ }
+
+ // Eat whitespaces and comments to the end of the line.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ for is_blank(parser.buffer, parser.buffer_pos) {
+ skip(parser)
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+ if parser.buffer[parser.buffer_pos] == '#' {
+ for !is_breakz(parser.buffer, parser.buffer_pos) {
+ skip(parser)
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+ }
+
+ // Check if we are at the end of the line.
+ if !is_breakz(parser.buffer, parser.buffer_pos) {
+ yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+ start_mark, "did not find expected comment or line break")
+ return false
+ }
+
+ // Eat a line break.
+ if is_break(parser.buffer, parser.buffer_pos) {
+ if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+ return false
+ }
+ skip_line(parser)
+ }
+
+ end_mark := parser.mark
+
+ // Set the indentation level if it was specified.
+ var indent int
+ if increment > 0 {
+ if parser.indent >= 0 {
+ indent = parser.indent + increment
+ } else {
+ indent = increment
+ }
+ }
+
+ // Scan the leading line breaks and determine the indentation level if needed.
+ var s, leading_break, trailing_breaks []byte
+ if !yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks, start_mark, &end_mark) {
+ return false
+ }
+
+ // Scan the block scalar content.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ var leading_blank, trailing_blank bool
+ for parser.mark.column == indent && !is_z(parser.buffer, parser.buffer_pos) {
+ // We are at the beginning of a non-empty line.
+
+ // Is it a trailing whitespace?
+ trailing_blank = is_blank(parser.buffer, parser.buffer_pos)
+
+ // Check if we need to fold the leading line break.
+ if !literal && !leading_blank && !trailing_blank && len(leading_break) > 0 && leading_break[0] == '\n' {
+ // Do we need to join the lines by space?
+ if len(trailing_breaks) == 0 {
+ s = append(s, ' ')
+ }
+ } else {
+ s = append(s, leading_break...)
+ }
+ leading_break = leading_break[:0]
+
+ // Append the remaining line breaks.
+ s = append(s, trailing_breaks...)
+ trailing_breaks = trailing_breaks[:0]
+
+ // Is it a leading whitespace?
+ leading_blank = is_blank(parser.buffer, parser.buffer_pos)
+
+ // Consume the current line.
+ for !is_breakz(parser.buffer, parser.buffer_pos) {
+ s = read(parser, s)
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+
+ // Consume the line break.
+ if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+ return false
+ }
+
+ leading_break = read_line(parser, leading_break)
+
+ // Eat the following indentation spaces and line breaks.
+ if !yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks, start_mark, &end_mark) {
+ return false
+ }
+ }
+
+ // Chomp the tail.
+ if chomping != -1 {
+ s = append(s, leading_break...)
+ }
+ if chomping == 1 {
+ s = append(s, trailing_breaks...)
+ }
+
+ // Create a token.
+ *token = yaml_token_t{
+ typ: yaml_SCALAR_TOKEN,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ value: s,
+ style: yaml_LITERAL_SCALAR_STYLE,
+ }
+ if !literal {
+ token.style = yaml_FOLDED_SCALAR_STYLE
+ }
+ return true
+}
+
+// Scan indentation spaces and line breaks for a block scalar. Determine the
+// indentation level if needed.
+func yaml_parser_scan_block_scalar_breaks(parser *yaml_parser_t, indent *int, breaks *[]byte, start_mark yaml_mark_t, end_mark *yaml_mark_t) bool {
+ *end_mark = parser.mark
+
+ // Eat the indentation spaces and line breaks.
+ max_indent := 0
+ for {
+ // Eat the indentation spaces.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ for (*indent == 0 || parser.mark.column < *indent) && is_space(parser.buffer, parser.buffer_pos) {
+ skip(parser)
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+ if parser.mark.column > max_indent {
+ max_indent = parser.mark.column
+ }
+
+ // Check for a tab character messing the indentation.
+ if (*indent == 0 || parser.mark.column < *indent) && is_tab(parser.buffer, parser.buffer_pos) {
+ return yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+ start_mark, "found a tab character where an indentation space is expected")
+ }
+
+ // Have we found a non-empty line?
+ if !is_break(parser.buffer, parser.buffer_pos) {
+ break
+ }
+
+ // Consume the line break.
+ if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+ return false
+ }
+ // [Go] Should really be returning breaks instead.
+ *breaks = read_line(parser, *breaks)
+ *end_mark = parser.mark
+ }
+
+ // Determine the indentation level if needed.
+ if *indent == 0 {
+ *indent = max_indent
+ if *indent < parser.indent+1 {
+ *indent = parser.indent + 1
+ }
+ if *indent < 1 {
+ *indent = 1
+ }
+ }
+ return true
+}
+
+// Scan a quoted scalar.
+func yaml_parser_scan_flow_scalar(parser *yaml_parser_t, token *yaml_token_t, single bool) bool {
+ // Eat the left quote.
+ start_mark := parser.mark
+ skip(parser)
+
+ // Consume the content of the quoted scalar.
+ var s, leading_break, trailing_breaks, whitespaces []byte
+ for {
+ // Check that there are no document indicators at the beginning of the line.
+ if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) {
+ return false
+ }
+
+ if parser.mark.column == 0 &&
+ ((parser.buffer[parser.buffer_pos+0] == '-' &&
+ parser.buffer[parser.buffer_pos+1] == '-' &&
+ parser.buffer[parser.buffer_pos+2] == '-') ||
+ (parser.buffer[parser.buffer_pos+0] == '.' &&
+ parser.buffer[parser.buffer_pos+1] == '.' &&
+ parser.buffer[parser.buffer_pos+2] == '.')) &&
+ is_blankz(parser.buffer, parser.buffer_pos+3) {
+ yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar",
+ start_mark, "found unexpected document indicator")
+ return false
+ }
+
+ // Check for EOF.
+ if is_z(parser.buffer, parser.buffer_pos) {
+ yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar",
+ start_mark, "found unexpected end of stream")
+ return false
+ }
+
+ // Consume non-blank characters.
+ leading_blanks := false
+ for !is_blankz(parser.buffer, parser.buffer_pos) {
+ if single && parser.buffer[parser.buffer_pos] == '\'' && parser.buffer[parser.buffer_pos+1] == '\'' {
+ // Is is an escaped single quote.
+ s = append(s, '\'')
+ skip(parser)
+ skip(parser)
+
+ } else if single && parser.buffer[parser.buffer_pos] == '\'' {
+ // It is a right single quote.
+ break
+ } else if !single && parser.buffer[parser.buffer_pos] == '"' {
+ // It is a right double quote.
+ break
+
+ } else if !single && parser.buffer[parser.buffer_pos] == '\\' && is_break(parser.buffer, parser.buffer_pos+1) {
+ // It is an escaped line break.
+ if parser.unread < 3 && !yaml_parser_update_buffer(parser, 3) {
+ return false
+ }
+ skip(parser)
+ skip_line(parser)
+ leading_blanks = true
+ break
+
+ } else if !single && parser.buffer[parser.buffer_pos] == '\\' {
+ // It is an escape sequence.
+ code_length := 0
+
+ // Check the escape character.
+ switch parser.buffer[parser.buffer_pos+1] {
+ case '0':
+ s = append(s, 0)
+ case 'a':
+ s = append(s, '\x07')
+ case 'b':
+ s = append(s, '\x08')
+ case 't', '\t':
+ s = append(s, '\x09')
+ case 'n':
+ s = append(s, '\x0A')
+ case 'v':
+ s = append(s, '\x0B')
+ case 'f':
+ s = append(s, '\x0C')
+ case 'r':
+ s = append(s, '\x0D')
+ case 'e':
+ s = append(s, '\x1B')
+ case ' ':
+ s = append(s, '\x20')
+ case '"':
+ s = append(s, '"')
+ case '\'':
+ s = append(s, '\'')
+ case '\\':
+ s = append(s, '\\')
+ case 'N': // NEL (#x85)
+ s = append(s, '\xC2')
+ s = append(s, '\x85')
+ case '_': // #xA0
+ s = append(s, '\xC2')
+ s = append(s, '\xA0')
+ case 'L': // LS (#x2028)
+ s = append(s, '\xE2')
+ s = append(s, '\x80')
+ s = append(s, '\xA8')
+ case 'P': // PS (#x2029)
+ s = append(s, '\xE2')
+ s = append(s, '\x80')
+ s = append(s, '\xA9')
+ case 'x':
+ code_length = 2
+ case 'u':
+ code_length = 4
+ case 'U':
+ code_length = 8
+ default:
+ yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
+ start_mark, "found unknown escape character")
+ return false
+ }
+
+ skip(parser)
+ skip(parser)
+
+ // Consume an arbitrary escape code.
+ if code_length > 0 {
+ var value int
+
+ // Scan the character value.
+ if parser.unread < code_length && !yaml_parser_update_buffer(parser, code_length) {
+ return false
+ }
+ for k := 0; k < code_length; k++ {
+ if !is_hex(parser.buffer, parser.buffer_pos+k) {
+ yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
+ start_mark, "did not find expected hexdecimal number")
+ return false
+ }
+ value = (value << 4) + as_hex(parser.buffer, parser.buffer_pos+k)
+ }
+
+ // Check the value and write the character.
+ if (value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF {
+ yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
+ start_mark, "found invalid Unicode character escape code")
+ return false
+ }
+ if value <= 0x7F {
+ s = append(s, byte(value))
+ } else if value <= 0x7FF {
+ s = append(s, byte(0xC0+(value>>6)))
+ s = append(s, byte(0x80+(value&0x3F)))
+ } else if value <= 0xFFFF {
+ s = append(s, byte(0xE0+(value>>12)))
+ s = append(s, byte(0x80+((value>>6)&0x3F)))
+ s = append(s, byte(0x80+(value&0x3F)))
+ } else {
+ s = append(s, byte(0xF0+(value>>18)))
+ s = append(s, byte(0x80+((value>>12)&0x3F)))
+ s = append(s, byte(0x80+((value>>6)&0x3F)))
+ s = append(s, byte(0x80+(value&0x3F)))
+ }
+
+ // Advance the pointer.
+ for k := 0; k < code_length; k++ {
+ skip(parser)
+ }
+ }
+ } else {
+ // It is a non-escaped non-blank character.
+ s = read(parser, s)
+ }
+ if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+ return false
+ }
+ }
+
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+
+ // Check if we are at the end of the scalar.
+ if single {
+ if parser.buffer[parser.buffer_pos] == '\'' {
+ break
+ }
+ } else {
+ if parser.buffer[parser.buffer_pos] == '"' {
+ break
+ }
+ }
+
+ // Consume blank characters.
+ for is_blank(parser.buffer, parser.buffer_pos) || is_break(parser.buffer, parser.buffer_pos) {
+ if is_blank(parser.buffer, parser.buffer_pos) {
+ // Consume a space or a tab character.
+ if !leading_blanks {
+ whitespaces = read(parser, whitespaces)
+ } else {
+ skip(parser)
+ }
+ } else {
+ if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+ return false
+ }
+
+ // Check if it is a first line break.
+ if !leading_blanks {
+ whitespaces = whitespaces[:0]
+ leading_break = read_line(parser, leading_break)
+ leading_blanks = true
+ } else {
+ trailing_breaks = read_line(parser, trailing_breaks)
+ }
+ }
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+
+ // Join the whitespaces or fold line breaks.
+ if leading_blanks {
+ // Do we need to fold line breaks?
+ if len(leading_break) > 0 && leading_break[0] == '\n' {
+ if len(trailing_breaks) == 0 {
+ s = append(s, ' ')
+ } else {
+ s = append(s, trailing_breaks...)
+ }
+ } else {
+ s = append(s, leading_break...)
+ s = append(s, trailing_breaks...)
+ }
+ trailing_breaks = trailing_breaks[:0]
+ leading_break = leading_break[:0]
+ } else {
+ s = append(s, whitespaces...)
+ whitespaces = whitespaces[:0]
+ }
+ }
+
+ // Eat the right quote.
+ skip(parser)
+ end_mark := parser.mark
+
+ // Create a token.
+ *token = yaml_token_t{
+ typ: yaml_SCALAR_TOKEN,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ value: s,
+ style: yaml_SINGLE_QUOTED_SCALAR_STYLE,
+ }
+ if !single {
+ token.style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+ }
+ return true
+}
+
+// Scan a plain scalar.
+func yaml_parser_scan_plain_scalar(parser *yaml_parser_t, token *yaml_token_t) bool {
+
+ var s, leading_break, trailing_breaks, whitespaces []byte
+ var leading_blanks bool
+ var indent = parser.indent + 1
+
+ start_mark := parser.mark
+ end_mark := parser.mark
+
+ // Consume the content of the plain scalar.
+ for {
+ // Check for a document indicator.
+ if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) {
+ return false
+ }
+ if parser.mark.column == 0 &&
+ ((parser.buffer[parser.buffer_pos+0] == '-' &&
+ parser.buffer[parser.buffer_pos+1] == '-' &&
+ parser.buffer[parser.buffer_pos+2] == '-') ||
+ (parser.buffer[parser.buffer_pos+0] == '.' &&
+ parser.buffer[parser.buffer_pos+1] == '.' &&
+ parser.buffer[parser.buffer_pos+2] == '.')) &&
+ is_blankz(parser.buffer, parser.buffer_pos+3) {
+ break
+ }
+
+ // Check for a comment.
+ if parser.buffer[parser.buffer_pos] == '#' {
+ break
+ }
+
+ // Consume non-blank characters.
+ for !is_blankz(parser.buffer, parser.buffer_pos) {
+
+ // Check for indicators that may end a plain scalar.
+ if (parser.buffer[parser.buffer_pos] == ':' && is_blankz(parser.buffer, parser.buffer_pos+1)) ||
+ (parser.flow_level > 0 &&
+ (parser.buffer[parser.buffer_pos] == ',' ||
+ parser.buffer[parser.buffer_pos] == '?' || parser.buffer[parser.buffer_pos] == '[' ||
+ parser.buffer[parser.buffer_pos] == ']' || parser.buffer[parser.buffer_pos] == '{' ||
+ parser.buffer[parser.buffer_pos] == '}')) {
+ break
+ }
+
+ // Check if we need to join whitespaces and breaks.
+ if leading_blanks || len(whitespaces) > 0 {
+ if leading_blanks {
+ // Do we need to fold line breaks?
+ if leading_break[0] == '\n' {
+ if len(trailing_breaks) == 0 {
+ s = append(s, ' ')
+ } else {
+ s = append(s, trailing_breaks...)
+ }
+ } else {
+ s = append(s, leading_break...)
+ s = append(s, trailing_breaks...)
+ }
+ trailing_breaks = trailing_breaks[:0]
+ leading_break = leading_break[:0]
+ leading_blanks = false
+ } else {
+ s = append(s, whitespaces...)
+ whitespaces = whitespaces[:0]
+ }
+ }
+
+ // Copy the character.
+ s = read(parser, s)
+
+ end_mark = parser.mark
+ if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+ return false
+ }
+ }
+
+ // Is it the end?
+ if !(is_blank(parser.buffer, parser.buffer_pos) || is_break(parser.buffer, parser.buffer_pos)) {
+ break
+ }
+
+ // Consume blank characters.
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+
+ for is_blank(parser.buffer, parser.buffer_pos) || is_break(parser.buffer, parser.buffer_pos) {
+ if is_blank(parser.buffer, parser.buffer_pos) {
+
+ // Check for tab characters that abuse indentation.
+ if leading_blanks && parser.mark.column < indent && is_tab(parser.buffer, parser.buffer_pos) {
+ yaml_parser_set_scanner_error(parser, "while scanning a plain scalar",
+ start_mark, "found a tab character that violates indentation")
+ return false
+ }
+
+ // Consume a space or a tab character.
+ if !leading_blanks {
+ whitespaces = read(parser, whitespaces)
+ } else {
+ skip(parser)
+ }
+ } else {
+ if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+ return false
+ }
+
+ // Check if it is a first line break.
+ if !leading_blanks {
+ whitespaces = whitespaces[:0]
+ leading_break = read_line(parser, leading_break)
+ leading_blanks = true
+ } else {
+ trailing_breaks = read_line(parser, trailing_breaks)
+ }
+ }
+ if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+ return false
+ }
+ }
+
+ // Check indentation level.
+ if parser.flow_level == 0 && parser.mark.column < indent {
+ break
+ }
+ }
+
+ // Create a token.
+ *token = yaml_token_t{
+ typ: yaml_SCALAR_TOKEN,
+ start_mark: start_mark,
+ end_mark: end_mark,
+ value: s,
+ style: yaml_PLAIN_SCALAR_STYLE,
+ }
+
+ // Note that we change the 'simple_key_allowed' flag.
+ if leading_blanks {
+ parser.simple_key_allowed = true
+ }
+ return true
+}
diff --git a/vendor/gopkg.in/yaml.v2/sorter.go b/vendor/gopkg.in/yaml.v2/sorter.go
new file mode 100644
index 0000000..4c45e66
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/sorter.go
@@ -0,0 +1,113 @@
+package yaml
+
+import (
+ "reflect"
+ "unicode"
+)
+
+type keyList []reflect.Value
+
+func (l keyList) Len() int { return len(l) }
+func (l keyList) Swap(i, j int) { l[i], l[j] = l[j], l[i] }
+func (l keyList) Less(i, j int) bool {
+ a := l[i]
+ b := l[j]
+ ak := a.Kind()
+ bk := b.Kind()
+ for (ak == reflect.Interface || ak == reflect.Ptr) && !a.IsNil() {
+ a = a.Elem()
+ ak = a.Kind()
+ }
+ for (bk == reflect.Interface || bk == reflect.Ptr) && !b.IsNil() {
+ b = b.Elem()
+ bk = b.Kind()
+ }
+ af, aok := keyFloat(a)
+ bf, bok := keyFloat(b)
+ if aok && bok {
+ if af != bf {
+ return af < bf
+ }
+ if ak != bk {
+ return ak < bk
+ }
+ return numLess(a, b)
+ }
+ if ak != reflect.String || bk != reflect.String {
+ return ak < bk
+ }
+ ar, br := []rune(a.String()), []rune(b.String())
+ for i := 0; i < len(ar) && i < len(br); i++ {
+ if ar[i] == br[i] {
+ continue
+ }
+ al := unicode.IsLetter(ar[i])
+ bl := unicode.IsLetter(br[i])
+ if al && bl {
+ return ar[i] < br[i]
+ }
+ if al || bl {
+ return bl
+ }
+ var ai, bi int
+ var an, bn int64
+ if ar[i] == '0' || br[i] == '0' {
+ for j := i-1; j >= 0 && unicode.IsDigit(ar[j]); j-- {
+ if ar[j] != '0' {
+ an = 1
+ bn = 1
+ break
+ }
+ }
+ }
+ for ai = i; ai < len(ar) && unicode.IsDigit(ar[ai]); ai++ {
+ an = an*10 + int64(ar[ai]-'0')
+ }
+ for bi = i; bi < len(br) && unicode.IsDigit(br[bi]); bi++ {
+ bn = bn*10 + int64(br[bi]-'0')
+ }
+ if an != bn {
+ return an < bn
+ }
+ if ai != bi {
+ return ai < bi
+ }
+ return ar[i] < br[i]
+ }
+ return len(ar) < len(br)
+}
+
+// keyFloat returns a float value for v if it is a number/bool
+// and whether it is a number/bool or not.
+func keyFloat(v reflect.Value) (f float64, ok bool) {
+ switch v.Kind() {
+ case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+ return float64(v.Int()), true
+ case reflect.Float32, reflect.Float64:
+ return v.Float(), true
+ case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+ return float64(v.Uint()), true
+ case reflect.Bool:
+ if v.Bool() {
+ return 1, true
+ }
+ return 0, true
+ }
+ return 0, false
+}
+
+// numLess returns whether a < b.
+// a and b must necessarily have the same kind.
+func numLess(a, b reflect.Value) bool {
+ switch a.Kind() {
+ case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+ return a.Int() < b.Int()
+ case reflect.Float32, reflect.Float64:
+ return a.Float() < b.Float()
+ case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+ return a.Uint() < b.Uint()
+ case reflect.Bool:
+ return !a.Bool() && b.Bool()
+ }
+ panic("not a number")
+}
diff --git a/vendor/gopkg.in/yaml.v2/writerc.go b/vendor/gopkg.in/yaml.v2/writerc.go
new file mode 100644
index 0000000..a2dde60
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/writerc.go
@@ -0,0 +1,26 @@
+package yaml
+
+// Set the writer error and return false.
+func yaml_emitter_set_writer_error(emitter *yaml_emitter_t, problem string) bool {
+ emitter.error = yaml_WRITER_ERROR
+ emitter.problem = problem
+ return false
+}
+
+// Flush the output buffer.
+func yaml_emitter_flush(emitter *yaml_emitter_t) bool {
+ if emitter.write_handler == nil {
+ panic("write handler not set")
+ }
+
+ // Check if the buffer is empty.
+ if emitter.buffer_pos == 0 {
+ return true
+ }
+
+ if err := emitter.write_handler(emitter, emitter.buffer[:emitter.buffer_pos]); err != nil {
+ return yaml_emitter_set_writer_error(emitter, "write error: "+err.Error())
+ }
+ emitter.buffer_pos = 0
+ return true
+}
diff --git a/vendor/gopkg.in/yaml.v2/yaml.go b/vendor/gopkg.in/yaml.v2/yaml.go
new file mode 100644
index 0000000..de85aa4
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/yaml.go
@@ -0,0 +1,466 @@
+// Package yaml implements YAML support for the Go language.
+//
+// Source code and other details for the project are available at GitHub:
+//
+// https://github.com/go-yaml/yaml
+//
+package yaml
+
+import (
+ "errors"
+ "fmt"
+ "io"
+ "reflect"
+ "strings"
+ "sync"
+)
+
+// MapSlice encodes and decodes as a YAML map.
+// The order of keys is preserved when encoding and decoding.
+type MapSlice []MapItem
+
+// MapItem is an item in a MapSlice.
+type MapItem struct {
+ Key, Value interface{}
+}
+
+// The Unmarshaler interface may be implemented by types to customize their
+// behavior when being unmarshaled from a YAML document. The UnmarshalYAML
+// method receives a function that may be called to unmarshal the original
+// YAML value into a field or variable. It is safe to call the unmarshal
+// function parameter more than once if necessary.
+type Unmarshaler interface {
+ UnmarshalYAML(unmarshal func(interface{}) error) error
+}
+
+// The Marshaler interface may be implemented by types to customize their
+// behavior when being marshaled into a YAML document. The returned value
+// is marshaled in place of the original value implementing Marshaler.
+//
+// If an error is returned by MarshalYAML, the marshaling procedure stops
+// and returns with the provided error.
+type Marshaler interface {
+ MarshalYAML() (interface{}, error)
+}
+
+// Unmarshal decodes the first document found within the in byte slice
+// and assigns decoded values into the out value.
+//
+// Maps and pointers (to a struct, string, int, etc) are accepted as out
+// values. If an internal pointer within a struct is not initialized,
+// the yaml package will initialize it if necessary for unmarshalling
+// the provided data. The out parameter must not be nil.
+//
+// The type of the decoded values should be compatible with the respective
+// values in out. If one or more values cannot be decoded due to a type
+// mismatches, decoding continues partially until the end of the YAML
+// content, and a *yaml.TypeError is returned with details for all
+// missed values.
+//
+// Struct fields are only unmarshalled if they are exported (have an
+// upper case first letter), and are unmarshalled using the field name
+// lowercased as the default key. Custom keys may be defined via the
+// "yaml" name in the field tag: the content preceding the first comma
+// is used as the key, and the following comma-separated options are
+// used to tweak the marshalling process (see Marshal).
+// Conflicting names result in a runtime error.
+//
+// For example:
+//
+// type T struct {
+// F int `yaml:"a,omitempty"`
+// B int
+// }
+// var t T
+// yaml.Unmarshal([]byte("a: 1\nb: 2"), &t)
+//
+// See the documentation of Marshal for the format of tags and a list of
+// supported tag options.
+//
+func Unmarshal(in []byte, out interface{}) (err error) {
+ return unmarshal(in, out, false)
+}
+
+// UnmarshalStrict is like Unmarshal except that any fields that are found
+// in the data that do not have corresponding struct members, or mapping
+// keys that are duplicates, will result in
+// an error.
+func UnmarshalStrict(in []byte, out interface{}) (err error) {
+ return unmarshal(in, out, true)
+}
+
+// A Decorder reads and decodes YAML values from an input stream.
+type Decoder struct {
+ strict bool
+ parser *parser
+}
+
+// NewDecoder returns a new decoder that reads from r.
+//
+// The decoder introduces its own buffering and may read
+// data from r beyond the YAML values requested.
+func NewDecoder(r io.Reader) *Decoder {
+ return &Decoder{
+ parser: newParserFromReader(r),
+ }
+}
+
+// SetStrict sets whether strict decoding behaviour is enabled when
+// decoding items in the data (see UnmarshalStrict). By default, decoding is not strict.
+func (dec *Decoder) SetStrict(strict bool) {
+ dec.strict = strict
+}
+
+// Decode reads the next YAML-encoded value from its input
+// and stores it in the value pointed to by v.
+//
+// See the documentation for Unmarshal for details about the
+// conversion of YAML into a Go value.
+func (dec *Decoder) Decode(v interface{}) (err error) {
+ d := newDecoder(dec.strict)
+ defer handleErr(&err)
+ node := dec.parser.parse()
+ if node == nil {
+ return io.EOF
+ }
+ out := reflect.ValueOf(v)
+ if out.Kind() == reflect.Ptr && !out.IsNil() {
+ out = out.Elem()
+ }
+ d.unmarshal(node, out)
+ if len(d.terrors) > 0 {
+ return &TypeError{d.terrors}
+ }
+ return nil
+}
+
+func unmarshal(in []byte, out interface{}, strict bool) (err error) {
+ defer handleErr(&err)
+ d := newDecoder(strict)
+ p := newParser(in)
+ defer p.destroy()
+ node := p.parse()
+ if node != nil {
+ v := reflect.ValueOf(out)
+ if v.Kind() == reflect.Ptr && !v.IsNil() {
+ v = v.Elem()
+ }
+ d.unmarshal(node, v)
+ }
+ if len(d.terrors) > 0 {
+ return &TypeError{d.terrors}
+ }
+ return nil
+}
+
+// Marshal serializes the value provided into a YAML document. The structure
+// of the generated document will reflect the structure of the value itself.
+// Maps and pointers (to struct, string, int, etc) are accepted as the in value.
+//
+// Struct fields are only marshalled if they are exported (have an upper case
+// first letter), and are marshalled using the field name lowercased as the
+// default key. Custom keys may be defined via the "yaml" name in the field
+// tag: the content preceding the first comma is used as the key, and the
+// following comma-separated options are used to tweak the marshalling process.
+// Conflicting names result in a runtime error.
+//
+// The field tag format accepted is:
+//
+// `(...) yaml:"[<key>][,<flag1>[,<flag2>]]" (...)`
+//
+// The following flags are currently supported:
+//
+// omitempty Only include the field if it's not set to the zero
+// value for the type or to empty slices or maps.
+// Zero valued structs will be omitted if all their public
+// fields are zero, unless they implement an IsZero
+// method (see the IsZeroer interface type), in which
+// case the field will be included if that method returns true.
+//
+// flow Marshal using a flow style (useful for structs,
+// sequences and maps).
+//
+// inline Inline the field, which must be a struct or a map,
+// causing all of its fields or keys to be processed as if
+// they were part of the outer struct. For maps, keys must
+// not conflict with the yaml keys of other struct fields.
+//
+// In addition, if the key is "-", the field is ignored.
+//
+// For example:
+//
+// type T struct {
+// F int `yaml:"a,omitempty"`
+// B int
+// }
+// yaml.Marshal(&T{B: 2}) // Returns "b: 2\n"
+// yaml.Marshal(&T{F: 1}} // Returns "a: 1\nb: 0\n"
+//
+func Marshal(in interface{}) (out []byte, err error) {
+ defer handleErr(&err)
+ e := newEncoder()
+ defer e.destroy()
+ e.marshalDoc("", reflect.ValueOf(in))
+ e.finish()
+ out = e.out
+ return
+}
+
+// An Encoder writes YAML values to an output stream.
+type Encoder struct {
+ encoder *encoder
+}
+
+// NewEncoder returns a new encoder that writes to w.
+// The Encoder should be closed after use to flush all data
+// to w.
+func NewEncoder(w io.Writer) *Encoder {
+ return &Encoder{
+ encoder: newEncoderWithWriter(w),
+ }
+}
+
+// Encode writes the YAML encoding of v to the stream.
+// If multiple items are encoded to the stream, the
+// second and subsequent document will be preceded
+// with a "---" document separator, but the first will not.
+//
+// See the documentation for Marshal for details about the conversion of Go
+// values to YAML.
+func (e *Encoder) Encode(v interface{}) (err error) {
+ defer handleErr(&err)
+ e.encoder.marshalDoc("", reflect.ValueOf(v))
+ return nil
+}
+
+// Close closes the encoder by writing any remaining data.
+// It does not write a stream terminating string "...".
+func (e *Encoder) Close() (err error) {
+ defer handleErr(&err)
+ e.encoder.finish()
+ return nil
+}
+
+func handleErr(err *error) {
+ if v := recover(); v != nil {
+ if e, ok := v.(yamlError); ok {
+ *err = e.err
+ } else {
+ panic(v)
+ }
+ }
+}
+
+type yamlError struct {
+ err error
+}
+
+func fail(err error) {
+ panic(yamlError{err})
+}
+
+func failf(format string, args ...interface{}) {
+ panic(yamlError{fmt.Errorf("yaml: "+format, args...)})
+}
+
+// A TypeError is returned by Unmarshal when one or more fields in
+// the YAML document cannot be properly decoded into the requested
+// types. When this error is returned, the value is still
+// unmarshaled partially.
+type TypeError struct {
+ Errors []string
+}
+
+func (e *TypeError) Error() string {
+ return fmt.Sprintf("yaml: unmarshal errors:\n %s", strings.Join(e.Errors, "\n "))
+}
+
+// --------------------------------------------------------------------------
+// Maintain a mapping of keys to structure field indexes
+
+// The code in this section was copied from mgo/bson.
+
+// structInfo holds details for the serialization of fields of
+// a given struct.
+type structInfo struct {
+ FieldsMap map[string]fieldInfo
+ FieldsList []fieldInfo
+
+ // InlineMap is the number of the field in the struct that
+ // contains an ,inline map, or -1 if there's none.
+ InlineMap int
+}
+
+type fieldInfo struct {
+ Key string
+ Num int
+ OmitEmpty bool
+ Flow bool
+ // Id holds the unique field identifier, so we can cheaply
+ // check for field duplicates without maintaining an extra map.
+ Id int
+
+ // Inline holds the field index if the field is part of an inlined struct.
+ Inline []int
+}
+
+var structMap = make(map[reflect.Type]*structInfo)
+var fieldMapMutex sync.RWMutex
+
+func getStructInfo(st reflect.Type) (*structInfo, error) {
+ fieldMapMutex.RLock()
+ sinfo, found := structMap[st]
+ fieldMapMutex.RUnlock()
+ if found {
+ return sinfo, nil
+ }
+
+ n := st.NumField()
+ fieldsMap := make(map[string]fieldInfo)
+ fieldsList := make([]fieldInfo, 0, n)
+ inlineMap := -1
+ for i := 0; i != n; i++ {
+ field := st.Field(i)
+ if field.PkgPath != "" && !field.Anonymous {
+ continue // Private field
+ }
+
+ info := fieldInfo{Num: i}
+
+ tag := field.Tag.Get("yaml")
+ if tag == "" && strings.Index(string(field.Tag), ":") < 0 {
+ tag = string(field.Tag)
+ }
+ if tag == "-" {
+ continue
+ }
+
+ inline := false
+ fields := strings.Split(tag, ",")
+ if len(fields) > 1 {
+ for _, flag := range fields[1:] {
+ switch flag {
+ case "omitempty":
+ info.OmitEmpty = true
+ case "flow":
+ info.Flow = true
+ case "inline":
+ inline = true
+ default:
+ return nil, errors.New(fmt.Sprintf("Unsupported flag %q in tag %q of type %s", flag, tag, st))
+ }
+ }
+ tag = fields[0]
+ }
+
+ if inline {
+ switch field.Type.Kind() {
+ case reflect.Map:
+ if inlineMap >= 0 {
+ return nil, errors.New("Multiple ,inline maps in struct " + st.String())
+ }
+ if field.Type.Key() != reflect.TypeOf("") {
+ return nil, errors.New("Option ,inline needs a map with string keys in struct " + st.String())
+ }
+ inlineMap = info.Num
+ case reflect.Struct:
+ sinfo, err := getStructInfo(field.Type)
+ if err != nil {
+ return nil, err
+ }
+ for _, finfo := range sinfo.FieldsList {
+ if _, found := fieldsMap[finfo.Key]; found {
+ msg := "Duplicated key '" + finfo.Key + "' in struct " + st.String()
+ return nil, errors.New(msg)
+ }
+ if finfo.Inline == nil {
+ finfo.Inline = []int{i, finfo.Num}
+ } else {
+ finfo.Inline = append([]int{i}, finfo.Inline...)
+ }
+ finfo.Id = len(fieldsList)
+ fieldsMap[finfo.Key] = finfo
+ fieldsList = append(fieldsList, finfo)
+ }
+ default:
+ //return nil, errors.New("Option ,inline needs a struct value or map field")
+ return nil, errors.New("Option ,inline needs a struct value field")
+ }
+ continue
+ }
+
+ if tag != "" {
+ info.Key = tag
+ } else {
+ info.Key = strings.ToLower(field.Name)
+ }
+
+ if _, found = fieldsMap[info.Key]; found {
+ msg := "Duplicated key '" + info.Key + "' in struct " + st.String()
+ return nil, errors.New(msg)
+ }
+
+ info.Id = len(fieldsList)
+ fieldsList = append(fieldsList, info)
+ fieldsMap[info.Key] = info
+ }
+
+ sinfo = &structInfo{
+ FieldsMap: fieldsMap,
+ FieldsList: fieldsList,
+ InlineMap: inlineMap,
+ }
+
+ fieldMapMutex.Lock()
+ structMap[st] = sinfo
+ fieldMapMutex.Unlock()
+ return sinfo, nil
+}
+
+// IsZeroer is used to check whether an object is zero to
+// determine whether it should be omitted when marshaling
+// with the omitempty flag. One notable implementation
+// is time.Time.
+type IsZeroer interface {
+ IsZero() bool
+}
+
+func isZero(v reflect.Value) bool {
+ kind := v.Kind()
+ if z, ok := v.Interface().(IsZeroer); ok {
+ if (kind == reflect.Ptr || kind == reflect.Interface) && v.IsNil() {
+ return true
+ }
+ return z.IsZero()
+ }
+ switch kind {
+ case reflect.String:
+ return len(v.String()) == 0
+ case reflect.Interface, reflect.Ptr:
+ return v.IsNil()
+ case reflect.Slice:
+ return v.Len() == 0
+ case reflect.Map:
+ return v.Len() == 0
+ case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+ return v.Int() == 0
+ case reflect.Float32, reflect.Float64:
+ return v.Float() == 0
+ case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+ return v.Uint() == 0
+ case reflect.Bool:
+ return !v.Bool()
+ case reflect.Struct:
+ vt := v.Type()
+ for i := v.NumField() - 1; i >= 0; i-- {
+ if vt.Field(i).PkgPath != "" {
+ continue // Private field
+ }
+ if !isZero(v.Field(i)) {
+ return false
+ }
+ }
+ return true
+ }
+ return false
+}
diff --git a/vendor/gopkg.in/yaml.v2/yamlh.go b/vendor/gopkg.in/yaml.v2/yamlh.go
new file mode 100644
index 0000000..e25cee5
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/yamlh.go
@@ -0,0 +1,738 @@
+package yaml
+
+import (
+ "fmt"
+ "io"
+)
+
+// The version directive data.
+type yaml_version_directive_t struct {
+ major int8 // The major version number.
+ minor int8 // The minor version number.
+}
+
+// The tag directive data.
+type yaml_tag_directive_t struct {
+ handle []byte // The tag handle.
+ prefix []byte // The tag prefix.
+}
+
+type yaml_encoding_t int
+
+// The stream encoding.
+const (
+ // Let the parser choose the encoding.
+ yaml_ANY_ENCODING yaml_encoding_t = iota
+
+ yaml_UTF8_ENCODING // The default UTF-8 encoding.
+ yaml_UTF16LE_ENCODING // The UTF-16-LE encoding with BOM.
+ yaml_UTF16BE_ENCODING // The UTF-16-BE encoding with BOM.
+)
+
+type yaml_break_t int
+
+// Line break types.
+const (
+ // Let the parser choose the break type.
+ yaml_ANY_BREAK yaml_break_t = iota
+
+ yaml_CR_BREAK // Use CR for line breaks (Mac style).
+ yaml_LN_BREAK // Use LN for line breaks (Unix style).
+ yaml_CRLN_BREAK // Use CR LN for line breaks (DOS style).
+)
+
+type yaml_error_type_t int
+
+// Many bad things could happen with the parser and emitter.
+const (
+ // No error is produced.
+ yaml_NO_ERROR yaml_error_type_t = iota
+
+ yaml_MEMORY_ERROR // Cannot allocate or reallocate a block of memory.
+ yaml_READER_ERROR // Cannot read or decode the input stream.
+ yaml_SCANNER_ERROR // Cannot scan the input stream.
+ yaml_PARSER_ERROR // Cannot parse the input stream.
+ yaml_COMPOSER_ERROR // Cannot compose a YAML document.
+ yaml_WRITER_ERROR // Cannot write to the output stream.
+ yaml_EMITTER_ERROR // Cannot emit a YAML stream.
+)
+
+// The pointer position.
+type yaml_mark_t struct {
+ index int // The position index.
+ line int // The position line.
+ column int // The position column.
+}
+
+// Node Styles
+
+type yaml_style_t int8
+
+type yaml_scalar_style_t yaml_style_t
+
+// Scalar styles.
+const (
+ // Let the emitter choose the style.
+ yaml_ANY_SCALAR_STYLE yaml_scalar_style_t = iota
+
+ yaml_PLAIN_SCALAR_STYLE // The plain scalar style.
+ yaml_SINGLE_QUOTED_SCALAR_STYLE // The single-quoted scalar style.
+ yaml_DOUBLE_QUOTED_SCALAR_STYLE // The double-quoted scalar style.
+ yaml_LITERAL_SCALAR_STYLE // The literal scalar style.
+ yaml_FOLDED_SCALAR_STYLE // The folded scalar style.
+)
+
+type yaml_sequence_style_t yaml_style_t
+
+// Sequence styles.
+const (
+ // Let the emitter choose the style.
+ yaml_ANY_SEQUENCE_STYLE yaml_sequence_style_t = iota
+
+ yaml_BLOCK_SEQUENCE_STYLE // The block sequence style.
+ yaml_FLOW_SEQUENCE_STYLE // The flow sequence style.
+)
+
+type yaml_mapping_style_t yaml_style_t
+
+// Mapping styles.
+const (
+ // Let the emitter choose the style.
+ yaml_ANY_MAPPING_STYLE yaml_mapping_style_t = iota
+
+ yaml_BLOCK_MAPPING_STYLE // The block mapping style.
+ yaml_FLOW_MAPPING_STYLE // The flow mapping style.
+)
+
+// Tokens
+
+type yaml_token_type_t int
+
+// Token types.
+const (
+ // An empty token.
+ yaml_NO_TOKEN yaml_token_type_t = iota
+
+ yaml_STREAM_START_TOKEN // A STREAM-START token.
+ yaml_STREAM_END_TOKEN // A STREAM-END token.
+
+ yaml_VERSION_DIRECTIVE_TOKEN // A VERSION-DIRECTIVE token.
+ yaml_TAG_DIRECTIVE_TOKEN // A TAG-DIRECTIVE token.
+ yaml_DOCUMENT_START_TOKEN // A DOCUMENT-START token.
+ yaml_DOCUMENT_END_TOKEN // A DOCUMENT-END token.
+
+ yaml_BLOCK_SEQUENCE_START_TOKEN // A BLOCK-SEQUENCE-START token.
+ yaml_BLOCK_MAPPING_START_TOKEN // A BLOCK-SEQUENCE-END token.
+ yaml_BLOCK_END_TOKEN // A BLOCK-END token.
+
+ yaml_FLOW_SEQUENCE_START_TOKEN // A FLOW-SEQUENCE-START token.
+ yaml_FLOW_SEQUENCE_END_TOKEN // A FLOW-SEQUENCE-END token.
+ yaml_FLOW_MAPPING_START_TOKEN // A FLOW-MAPPING-START token.
+ yaml_FLOW_MAPPING_END_TOKEN // A FLOW-MAPPING-END token.
+
+ yaml_BLOCK_ENTRY_TOKEN // A BLOCK-ENTRY token.
+ yaml_FLOW_ENTRY_TOKEN // A FLOW-ENTRY token.
+ yaml_KEY_TOKEN // A KEY token.
+ yaml_VALUE_TOKEN // A VALUE token.
+
+ yaml_ALIAS_TOKEN // An ALIAS token.
+ yaml_ANCHOR_TOKEN // An ANCHOR token.
+ yaml_TAG_TOKEN // A TAG token.
+ yaml_SCALAR_TOKEN // A SCALAR token.
+)
+
+func (tt yaml_token_type_t) String() string {
+ switch tt {
+ case yaml_NO_TOKEN:
+ return "yaml_NO_TOKEN"
+ case yaml_STREAM_START_TOKEN:
+ return "yaml_STREAM_START_TOKEN"
+ case yaml_STREAM_END_TOKEN:
+ return "yaml_STREAM_END_TOKEN"
+ case yaml_VERSION_DIRECTIVE_TOKEN:
+ return "yaml_VERSION_DIRECTIVE_TOKEN"
+ case yaml_TAG_DIRECTIVE_TOKEN:
+ return "yaml_TAG_DIRECTIVE_TOKEN"
+ case yaml_DOCUMENT_START_TOKEN:
+ return "yaml_DOCUMENT_START_TOKEN"
+ case yaml_DOCUMENT_END_TOKEN:
+ return "yaml_DOCUMENT_END_TOKEN"
+ case yaml_BLOCK_SEQUENCE_START_TOKEN:
+ return "yaml_BLOCK_SEQUENCE_START_TOKEN"
+ case yaml_BLOCK_MAPPING_START_TOKEN:
+ return "yaml_BLOCK_MAPPING_START_TOKEN"
+ case yaml_BLOCK_END_TOKEN:
+ return "yaml_BLOCK_END_TOKEN"
+ case yaml_FLOW_SEQUENCE_START_TOKEN:
+ return "yaml_FLOW_SEQUENCE_START_TOKEN"
+ case yaml_FLOW_SEQUENCE_END_TOKEN:
+ return "yaml_FLOW_SEQUENCE_END_TOKEN"
+ case yaml_FLOW_MAPPING_START_TOKEN:
+ return "yaml_FLOW_MAPPING_START_TOKEN"
+ case yaml_FLOW_MAPPING_END_TOKEN:
+ return "yaml_FLOW_MAPPING_END_TOKEN"
+ case yaml_BLOCK_ENTRY_TOKEN:
+ return "yaml_BLOCK_ENTRY_TOKEN"
+ case yaml_FLOW_ENTRY_TOKEN:
+ return "yaml_FLOW_ENTRY_TOKEN"
+ case yaml_KEY_TOKEN:
+ return "yaml_KEY_TOKEN"
+ case yaml_VALUE_TOKEN:
+ return "yaml_VALUE_TOKEN"
+ case yaml_ALIAS_TOKEN:
+ return "yaml_ALIAS_TOKEN"
+ case yaml_ANCHOR_TOKEN:
+ return "yaml_ANCHOR_TOKEN"
+ case yaml_TAG_TOKEN:
+ return "yaml_TAG_TOKEN"
+ case yaml_SCALAR_TOKEN:
+ return "yaml_SCALAR_TOKEN"
+ }
+ return "<unknown token>"
+}
+
+// The token structure.
+type yaml_token_t struct {
+ // The token type.
+ typ yaml_token_type_t
+
+ // The start/end of the token.
+ start_mark, end_mark yaml_mark_t
+
+ // The stream encoding (for yaml_STREAM_START_TOKEN).
+ encoding yaml_encoding_t
+
+ // The alias/anchor/scalar value or tag/tag directive handle
+ // (for yaml_ALIAS_TOKEN, yaml_ANCHOR_TOKEN, yaml_SCALAR_TOKEN, yaml_TAG_TOKEN, yaml_TAG_DIRECTIVE_TOKEN).
+ value []byte
+
+ // The tag suffix (for yaml_TAG_TOKEN).
+ suffix []byte
+
+ // The tag directive prefix (for yaml_TAG_DIRECTIVE_TOKEN).
+ prefix []byte
+
+ // The scalar style (for yaml_SCALAR_TOKEN).
+ style yaml_scalar_style_t
+
+ // The version directive major/minor (for yaml_VERSION_DIRECTIVE_TOKEN).
+ major, minor int8
+}
+
+// Events
+
+type yaml_event_type_t int8
+
+// Event types.
+const (
+ // An empty event.
+ yaml_NO_EVENT yaml_event_type_t = iota
+
+ yaml_STREAM_START_EVENT // A STREAM-START event.
+ yaml_STREAM_END_EVENT // A STREAM-END event.
+ yaml_DOCUMENT_START_EVENT // A DOCUMENT-START event.
+ yaml_DOCUMENT_END_EVENT // A DOCUMENT-END event.
+ yaml_ALIAS_EVENT // An ALIAS event.
+ yaml_SCALAR_EVENT // A SCALAR event.
+ yaml_SEQUENCE_START_EVENT // A SEQUENCE-START event.
+ yaml_SEQUENCE_END_EVENT // A SEQUENCE-END event.
+ yaml_MAPPING_START_EVENT // A MAPPING-START event.
+ yaml_MAPPING_END_EVENT // A MAPPING-END event.
+)
+
+var eventStrings = []string{
+ yaml_NO_EVENT: "none",
+ yaml_STREAM_START_EVENT: "stream start",
+ yaml_STREAM_END_EVENT: "stream end",
+ yaml_DOCUMENT_START_EVENT: "document start",
+ yaml_DOCUMENT_END_EVENT: "document end",
+ yaml_ALIAS_EVENT: "alias",
+ yaml_SCALAR_EVENT: "scalar",
+ yaml_SEQUENCE_START_EVENT: "sequence start",
+ yaml_SEQUENCE_END_EVENT: "sequence end",
+ yaml_MAPPING_START_EVENT: "mapping start",
+ yaml_MAPPING_END_EVENT: "mapping end",
+}
+
+func (e yaml_event_type_t) String() string {
+ if e < 0 || int(e) >= len(eventStrings) {
+ return fmt.Sprintf("unknown event %d", e)
+ }
+ return eventStrings[e]
+}
+
+// The event structure.
+type yaml_event_t struct {
+
+ // The event type.
+ typ yaml_event_type_t
+
+ // The start and end of the event.
+ start_mark, end_mark yaml_mark_t
+
+ // The document encoding (for yaml_STREAM_START_EVENT).
+ encoding yaml_encoding_t
+
+ // The version directive (for yaml_DOCUMENT_START_EVENT).
+ version_directive *yaml_version_directive_t
+
+ // The list of tag directives (for yaml_DOCUMENT_START_EVENT).
+ tag_directives []yaml_tag_directive_t
+
+ // The anchor (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_ALIAS_EVENT).
+ anchor []byte
+
+ // The tag (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT).
+ tag []byte
+
+ // The scalar value (for yaml_SCALAR_EVENT).
+ value []byte
+
+ // Is the document start/end indicator implicit, or the tag optional?
+ // (for yaml_DOCUMENT_START_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_SCALAR_EVENT).
+ implicit bool
+
+ // Is the tag optional for any non-plain style? (for yaml_SCALAR_EVENT).
+ quoted_implicit bool
+
+ // The style (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT).
+ style yaml_style_t
+}
+
+func (e *yaml_event_t) scalar_style() yaml_scalar_style_t { return yaml_scalar_style_t(e.style) }
+func (e *yaml_event_t) sequence_style() yaml_sequence_style_t { return yaml_sequence_style_t(e.style) }
+func (e *yaml_event_t) mapping_style() yaml_mapping_style_t { return yaml_mapping_style_t(e.style) }
+
+// Nodes
+
+const (
+ yaml_NULL_TAG = "tag:yaml.org,2002:null" // The tag !!null with the only possible value: null.
+ yaml_BOOL_TAG = "tag:yaml.org,2002:bool" // The tag !!bool with the values: true and false.
+ yaml_STR_TAG = "tag:yaml.org,2002:str" // The tag !!str for string values.
+ yaml_INT_TAG = "tag:yaml.org,2002:int" // The tag !!int for integer values.
+ yaml_FLOAT_TAG = "tag:yaml.org,2002:float" // The tag !!float for float values.
+ yaml_TIMESTAMP_TAG = "tag:yaml.org,2002:timestamp" // The tag !!timestamp for date and time values.
+
+ yaml_SEQ_TAG = "tag:yaml.org,2002:seq" // The tag !!seq is used to denote sequences.
+ yaml_MAP_TAG = "tag:yaml.org,2002:map" // The tag !!map is used to denote mapping.
+
+ // Not in original libyaml.
+ yaml_BINARY_TAG = "tag:yaml.org,2002:binary"
+ yaml_MERGE_TAG = "tag:yaml.org,2002:merge"
+
+ yaml_DEFAULT_SCALAR_TAG = yaml_STR_TAG // The default scalar tag is !!str.
+ yaml_DEFAULT_SEQUENCE_TAG = yaml_SEQ_TAG // The default sequence tag is !!seq.
+ yaml_DEFAULT_MAPPING_TAG = yaml_MAP_TAG // The default mapping tag is !!map.
+)
+
+type yaml_node_type_t int
+
+// Node types.
+const (
+ // An empty node.
+ yaml_NO_NODE yaml_node_type_t = iota
+
+ yaml_SCALAR_NODE // A scalar node.
+ yaml_SEQUENCE_NODE // A sequence node.
+ yaml_MAPPING_NODE // A mapping node.
+)
+
+// An element of a sequence node.
+type yaml_node_item_t int
+
+// An element of a mapping node.
+type yaml_node_pair_t struct {
+ key int // The key of the element.
+ value int // The value of the element.
+}
+
+// The node structure.
+type yaml_node_t struct {
+ typ yaml_node_type_t // The node type.
+ tag []byte // The node tag.
+
+ // The node data.
+
+ // The scalar parameters (for yaml_SCALAR_NODE).
+ scalar struct {
+ value []byte // The scalar value.
+ length int // The length of the scalar value.
+ style yaml_scalar_style_t // The scalar style.
+ }
+
+ // The sequence parameters (for YAML_SEQUENCE_NODE).
+ sequence struct {
+ items_data []yaml_node_item_t // The stack of sequence items.
+ style yaml_sequence_style_t // The sequence style.
+ }
+
+ // The mapping parameters (for yaml_MAPPING_NODE).
+ mapping struct {
+ pairs_data []yaml_node_pair_t // The stack of mapping pairs (key, value).
+ pairs_start *yaml_node_pair_t // The beginning of the stack.
+ pairs_end *yaml_node_pair_t // The end of the stack.
+ pairs_top *yaml_node_pair_t // The top of the stack.
+ style yaml_mapping_style_t // The mapping style.
+ }
+
+ start_mark yaml_mark_t // The beginning of the node.
+ end_mark yaml_mark_t // The end of the node.
+
+}
+
+// The document structure.
+type yaml_document_t struct {
+
+ // The document nodes.
+ nodes []yaml_node_t
+
+ // The version directive.
+ version_directive *yaml_version_directive_t
+
+ // The list of tag directives.
+ tag_directives_data []yaml_tag_directive_t
+ tag_directives_start int // The beginning of the tag directives list.
+ tag_directives_end int // The end of the tag directives list.
+
+ start_implicit int // Is the document start indicator implicit?
+ end_implicit int // Is the document end indicator implicit?
+
+ // The start/end of the document.
+ start_mark, end_mark yaml_mark_t
+}
+
+// The prototype of a read handler.
+//
+// The read handler is called when the parser needs to read more bytes from the
+// source. The handler should write not more than size bytes to the buffer.
+// The number of written bytes should be set to the size_read variable.
+//
+// [in,out] data A pointer to an application data specified by
+// yaml_parser_set_input().
+// [out] buffer The buffer to write the data from the source.
+// [in] size The size of the buffer.
+// [out] size_read The actual number of bytes read from the source.
+//
+// On success, the handler should return 1. If the handler failed,
+// the returned value should be 0. On EOF, the handler should set the
+// size_read to 0 and return 1.
+type yaml_read_handler_t func(parser *yaml_parser_t, buffer []byte) (n int, err error)
+
+// This structure holds information about a potential simple key.
+type yaml_simple_key_t struct {
+ possible bool // Is a simple key possible?
+ required bool // Is a simple key required?
+ token_number int // The number of the token.
+ mark yaml_mark_t // The position mark.
+}
+
+// The states of the parser.
+type yaml_parser_state_t int
+
+const (
+ yaml_PARSE_STREAM_START_STATE yaml_parser_state_t = iota
+
+ yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE // Expect the beginning of an implicit document.
+ yaml_PARSE_DOCUMENT_START_STATE // Expect DOCUMENT-START.
+ yaml_PARSE_DOCUMENT_CONTENT_STATE // Expect the content of a document.
+ yaml_PARSE_DOCUMENT_END_STATE // Expect DOCUMENT-END.
+ yaml_PARSE_BLOCK_NODE_STATE // Expect a block node.
+ yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE // Expect a block node or indentless sequence.
+ yaml_PARSE_FLOW_NODE_STATE // Expect a flow node.
+ yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE // Expect the first entry of a block sequence.
+ yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE // Expect an entry of a block sequence.
+ yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE // Expect an entry of an indentless sequence.
+ yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE // Expect the first key of a block mapping.
+ yaml_PARSE_BLOCK_MAPPING_KEY_STATE // Expect a block mapping key.
+ yaml_PARSE_BLOCK_MAPPING_VALUE_STATE // Expect a block mapping value.
+ yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE // Expect the first entry of a flow sequence.
+ yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE // Expect an entry of a flow sequence.
+ yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE // Expect a key of an ordered mapping.
+ yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE // Expect a value of an ordered mapping.
+ yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE // Expect the and of an ordered mapping entry.
+ yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE // Expect the first key of a flow mapping.
+ yaml_PARSE_FLOW_MAPPING_KEY_STATE // Expect a key of a flow mapping.
+ yaml_PARSE_FLOW_MAPPING_VALUE_STATE // Expect a value of a flow mapping.
+ yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE // Expect an empty value of a flow mapping.
+ yaml_PARSE_END_STATE // Expect nothing.
+)
+
+func (ps yaml_parser_state_t) String() string {
+ switch ps {
+ case yaml_PARSE_STREAM_START_STATE:
+ return "yaml_PARSE_STREAM_START_STATE"
+ case yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE:
+ return "yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE"
+ case yaml_PARSE_DOCUMENT_START_STATE:
+ return "yaml_PARSE_DOCUMENT_START_STATE"
+ case yaml_PARSE_DOCUMENT_CONTENT_STATE:
+ return "yaml_PARSE_DOCUMENT_CONTENT_STATE"
+ case yaml_PARSE_DOCUMENT_END_STATE:
+ return "yaml_PARSE_DOCUMENT_END_STATE"
+ case yaml_PARSE_BLOCK_NODE_STATE:
+ return "yaml_PARSE_BLOCK_NODE_STATE"
+ case yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE:
+ return "yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE"
+ case yaml_PARSE_FLOW_NODE_STATE:
+ return "yaml_PARSE_FLOW_NODE_STATE"
+ case yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE:
+ return "yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE"
+ case yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE:
+ return "yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE"
+ case yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE:
+ return "yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE"
+ case yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE:
+ return "yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE"
+ case yaml_PARSE_BLOCK_MAPPING_KEY_STATE:
+ return "yaml_PARSE_BLOCK_MAPPING_KEY_STATE"
+ case yaml_PARSE_BLOCK_MAPPING_VALUE_STATE:
+ return "yaml_PARSE_BLOCK_MAPPING_VALUE_STATE"
+ case yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE:
+ return "yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE"
+ case yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE:
+ return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE"
+ case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE:
+ return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE"
+ case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE:
+ return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE"
+ case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE:
+ return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE"
+ case yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE:
+ return "yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE"
+ case yaml_PARSE_FLOW_MAPPING_KEY_STATE:
+ return "yaml_PARSE_FLOW_MAPPING_KEY_STATE"
+ case yaml_PARSE_FLOW_MAPPING_VALUE_STATE:
+ return "yaml_PARSE_FLOW_MAPPING_VALUE_STATE"
+ case yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE:
+ return "yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE"
+ case yaml_PARSE_END_STATE:
+ return "yaml_PARSE_END_STATE"
+ }
+ return "<unknown parser state>"
+}
+
+// This structure holds aliases data.
+type yaml_alias_data_t struct {
+ anchor []byte // The anchor.
+ index int // The node id.
+ mark yaml_mark_t // The anchor mark.
+}
+
+// The parser structure.
+//
+// All members are internal. Manage the structure using the
+// yaml_parser_ family of functions.
+type yaml_parser_t struct {
+
+ // Error handling
+
+ error yaml_error_type_t // Error type.
+
+ problem string // Error description.
+
+ // The byte about which the problem occurred.
+ problem_offset int
+ problem_value int
+ problem_mark yaml_mark_t
+
+ // The error context.
+ context string
+ context_mark yaml_mark_t
+
+ // Reader stuff
+
+ read_handler yaml_read_handler_t // Read handler.
+
+ input_reader io.Reader // File input data.
+ input []byte // String input data.
+ input_pos int
+
+ eof bool // EOF flag
+
+ buffer []byte // The working buffer.
+ buffer_pos int // The current position of the buffer.
+
+ unread int // The number of unread characters in the buffer.
+
+ raw_buffer []byte // The raw buffer.
+ raw_buffer_pos int // The current position of the buffer.
+
+ encoding yaml_encoding_t // The input encoding.
+
+ offset int // The offset of the current position (in bytes).
+ mark yaml_mark_t // The mark of the current position.
+
+ // Scanner stuff
+
+ stream_start_produced bool // Have we started to scan the input stream?
+ stream_end_produced bool // Have we reached the end of the input stream?
+
+ flow_level int // The number of unclosed '[' and '{' indicators.
+
+ tokens []yaml_token_t // The tokens queue.
+ tokens_head int // The head of the tokens queue.
+ tokens_parsed int // The number of tokens fetched from the queue.
+ token_available bool // Does the tokens queue contain a token ready for dequeueing.
+
+ indent int // The current indentation level.
+ indents []int // The indentation levels stack.
+
+ simple_key_allowed bool // May a simple key occur at the current position?
+ simple_keys []yaml_simple_key_t // The stack of simple keys.
+
+ // Parser stuff
+
+ state yaml_parser_state_t // The current parser state.
+ states []yaml_parser_state_t // The parser states stack.
+ marks []yaml_mark_t // The stack of marks.
+ tag_directives []yaml_tag_directive_t // The list of TAG directives.
+
+ // Dumper stuff
+
+ aliases []yaml_alias_data_t // The alias data.
+
+ document *yaml_document_t // The currently parsed document.
+}
+
+// Emitter Definitions
+
+// The prototype of a write handler.
+//
+// The write handler is called when the emitter needs to flush the accumulated
+// characters to the output. The handler should write @a size bytes of the
+// @a buffer to the output.
+//
+// @param[in,out] data A pointer to an application data specified by
+// yaml_emitter_set_output().
+// @param[in] buffer The buffer with bytes to be written.
+// @param[in] size The size of the buffer.
+//
+// @returns On success, the handler should return @c 1. If the handler failed,
+// the returned value should be @c 0.
+//
+type yaml_write_handler_t func(emitter *yaml_emitter_t, buffer []byte) error
+
+type yaml_emitter_state_t int
+
+// The emitter states.
+const (
+ // Expect STREAM-START.
+ yaml_EMIT_STREAM_START_STATE yaml_emitter_state_t = iota
+
+ yaml_EMIT_FIRST_DOCUMENT_START_STATE // Expect the first DOCUMENT-START or STREAM-END.
+ yaml_EMIT_DOCUMENT_START_STATE // Expect DOCUMENT-START or STREAM-END.
+ yaml_EMIT_DOCUMENT_CONTENT_STATE // Expect the content of a document.
+ yaml_EMIT_DOCUMENT_END_STATE // Expect DOCUMENT-END.
+ yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE // Expect the first item of a flow sequence.
+ yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE // Expect an item of a flow sequence.
+ yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE // Expect the first key of a flow mapping.
+ yaml_EMIT_FLOW_MAPPING_KEY_STATE // Expect a key of a flow mapping.
+ yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE // Expect a value for a simple key of a flow mapping.
+ yaml_EMIT_FLOW_MAPPING_VALUE_STATE // Expect a value of a flow mapping.
+ yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE // Expect the first item of a block sequence.
+ yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE // Expect an item of a block sequence.
+ yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE // Expect the first key of a block mapping.
+ yaml_EMIT_BLOCK_MAPPING_KEY_STATE // Expect the key of a block mapping.
+ yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE // Expect a value for a simple key of a block mapping.
+ yaml_EMIT_BLOCK_MAPPING_VALUE_STATE // Expect a value of a block mapping.
+ yaml_EMIT_END_STATE // Expect nothing.
+)
+
+// The emitter structure.
+//
+// All members are internal. Manage the structure using the @c yaml_emitter_
+// family of functions.
+type yaml_emitter_t struct {
+
+ // Error handling
+
+ error yaml_error_type_t // Error type.
+ problem string // Error description.
+
+ // Writer stuff
+
+ write_handler yaml_write_handler_t // Write handler.
+
+ output_buffer *[]byte // String output data.
+ output_writer io.Writer // File output data.
+
+ buffer []byte // The working buffer.
+ buffer_pos int // The current position of the buffer.
+
+ raw_buffer []byte // The raw buffer.
+ raw_buffer_pos int // The current position of the buffer.
+
+ encoding yaml_encoding_t // The stream encoding.
+
+ // Emitter stuff
+
+ canonical bool // If the output is in the canonical style?
+ best_indent int // The number of indentation spaces.
+ best_width int // The preferred width of the output lines.
+ unicode bool // Allow unescaped non-ASCII characters?
+ line_break yaml_break_t // The preferred line break.
+
+ state yaml_emitter_state_t // The current emitter state.
+ states []yaml_emitter_state_t // The stack of states.
+
+ events []yaml_event_t // The event queue.
+ events_head int // The head of the event queue.
+
+ indents []int // The stack of indentation levels.
+
+ tag_directives []yaml_tag_directive_t // The list of tag directives.
+
+ indent int // The current indentation level.
+
+ flow_level int // The current flow level.
+
+ root_context bool // Is it the document root context?
+ sequence_context bool // Is it a sequence context?
+ mapping_context bool // Is it a mapping context?
+ simple_key_context bool // Is it a simple mapping key context?
+
+ line int // The current line.
+ column int // The current column.
+ whitespace bool // If the last character was a whitespace?
+ indention bool // If the last character was an indentation character (' ', '-', '?', ':')?
+ open_ended bool // If an explicit document end is required?
+
+ // Anchor analysis.
+ anchor_data struct {
+ anchor []byte // The anchor value.
+ alias bool // Is it an alias?
+ }
+
+ // Tag analysis.
+ tag_data struct {
+ handle []byte // The tag handle.
+ suffix []byte // The tag suffix.
+ }
+
+ // Scalar analysis.
+ scalar_data struct {
+ value []byte // The scalar value.
+ multiline bool // Does the scalar contain line breaks?
+ flow_plain_allowed bool // Can the scalar be expessed in the flow plain style?
+ block_plain_allowed bool // Can the scalar be expressed in the block plain style?
+ single_quoted_allowed bool // Can the scalar be expressed in the single quoted style?
+ block_allowed bool // Can the scalar be expressed in the literal or folded styles?
+ style yaml_scalar_style_t // The output style.
+ }
+
+ // Dumper stuff
+
+ opened bool // If the stream was already opened?
+ closed bool // If the stream was already closed?
+
+ // The information associated with the document nodes.
+ anchors *struct {
+ references int // The number of references.
+ anchor int // The anchor id.
+ serialized bool // If the node has been emitted?
+ }
+
+ last_anchor_id int // The last assigned anchor id.
+
+ document *yaml_document_t // The currently emitted document.
+}
diff --git a/vendor/gopkg.in/yaml.v2/yamlprivateh.go b/vendor/gopkg.in/yaml.v2/yamlprivateh.go
new file mode 100644
index 0000000..8110ce3
--- /dev/null
+++ b/vendor/gopkg.in/yaml.v2/yamlprivateh.go
@@ -0,0 +1,173 @@
+package yaml
+
+const (
+ // The size of the input raw buffer.
+ input_raw_buffer_size = 512
+
+ // The size of the input buffer.
+ // It should be possible to decode the whole raw buffer.
+ input_buffer_size = input_raw_buffer_size * 3
+
+ // The size of the output buffer.
+ output_buffer_size = 128
+
+ // The size of the output raw buffer.
+ // It should be possible to encode the whole output buffer.
+ output_raw_buffer_size = (output_buffer_size*2 + 2)
+
+ // The size of other stacks and queues.
+ initial_stack_size = 16
+ initial_queue_size = 16
+ initial_string_size = 16
+)
+
+// Check if the character at the specified position is an alphabetical
+// character, a digit, '_', or '-'.
+func is_alpha(b []byte, i int) bool {
+ return b[i] >= '0' && b[i] <= '9' || b[i] >= 'A' && b[i] <= 'Z' || b[i] >= 'a' && b[i] <= 'z' || b[i] == '_' || b[i] == '-'
+}
+
+// Check if the character at the specified position is a digit.
+func is_digit(b []byte, i int) bool {
+ return b[i] >= '0' && b[i] <= '9'
+}
+
+// Get the value of a digit.
+func as_digit(b []byte, i int) int {
+ return int(b[i]) - '0'
+}
+
+// Check if the character at the specified position is a hex-digit.
+func is_hex(b []byte, i int) bool {
+ return b[i] >= '0' && b[i] <= '9' || b[i] >= 'A' && b[i] <= 'F' || b[i] >= 'a' && b[i] <= 'f'
+}
+
+// Get the value of a hex-digit.
+func as_hex(b []byte, i int) int {
+ bi := b[i]
+ if bi >= 'A' && bi <= 'F' {
+ return int(bi) - 'A' + 10
+ }
+ if bi >= 'a' && bi <= 'f' {
+ return int(bi) - 'a' + 10
+ }
+ return int(bi) - '0'
+}
+
+// Check if the character is ASCII.
+func is_ascii(b []byte, i int) bool {
+ return b[i] <= 0x7F
+}
+
+// Check if the character at the start of the buffer can be printed unescaped.
+func is_printable(b []byte, i int) bool {
+ return ((b[i] == 0x0A) || // . == #x0A
+ (b[i] >= 0x20 && b[i] <= 0x7E) || // #x20 <= . <= #x7E
+ (b[i] == 0xC2 && b[i+1] >= 0xA0) || // #0xA0 <= . <= #xD7FF
+ (b[i] > 0xC2 && b[i] < 0xED) ||
+ (b[i] == 0xED && b[i+1] < 0xA0) ||
+ (b[i] == 0xEE) ||
+ (b[i] == 0xEF && // #xE000 <= . <= #xFFFD
+ !(b[i+1] == 0xBB && b[i+2] == 0xBF) && // && . != #xFEFF
+ !(b[i+1] == 0xBF && (b[i+2] == 0xBE || b[i+2] == 0xBF))))
+}
+
+// Check if the character at the specified position is NUL.
+func is_z(b []byte, i int) bool {
+ return b[i] == 0x00
+}
+
+// Check if the beginning of the buffer is a BOM.
+func is_bom(b []byte, i int) bool {
+ return b[0] == 0xEF && b[1] == 0xBB && b[2] == 0xBF
+}
+
+// Check if the character at the specified position is space.
+func is_space(b []byte, i int) bool {
+ return b[i] == ' '
+}
+
+// Check if the character at the specified position is tab.
+func is_tab(b []byte, i int) bool {
+ return b[i] == '\t'
+}
+
+// Check if the character at the specified position is blank (space or tab).
+func is_blank(b []byte, i int) bool {
+ //return is_space(b, i) || is_tab(b, i)
+ return b[i] == ' ' || b[i] == '\t'
+}
+
+// Check if the character at the specified position is a line break.
+func is_break(b []byte, i int) bool {
+ return (b[i] == '\r' || // CR (#xD)
+ b[i] == '\n' || // LF (#xA)
+ b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+ b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+ b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9) // PS (#x2029)
+}
+
+func is_crlf(b []byte, i int) bool {
+ return b[i] == '\r' && b[i+1] == '\n'
+}
+
+// Check if the character is a line break or NUL.
+func is_breakz(b []byte, i int) bool {
+ //return is_break(b, i) || is_z(b, i)
+ return ( // is_break:
+ b[i] == '\r' || // CR (#xD)
+ b[i] == '\n' || // LF (#xA)
+ b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+ b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+ b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029)
+ // is_z:
+ b[i] == 0)
+}
+
+// Check if the character is a line break, space, or NUL.
+func is_spacez(b []byte, i int) bool {
+ //return is_space(b, i) || is_breakz(b, i)
+ return ( // is_space:
+ b[i] == ' ' ||
+ // is_breakz:
+ b[i] == '\r' || // CR (#xD)
+ b[i] == '\n' || // LF (#xA)
+ b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+ b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+ b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029)
+ b[i] == 0)
+}
+
+// Check if the character is a line break, space, tab, or NUL.
+func is_blankz(b []byte, i int) bool {
+ //return is_blank(b, i) || is_breakz(b, i)
+ return ( // is_blank:
+ b[i] == ' ' || b[i] == '\t' ||
+ // is_breakz:
+ b[i] == '\r' || // CR (#xD)
+ b[i] == '\n' || // LF (#xA)
+ b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+ b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+ b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029)
+ b[i] == 0)
+}
+
+// Determine the width of the character.
+func width(b byte) int {
+ // Don't replace these by a switch without first
+ // confirming that it is being inlined.
+ if b&0x80 == 0x00 {
+ return 1
+ }
+ if b&0xE0 == 0xC0 {
+ return 2
+ }
+ if b&0xF0 == 0xE0 {
+ return 3
+ }
+ if b&0xF8 == 0xF0 {
+ return 4
+ }
+ return 0
+
+}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 5a831df..6aa4a79 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -4,6 +4,8 @@
github.com/coreos/go-systemd/journal
# github.com/coreos/pkg v0.0.0-20180108230652-97fdf19511ea
github.com/coreos/pkg/capnslog
+# github.com/davecgh/go-spew v1.1.1
+github.com/davecgh/go-spew/spew
# github.com/donNewtonAlpha/goloxi v1.0.0
github.com/donNewtonAlpha/goloxi
github.com/donNewtonAlpha/goloxi/of13
@@ -49,6 +51,10 @@
github.com/opencord/voltha-protos/v3/go/omci
github.com/opencord/voltha-protos/v3/go/openflow_13
github.com/opencord/voltha-protos/v3/go/voltha
+# github.com/pmezard/go-difflib v1.0.0
+github.com/pmezard/go-difflib/difflib
+# github.com/stretchr/testify v1.4.0
+github.com/stretchr/testify/assert
# go.etcd.io/etcd v0.0.0-20190930204107-236ac2a90522
go.etcd.io/etcd/auth/authpb
go.etcd.io/etcd/clientv3
@@ -136,3 +142,5 @@
google.golang.org/grpc/stats
google.golang.org/grpc/status
google.golang.org/grpc/tap
+# gopkg.in/yaml.v2 v2.2.3
+gopkg.in/yaml.v2