Import of https://github.com/ciena/voltctl at commit 40d61fbf3f910ed4017cf67c9c79e8e1f82a33a5
Change-Id: I8464c59e60d76cb8612891db3303878975b5416c
diff --git a/vendor/k8s.io/apimachinery/pkg/util/net/port_range.go b/vendor/k8s.io/apimachinery/pkg/util/net/port_range.go
new file mode 100644
index 0000000..7b6eca8
--- /dev/null
+++ b/vendor/k8s.io/apimachinery/pkg/util/net/port_range.go
@@ -0,0 +1,149 @@
+/*
+Copyright 2015 The Kubernetes 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 net
+
+import (
+ "fmt"
+ "strconv"
+ "strings"
+)
+
+// PortRange represents a range of TCP/UDP ports. To represent a single port,
+// set Size to 1.
+type PortRange struct {
+ Base int
+ Size int
+}
+
+// Contains tests whether a given port falls within the PortRange.
+func (pr *PortRange) Contains(p int) bool {
+ return (p >= pr.Base) && ((p - pr.Base) < pr.Size)
+}
+
+// String converts the PortRange to a string representation, which can be
+// parsed by PortRange.Set or ParsePortRange.
+func (pr PortRange) String() string {
+ if pr.Size == 0 {
+ return ""
+ }
+ return fmt.Sprintf("%d-%d", pr.Base, pr.Base+pr.Size-1)
+}
+
+// Set parses a string of the form "value", "min-max", or "min+offset", inclusive at both ends, and
+// sets the PortRange from it. This is part of the flag.Value and pflag.Value
+// interfaces.
+func (pr *PortRange) Set(value string) error {
+ const (
+ SinglePortNotation = 1 << iota
+ HyphenNotation
+ PlusNotation
+ )
+
+ value = strings.TrimSpace(value)
+ hyphenIndex := strings.Index(value, "-")
+ plusIndex := strings.Index(value, "+")
+
+ if value == "" {
+ pr.Base = 0
+ pr.Size = 0
+ return nil
+ }
+
+ var err error
+ var low, high int
+ var notation int
+
+ if plusIndex == -1 && hyphenIndex == -1 {
+ notation |= SinglePortNotation
+ }
+ if hyphenIndex != -1 {
+ notation |= HyphenNotation
+ }
+ if plusIndex != -1 {
+ notation |= PlusNotation
+ }
+
+ switch notation {
+ case SinglePortNotation:
+ var port int
+ port, err = strconv.Atoi(value)
+ if err != nil {
+ return err
+ }
+ low = port
+ high = port
+ case HyphenNotation:
+ low, err = strconv.Atoi(value[:hyphenIndex])
+ if err != nil {
+ return err
+ }
+ high, err = strconv.Atoi(value[hyphenIndex+1:])
+ if err != nil {
+ return err
+ }
+ case PlusNotation:
+ var offset int
+ low, err = strconv.Atoi(value[:plusIndex])
+ if err != nil {
+ return err
+ }
+ offset, err = strconv.Atoi(value[plusIndex+1:])
+ if err != nil {
+ return err
+ }
+ high = low + offset
+ default:
+ return fmt.Errorf("unable to parse port range: %s", value)
+ }
+
+ if low > 65535 || high > 65535 {
+ return fmt.Errorf("the port range cannot be greater than 65535: %s", value)
+ }
+
+ if high < low {
+ return fmt.Errorf("end port cannot be less than start port: %s", value)
+ }
+
+ pr.Base = low
+ pr.Size = 1 + high - low
+ return nil
+}
+
+// Type returns a descriptive string about this type. This is part of the
+// pflag.Value interface.
+func (*PortRange) Type() string {
+ return "portRange"
+}
+
+// ParsePortRange parses a string of the form "min-max", inclusive at both
+// ends, and initializs a new PortRange from it.
+func ParsePortRange(value string) (*PortRange, error) {
+ pr := &PortRange{}
+ err := pr.Set(value)
+ if err != nil {
+ return nil, err
+ }
+ return pr, nil
+}
+
+func ParsePortRangeOrDie(value string) *PortRange {
+ pr, err := ParsePortRange(value)
+ if err != nil {
+ panic(fmt.Sprintf("couldn't parse port range %q: %v", value, err))
+ }
+ return pr
+}