| package json |
| |
| import ( |
| "encoding/json" |
| "fmt" |
| "math" |
| "net" |
| "strconv" |
| ) |
| |
| // AppendNil inserts a 'Nil' object into the dst byte array. |
| func (Encoder) AppendNil(dst []byte) []byte { |
| return append(dst, "null"...) |
| } |
| |
| // AppendBeginMarker inserts a map start into the dst byte array. |
| func (Encoder) AppendBeginMarker(dst []byte) []byte { |
| return append(dst, '{') |
| } |
| |
| // AppendEndMarker inserts a map end into the dst byte array. |
| func (Encoder) AppendEndMarker(dst []byte) []byte { |
| return append(dst, '}') |
| } |
| |
| // AppendLineBreak appends a line break. |
| func (Encoder) AppendLineBreak(dst []byte) []byte { |
| return append(dst, '\n') |
| } |
| |
| // AppendArrayStart adds markers to indicate the start of an array. |
| func (Encoder) AppendArrayStart(dst []byte) []byte { |
| return append(dst, '[') |
| } |
| |
| // AppendArrayEnd adds markers to indicate the end of an array. |
| func (Encoder) AppendArrayEnd(dst []byte) []byte { |
| return append(dst, ']') |
| } |
| |
| // AppendArrayDelim adds markers to indicate end of a particular array element. |
| func (Encoder) AppendArrayDelim(dst []byte) []byte { |
| if len(dst) > 0 { |
| return append(dst, ',') |
| } |
| return dst |
| } |
| |
| // AppendBool converts the input bool to a string and |
| // appends the encoded string to the input byte slice. |
| func (Encoder) AppendBool(dst []byte, val bool) []byte { |
| return strconv.AppendBool(dst, val) |
| } |
| |
| // AppendBools encodes the input bools to json and |
| // appends the encoded string list to the input byte slice. |
| func (Encoder) AppendBools(dst []byte, vals []bool) []byte { |
| if len(vals) == 0 { |
| return append(dst, '[', ']') |
| } |
| dst = append(dst, '[') |
| dst = strconv.AppendBool(dst, vals[0]) |
| if len(vals) > 1 { |
| for _, val := range vals[1:] { |
| dst = strconv.AppendBool(append(dst, ','), val) |
| } |
| } |
| dst = append(dst, ']') |
| return dst |
| } |
| |
| // AppendInt converts the input int to a string and |
| // appends the encoded string to the input byte slice. |
| func (Encoder) AppendInt(dst []byte, val int) []byte { |
| return strconv.AppendInt(dst, int64(val), 10) |
| } |
| |
| // AppendInts encodes the input ints to json and |
| // appends the encoded string list to the input byte slice. |
| func (Encoder) AppendInts(dst []byte, vals []int) []byte { |
| if len(vals) == 0 { |
| return append(dst, '[', ']') |
| } |
| dst = append(dst, '[') |
| dst = strconv.AppendInt(dst, int64(vals[0]), 10) |
| if len(vals) > 1 { |
| for _, val := range vals[1:] { |
| dst = strconv.AppendInt(append(dst, ','), int64(val), 10) |
| } |
| } |
| dst = append(dst, ']') |
| return dst |
| } |
| |
| // AppendInt8 converts the input []int8 to a string and |
| // appends the encoded string to the input byte slice. |
| func (Encoder) AppendInt8(dst []byte, val int8) []byte { |
| return strconv.AppendInt(dst, int64(val), 10) |
| } |
| |
| // AppendInts8 encodes the input int8s to json and |
| // appends the encoded string list to the input byte slice. |
| func (Encoder) AppendInts8(dst []byte, vals []int8) []byte { |
| if len(vals) == 0 { |
| return append(dst, '[', ']') |
| } |
| dst = append(dst, '[') |
| dst = strconv.AppendInt(dst, int64(vals[0]), 10) |
| if len(vals) > 1 { |
| for _, val := range vals[1:] { |
| dst = strconv.AppendInt(append(dst, ','), int64(val), 10) |
| } |
| } |
| dst = append(dst, ']') |
| return dst |
| } |
| |
| // AppendInt16 converts the input int16 to a string and |
| // appends the encoded string to the input byte slice. |
| func (Encoder) AppendInt16(dst []byte, val int16) []byte { |
| return strconv.AppendInt(dst, int64(val), 10) |
| } |
| |
| // AppendInts16 encodes the input int16s to json and |
| // appends the encoded string list to the input byte slice. |
| func (Encoder) AppendInts16(dst []byte, vals []int16) []byte { |
| if len(vals) == 0 { |
| return append(dst, '[', ']') |
| } |
| dst = append(dst, '[') |
| dst = strconv.AppendInt(dst, int64(vals[0]), 10) |
| if len(vals) > 1 { |
| for _, val := range vals[1:] { |
| dst = strconv.AppendInt(append(dst, ','), int64(val), 10) |
| } |
| } |
| dst = append(dst, ']') |
| return dst |
| } |
| |
| // AppendInt32 converts the input int32 to a string and |
| // appends the encoded string to the input byte slice. |
| func (Encoder) AppendInt32(dst []byte, val int32) []byte { |
| return strconv.AppendInt(dst, int64(val), 10) |
| } |
| |
| // AppendInts32 encodes the input int32s to json and |
| // appends the encoded string list to the input byte slice. |
| func (Encoder) AppendInts32(dst []byte, vals []int32) []byte { |
| if len(vals) == 0 { |
| return append(dst, '[', ']') |
| } |
| dst = append(dst, '[') |
| dst = strconv.AppendInt(dst, int64(vals[0]), 10) |
| if len(vals) > 1 { |
| for _, val := range vals[1:] { |
| dst = strconv.AppendInt(append(dst, ','), int64(val), 10) |
| } |
| } |
| dst = append(dst, ']') |
| return dst |
| } |
| |
| // AppendInt64 converts the input int64 to a string and |
| // appends the encoded string to the input byte slice. |
| func (Encoder) AppendInt64(dst []byte, val int64) []byte { |
| return strconv.AppendInt(dst, val, 10) |
| } |
| |
| // AppendInts64 encodes the input int64s to json and |
| // appends the encoded string list to the input byte slice. |
| func (Encoder) AppendInts64(dst []byte, vals []int64) []byte { |
| if len(vals) == 0 { |
| return append(dst, '[', ']') |
| } |
| dst = append(dst, '[') |
| dst = strconv.AppendInt(dst, vals[0], 10) |
| if len(vals) > 1 { |
| for _, val := range vals[1:] { |
| dst = strconv.AppendInt(append(dst, ','), val, 10) |
| } |
| } |
| dst = append(dst, ']') |
| return dst |
| } |
| |
| // AppendUint converts the input uint to a string and |
| // appends the encoded string to the input byte slice. |
| func (Encoder) AppendUint(dst []byte, val uint) []byte { |
| return strconv.AppendUint(dst, uint64(val), 10) |
| } |
| |
| // AppendUints encodes the input uints to json and |
| // appends the encoded string list to the input byte slice. |
| func (Encoder) AppendUints(dst []byte, vals []uint) []byte { |
| if len(vals) == 0 { |
| return append(dst, '[', ']') |
| } |
| dst = append(dst, '[') |
| dst = strconv.AppendUint(dst, uint64(vals[0]), 10) |
| if len(vals) > 1 { |
| for _, val := range vals[1:] { |
| dst = strconv.AppendUint(append(dst, ','), uint64(val), 10) |
| } |
| } |
| dst = append(dst, ']') |
| return dst |
| } |
| |
| // AppendUint8 converts the input uint8 to a string and |
| // appends the encoded string to the input byte slice. |
| func (Encoder) AppendUint8(dst []byte, val uint8) []byte { |
| return strconv.AppendUint(dst, uint64(val), 10) |
| } |
| |
| // AppendUints8 encodes the input uint8s to json and |
| // appends the encoded string list to the input byte slice. |
| func (Encoder) AppendUints8(dst []byte, vals []uint8) []byte { |
| if len(vals) == 0 { |
| return append(dst, '[', ']') |
| } |
| dst = append(dst, '[') |
| dst = strconv.AppendUint(dst, uint64(vals[0]), 10) |
| if len(vals) > 1 { |
| for _, val := range vals[1:] { |
| dst = strconv.AppendUint(append(dst, ','), uint64(val), 10) |
| } |
| } |
| dst = append(dst, ']') |
| return dst |
| } |
| |
| // AppendUint16 converts the input uint16 to a string and |
| // appends the encoded string to the input byte slice. |
| func (Encoder) AppendUint16(dst []byte, val uint16) []byte { |
| return strconv.AppendUint(dst, uint64(val), 10) |
| } |
| |
| // AppendUints16 encodes the input uint16s to json and |
| // appends the encoded string list to the input byte slice. |
| func (Encoder) AppendUints16(dst []byte, vals []uint16) []byte { |
| if len(vals) == 0 { |
| return append(dst, '[', ']') |
| } |
| dst = append(dst, '[') |
| dst = strconv.AppendUint(dst, uint64(vals[0]), 10) |
| if len(vals) > 1 { |
| for _, val := range vals[1:] { |
| dst = strconv.AppendUint(append(dst, ','), uint64(val), 10) |
| } |
| } |
| dst = append(dst, ']') |
| return dst |
| } |
| |
| // AppendUint32 converts the input uint32 to a string and |
| // appends the encoded string to the input byte slice. |
| func (Encoder) AppendUint32(dst []byte, val uint32) []byte { |
| return strconv.AppendUint(dst, uint64(val), 10) |
| } |
| |
| // AppendUints32 encodes the input uint32s to json and |
| // appends the encoded string list to the input byte slice. |
| func (Encoder) AppendUints32(dst []byte, vals []uint32) []byte { |
| if len(vals) == 0 { |
| return append(dst, '[', ']') |
| } |
| dst = append(dst, '[') |
| dst = strconv.AppendUint(dst, uint64(vals[0]), 10) |
| if len(vals) > 1 { |
| for _, val := range vals[1:] { |
| dst = strconv.AppendUint(append(dst, ','), uint64(val), 10) |
| } |
| } |
| dst = append(dst, ']') |
| return dst |
| } |
| |
| // AppendUint64 converts the input uint64 to a string and |
| // appends the encoded string to the input byte slice. |
| func (Encoder) AppendUint64(dst []byte, val uint64) []byte { |
| return strconv.AppendUint(dst, uint64(val), 10) |
| } |
| |
| // AppendUints64 encodes the input uint64s to json and |
| // appends the encoded string list to the input byte slice. |
| func (Encoder) AppendUints64(dst []byte, vals []uint64) []byte { |
| if len(vals) == 0 { |
| return append(dst, '[', ']') |
| } |
| dst = append(dst, '[') |
| dst = strconv.AppendUint(dst, vals[0], 10) |
| if len(vals) > 1 { |
| for _, val := range vals[1:] { |
| dst = strconv.AppendUint(append(dst, ','), val, 10) |
| } |
| } |
| dst = append(dst, ']') |
| return dst |
| } |
| |
| func appendFloat(dst []byte, val float64, bitSize int) []byte { |
| // JSON does not permit NaN or Infinity. A typical JSON encoder would fail |
| // with an error, but a logging library wants the data to get thru so we |
| // make a tradeoff and store those types as string. |
| switch { |
| case math.IsNaN(val): |
| return append(dst, `"NaN"`...) |
| case math.IsInf(val, 1): |
| return append(dst, `"+Inf"`...) |
| case math.IsInf(val, -1): |
| return append(dst, `"-Inf"`...) |
| } |
| return strconv.AppendFloat(dst, val, 'f', -1, bitSize) |
| } |
| |
| // AppendFloat32 converts the input float32 to a string and |
| // appends the encoded string to the input byte slice. |
| func (Encoder) AppendFloat32(dst []byte, val float32) []byte { |
| return appendFloat(dst, float64(val), 32) |
| } |
| |
| // AppendFloats32 encodes the input float32s to json and |
| // appends the encoded string list to the input byte slice. |
| func (Encoder) AppendFloats32(dst []byte, vals []float32) []byte { |
| if len(vals) == 0 { |
| return append(dst, '[', ']') |
| } |
| dst = append(dst, '[') |
| dst = appendFloat(dst, float64(vals[0]), 32) |
| if len(vals) > 1 { |
| for _, val := range vals[1:] { |
| dst = appendFloat(append(dst, ','), float64(val), 32) |
| } |
| } |
| dst = append(dst, ']') |
| return dst |
| } |
| |
| // AppendFloat64 converts the input float64 to a string and |
| // appends the encoded string to the input byte slice. |
| func (Encoder) AppendFloat64(dst []byte, val float64) []byte { |
| return appendFloat(dst, val, 64) |
| } |
| |
| // AppendFloats64 encodes the input float64s to json and |
| // appends the encoded string list to the input byte slice. |
| func (Encoder) AppendFloats64(dst []byte, vals []float64) []byte { |
| if len(vals) == 0 { |
| return append(dst, '[', ']') |
| } |
| dst = append(dst, '[') |
| dst = appendFloat(dst, vals[0], 32) |
| if len(vals) > 1 { |
| for _, val := range vals[1:] { |
| dst = appendFloat(append(dst, ','), val, 64) |
| } |
| } |
| dst = append(dst, ']') |
| return dst |
| } |
| |
| // AppendInterface marshals the input interface to a string and |
| // appends the encoded string to the input byte slice. |
| func (e Encoder) AppendInterface(dst []byte, i interface{}) []byte { |
| marshaled, err := json.Marshal(i) |
| if err != nil { |
| return e.AppendString(dst, fmt.Sprintf("marshaling error: %v", err)) |
| } |
| return append(dst, marshaled...) |
| } |
| |
| // AppendObjectData takes in an object that is already in a byte array |
| // and adds it to the dst. |
| func (Encoder) AppendObjectData(dst []byte, o []byte) []byte { |
| // Two conditions we want to put a ',' between existing content and |
| // new content: |
| // 1. new content starts with '{' - which shd be dropped OR |
| // 2. existing content has already other fields |
| if o[0] == '{' { |
| o[0] = ',' |
| } else if len(dst) > 1 { |
| dst = append(dst, ',') |
| } |
| return append(dst, o...) |
| } |
| |
| // AppendIPAddr adds IPv4 or IPv6 address to dst. |
| func (e Encoder) AppendIPAddr(dst []byte, ip net.IP) []byte { |
| return e.AppendString(dst, ip.String()) |
| } |
| |
| // AppendIPPrefix adds IPv4 or IPv6 Prefix (address & mask) to dst. |
| func (e Encoder) AppendIPPrefix(dst []byte, pfx net.IPNet) []byte { |
| return e.AppendString(dst, pfx.String()) |
| |
| } |
| |
| // AppendMACAddr adds MAC address to dst. |
| func (e Encoder) AppendMACAddr(dst []byte, ha net.HardwareAddr) []byte { |
| return e.AppendString(dst, ha.String()) |
| } |