415 lines
12 KiB
Go
415 lines
12 KiB
Go
package json
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import (
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"fmt"
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"math"
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"net"
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"reflect"
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"strconv"
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)
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// AppendNil inserts a 'Nil' object into the dst byte array.
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func (Encoder) AppendNil(dst []byte) []byte {
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return append(dst, "null"...)
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}
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// AppendBeginMarker inserts a map start into the dst byte array.
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func (Encoder) AppendBeginMarker(dst []byte) []byte {
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return append(dst, '{')
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}
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// AppendEndMarker inserts a map end into the dst byte array.
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func (Encoder) AppendEndMarker(dst []byte) []byte {
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return append(dst, '}')
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}
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// AppendLineBreak appends a line break.
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func (Encoder) AppendLineBreak(dst []byte) []byte {
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return append(dst, '\n')
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}
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// AppendArrayStart adds markers to indicate the start of an array.
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func (Encoder) AppendArrayStart(dst []byte) []byte {
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return append(dst, '[')
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}
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// AppendArrayEnd adds markers to indicate the end of an array.
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func (Encoder) AppendArrayEnd(dst []byte) []byte {
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return append(dst, ']')
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}
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// AppendArrayDelim adds markers to indicate end of a particular array element.
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func (Encoder) AppendArrayDelim(dst []byte) []byte {
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if len(dst) > 0 {
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return append(dst, ',')
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}
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return dst
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}
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// AppendBool converts the input bool to a string and
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// appends the encoded string to the input byte slice.
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func (Encoder) AppendBool(dst []byte, val bool) []byte {
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return strconv.AppendBool(dst, val)
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}
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// AppendBools encodes the input bools to json and
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// appends the encoded string list to the input byte slice.
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func (Encoder) AppendBools(dst []byte, vals []bool) []byte {
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if len(vals) == 0 {
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return append(dst, '[', ']')
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}
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dst = append(dst, '[')
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dst = strconv.AppendBool(dst, vals[0])
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if len(vals) > 1 {
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for _, val := range vals[1:] {
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dst = strconv.AppendBool(append(dst, ','), val)
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}
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}
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dst = append(dst, ']')
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return dst
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}
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// AppendInt converts the input int to a string and
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// appends the encoded string to the input byte slice.
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func (Encoder) AppendInt(dst []byte, val int) []byte {
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return strconv.AppendInt(dst, int64(val), 10)
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}
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// AppendInts encodes the input ints to json and
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// appends the encoded string list to the input byte slice.
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func (Encoder) AppendInts(dst []byte, vals []int) []byte {
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if len(vals) == 0 {
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return append(dst, '[', ']')
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}
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dst = append(dst, '[')
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dst = strconv.AppendInt(dst, int64(vals[0]), 10)
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if len(vals) > 1 {
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for _, val := range vals[1:] {
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dst = strconv.AppendInt(append(dst, ','), int64(val), 10)
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}
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}
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dst = append(dst, ']')
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return dst
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}
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// AppendInt8 converts the input []int8 to a string and
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// appends the encoded string to the input byte slice.
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func (Encoder) AppendInt8(dst []byte, val int8) []byte {
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return strconv.AppendInt(dst, int64(val), 10)
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}
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// AppendInts8 encodes the input int8s to json and
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// appends the encoded string list to the input byte slice.
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func (Encoder) AppendInts8(dst []byte, vals []int8) []byte {
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if len(vals) == 0 {
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return append(dst, '[', ']')
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}
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dst = append(dst, '[')
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dst = strconv.AppendInt(dst, int64(vals[0]), 10)
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if len(vals) > 1 {
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for _, val := range vals[1:] {
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dst = strconv.AppendInt(append(dst, ','), int64(val), 10)
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}
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}
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dst = append(dst, ']')
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return dst
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}
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// AppendInt16 converts the input int16 to a string and
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// appends the encoded string to the input byte slice.
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func (Encoder) AppendInt16(dst []byte, val int16) []byte {
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return strconv.AppendInt(dst, int64(val), 10)
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}
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// AppendInts16 encodes the input int16s to json and
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// appends the encoded string list to the input byte slice.
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func (Encoder) AppendInts16(dst []byte, vals []int16) []byte {
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if len(vals) == 0 {
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return append(dst, '[', ']')
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}
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dst = append(dst, '[')
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dst = strconv.AppendInt(dst, int64(vals[0]), 10)
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if len(vals) > 1 {
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for _, val := range vals[1:] {
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dst = strconv.AppendInt(append(dst, ','), int64(val), 10)
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}
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}
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dst = append(dst, ']')
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return dst
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}
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// AppendInt32 converts the input int32 to a string and
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// appends the encoded string to the input byte slice.
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func (Encoder) AppendInt32(dst []byte, val int32) []byte {
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return strconv.AppendInt(dst, int64(val), 10)
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}
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// AppendInts32 encodes the input int32s to json and
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// appends the encoded string list to the input byte slice.
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func (Encoder) AppendInts32(dst []byte, vals []int32) []byte {
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if len(vals) == 0 {
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return append(dst, '[', ']')
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}
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dst = append(dst, '[')
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dst = strconv.AppendInt(dst, int64(vals[0]), 10)
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if len(vals) > 1 {
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for _, val := range vals[1:] {
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dst = strconv.AppendInt(append(dst, ','), int64(val), 10)
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}
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}
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dst = append(dst, ']')
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return dst
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}
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// AppendInt64 converts the input int64 to a string and
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// appends the encoded string to the input byte slice.
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func (Encoder) AppendInt64(dst []byte, val int64) []byte {
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return strconv.AppendInt(dst, val, 10)
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}
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// AppendInts64 encodes the input int64s to json and
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// appends the encoded string list to the input byte slice.
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func (Encoder) AppendInts64(dst []byte, vals []int64) []byte {
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if len(vals) == 0 {
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return append(dst, '[', ']')
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}
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dst = append(dst, '[')
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dst = strconv.AppendInt(dst, vals[0], 10)
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if len(vals) > 1 {
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for _, val := range vals[1:] {
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dst = strconv.AppendInt(append(dst, ','), val, 10)
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}
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}
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dst = append(dst, ']')
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return dst
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}
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// AppendUint converts the input uint to a string and
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// appends the encoded string to the input byte slice.
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func (Encoder) AppendUint(dst []byte, val uint) []byte {
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return strconv.AppendUint(dst, uint64(val), 10)
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}
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// AppendUints encodes the input uints to json and
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// appends the encoded string list to the input byte slice.
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func (Encoder) AppendUints(dst []byte, vals []uint) []byte {
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if len(vals) == 0 {
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return append(dst, '[', ']')
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}
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dst = append(dst, '[')
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dst = strconv.AppendUint(dst, uint64(vals[0]), 10)
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if len(vals) > 1 {
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for _, val := range vals[1:] {
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dst = strconv.AppendUint(append(dst, ','), uint64(val), 10)
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}
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}
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dst = append(dst, ']')
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return dst
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}
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// AppendUint8 converts the input uint8 to a string and
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// appends the encoded string to the input byte slice.
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func (Encoder) AppendUint8(dst []byte, val uint8) []byte {
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return strconv.AppendUint(dst, uint64(val), 10)
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}
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// AppendUints8 encodes the input uint8s to json and
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// appends the encoded string list to the input byte slice.
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func (Encoder) AppendUints8(dst []byte, vals []uint8) []byte {
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if len(vals) == 0 {
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return append(dst, '[', ']')
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}
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dst = append(dst, '[')
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dst = strconv.AppendUint(dst, uint64(vals[0]), 10)
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if len(vals) > 1 {
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for _, val := range vals[1:] {
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dst = strconv.AppendUint(append(dst, ','), uint64(val), 10)
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}
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}
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dst = append(dst, ']')
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return dst
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}
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// AppendUint16 converts the input uint16 to a string and
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// appends the encoded string to the input byte slice.
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func (Encoder) AppendUint16(dst []byte, val uint16) []byte {
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return strconv.AppendUint(dst, uint64(val), 10)
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}
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// AppendUints16 encodes the input uint16s to json and
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// appends the encoded string list to the input byte slice.
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func (Encoder) AppendUints16(dst []byte, vals []uint16) []byte {
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if len(vals) == 0 {
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return append(dst, '[', ']')
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}
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dst = append(dst, '[')
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dst = strconv.AppendUint(dst, uint64(vals[0]), 10)
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if len(vals) > 1 {
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for _, val := range vals[1:] {
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dst = strconv.AppendUint(append(dst, ','), uint64(val), 10)
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}
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}
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dst = append(dst, ']')
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return dst
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}
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// AppendUint32 converts the input uint32 to a string and
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// appends the encoded string to the input byte slice.
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func (Encoder) AppendUint32(dst []byte, val uint32) []byte {
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return strconv.AppendUint(dst, uint64(val), 10)
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}
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// AppendUints32 encodes the input uint32s to json and
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// appends the encoded string list to the input byte slice.
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func (Encoder) AppendUints32(dst []byte, vals []uint32) []byte {
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if len(vals) == 0 {
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return append(dst, '[', ']')
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}
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dst = append(dst, '[')
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dst = strconv.AppendUint(dst, uint64(vals[0]), 10)
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if len(vals) > 1 {
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for _, val := range vals[1:] {
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dst = strconv.AppendUint(append(dst, ','), uint64(val), 10)
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}
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}
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dst = append(dst, ']')
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return dst
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}
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// AppendUint64 converts the input uint64 to a string and
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// appends the encoded string to the input byte slice.
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func (Encoder) AppendUint64(dst []byte, val uint64) []byte {
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return strconv.AppendUint(dst, val, 10)
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}
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// AppendUints64 encodes the input uint64s to json and
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// appends the encoded string list to the input byte slice.
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func (Encoder) AppendUints64(dst []byte, vals []uint64) []byte {
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if len(vals) == 0 {
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return append(dst, '[', ']')
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}
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dst = append(dst, '[')
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dst = strconv.AppendUint(dst, vals[0], 10)
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if len(vals) > 1 {
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for _, val := range vals[1:] {
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dst = strconv.AppendUint(append(dst, ','), val, 10)
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}
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}
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dst = append(dst, ']')
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return dst
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}
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func appendFloat(dst []byte, val float64, bitSize int) []byte {
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// JSON does not permit NaN or Infinity. A typical JSON encoder would fail
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// with an error, but a logging library wants the data to get through so we
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// make a tradeoff and store those types as string.
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switch {
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case math.IsNaN(val):
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return append(dst, `"NaN"`...)
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case math.IsInf(val, 1):
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return append(dst, `"+Inf"`...)
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case math.IsInf(val, -1):
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return append(dst, `"-Inf"`...)
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}
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return strconv.AppendFloat(dst, val, 'f', -1, bitSize)
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}
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// AppendFloat32 converts the input float32 to a string and
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// appends the encoded string to the input byte slice.
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func (Encoder) AppendFloat32(dst []byte, val float32) []byte {
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return appendFloat(dst, float64(val), 32)
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}
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// AppendFloats32 encodes the input float32s to json and
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// appends the encoded string list to the input byte slice.
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func (Encoder) AppendFloats32(dst []byte, vals []float32) []byte {
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if len(vals) == 0 {
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return append(dst, '[', ']')
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}
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dst = append(dst, '[')
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dst = appendFloat(dst, float64(vals[0]), 32)
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if len(vals) > 1 {
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for _, val := range vals[1:] {
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dst = appendFloat(append(dst, ','), float64(val), 32)
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}
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}
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dst = append(dst, ']')
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return dst
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}
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// AppendFloat64 converts the input float64 to a string and
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// appends the encoded string to the input byte slice.
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func (Encoder) AppendFloat64(dst []byte, val float64) []byte {
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return appendFloat(dst, val, 64)
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}
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// AppendFloats64 encodes the input float64s to json and
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// appends the encoded string list to the input byte slice.
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func (Encoder) AppendFloats64(dst []byte, vals []float64) []byte {
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if len(vals) == 0 {
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return append(dst, '[', ']')
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}
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dst = append(dst, '[')
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dst = appendFloat(dst, vals[0], 64)
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if len(vals) > 1 {
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for _, val := range vals[1:] {
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dst = appendFloat(append(dst, ','), val, 64)
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}
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}
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dst = append(dst, ']')
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return dst
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}
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// AppendInterface marshals the input interface to a string and
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// appends the encoded string to the input byte slice.
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func (e Encoder) AppendInterface(dst []byte, i interface{}) []byte {
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marshaled, err := JSONMarshalFunc(i)
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if err != nil {
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return e.AppendString(dst, fmt.Sprintf("marshaling error: %v", err))
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}
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return append(dst, marshaled...)
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}
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// AppendType appends the parameter type (as a string) to the input byte slice.
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func (e Encoder) AppendType(dst []byte, i interface{}) []byte {
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if i == nil {
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return e.AppendString(dst, "<nil>")
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}
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return e.AppendString(dst, reflect.TypeOf(i).String())
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}
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// AppendObjectData takes in an object that is already in a byte array
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// and adds it to the dst.
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func (Encoder) AppendObjectData(dst []byte, o []byte) []byte {
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// Three conditions apply here:
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// 1. new content starts with '{' - which should be dropped OR
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// 2. new content starts with '{' - which should be replaced with ','
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// to separate with existing content OR
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// 3. existing content has already other fields
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if o[0] == '{' {
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if len(dst) > 1 {
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dst = append(dst, ',')
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}
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o = o[1:]
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} else if len(dst) > 1 {
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dst = append(dst, ',')
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}
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return append(dst, o...)
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}
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// AppendIPAddr adds IPv4 or IPv6 address to dst.
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func (e Encoder) AppendIPAddr(dst []byte, ip net.IP) []byte {
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return e.AppendString(dst, ip.String())
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}
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// AppendIPPrefix adds IPv4 or IPv6 Prefix (address & mask) to dst.
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func (e Encoder) AppendIPPrefix(dst []byte, pfx net.IPNet) []byte {
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return e.AppendString(dst, pfx.String())
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}
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// AppendMACAddr adds MAC address to dst.
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func (e Encoder) AppendMACAddr(dst []byte, ha net.HardwareAddr) []byte {
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return e.AppendString(dst, ha.String())
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}
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