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-rw-r--r--vendor/github.com/mailru/easyjson/jwriter/writer.go302
1 files changed, 302 insertions, 0 deletions
diff --git a/vendor/github.com/mailru/easyjson/jwriter/writer.go b/vendor/github.com/mailru/easyjson/jwriter/writer.go
new file mode 100644
index 000000000..04bfddf70
--- /dev/null
+++ b/vendor/github.com/mailru/easyjson/jwriter/writer.go
@@ -0,0 +1,302 @@
+// Package jwriter contains a JSON writer.
+package jwriter
+
+import (
+ "encoding/base64"
+ "io"
+ "strconv"
+ "unicode/utf8"
+
+ "github.com/mailru/easyjson/buffer"
+)
+
+// Flags describe various encoding options. The behavior may be actually implemented in the encoder, but
+// Flags field in Writer is used to set and pass them around.
+type Flags int
+
+const (
+ NilMapAsEmpty Flags = 1 << iota // Encode nil map as '{}' rather than 'null'.
+ NilSliceAsEmpty // Encode nil slice as '[]' rather than 'null'.
+)
+
+// Writer is a JSON writer.
+type Writer struct {
+ Flags Flags
+
+ Error error
+ Buffer buffer.Buffer
+ NoEscapeHTML bool
+}
+
+// Size returns the size of the data that was written out.
+func (w *Writer) Size() int {
+ return w.Buffer.Size()
+}
+
+// DumpTo outputs the data to given io.Writer, resetting the buffer.
+func (w *Writer) DumpTo(out io.Writer) (written int, err error) {
+ return w.Buffer.DumpTo(out)
+}
+
+// BuildBytes returns writer data as a single byte slice.
+func (w *Writer) BuildBytes() ([]byte, error) {
+ if w.Error != nil {
+ return nil, w.Error
+ }
+
+ return w.Buffer.BuildBytes(), nil
+}
+
+// RawByte appends raw binary data to the buffer.
+func (w *Writer) RawByte(c byte) {
+ w.Buffer.AppendByte(c)
+}
+
+// RawByte appends raw binary data to the buffer.
+func (w *Writer) RawString(s string) {
+ w.Buffer.AppendString(s)
+}
+
+// RawByte appends raw binary data to the buffer or sets the error if it is given. Useful for
+// calling with results of MarshalJSON-like functions.
+func (w *Writer) Raw(data []byte, err error) {
+ switch {
+ case w.Error != nil:
+ return
+ case err != nil:
+ w.Error = err
+ case len(data) > 0:
+ w.Buffer.AppendBytes(data)
+ default:
+ w.RawString("null")
+ }
+}
+
+// Base64Bytes appends data to the buffer after base64 encoding it
+func (w *Writer) Base64Bytes(data []byte) {
+ if data == nil {
+ w.Buffer.AppendString("null")
+ return
+ }
+ w.Buffer.AppendByte('"')
+ dst := make([]byte, base64.StdEncoding.EncodedLen(len(data)))
+ base64.StdEncoding.Encode(dst, data)
+ w.Buffer.AppendBytes(dst)
+ w.Buffer.AppendByte('"')
+}
+
+func (w *Writer) Uint8(n uint8) {
+ w.Buffer.EnsureSpace(3)
+ w.Buffer.Buf = strconv.AppendUint(w.Buffer.Buf, uint64(n), 10)
+}
+
+func (w *Writer) Uint16(n uint16) {
+ w.Buffer.EnsureSpace(5)
+ w.Buffer.Buf = strconv.AppendUint(w.Buffer.Buf, uint64(n), 10)
+}
+
+func (w *Writer) Uint32(n uint32) {
+ w.Buffer.EnsureSpace(10)
+ w.Buffer.Buf = strconv.AppendUint(w.Buffer.Buf, uint64(n), 10)
+}
+
+func (w *Writer) Uint(n uint) {
+ w.Buffer.EnsureSpace(20)
+ w.Buffer.Buf = strconv.AppendUint(w.Buffer.Buf, uint64(n), 10)
+}
+
+func (w *Writer) Uint64(n uint64) {
+ w.Buffer.EnsureSpace(20)
+ w.Buffer.Buf = strconv.AppendUint(w.Buffer.Buf, n, 10)
+}
+
+func (w *Writer) Int8(n int8) {
+ w.Buffer.EnsureSpace(4)
+ w.Buffer.Buf = strconv.AppendInt(w.Buffer.Buf, int64(n), 10)
+}
+
+func (w *Writer) Int16(n int16) {
+ w.Buffer.EnsureSpace(6)
+ w.Buffer.Buf = strconv.AppendInt(w.Buffer.Buf, int64(n), 10)
+}
+
+func (w *Writer) Int32(n int32) {
+ w.Buffer.EnsureSpace(11)
+ w.Buffer.Buf = strconv.AppendInt(w.Buffer.Buf, int64(n), 10)
+}
+
+func (w *Writer) Int(n int) {
+ w.Buffer.EnsureSpace(21)
+ w.Buffer.Buf = strconv.AppendInt(w.Buffer.Buf, int64(n), 10)
+}
+
+func (w *Writer) Int64(n int64) {
+ w.Buffer.EnsureSpace(21)
+ w.Buffer.Buf = strconv.AppendInt(w.Buffer.Buf, n, 10)
+}
+
+func (w *Writer) Uint8Str(n uint8) {
+ w.Buffer.EnsureSpace(3)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+ w.Buffer.Buf = strconv.AppendUint(w.Buffer.Buf, uint64(n), 10)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+}
+
+func (w *Writer) Uint16Str(n uint16) {
+ w.Buffer.EnsureSpace(5)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+ w.Buffer.Buf = strconv.AppendUint(w.Buffer.Buf, uint64(n), 10)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+}
+
+func (w *Writer) Uint32Str(n uint32) {
+ w.Buffer.EnsureSpace(10)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+ w.Buffer.Buf = strconv.AppendUint(w.Buffer.Buf, uint64(n), 10)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+}
+
+func (w *Writer) UintStr(n uint) {
+ w.Buffer.EnsureSpace(20)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+ w.Buffer.Buf = strconv.AppendUint(w.Buffer.Buf, uint64(n), 10)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+}
+
+func (w *Writer) Uint64Str(n uint64) {
+ w.Buffer.EnsureSpace(20)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+ w.Buffer.Buf = strconv.AppendUint(w.Buffer.Buf, n, 10)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+}
+
+func (w *Writer) Int8Str(n int8) {
+ w.Buffer.EnsureSpace(4)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+ w.Buffer.Buf = strconv.AppendInt(w.Buffer.Buf, int64(n), 10)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+}
+
+func (w *Writer) Int16Str(n int16) {
+ w.Buffer.EnsureSpace(6)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+ w.Buffer.Buf = strconv.AppendInt(w.Buffer.Buf, int64(n), 10)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+}
+
+func (w *Writer) Int32Str(n int32) {
+ w.Buffer.EnsureSpace(11)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+ w.Buffer.Buf = strconv.AppendInt(w.Buffer.Buf, int64(n), 10)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+}
+
+func (w *Writer) IntStr(n int) {
+ w.Buffer.EnsureSpace(21)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+ w.Buffer.Buf = strconv.AppendInt(w.Buffer.Buf, int64(n), 10)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+}
+
+func (w *Writer) Int64Str(n int64) {
+ w.Buffer.EnsureSpace(21)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+ w.Buffer.Buf = strconv.AppendInt(w.Buffer.Buf, n, 10)
+ w.Buffer.Buf = append(w.Buffer.Buf, '"')
+}
+
+func (w *Writer) Float32(n float32) {
+ w.Buffer.EnsureSpace(20)
+ w.Buffer.Buf = strconv.AppendFloat(w.Buffer.Buf, float64(n), 'g', -1, 32)
+}
+
+func (w *Writer) Float64(n float64) {
+ w.Buffer.EnsureSpace(20)
+ w.Buffer.Buf = strconv.AppendFloat(w.Buffer.Buf, n, 'g', -1, 64)
+}
+
+func (w *Writer) Bool(v bool) {
+ w.Buffer.EnsureSpace(5)
+ if v {
+ w.Buffer.Buf = append(w.Buffer.Buf, "true"...)
+ } else {
+ w.Buffer.Buf = append(w.Buffer.Buf, "false"...)
+ }
+}
+
+const chars = "0123456789abcdef"
+
+func isNotEscapedSingleChar(c byte, escapeHTML bool) bool {
+ // Note: might make sense to use a table if there are more chars to escape. With 4 chars
+ // it benchmarks the same.
+ if escapeHTML {
+ return c != '<' && c != '>' && c != '&' && c != '\\' && c != '"' && c >= 0x20 && c < utf8.RuneSelf
+ } else {
+ return c != '\\' && c != '"' && c >= 0x20 && c < utf8.RuneSelf
+ }
+}
+
+func (w *Writer) String(s string) {
+ w.Buffer.AppendByte('"')
+
+ // Portions of the string that contain no escapes are appended as
+ // byte slices.
+
+ p := 0 // last non-escape symbol
+
+ for i := 0; i < len(s); {
+ c := s[i]
+
+ if isNotEscapedSingleChar(c, !w.NoEscapeHTML) {
+ // single-width character, no escaping is required
+ i++
+ continue
+ } else if c < utf8.RuneSelf {
+ // single-with character, need to escape
+ w.Buffer.AppendString(s[p:i])
+ switch c {
+ case '\t':
+ w.Buffer.AppendString(`\t`)
+ case '\r':
+ w.Buffer.AppendString(`\r`)
+ case '\n':
+ w.Buffer.AppendString(`\n`)
+ case '\\':
+ w.Buffer.AppendString(`\\`)
+ case '"':
+ w.Buffer.AppendString(`\"`)
+ default:
+ w.Buffer.AppendString(`\u00`)
+ w.Buffer.AppendByte(chars[c>>4])
+ w.Buffer.AppendByte(chars[c&0xf])
+ }
+
+ i++
+ p = i
+ continue
+ }
+
+ // broken utf
+ runeValue, runeWidth := utf8.DecodeRuneInString(s[i:])
+ if runeValue == utf8.RuneError && runeWidth == 1 {
+ w.Buffer.AppendString(s[p:i])
+ w.Buffer.AppendString(`\ufffd`)
+ i++
+ p = i
+ continue
+ }
+
+ // jsonp stuff - tab separator and line separator
+ if runeValue == '\u2028' || runeValue == '\u2029' {
+ w.Buffer.AppendString(s[p:i])
+ w.Buffer.AppendString(`\u202`)
+ w.Buffer.AppendByte(chars[runeValue&0xf])
+ i += runeWidth
+ p = i
+ continue
+ }
+ i += runeWidth
+ }
+ w.Buffer.AppendString(s[p:])
+ w.Buffer.AppendByte('"')
+}
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-12-29 14:25:27 +0000