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140 lines
2.8 KiB
140 lines
2.8 KiB
package msgpack
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import (
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"math"
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"reflect"
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"github.com/vmihailenco/msgpack/v5/msgpcode"
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)
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var stringSliceType = reflect.TypeOf(([]string)(nil))
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func encodeStringValue(e *Encoder, v reflect.Value) error {
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return e.EncodeString(v.String())
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}
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func encodeByteSliceValue(e *Encoder, v reflect.Value) error {
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return e.EncodeBytes(v.Bytes())
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}
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func encodeByteArrayValue(e *Encoder, v reflect.Value) error {
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if err := e.EncodeBytesLen(v.Len()); err != nil {
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return err
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}
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if v.CanAddr() {
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b := v.Slice(0, v.Len()).Bytes()
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return e.write(b)
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}
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e.buf = grow(e.buf, v.Len())
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reflect.Copy(reflect.ValueOf(e.buf), v)
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return e.write(e.buf)
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}
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func grow(b []byte, n int) []byte {
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if cap(b) >= n {
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return b[:n]
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}
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b = b[:cap(b)]
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b = append(b, make([]byte, n-len(b))...)
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return b
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}
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func (e *Encoder) EncodeBytesLen(l int) error {
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if l < 256 {
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return e.write1(msgpcode.Bin8, uint8(l))
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}
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if l <= math.MaxUint16 {
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return e.write2(msgpcode.Bin16, uint16(l))
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}
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return e.write4(msgpcode.Bin32, uint32(l))
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}
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func (e *Encoder) encodeStringLen(l int) error {
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if l < 32 {
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return e.writeCode(msgpcode.FixedStrLow | byte(l))
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}
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if l < 256 {
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return e.write1(msgpcode.Str8, uint8(l))
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}
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if l <= math.MaxUint16 {
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return e.write2(msgpcode.Str16, uint16(l))
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}
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return e.write4(msgpcode.Str32, uint32(l))
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}
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func (e *Encoder) EncodeString(v string) error {
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if intern := e.flags&useInternedStringsFlag != 0; intern || len(e.dict) > 0 {
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return e.encodeInternedString(v, intern)
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}
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return e.encodeNormalString(v)
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}
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func (e *Encoder) encodeNormalString(v string) error {
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if err := e.encodeStringLen(len(v)); err != nil {
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return err
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}
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return e.writeString(v)
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}
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func (e *Encoder) EncodeBytes(v []byte) error {
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if v == nil {
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return e.EncodeNil()
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}
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if err := e.EncodeBytesLen(len(v)); err != nil {
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return err
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}
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return e.write(v)
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}
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func (e *Encoder) EncodeArrayLen(l int) error {
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if l < 16 {
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return e.writeCode(msgpcode.FixedArrayLow | byte(l))
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}
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if l <= math.MaxUint16 {
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return e.write2(msgpcode.Array16, uint16(l))
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}
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return e.write4(msgpcode.Array32, uint32(l))
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}
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func encodeStringSliceValue(e *Encoder, v reflect.Value) error {
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ss := v.Convert(stringSliceType).Interface().([]string)
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return e.encodeStringSlice(ss)
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}
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func (e *Encoder) encodeStringSlice(s []string) error {
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if s == nil {
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return e.EncodeNil()
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}
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if err := e.EncodeArrayLen(len(s)); err != nil {
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return err
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}
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for _, v := range s {
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if err := e.EncodeString(v); err != nil {
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return err
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}
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}
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return nil
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}
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func encodeSliceValue(e *Encoder, v reflect.Value) error {
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if v.IsNil() {
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return e.EncodeNil()
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}
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return encodeArrayValue(e, v)
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}
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func encodeArrayValue(e *Encoder, v reflect.Value) error {
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l := v.Len()
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if err := e.EncodeArrayLen(l); err != nil {
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return err
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}
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for i := 0; i < l; i++ {
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if err := e.EncodeValue(v.Index(i)); err != nil {
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return err
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}
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}
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return nil
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}
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