diff options
Diffstat (limited to 'vendor/github.com/vmihailenco/msgpack/v5/time.go')
-rw-r--r-- | vendor/github.com/vmihailenco/msgpack/v5/time.go | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/vendor/github.com/vmihailenco/msgpack/v5/time.go b/vendor/github.com/vmihailenco/msgpack/v5/time.go new file mode 100644 index 00000000..44566ec0 --- /dev/null +++ b/vendor/github.com/vmihailenco/msgpack/v5/time.go @@ -0,0 +1,145 @@ +package msgpack + +import ( + "encoding/binary" + "fmt" + "reflect" + "time" + + "github.com/vmihailenco/msgpack/v5/msgpcode" +) + +var timeExtID int8 = -1 + +func init() { + RegisterExtEncoder(timeExtID, time.Time{}, timeEncoder) + RegisterExtDecoder(timeExtID, time.Time{}, timeDecoder) +} + +func timeEncoder(e *Encoder, v reflect.Value) ([]byte, error) { + return e.encodeTime(v.Interface().(time.Time)), nil +} + +func timeDecoder(d *Decoder, v reflect.Value, extLen int) error { + tm, err := d.decodeTime(extLen) + if err != nil { + return err + } + + ptr := v.Addr().Interface().(*time.Time) + *ptr = tm + + return nil +} + +func (e *Encoder) EncodeTime(tm time.Time) error { + b := e.encodeTime(tm) + if err := e.encodeExtLen(len(b)); err != nil { + return err + } + if err := e.w.WriteByte(byte(timeExtID)); err != nil { + return err + } + return e.write(b) +} + +func (e *Encoder) encodeTime(tm time.Time) []byte { + if e.timeBuf == nil { + e.timeBuf = make([]byte, 12) + } + + secs := uint64(tm.Unix()) + if secs>>34 == 0 { + data := uint64(tm.Nanosecond())<<34 | secs + + if data&0xffffffff00000000 == 0 { + b := e.timeBuf[:4] + binary.BigEndian.PutUint32(b, uint32(data)) + return b + } + + b := e.timeBuf[:8] + binary.BigEndian.PutUint64(b, data) + return b + } + + b := e.timeBuf[:12] + binary.BigEndian.PutUint32(b, uint32(tm.Nanosecond())) + binary.BigEndian.PutUint64(b[4:], secs) + return b +} + +func (d *Decoder) DecodeTime() (time.Time, error) { + c, err := d.readCode() + if err != nil { + return time.Time{}, err + } + + // Legacy format. + if c == msgpcode.FixedArrayLow|2 { + sec, err := d.DecodeInt64() + if err != nil { + return time.Time{}, err + } + + nsec, err := d.DecodeInt64() + if err != nil { + return time.Time{}, err + } + + return time.Unix(sec, nsec), nil + } + + if msgpcode.IsString(c) { + s, err := d.string(c) + if err != nil { + return time.Time{}, err + } + return time.Parse(time.RFC3339Nano, s) + } + + extID, extLen, err := d.extHeader(c) + if err != nil { + return time.Time{}, err + } + + if extID != timeExtID { + return time.Time{}, fmt.Errorf("msgpack: invalid time ext id=%d", extID) + } + + tm, err := d.decodeTime(extLen) + if err != nil { + return tm, err + } + + if tm.IsZero() { + // Zero time does not have timezone information. + return tm.UTC(), nil + } + return tm, nil +} + +func (d *Decoder) decodeTime(extLen int) (time.Time, error) { + b, err := d.readN(extLen) + if err != nil { + return time.Time{}, err + } + + switch len(b) { + case 4: + sec := binary.BigEndian.Uint32(b) + return time.Unix(int64(sec), 0), nil + case 8: + sec := binary.BigEndian.Uint64(b) + nsec := int64(sec >> 34) + sec &= 0x00000003ffffffff + return time.Unix(int64(sec), nsec), nil + case 12: + nsec := binary.BigEndian.Uint32(b) + sec := binary.BigEndian.Uint64(b[4:]) + return time.Unix(int64(sec), int64(nsec)), nil + default: + err = fmt.Errorf("msgpack: invalid ext len=%d decoding time", extLen) + return time.Time{}, err + } +} |