forked from vmihailenco/msgpack
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathencode.go
140 lines (120 loc) · 2.58 KB
/
encode.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
package msgpack
import (
"bytes"
"io"
"reflect"
"time"
"github.com/gig/msgpack/codes"
)
type writer interface {
io.Writer
WriteByte(byte) error
WriteString(string) (int, error)
}
type byteWriter struct {
io.Writer
}
func (w byteWriter) WriteByte(b byte) error {
_, err := w.Write([]byte{b})
return err
}
func (w byteWriter) WriteString(s string) (int, error) {
return w.Write([]byte(s))
}
// Marshal returns the MessagePack encoding of v.
func Marshal(v ...interface{}) ([]byte, error) {
var buf bytes.Buffer
err := NewEncoder(&buf).Encode(v...)
return buf.Bytes(), err
}
type Encoder struct {
w writer
buf []byte
sortMapKeys bool
structAsArray bool
}
// NewEncoder returns a new encoder that writes to w.
func NewEncoder(w io.Writer) *Encoder {
bw, ok := w.(writer)
if !ok {
bw = byteWriter{Writer: w}
}
return &Encoder{
w: bw,
buf: make([]byte, 9),
}
}
// SortMapKeys causes the Encoder to encode map keys in increasing order.
// Supported map types are:
// - map[string]string
// - map[string]interface{}
func (e *Encoder) SortMapKeys(v bool) *Encoder {
e.sortMapKeys = v
return e
}
// StructAsArray causes the Encoder to encode Go structs as MessagePack arrays.
func (e *Encoder) StructAsArray(v bool) *Encoder {
e.structAsArray = v
return e
}
func (e *Encoder) Encode(v ...interface{}) error {
for _, vv := range v {
if err := e.encode(vv); err != nil {
return err
}
}
return nil
}
func (e *Encoder) encode(v interface{}) error {
switch v := v.(type) {
case nil:
return e.EncodeNil()
case string:
return e.EncodeString(v)
case []byte:
return e.EncodeBytes(v)
case int:
return e.EncodeInt(int64(v))
case int64:
return e.EncodeInt(v)
case uint:
return e.EncodeUint(uint64(v))
case uint64:
return e.EncodeUint(v)
case bool:
return e.EncodeBool(v)
case float32:
return e.EncodeFloat32(v)
case float64:
return e.EncodeFloat64(v)
case time.Duration:
return e.EncodeInt(int64(v))
case time.Time:
return e.EncodeTime(v)
}
return e.EncodeValue(reflect.ValueOf(v))
}
func (e *Encoder) EncodeValue(v reflect.Value) error {
encode := getEncoder(v.Type())
return encode(e, v)
}
func (e *Encoder) EncodeNil() error {
return e.writeCode(codes.Nil)
}
func (e *Encoder) EncodeBool(value bool) error {
if value {
return e.writeCode(codes.True)
}
return e.writeCode(codes.False)
}
func (e *Encoder) writeCode(c codes.Code) error {
return e.w.WriteByte(byte(c))
}
func (e *Encoder) write(b []byte) error {
_, err := e.w.Write(b)
return err
}
func (e *Encoder) writeString(s string) error {
_, err := e.w.WriteString(s)
return err
}