88 lines
2.2 KiB
Markdown
88 lines
2.2 KiB
Markdown
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Msgpack implementation for Golang
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=================================
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Supports:
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- Primitives, arrays, maps, structs and interface{}.
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- time.Time.
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- Appengine *datastore.Key and datastore.Cursor.
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- Extensions for user defined types.
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- Tags.
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API docs: http://godoc.org/github.com/vmihailenco/msgpack
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Installation
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------------
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Install:
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go get github.com/vmihailenco/msgpack
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Usage
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-----
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Examples:
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func ExampleEncode() {
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b, err := msgpack.Marshal(true)
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fmt.Printf("%v %#v\n", err, b)
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// Output: <nil> []byte{0xc3}
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}
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func ExampleDecode() {
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var out bool
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err := msgpack.Unmarshal([]byte{0xc3}, &out)
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fmt.Println(err, out)
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// Output: <nil> true
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}
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func ExampleMapStringInterface() {
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in := map[string]interface{}{"foo": 1, "hello": "world"}
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b, err := msgpack.Marshal(in)
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_ = err
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var out map[string]interface{}
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err = msgpack.Unmarshal(b, &out)
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fmt.Printf("%v %#v\n", err, out)
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// Output: <nil> map[string]interface {}{"foo":1, "hello":"world"}
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}
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func ExampleRecursiveMapStringInterface() {
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buf := &bytes.Buffer{}
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enc := msgpack.NewEncoder(buf)
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in := map[string]interface{}{"foo": map[string]interface{}{"hello": "world"}}
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_ = enc.Encode(in)
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dec := msgpack.NewDecoder(buf)
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dec.DecodeMapFunc = func(d *msgpack.Decoder) (interface{}, error) {
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n, err := d.DecodeMapLen()
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if err != nil {
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return nil, err
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}
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m := make(map[string]interface{}, n)
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for i := 0; i < n; i++ {
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mk, err := d.DecodeString()
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if err != nil {
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return nil, err
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}
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mv, err := d.DecodeInterface()
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if err != nil {
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return nil, err
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}
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m[mk] = mv
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}
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return m, nil
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}
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out, err := dec.DecodeInterface()
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fmt.Printf("%v %#v\n", err, out)
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// Output: <nil> map[string]interface {}{"foo":map[string]interface {}{"hello":"world"}}
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}
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Extensions
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----------
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Look at [appengine.go](https://github.com/vmihailenco/msgpack/blob/master/appengine.go) for example.
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