Update Text Component defination

chat/jsonmessage.go

@@ -0,0 +1,60 @@
+package chat
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"io"
+
+	pk "github.com/Tnze/go-mc/net/packet"
+)
+
+// JsonMessage is Message, unless when it is going to be Json instead of NBT
+type JsonMessage Message
+
+// ReadFrom decode Message in a JSON Text component
+func (m *JsonMessage) ReadFrom(r io.Reader) (int64, error) {
+	var code pk.String
+	n, err := code.ReadFrom(r)
+	if err != nil {
+		return n, err
+	}
+	err = json.Unmarshal([]byte(code), (*Message)(m))
+	return n, err
+}
+
+// WriteTo encode Message into a JSON Text component
+func (m JsonMessage) WriteTo(w io.Writer) (int64, error) {
+	code, err := json.Marshal(Message(m))
+	if err != nil {
+		panic(err)
+	}
+	return pk.String(code).WriteTo(w)
+}
+
+func (m Message) MarshalJSON() ([]byte, error) {
+	if m.Translate != "" {
+		return json.Marshal(translateMsg(m))
+	} else {
+		return json.Marshal(rawMsgStruct(m))
+	}
+}
+
+func (m *Message) UnmarshalJSON(raw []byte) (err error) {
+	raw = bytes.TrimSpace(raw)
+	if len(raw) == 0 {
+		return io.EOF
+	}
+	// The right way to distinguish JSON String and Object
+	// is to look up the first character.
+	switch raw[0] {
+	case '"':
+		return json.Unmarshal(raw, &m.Text) // Unmarshal as jsonString
+	case '{':
+		return json.Unmarshal(raw, (*rawMsgStruct)(m)) // Unmarshal as jsonMsg
+	case '[':
+		return json.Unmarshal(raw, &m.Extra) // Unmarshal as []Message
+	default:
+		return errors.New("unknown chat message type: '" + string(raw[0]) + "'")
+	}
+}