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t808_0x8304.go 1.23 KB
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Your Name authored 2020-04-07 18:27 . 添加详细注释
package protocol
import (
"bytes"
"golang.org/x/text/encoding/simplifiedchinese"
"golang.org/x/text/transform"
"io/ioutil"
)
// 信息服务
type T808_0x8304 struct {
// 信息类型
Type byte
// 信息内容
Content string
}
func (entity *T808_0x8304) MsgID() MsgID {
return MsgT808_0x8304
}
func (entity *T808_0x8304) Encode() ([]byte, error) {
writer := NewWriter()
// 写入信息类型
writer.WriteByte(entity.Type)
// 写入信息长度
reader := bytes.NewReader([]byte(entity.Content))
data, err := ioutil.ReadAll(
transform.NewReader(reader, simplifiedchinese.GB18030.NewEncoder()))
if err != nil {
return nil, err
}
writer.WriteUint16(uint16(len(data)))
// 写入信息内容
writer.Write(data)
return writer.Bytes(), nil
}
func (entity *T808_0x8304) Decode(data []byte) (int, error) {
if len(data) < 3 {
return 0, ErrInvalidBody
}
reader := NewReader(data)
// 读取信息类型
var err error
entity.Type, err = reader.ReadByte()
if err != nil {
return 0, err
}
// 读取信息长度
size, err := reader.ReadUint16()
if err != nil {
return 0, err
}
// 读取信息内容
entity.Content, err = reader.ReadString(int(size))
if err != nil {
return 0, err
}
return len(data) - reader.Len(), nil
}
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