Created
April 1, 2014 10:27
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Goで文字列のエンコード/デコードのサンプル
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package main | |
import ( | |
"bytes" | |
"fmt" | |
"io/ioutil" | |
"code.google.com/p/go.text/encoding" | |
"code.google.com/p/go.text/encoding/japanese" | |
"code.google.com/p/go.text/transform" | |
) | |
func Encode(encname string, b []byte) ([]byte, error) { | |
enc, err := enc(encname) | |
if err != nil { | |
return nil, err | |
} | |
r := bytes.NewBuffer(b) | |
encoded, err := ioutil.ReadAll(transform.NewReader(r, enc.NewEncoder())) | |
return encoded, err | |
} | |
func Decode(encname string, b []byte) ([]byte, error) { | |
enc, err := enc(encname) | |
if err != nil { | |
return nil, err | |
} | |
r := bytes.NewBuffer(b) | |
decoded, err := ioutil.ReadAll(transform.NewReader(r, enc.NewDecoder())) | |
return decoded, err | |
} | |
func enc(encname string) (enc encoding.Encoding, err error) { | |
switch encname { | |
case "ShiftJIS": | |
enc = japanese.ShiftJIS | |
case "EUCJP": | |
enc = japanese.EUCJP | |
case "ISO2022JP": | |
enc = japanese.ISO2022JP | |
default: | |
err = fmt.Errorf("Unknown encname %s", encname) | |
} | |
return | |
} | |
func main() { | |
b := []byte("ほげふがぴよ") | |
encname := "ShiftJIS" | |
sjis, _ := Encode(encname, b) | |
if sjis != nil && !bytes.Equal(sjis, b) { | |
fmt.Println("encoded") | |
} | |
utf8, _ := Decode(encname, sjis) | |
if utf8 != nil && bytes.Equal(utf8, b) { | |
fmt.Println("decoded") | |
} | |
} |
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こんなかんじ?