Go
Codifica Base64

Sintassi

• func (enc * base64.Encoding) Encode (dst, src [] byte)
• func (enc * base64.Encoding) Decode (dst, src [] byte) (n int, errore err)
• func (enc * base64.Encoding) EncodeToString (src [] byte) string
• func (enc * base64.Encoding) DecodeString (s stringa) ([] byte, errore)

Osservazioni

Codifica

const foobar = `foo bar`
encoding := base64.StdEncoding
encodedFooBar := make([]byte, encoding.EncodedLen(len(foobar)))
encoding.Encode(encodedFooBar, []byte(foobar))
fmt.Printf("%s", encodedFooBar)
// Output: Zm9vIGJhcg==

Terreno di gioco

Codifica in una stringa

str := base64.StdEncoding.EncodeToString([]byte(`foo bar`))
fmt.Println(str)
// Output: Zm9vIGJhcg==

Terreno di gioco

decodifica

encoding := base64.StdEncoding
data := []byte(`Zm9vIGJhcg==`)
decoded := make([]byte, encoding.DecodedLen(len(data)))
n, err := encoding.Decode(decoded, data)
if err != nil {
    log.Fatal(err)
}

// Because we don't know the length of the data that is encoded
// (only the max length), we need to trim the buffer to whatever
// the actual length of the decoded data was.
decoded = decoded[:n]

fmt.Printf("`%s`", decoded)
// Output: `foo bar`

Terreno di gioco

Decodifica di una stringa

decoded, err := base64.StdEncoding.DecodeString(`biws`)
if err != nil {
    log.Fatal(err)
}

fmt.Printf("%s", decoded)
// Output: n,,

Terreno di gioco