// Copyright 2012 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // Keep in sync with ../base32/example_test.go. package base64_test import ( "encoding/base64" "fmt" "os" ) func Example() { msg := "Hello, 世界" encoded := base64.StdEncoding.EncodeToString([]byte(msg)) fmt.Println(encoded) decoded, err := base64.StdEncoding.DecodeString(encoded) if err != nil { fmt.Println("decode error:", err) return } fmt.Println(string(decoded)) // Output: // SGVsbG8sIOS4lueVjA== // Hello, 世界 } func ExampleEncoding_EncodeToString() { data := []byte("any + old & data") str := base64.StdEncoding.EncodeToString(data) fmt.Println(str) // Output: // YW55ICsgb2xkICYgZGF0YQ== } func ExampleEncoding_Encode() { data := []byte("Hello, world!") dst := make([]byte, base64.StdEncoding.EncodedLen(len(data))) base64.StdEncoding.Encode(dst, data) fmt.Println(string(dst)) // Output: // SGVsbG8sIHdvcmxkIQ== } func ExampleEncoding_DecodeString() { str := "c29tZSBkYXRhIHdpdGggACBhbmQg77u/" data, err := base64.StdEncoding.DecodeString(str) if err != nil { fmt.Println("error:", err) return } fmt.Printf("%q\n", data) // Output: // "some data with \x00 and \ufeff" } func ExampleEncoding_Decode() { str := "SGVsbG8sIHdvcmxkIQ==" dst := make([]byte, base64.StdEncoding.DecodedLen(len(str))) n, err := base64.StdEncoding.Decode(dst, []byte(str)) if err != nil { fmt.Println("decode error:", err) return } dst = dst[:n] fmt.Printf("%q\n", dst) // Output: // "Hello, world!" } func ExampleNewEncoder() { input := []byte("foo\x00bar") encoder := base64.NewEncoder(base64.StdEncoding, os.Stdout) encoder.Write(input) // Must close the encoder when finished to flush any partial blocks. // If you comment out the following line, the last partial block "r" // won't be encoded. encoder.Close() // Output: // Zm9vAGJhcg== }