example_test.go

Documentation: encoding/base64

		 1  // Copyright 2012 The Go Authors. All rights reserved.
		 2  // Use of this source code is governed by a BSD-style
		 3  // license that can be found in the LICENSE file.
		 4  
		 5  // Keep in sync with ../base32/example_test.go.
		 6  
		 7  package base64_test
		 8  
		 9  import (
		10  	"encoding/base64"
		11  	"fmt"
		12  	"os"
		13  )
		14  
		15  func Example() {
		16  	msg := "Hello, 世界"
		17  	encoded := base64.StdEncoding.EncodeToString([]byte(msg))
		18  	fmt.Println(encoded)
		19  	decoded, err := base64.StdEncoding.DecodeString(encoded)
		20  	if err != nil {
		21  		fmt.Println("decode error:", err)
		22  		return
		23  	}
		24  	fmt.Println(string(decoded))
		25  	// Output:
		26  	// SGVsbG8sIOS4lueVjA==
		27  	// Hello, 世界
		28  }
		29  
		30  func ExampleEncoding_EncodeToString() {
		31  	data := []byte("any + old & data")
		32  	str := base64.StdEncoding.EncodeToString(data)
		33  	fmt.Println(str)
		34  	// Output:
		35  	// YW55ICsgb2xkICYgZGF0YQ==
		36  }
		37  
		38  func ExampleEncoding_DecodeString() {
		39  	str := "c29tZSBkYXRhIHdpdGggACBhbmQg77u/"
		40  	data, err := base64.StdEncoding.DecodeString(str)
		41  	if err != nil {
		42  		fmt.Println("error:", err)
		43  		return
		44  	}
		45  	fmt.Printf("%q\n", data)
		46  	// Output:
		47  	// "some data with \x00 and \ufeff"
		48  }
		49  
		50  func ExampleNewEncoder() {
		51  	input := []byte("foo\x00bar")
		52  	encoder := base64.NewEncoder(base64.StdEncoding, os.Stdout)
		53  	encoder.Write(input)
		54  	// Must close the encoder when finished to flush any partial blocks.
		55  	// If you comment out the following line, the last partial block "r"
		56  	// won't be encoded.
		57  	encoder.Close()
		58  	// Output:
		59  	// Zm9vAGJhcg==
		60  }
		61
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