codekingpro/portable-devtools

1// Copyright 2016 The Go Authors. All rights reserved.2// Use of this source code is governed by a BSD-style3// license that can be found in the LICENSE file.4 5package hex_test6 7import (8	"encoding/hex"9	"fmt"10	"log"11	"os"12)13 14func ExampleEncode() {15	src := []byte("Hello Gopher!")16 17	dst := make([]byte, hex.EncodedLen(len(src)))18	hex.Encode(dst, src)19 20	fmt.Printf("%s\n", dst)21 22	// Output:23	// 48656c6c6f20476f706865722124}25 26func ExampleDecode() {27	src := []byte("48656c6c6f20476f7068657221")28 29	dst := make([]byte, hex.DecodedLen(len(src)))30	n, err := hex.Decode(dst, src)31	if err != nil {32		log.Fatal(err)33	}34 35	fmt.Printf("%s\n", dst[:n])36 37	// Output:38	// Hello Gopher!39}40 41func ExampleDecodeString() {42	const s = "48656c6c6f20476f7068657221"43	decoded, err := hex.DecodeString(s)44	if err != nil {45		log.Fatal(err)46	}47 48	fmt.Printf("%s\n", decoded)49 50	// Output:51	// Hello Gopher!52}53 54func ExampleDump() {55	content := []byte("Go is an open source programming language.")56 57	fmt.Printf("%s", hex.Dump(content))58 59	// Output:60	// 00000000  47 6f 20 69 73 20 61 6e  20 6f 70 65 6e 20 73 6f  |Go is an open so|61	// 00000010  75 72 63 65 20 70 72 6f  67 72 61 6d 6d 69 6e 67  |urce programming|62	// 00000020  20 6c 61 6e 67 75 61 67  65 2e                    | language.|63}64 65func ExampleDumper() {66	lines := []string{67		"Go is an open source programming language.",68		"\n",69		"We encourage all Go users to subscribe to golang-announce.",70	}71 72	stdoutDumper := hex.Dumper(os.Stdout)73 74	defer stdoutDumper.Close()75 76	for _, line := range lines {77		stdoutDumper.Write([]byte(line))78	}79 80	// Output:81	// 00000000  47 6f 20 69 73 20 61 6e  20 6f 70 65 6e 20 73 6f  |Go is an open so|82	// 00000010  75 72 63 65 20 70 72 6f  67 72 61 6d 6d 69 6e 67  |urce programming|83	// 00000020  20 6c 61 6e 67 75 61 67  65 2e 0a 57 65 20 65 6e  | language..We en|84	// 00000030  63 6f 75 72 61 67 65 20  61 6c 6c 20 47 6f 20 75  |courage all Go u|85	// 00000040  73 65 72 73 20 74 6f 20  73 75 62 73 63 72 69 62  |sers to subscrib|86	// 00000050  65 20 74 6f 20 67 6f 6c  61 6e 67 2d 61 6e 6e 6f  |e to golang-anno|87	// 00000060  75 6e 63 65 2e                                    |unce.|88}89 90func ExampleEncodeToString() {91	src := []byte("Hello")92	encodedStr := hex.EncodeToString(src)93 94	fmt.Printf("%s\n", encodedStr)95 96	// Output:97	// 48656c6c6f98}99