10 examples of 'golang generate random string' in Go

29
func GenerateRandString(length int) string {
30
	r := rand.New(rand.NewSource(time.Now().Unix()))
31
	bytes := make([]byte, length)
32
	for i := 0; i < length; i++ {
33
		b := r.Intn(26) + 65
34
		bytes[i] = byte(b)
35
	}
36
	return strings.ToLower(string(bytes))
37
}

25
func GenerateString(length int) string {
26
	const charset = "abcdefghijklmnopqrstuvwxyz" +
27
		"ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
28
	var seededRand *rand.Rand = rand.New(
29
		rand.NewSource(time.Now().UnixNano()))
30
31
	b := make([]byte, length)
32
	for i := range b {
33
		b[i] = charset[seededRand.Intn(len(charset))]
34
	}
35
	return string(b)
36
}

76
func RandomString(strlen int) string {
77
	rand.Seed(time.Now().UTC().UnixNano())
78
	const chars = "abcdefghijklmnopqrstuvwzyz0123456789/"
79
	result := make([]byte, strlen)
80
	for i := 0; i < strlen; i++ {
81
		result[i] = chars[rand.Intn(len(chars))]
82
	}
83
	return string(result)
84
}

67
func RandomString() string {
68
	suffix := make([]byte, randSuffixLen)
69
70
	for i := range suffix {
71
		suffix[i] = letterBytes[rand.Intn(len(letterBytes))]
72
	}
73
	return string(suffix)
74
}

78
func RandomString(length int) string {
79
	src := rand.NewSource(time.Now().UnixNano())
80
	b := make([]byte, length)
81
	for i, cache, remain := length-1, src.Int63(), letterIndexMax; i >= 0; {
82
		if remain == 0 {
83
			cache, remain = src.Int63(), letterIndexMax
84
		}
85
		if idx := int(cache & letterIndexMask); idx < len(letterBytes) {
86
			b[i] = letterBytes[idx]
87
			i--
88
		}
89
		cache >>= letterIndexBits
90
		remain--
91
	}
92
93
	return string(b)
94
}

63
func GenerateRandomString() string {
64
	length := 32
65
	rand.Seed(time.Now().UTC().UnixNano())
66
	const chars = "abcdefghijklmnopqrstuvwxyz0123456789"
67
	result := make([]byte, length)
68
	for i := 0; i < length; i++ {
69
		result[i] = chars[rand.Intn(len(chars))]
70
	}
71
	return string(result)
72
}

112
func (m *Misc) RandString(strlen int) string {
113
	codes := "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
114
	codeLen := len(codes)
115
	data := make([]byte, strlen)
116
	rand.Seed(time.Now().UnixNano() + rand.Int63() + rand.Int63() + rand.Int63() + rand.Int63())
117
	for i := 0; i < strlen; i++ {
118
		idx := rand.Intn(codeLen)
119
		data[i] = byte(codes[idx])
120
	}
121
	return string(data)
122
}

97
func randomString() (string, error) {
98
	buf := make([]byte, 32)
99
	_, err := rand.Read(buf)
100
	if err != nil {
101
		return "", err
102
	}
103
	str := base64.StdEncoding.EncodeToString(buf)
104
	return str, nil
105
}

230
func randomString(length int) string {
231
	var rng, offset, mode int;
232
233
	str := make([]int, length);
234
	for i := 0; i < length; i++ {
235
		mode = rand.Intn(3);
236
237
		if mode == 0 {
238
			rng, offset = 26, 65
239
		} else if mode == 1 {
240
			rng, offset = 26, 97
241
		} else {
242
			rng, offset = 10, 48
243
		}
244
245
		str[i] = rand.Intn(rng) + offset;
246
	}
247
248
	return string(str);
249
}

40
func GenerateRandomString(args RandomStringArgs) string {
41
	var r intner
42
	if args.R != nil {
43
		r = args.R
44
	} else {
45
		r = R
46
	}
47
	runes := args.Runes
48
	if len(runes) == 0 {
49
		runes = []rune(Base64Runes)
50
	}
51
	n := r.Intn(args.MaxLength-args.MinLength) + args.MinLength
52
	ret := make([]rune, n)
53
	for i := range ret {
54
		ret[i] = runes[r.Intn(len(runes))]
55
	}
56
	return string(ret)
57
}