44 lines
1 KiB
Go
44 lines
1 KiB
Go
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package stringutils
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import (
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"crypto/rand"
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"encoding/hex"
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"io"
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mathrand "math/rand"
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"time"
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)
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// Generate 32 chars random string
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func GenerateRandomString() string {
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id := make([]byte, 32)
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if _, err := io.ReadFull(rand.Reader, id); err != nil {
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panic(err) // This shouldn't happen
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}
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return hex.EncodeToString(id)
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}
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// Generate alpha only random stirng with length n
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func GenerateRandomAlphaOnlyString(n int) string {
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// make a really long string
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letters := []byte("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
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b := make([]byte, n)
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r := mathrand.New(mathrand.NewSource(time.Now().UTC().UnixNano()))
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for i := range b {
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b[i] = letters[r.Intn(len(letters))]
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}
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return string(b)
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}
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// Generate Ascii random stirng with length n
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func GenerateRandomAsciiString(n int) string {
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chars := "abcdefghijklmnopqrstuvwxyz" +
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ" +
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"~!@#$%^&*()-_+={}[]\\|<,>.?/\"';:` "
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res := make([]byte, n)
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for i := 0; i < n; i++ {
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res[i] = chars[mathrand.Intn(len(chars))]
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}
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return string(res)
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}
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