27 lines
836 B
Go
27 lines
836 B
Go
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// Copyright 2016 The Chihaya Authors. All rights reserved.
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// Use of this source code is governed by the BSD 2-Clause license,
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// which can be found in the LICENSE file.
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package random
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import "math/rand"
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// AlphaNumeric is an alphabet with all lower- and uppercase letters and
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// numbers.
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const AlphaNumeric = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
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// AlphaNumericString is a shorthand for String(r, l, AlphaNumeric).
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func AlphaNumericString(r rand.Source, l int) string {
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return String(r, l, AlphaNumeric)
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}
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// String generates a random string of length l, containing only runes from
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// the alphabet using the random source r.
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func String(r rand.Source, l int, alphabet string) string {
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b := make([]byte, l)
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for i := range b {
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b[i] = alphabet[r.Int63()%int64(len(alphabet))]
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}
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return string(b)
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}
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