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49 lines
876 B
Go
49 lines
876 B
Go
package random
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import (
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"math/rand"
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"strings"
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"time"
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)
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type (
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Random struct {
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}
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)
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// Charsets
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const (
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Uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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Lowercase = "abcdefghijklmnopqrstuvwxyz"
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Alphabetic = Uppercase + Lowercase
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Numeric = "0123456789"
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Alphanumeric = Alphabetic + Numeric
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Symbols = "`" + `~!@#$%^&*()-_+={}[]|\;:"<>,./?`
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Hex = Numeric + "abcdef"
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)
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var (
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global = New()
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)
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func New() *Random {
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rand.Seed(time.Now().UnixNano())
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return new(Random)
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}
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func (r *Random) String(length uint8, charsets ...string) string {
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charset := strings.Join(charsets, "")
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if charset == "" {
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charset = Alphanumeric
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}
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b := make([]byte, length)
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for i := range b {
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b[i] = charset[rand.Int63()%int64(len(charset))]
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}
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return string(b)
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}
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func String(length uint8, charsets ...string) string {
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return global.String(length, charsets...)
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}
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