mirror of
https://gitee.com/rainbond/Rainbond.git
synced 2024-12-05 21:27:47 +08:00
54 lines
1.4 KiB
Go
54 lines
1.4 KiB
Go
|
|
// RAINBOND, Application Management Platform
|
|
// Copyright (C) 2014-2017 Goodrain Co., Ltd.
|
|
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version. For any non-GPL usage of Rainbond,
|
|
// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
|
|
// must be obtained first.
|
|
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package utils
|
|
|
|
import (
|
|
"math/rand"
|
|
"time"
|
|
)
|
|
|
|
// ASCII values 33 ~ 126
|
|
const _dcl = 126 - 33 + 1
|
|
|
|
var defaultCharacters [_dcl]byte
|
|
|
|
func init() {
|
|
for i := 0; i < _dcl; i++ {
|
|
defaultCharacters[i] = byte(i + 33)
|
|
}
|
|
|
|
rand.Seed(time.Now().UnixNano())
|
|
}
|
|
|
|
func RandString(length int, characters ...byte) string {
|
|
if len(characters) == 0 {
|
|
characters = defaultCharacters[:]
|
|
}
|
|
|
|
n := len(characters)
|
|
var rs = make([]byte, length)
|
|
|
|
for i := 0; i < length; i++ {
|
|
rs[i] = characters[rand.Intn(n-1)]
|
|
}
|
|
|
|
return string(rs)
|
|
}
|