ntfy/util/util.go
2021-10-29 13:58:14 -04:00

30 lines
549 B
Go

package util
import (
"math/rand"
"os"
"time"
)
const (
randomStringCharset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
)
var (
random = rand.New(rand.NewSource(time.Now().UnixNano()))
)
func FileExists(filename string) bool {
stat, _ := os.Stat(filename)
return stat != nil
}
// RandomString returns a random string with a given length
func RandomString(length int) string {
b := make([]byte, length)
for i := range b {
b[i] = randomStringCharset[random.Intn(len(randomStringCharset))]
}
return string(b)
}