go-gun/gun/util.go

package gun

import (
	"crypto/rand"
)

const randChars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"

func randString(n int) (s string) {
	// We accept that a multiple of 64 is %'d on 62 potentially favoring 0 or 1 more, but we don't care
	byts := make([]byte, n)
	if _, err := rand.Read(byts); err != nil {
		panic(err)
	}
	for _, byt := range byts {
		s += string(randChars[int(byt)%len(randChars)])
	}
	return s
}