// Package common contains functions and types common to all (or most) packages.
package common

import (
	"crypto/rand"
	"encoding/base64"
	"unicode/utf8"
)

func StringLength(s *string) int {
	if s == nil {
		return -1
	}
	return utf8.RuneCountInString(*s)
}

// RandBase64 returns a string of random bytes encoded in raw base 64.
func RandBase64(size int) string {
	b := make([]byte, size)
	_, err := rand.Read(b)
	if err != nil {
		panic(err)
	}

	return base64.RawURLEncoding.EncodeToString(b)
}