/*
* Create a decimal number of given length to be used as an identifier.
* @param size int - desired length of identifier
* @return string - generated number string
*/
func CreateId(size int) string {
id := string('1' + crypto.RandInt(0, 8))
for len(id) < size {
id += string('0' + crypto.RandInt(0, 9))
}
return id
}
/*
* Create a key of given length to be used as an identifier.
* The character set is [a-zA-Z0-9]
* @param size int - desired length of key
* @return string - generated number string
*/
func CreateKey(size int) string {
id := ""
for len(id) < size {
v := crypto.RandInt(0, 61)
if v < 26 {
id += string('a' + v)
} else if v < 52 {
id += string('A' + v - 26)
} else {
id += string('0' + v - 52)
}
}
return id
}
/*
* Get next (random) image from repository
* @return *ImageRef - reference to (random) image
*/
func GetNextImage() *ImageRef {
return imgList[crypto.RandInt(0, len(imgList)-1)]
}