apg-go/grouping.go

28 lines
839 B
Go
Raw Permalink Normal View History

// SPDX-FileCopyrightText: 2021-2024 Winni Neessen <wn@neessen.dev>
//
// SPDX-License-Identifier: MIT
package apg
import "unicode"
// GroupCharsForMobile takes a given string of characters and groups them in a mobile-friendly
// manner. The grouping is based on the following precedense: uppercase, lowercase, numbers
// and special characters. The grouped string is then returned.
func GroupCharsForMobile(chars string) string {
var uppers, lowers, numbers, others []rune
for _, char := range chars {
switch {
case unicode.IsUpper(char):
uppers = append(uppers, char)
case unicode.IsLower(char):
lowers = append(lowers, char)
case unicode.IsNumber(char):
numbers = append(numbers, char)
default:
others = append(others, char)
}
}
return string(uppers) + string(lowers) + string(numbers) + string(others)
}