ConlangInputMethod.py

import re

def IMString(string: str) -> str:
    
    out = string
    
    def DiacriticChar(charpair: str) -> str:
        match charpair.group()[1]:
            case "q":
                match charpair.group()[0]:
                    case "a":
                        return "â"
                    case "A":
                        return "Â"
                    case "o":
                        return "ô"
                    case "O":
                        return "Ô"
                    case "u":
                        return "û"
                    case "U":
                        return "Û"
                    case "\\":
                        return "q"
            case "x":
                match charpair.group()[0]:
                    case "c":
                        return "ć"
                    case "C":
                        return "Ć"
                    case "d":
                        return "đ"
                    case "D":
                        return "Đ"
                    case "o":
                        return "ö"
                    case "O":
                        return "Ö"
                    case "s":
                        return "ś"
                    case "S":
                        return "Ś"
                    case "u":
                        return "ü"
                    case "U":
                        return "Ü"
                    case "\\":
                        return "x"
            case "Q":
                match charpair.group()[0]:
                    case "A":
                        return "Â"
                    case "O":
                        return "Ô"
                    case "U":
                        return "Û"
                    case "\\":
                        return "Q"
            case "X":
                match charpair.group()[0]:
                    case "C":
                        return "Ć"
                    case "D":
                        return "Đ"
                    case "O":
                        return "Ö"
                    case "S":
                        return "Ś"
                    case "U":
                        return "Ü"
                    case "\\":
                        return "X"
            case "n":
                if charpair.group()[0] == "\\":
                    return "\n"
            case "b":
                if charpair.group()[0] == "\\":
                    return "\\"
    
    out = re.sub("[AOUaou\\\\][Qq]|[CDOUScdous\\\\][Xx]", DiacriticChar, string)
    return out