codekingpro/portable-devtools

1import re2 3import pyparsing4 5# TODO: There is a lot of work to be done here.6# The current implementation is written in a way that _any_ input is valid,7# which does not make sense once things get more complex.8 9PartialQuotedString = pyparsing.Regex(10    re.compile(11        r"""12            "[^"]*(?:"|$)  # double-quoted string that ends with double quote or EOF13            |14            '[^']*(?:'|$)  # single-quoted string that ends with double quote or EOF15        """,16        re.VERBOSE,17    )18)19 20expr = pyparsing.ZeroOrMore(21    PartialQuotedString22    | pyparsing.Word(" \r\n\t")23    | pyparsing.CharsNotIn("""'" \r\n\t""")24).leaveWhitespace()25 26 27def quote(val: str) -> str:28    if val and all(char not in val for char in "'\" \r\n\t"):29        return val30    if '"' not in val:31        return f'"{val}"'32    if "'" not in val:33        return f"'{val}'"34    return '"' + val.replace('"', r"\x22") + '"'35 36 37def unquote(x: str) -> str:38    if len(x) > 1 and x[0] in "'\"" and x[0] == x[-1]:39        return x[1:-1]40    else:41        return x42