Quick and dirty Fluent (FTL) checker

ftl-checker.py

#!/usr/bin/env python3

"""
ftl-checker.py - Quick and dirty Fluent (FTL) checker.

DEPENDENCIES:

    pip install fluent-compiler

USAGE:

    ./ftl-checker.py [message.ftl [message2.ftl [...]]]

LICENSE:

    Copyright © 2025 Fabien LOISON <https://blog.flozz.fr>
    This work is free. You can redistribute it and/or modify it under the
    terms of the Do What The Fuck You Want To Public License, Version 2,
    as published by Sam Hocevar. See http://www.wtfpl.net/ for more details.
"""

import sys

from fluent_compiler.compiler import compile_messages
from fluent_compiler.resource import FtlResource


def check_ftl_file(filename):
    compiled = compile_messages("en", [FtlResource.from_file(filename)])
    for _, error in compiled.errors:
        print(error.message)
    return bool(compiled.errors)


def main(args=sys.argv[1:]):
    if not args:
        print(__doc__)
        sys.exit(1)
    has_errors = False
    for filename in args:
        has_errors |= check_ftl_file(filename)
    if has_errors:
        sys.exit(2)


if __name__ == "__main__":
    main()