CC-Tweaked/tools/check-lines.py

import pathlib, sys

problems = False

# Skip images and files without extensions
exclude = [ "*.png", "**/data/json-parsing/*.json" ]

for path in pathlib.Path("src").glob("**/*"):
    if path.is_dir() or path.suffix == "" or any(path.match(x) for x in exclude):
        continue

    with path.open(encoding="utf-8") as file:
        has_dos, has_trailing, needs_final = False, False, False
        for i, line in enumerate(file):
            if len(line) >= 2 and line[-2] == "\r" and line[-1] == "\n" and not has_line:
                print("%s has contains '\\r\\n' on line %d" % (path, i + 1))
                problems = has_dos = True

            if len(line) >= 2 and line[-2] in " \t" and line[-1] == "\n" and not has_trailing:
                print("%s has trailing whitespace on line %d" % (path, i + 1))
                problems = has_trailing = True

        if line is not None and len(line) >= 1 and line[-1] != "\n":
            print("%s should end with '\\n'" % path)
            problems = True

if problems:
    sys.exit(1)