import sys
import re
import os

try:
    from StringIO import StringIO
except ImportError:
    from io import StringIO

import flake8.engine


def make_putty_ignores(paths):
    style_guide = flake8.engine.get_style_guide()
    orig_stdout = sys.stdout
    sys.stdout = stdout = StringIO()
    try:
        style_guide.check_files(paths)
    finally:
        sys.stdout = orig_stdout

    files = {}
    stdout.seek(0)
    for line in stdout:
        filename, error = re.search('^([^:]*):\d+:\d+: (\S+)', line).groups()
        files.setdefault(os.path.normpath(filename), set()).add(error)

    for filename in sorted(files):
        print('{} : {}'.format(filename, ','.join(sorted(files[filename]))))


if __name__ == '__main__':
    make_putty_ignores(sys.argv[1:])