libdot/bin/readlink

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright 2018 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""An alternate implementation of readlink that supports the non-standard -f.

Note that this implementation of -f implies -m, but that shouldn't matter as
readlink isn't used to find missing directories, only canonicalize paths.
"""

from __future__ import print_function

import os
import sys

import libdot


def get_parser():
    """Get a command line parser."""
    parser = libdot.ArgumentParser(description=__doc__)
    parser.add_argument('-f', '--canonicalize', action='store_true',
                        help='Canonicalize the paths.')
    parser.add_argument('paths', nargs='+',
                        help='Paths to process.')
    return parser


def main(argv):
    """The main func!"""
    parser = get_parser()
    opts = parser.parse_args(argv)
    for path in opts.paths:
        print(os.path.realpath(path))


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