libdot/bin/readlink

#!/usr/bin/env python3
# Copyright 2018 The ChromiumOS Authors
# 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.
"""

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:]))