#!/bin/sh
# Copyright (c) 2013 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
# option. Note that this implemetnation of -f implies -m, but that shouldn't
# matter as readlink isn't used to find missing directories, only canonicize
# paths.


if [ "$1" = "-f" ]; then
  if [ "$2" = "--" ]; then
    shift
  fi
  if [ $# -ne 2 ]; then
    echo "Usage: readlink -f [--] <path>" >&2
    exit 1
  fi
  exec python -c 'import os,sys;print os.path.realpath(sys.argv[1])' "$2"
else
  if [ -x /bin/readlink ]; then
    exec /bin/readlink "$@"
  else
    exec /usr/bin/readlink "$@"
  fi
fi