#!/usr/bin/python
# Copyright (C) 2013 Apple Inc.  All rights reserved.
# Copyright (C) 2012 Google Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1.  Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
# 2.  Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

import optparse
import os
import subprocess
import sys


def main():
    parser = optparse.OptionParser("usage: %prog [options]")
    parser.add_option("--platform")
    parser.add_option("--build-directory")
    parser.add_option("--debug", action="store_const", const="debug", dest="configuration")
    parser.add_option("--release", action="store_const", const="release", dest="configuration")

    options, parameters = parser.parse_args()
    if not options.platform:
        parser.error("Platform is required")
        return -1
    if not options.configuration:
        parser.error("Configuration is required")
        return -2

    genericPlatform = options.platform.split('-', 1)[0]
    if genericPlatform != 'mac':
        print 'Exited without removing any files.'
        return 0

    if options.build_directory:
        buildDirectory = options.build_directory
    else:
        buildDirectory = webkitBuildDirectory(genericPlatform, options.configuration)

    exit_code = 0

    for root, _, files in os.walk(buildDirectory):
        for name in files:
            full_path = os.path.join(root, name)
            ext = os.path.splitext(full_path)[1]

            try:
                if ext not in ('.o', '.d') or os.path.getsize(full_path):
                    continue
            except OSError as exception:
                print exception
                continue

            try:
                os.remove(full_path)
                print 'Removed', full_path
            except OSError as exception:
                print exception
                exit_code += 1

    return exit_code


def webkitBuildDirectory(platform, configuration):
    return subprocess.Popen(['perl', os.path.join(os.path.dirname(__file__), "..", "Scripts", "webkit-build-directory"),
        "--" + platform, "--" + configuration, '--top-level'], stdout=subprocess.PIPE).communicate()[0].strip()


if __name__ == '__main__':
    sys.exit(main())