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#!/usr/bin/env python
# Copyright (C) 2010 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.

"""deduplicate-tests -- print test results duplicated between platforms.

If platform/mac-leopard is missing an expected test output, we fall back on
platform/mac.  This means it's possible to grow redundant test outputs,
where we have the same expected data in both a platform directory and another
platform it falls back on.

This command dumps out all such files.  You can use it like this:
  deduplicate-tests --verbose  # print out the duplicated files
  deduplicate-tests | xargs git rm   # delete them
"""


import optparse
import webkitpy.common.system.logutils as logutils
import webkitpy.layout_tests.deduplicate_tests as deduplicate_tests


def parse_args():
    """Provides a default set of command line args.

    Returns a tuple of options, args from optparse"""

    configuration_options = [
        optparse.make_option("-v", "--verbose", dest="verbose",
                             action="store_true", default=False,
                             help="Verbose output."),
        optparse.make_option("-g", "--glob", dest="glob_pattern",
                             default="*-expected*",
                             help="Specify the glob to filter the files, defaults to *-expected*."),
    ]

    option_list = (configuration_options)
    option_parser = optparse.OptionParser(option_list=option_list)

    options, _ = option_parser.parse_args()

    return options


def run(options):
    logutils.configure_logging()
    if options.verbose:
        format = ("* %(test)s\n"
                  "\tredundantly on %(platform)s and %(fallback)s\n"
                  "\tconsider deleting %(path)s")
    else:
        format = "%(path)s"

    for dupe in deduplicate_tests.deduplicate(options.glob_pattern):
        print(format % dupe)


def main():
    options = parse_args()
    run(options)


if __name__ == '__main__':
    main()