# Copyright (C) 2010 Chris Jerdonek (cjerdonek@webkit.org)

#

# 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 INC. 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 INC. 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.

"""References to non-style modules used by the style package."""

# This module is a simple facade to the functionality used by the

# style package that comes from WebKit modules outside the style

# package.

#

# With this module, the only intra-package references (i.e.

# references to webkitpy modules outside the style folder) that

# the style package needs to make are relative references to

# this module. For example--

#

# > from .. style_references import parse_patch

#

# Similarly, people maintaining non-style code are not beholden

# to the contents of the style package when refactoring or

# otherwise changing non-style code. They only have to be aware

# of this module.

import os

from webkitpy.common.checkout.diff_parser import DiffParser

from webkitpy.common.system.logtesting import LogTesting

from webkitpy.common.system.logtesting import TestLogStream

from webkitpy.common.system.logutils import configure_logging

from webkitpy.common.checkout.scm import detect_scm_system

from webkitpy.thirdparty.autoinstalled import pep8

def detect_checkout():

    """Return a WebKitCheckout instance, or None if it cannot be found."""

    cwd = os.path.abspath(os.curdir)

    scm = detect_scm_system(cwd)

    return None if scm is None else WebKitCheckout(scm)

class WebKitCheckout(object):

    """Simple facade to the SCM class for use by style package."""

    def __init__(self, scm):

        self._scm = scm

    def root_path(self):

        """Return the checkout root as an absolute path."""

        return self._scm.checkout_root

    def create_patch(self, git_commit):

        return self._scm.create_patch(git_commit)