diff -r 000000000000 -r 4f2f89ce4247 WebKitTools/Scripts/webkitpy/style_references.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKitTools/Scripts/webkitpy/style_references.py	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,72 @@
+# 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)
+