Prune a bunch of webkitpy.

sky/tools/webkitpy/style/patchreader.py

-# Copyright (C) 2010 Google Inc. All rights reserved.
-# Copyright (C) 2010 Chris Jerdonek (chris.jerdonek@gmail.com)
-# Copyright (C) 2010 ProFUSION embedded systems
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * 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.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
-# OWNER OR 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 logging
-import re
-
-from webkitpy.common.checkout.diff_parser import DiffParser
-from webkitpy.common.system.executive import Executive
-from webkitpy.common.system.filesystem import FileSystem
-from webkitpy.common.checkout.scm.detection import SCMDetector
-
-
-_log = logging.getLogger(__name__)
-
-
-class PatchReader(object):
-    """Supports checking style in patches."""
-
-    def __init__(self, text_file_reader):
-        """Create a PatchReader instance.
-
-        Args:
-          text_file_reader: A TextFileReader instance.
-
-        """
-        self._text_file_reader = text_file_reader
-
-    def check(self, patch_string, fs=None):
-        """Check style in the given patch."""
-        fs = fs or FileSystem()
-        patch_files = DiffParser(patch_string.splitlines()).files
-
-        # If the user uses git, checking subversion config file only once is enough.
-        call_only_once = True
-
-        for path, diff_file in patch_files.iteritems():
-            line_numbers = diff_file.added_or_modified_line_numbers()
-            _log.debug('Found %s new or modified lines in: %s' % (len(line_numbers), path))
-
-            if not line_numbers:
-                match = re.search("\s*png$", path)
-                if match and fs.exists(path):
-                    if call_only_once:
-                        self._text_file_reader.process_file(file_path=path, line_numbers=None)
-                        cwd = FileSystem().getcwd()
-                        detection = SCMDetector(fs, Executive()).detect_scm_system(cwd)
-                        if detection.display_name() == "git":
-                            call_only_once = False
-                    continue
-                # Don't check files which contain only deleted lines
-                # as they can never add style errors. However, mark them as
-                # processed so that we count up number of such files.
-                self._text_file_reader.count_delete_only_file()
-                continue
-
-            self._text_file_reader.process_file(file_path=path, line_numbers=line_numbers)