1# Copyright (C) 2010 Google Inc. All rights reserved. 2# Copyright (C) 2010 Chris Jerdonek (chris.jerdonek@gmail.com) 3# Copyright (C) 2010 ProFUSION embedded systems 4# 5# Redistribution and use in source and binary forms, with or without 6# modification, are permitted provided that the following conditions are 7# met: 8# 9# * Redistributions of source code must retain the above copyright 10# notice, this list of conditions and the following disclaimer. 11# * Redistributions in binary form must reproduce the above 12# copyright notice, this list of conditions and the following disclaimer 13# in the documentation and/or other materials provided with the 14# distribution. 15# * Neither the name of Google Inc. nor the names of its 16# contributors may be used to endorse or promote products derived from 17# this software without specific prior written permission. 18# 19# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 31import logging 32 33from webkitpy.common.checkout.diff_parser import DiffParser 34 35 36_log = logging.getLogger("webkitpy.style.patchreader") 37 38 39class PatchReader(object): 40 """Supports checking style in patches.""" 41 42 def __init__(self, text_file_reader): 43 """Create a PatchReader instance. 44 45 Args: 46 text_file_reader: A TextFileReader instance. 47 48 """ 49 self._text_file_reader = text_file_reader 50 51 def check(self, patch_string): 52 """Check style in the given patch.""" 53 patch_files = DiffParser(patch_string.splitlines()).files 54 55 for path, diff_file in patch_files.iteritems(): 56 line_numbers = diff_file.added_or_modified_line_numbers() 57 _log.debug('Found %s new or modified lines in: %s' % (len(line_numbers), path)) 58 59 if not line_numbers: 60 # Don't check files which contain only deleted lines 61 # as they can never add style errors. However, mark them as 62 # processed so that we count up number of such files. 63 self._text_file_reader.count_delete_only_file() 64 continue 65 66 self._text_file_reader.process_file(file_path=path, line_numbers=line_numbers) 67