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 32import re 33 34from webkitpy.common.checkout.diff_parser import DiffParser 35from webkitpy.common.system.executive import Executive 36from webkitpy.common.system.filesystem import FileSystem 37from webkitpy.common.checkout.scm.detection import SCMDetector 38 39 40_log = logging.getLogger(__name__) 41 42 43class PatchReader(object): 44 """Supports checking style in patches.""" 45 46 def __init__(self, text_file_reader): 47 """Create a PatchReader instance. 48 49 Args: 50 text_file_reader: A TextFileReader instance. 51 52 """ 53 self._text_file_reader = text_file_reader 54 55 def check(self, patch_string, fs=None): 56 """Check style in the given patch.""" 57 fs = fs or FileSystem() 58 patch_files = DiffParser(patch_string.splitlines()).files 59 60 # If the user uses git, checking subversion config file only once is enough. 61 call_only_once = True 62 63 for path, diff_file in patch_files.iteritems(): 64 line_numbers = diff_file.added_or_modified_line_numbers() 65 _log.debug('Found %s new or modified lines in: %s' % (len(line_numbers), path)) 66 67 if not line_numbers: 68 match = re.search("\s*png$", path) 69 if match and fs.exists(path): 70 if call_only_once: 71 self._text_file_reader.process_file(file_path=path, line_numbers=None) 72 cwd = FileSystem().getcwd() 73 detection = SCMDetector(fs, Executive()).detect_scm_system(cwd) 74 if detection.display_name() == "git": 75 call_only_once = False 76 continue 77 # Don't check files which contain only deleted lines 78 # as they can never add style errors. However, mark them as 79 # processed so that we count up number of such files. 80 self._text_file_reader.count_delete_only_file() 81 continue 82 83 self._text_file_reader.process_file(file_path=path, line_numbers=line_numbers) 84