1# Copyright (C) 2011, Google Inc. All rights reserved. 2# 3# Redistribution and use in source and binary forms, with or without 4# modification, are permitted provided that the following conditions are 5# met: 6# 7# * Redistributions of source code must retain the above copyright 8# notice, this list of conditions and the following disclaimer. 9# * Redistributions in binary form must reproduce the above 10# copyright notice, this list of conditions and the following disclaimer 11# in the documentation and/or other materials provided with the 12# distribution. 13# * Neither the name of Google Inc. nor the names of its 14# contributors may be used to endorse or promote products derived from 15# this software without specific prior written permission. 16# 17# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28# 29# WebKit's Python module for parsing and modifying ChangeLog files 30 31import codecs 32import fileinput 33import os.path 34import re 35import textwrap 36 37 38class DEPS(object): 39 40 _variable_regexp = r"\s+'%s':\s+'(?P<value>\d+)'" 41 42 def __init__(self, path): 43 self._path = path 44 45 def read_variable(self, name): 46 pattern = re.compile(self._variable_regexp % name) 47 for line in fileinput.FileInput(self._path): 48 match = pattern.match(line) 49 if match: 50 return int(match.group("value")) 51 52 def write_variable(self, name, value): 53 pattern = re.compile(self._variable_regexp % name) 54 replacement_line = " '%s': '%s'" % (name, value) 55 # inplace=1 creates a backup file and re-directs stdout to the file 56 for line in fileinput.FileInput(self._path, inplace=1): 57 if pattern.match(line): 58 print replacement_line 59 continue 60 # Trailing comma suppresses printing newline 61 print line, 62