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 31 import codecs 32 import fileinput 33 import os.path 34 import re 35 import textwrap 36 37 38 class 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
