config/buildlist.py

   1 # ***** BEGIN LICENSE BLOCK *****
   2 # Version: MPL 1.1/GPL 2.0/LGPL 2.1
   3 #
   4 # The contents of this file are subject to the Mozilla Public License Version
   5 # 1.1 (the "License"); you may not use this file except in compliance with
   6 # the License. You may obtain a copy of the License at
   7 # http://www.mozilla.org/MPL/
   8 #
   9 # Software distributed under the License is distributed on an "AS IS" basis,
  10 # WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  11 # for the specific language governing rights and limitations under the
  12 # License.
  13 #
  14 # The Original Code is Mozilla build system.
  15 #
  16 # The Initial Developer of the Original Code is
  17 # Mozilla Foundation.
  18 # Portions created by the Initial Developer are Copyright (C) 2009
  19 # the Initial Developer. All Rights Reserved.
  20 #
  21 # Contributor(s):
  22 #  Ted Mielczarek <ted.mielczarek@gmail.com>
  23 #
  24 # Alternatively, the contents of this file may be used under the terms of
  25 # either the GNU General Public License Version 2 or later (the "GPL"), or
  26 # the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27 # in which case the provisions of the GPL or the LGPL are applicable instead
  28 # of those above. If you wish to allow use of your version of this file only
  29 # under the terms of either the GPL or the LGPL, and not to allow others to
  30 # use your version of this file under the terms of the MPL, indicate your
  31 # decision by deleting the provisiwons above and replace them with the notice
  32 # and other provisions required by the GPL or the LGPL. If you do not delete
  33 # the provisions above, a recipient may use your version of this file under
  34 # the terms of any one of the MPL, the GPL or the LGPL.
  35 #
  36 # ***** END LICENSE BLOCK *****
  37
  38 '''A generic script to add entries to a file
  39 if the entry does not already exist.
  40
  41 Usage: buildlist.py <filename> <entry> [<entry> ...]
  42 '''
  43
  44 import sys
  45 import os
  46 from utils import lockFile
  47
  48 def addEntriesToListFile(listFile, entries):
  49   """Given a file |listFile| containing one entry per line,
  50   add each entry in |entries| to the file, unless it is already
  51   present."""
  52   lock = lockFile(listFile + ".lck")
  53   try:
  54     if os.path.exists(listFile):
  55       f = open(listFile)
  56       existing = set([x.strip() for x in f.readlines()])
  57       f.close()
  58     else:
  59       existing = set()
  60     f = open(listFile, 'a')
  61     for e in entries:
  62       if e not in existing:
  63         f.write("%s\n" % e)
  64         existing.add(e)
  65     f.close()
  66   finally:
  67     lock = None
  68
  69 if __name__ == '__main__':
  70   if len(sys.argv) < 3:
  71     print >>sys.stderr, "Usage: buildlist.py <list file> <entry> [<entry> ...]"
  72     sys.exit(1)
  73   addEntriesToListFile(sys.argv[1], sys.argv[2:])