Tools/scripts/fixnotice.py

   1 #! /usr/bin/env python
   2
   3 """(Ostensibly) fix copyright notices in files.
   4
   5 Actually, this sript will simply replace a block of text in a file from one
   6 string to another.  It will only do this once though, i.e. not globally
   7 throughout the file.  It writes a backup file and then does an os.rename()
   8 dance for atomicity.
   9
  10 Usage: fixnotices.py [options] [filenames]
  11 Options:
  12     -h / --help
  13         Print this message and exit
  14
  15     --oldnotice=file
  16         Use the notice in the file as the old (to be replaced) string, instead
  17         of the hard coded value in the script.
  18
  19     --newnotice=file
  20         Use the notice in the file as the new (replacement) string, instead of
  21         the hard coded value in the script.
  22
  23     --dry-run
  24         Don't actually make the changes, but print out the list of files that
  25         would change.  When used with -v, a status will be printed for every
  26         file.
  27
  28     -v / --verbose
  29         Print a message for every file looked at, indicating whether the file
  30         is changed or not.
  31 """
  32
  33 OLD_NOTICE = """/***********************************************************
  34 Copyright (c) 2000, BeOpen.com.
  35 Copyright (c) 1995-2000, Corporation for National Research Initiatives.
  36 Copyright (c) 1990-1995, Stichting Mathematisch Centrum.
  37 All rights reserved.
  38
  39 See the file "Misc/COPYRIGHT" for information on usage and
  40 redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
  41 ******************************************************************/
  42 """
  43 import os
  44 import sys
  45 import getopt
  46
  47 NEW_NOTICE = ""
  48 DRYRUN = 0
  49 VERBOSE = 0
  50
  51
  52 def usage(code, msg=''):
  53     print __doc__ % globals()
  54     if msg:
  55         print msg
  56     sys.exit(code)
  57
  58
  59 def main():
  60     global DRYRUN, OLD_NOTICE, NEW_NOTICE, VERBOSE
  61     try:
  62         opts, args = getopt.getopt(sys.argv[1:], 'hv',
  63                                    ['help', 'oldnotice=', 'newnotice=',
  64                                     'dry-run', 'verbose'])
  65     except getopt.error, msg:
  66         usage(1, msg)
  67
  68     for opt, arg in opts:
  69         if opt in ('-h', '--help'):
  70             usage(0)
  71         elif opt in ('-v', '--verbose'):
  72             VERBOSE = 1
  73         elif opt == '--dry-run':
  74             DRYRUN = 1
  75         elif opt == '--oldnotice':
  76             fp = open(arg)
  77             OLD_NOTICE = fp.read()
  78             fp.close()
  79         elif opt == '--newnotice':
  80             fp = open(arg)
  81             NEW_NOTICE = fp.read()
  82             fp.close()
  83
  84     for arg in args:
  85         process(arg)
  86
  87
  88 def process(file):
  89     f = open(file)
  90     data = f.read()
  91     f.close()
  92     i = data.find(OLD_NOTICE)
  93     if i < 0:
  94         if VERBOSE:
  95             print 'no change:', file
  96         return
  97     elif DRYRUN or VERBOSE:
  98         print '   change:', file
  99     if DRYRUN:
 100         # Don't actually change the file
 101         return
 102     data = data[:i] + NEW_NOTICE + data[i+len(OLD_NOTICE):]
 103     new = file + ".new"
 104     backup = file + ".bak"
 105     f = open(new, "w")
 106     f.write(data)
 107     f.close()
 108     os.rename(file, backup)
 109     os.rename(new, file)
 110
 111
 112 if __name__ == '__main__':
 113     main()