Tools/scripts/untabify.py

   1 #! /usr/bin/env python
   2
   3 "Replace tabs with spaces in argument files.  Print names of changed files."
   4
   5 import os
   6 import sys
   7 import getopt
   8
   9 def main():
  10     tabsize = 8
  11     try:
  12         opts, args = getopt.getopt(sys.argv[1:], "t:")
  13         if not args:
  14             raise getopt.error, "At least one file argument required"
  15     except getopt.error, msg:
  16         print msg
  17         print "usage:", sys.argv[0], "[-t tabwidth] file ..."
  18         return
  19     for optname, optvalue in opts:
  20         if optname == '-t':
  21             tabsize = int(optvalue)
  22
  23     for filename in args:
  24         process(filename, tabsize)
  25
  26 def process(filename, tabsize):
  27     try:
  28         f = open(filename)
  29         text = f.read()
  30         f.close()
  31     except IOError, msg:
  32         print "%r: I/O error: %s" % (filename, msg)
  33         return
  34     newtext = text.expandtabs(tabsize)
  35     if newtext == text:
  36         return
  37     backup = filename + "~"
  38     try:
  39         os.unlink(backup)
  40     except os.error:
  41         pass
  42     try:
  43         os.rename(filename, backup)
  44     except os.error:
  45         pass
  46     f = open(filename, "w")
  47     f.write(newtext)
  48     f.close()
  49     print filename
  50
  51 if __name__ == '__main__':
  52     main()