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, verbose=True): 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 with open(filename, "w") as f: 47 f.write(newtext) 48 if verbose: 49 print filename 50 51 if __name__ == '__main__': 52 main() 53
