#!/usr/bin/python
# Transfoms Compact into your compiler
# @author Joao Vieira <vieira@yubo.be>

import sys, os, string, itertools, fileinput

if len(sys.argv) < 3:
  print >> sys.stderr, "usage: rename <path> <newname>"
  sys.exit(1)
if not os.path.isdir(sys.argv[1]):
  print >> sys.stderr, "oops,", sys.argv[1], "is not a directory."
  sys.exit(2)

for root, dirs, files in os.walk(sys.argv[1]):
  for path in itertools.chain(files, dirs):
    old, new = os.path.join(root, path), os.path.join(root, path.replace('Compact', sys.argv[2]))
    if not os.path.exists(new):
      os.rename(old, new)
    if os.path.isfile(new):
      for line in fileinput.input(new, inplace = 1):
        #TODO(vieira@yubo.be): Avoid triplication of variables.
        """ this is ugly but regular expressions are slow, so we will avoid them."""
        COMPACT, Compact, compact = 0, 0, 0
        COMPACT, Compact, compact = string.find(line, "COMPACT"), string.find(line, "Compact"), string.find(line, "compact")
        if COMPACT >= 0:
          line = line.replace("COMPACT", sys.argv[2].upper())
        if Compact >= 0:
          line = line.replace("Compact", sys.argv[2])
        if compact >= 0:
          line = line.replace("compact", sys.argv[2].lower())
        sys.stdout.write(line)