#!/usr/bin/python
# Clean out files which look to have been generated by antlr
# Author: Colin Walters <walters@verbum.org>
# This file is hereby placed into the public domain.

import os,sys,re

_antlr_compiled_re = re.compile(r'// \$ANTLR.*:.*->.*\$$')

def clean_antlr_generated(basedir):
  for (dpath,subdirs,fnames) in os.walk(basedir):
    for fname in fnames:
      fpath = os.path.join(dpath, fname)
      f = open(fpath)
      first = f.readline()
      f.close()
      if _antlr_compiled_re.match(first):
        print "Deleting antlr-compiled %s" % (fpath,)
        os.unlink(fpath)

if __name__ == '__main__':
  basedir = sys.argv[1]
  clean_antlr_generated(basedir)