#!/usr/bin/python
# -*- coding: utf-8 -*-

import os, re, sys

def usage():
    print '''Usage: %s dir
Find strange encoding in file names.
All filenames should be in utf8 and in a characters given in the script.
''' % (os.path.basename(sys.argv[0]))

def main():
    if len(sys.argv)!=2:
        usage()
        sys.exit(3)
    start_dir=sys.argv[1]
    ok=0
    for root, dirs, files in os.walk(start_dir):
        dirs.sort()
        for fn in sorted(files):
            uni_fn=fn.decode('utf8').lower()
            if re.match(ur'''^[@{}~%=üöäßéèêàâáóña-z0-9_ ():.,!?´'"`\[\]&#-]+$''', uni_fn):
                ok+=1
                continue
            print 'strange: %s' % os.path.join(root, fn)
    print 'OK: %s' % ok
if __name__=='__main__':
    main()