def main():
    load_pseudonyms()

    if len(sys.argv) > 1:
        for fn in sys.argv[1:]:
            filter_file(fn)
    else:
        dirList = os.listdir(os.path.dirname(sys.argv[0]))
        for fname in dirList:
            split = os.path.splitext(fname)
            if (split[1].lower() == '.csv' and split[0].upper()[:5] != 'ANON_'
                    and split[0] != 'pseudonyms'):
                filter_file(fname)

    save_pseudonyms()