count_groups.py

#!/usr/bin/env python
# -*- coding: latin-1 -*-

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.

import optparse
import sys
import os
import itertools

def main(options, args):
    for element in args:
        element = os.path.abspath(element)
        if os.path.isdir(element):
            start_count(os.listdir(element), options.reverse)
        elif os.path.isfile(element):
            with open(element, 'r') as rellist:
                start_count(rellist, options.reverse)
        else:
            print("WTF are you supplying me?")

def start_count(rellist, reverse):
    cleaned = map(lambda x:  (x.split('-'))[-1], rellist)
    grouped = {}

    for (key, elemiter) in itertools.groupby(sorted(cleaned)):
        grouped[key] = sum(1 for _ in elemiter)

    # print the results
    for key in sorted(grouped, key=grouped.__getitem__, reverse=reverse):
        print("%3d;%s" % (grouped[key], key))

if __name__ == '__main__':
    parser = optparse.OptionParser(
        usage="Usage: %prog [files]'\n"
        "This tool will group groups and list a count based on directories"
        "or a list of releasenames in a text file.\n",
        version="%prog 0.1 (2012-03-22)") # --help, --version

    parser.add_option("-r", "--reverse", help="reversed output",
                      action="store_true", dest="reverse", default=False)

    # no arguments given
    if len(sys.argv) < 2:
        print(parser.format_help())
    else:
        (options, args) = parser.parse_args()
        main(options, args)