#!/usr/bin/python
# Copyright 2010  Lars Wirzenius
# 
# 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 3 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, see <http://www.gnu.org/licenses/>.


import os
import sys
import ttystatus


def file_usage(ts, pathname):
    st = os.lstat(pathname)
    ts['total'] += st.st_blocks * 512


def dir_usage(ts, pathname):
    for dirname, subdirs, basenames in os.walk(pathname):
        ts['dirname'] = dirname
        file_usage(ts, dirname)
        subdirs.sort()
        basenames.sort()
        for basename in basenames:
            file_usage(ts, os.path.join(dirname, basename))


def main():
    ts = ttystatus.TerminalStatus()
    ts.add(ttystatus.ElapsedTime())
    ts.add(ttystatus.Literal(' '))
    ts.add(ttystatus.ByteSize('total'))
    ts.add(ttystatus.Literal(' ('))
    ts.add(ttystatus.Counter('dirname'))
    ts.add(ttystatus.Literal(' dirs) '))
    ts.add(ttystatus.Pathname('dirname'))
    
    ts['total'] = 0

    for name in sys.argv[1:]:
        if os.path.isdir(name):
            dir_usage(ts, name)
        else:
            file_usage(ts, name)

    ts.finish()


if __name__ == '__main__':
    main()