#! /usr/bin/env python
# -*- encoding: utf-8 -*-
# Generate MP3 playlists for Zixia music site 
# Copyright (c) 2004-2007 Pan Yongzhi http://pan.cdut.cn/izixia
#
# izixia 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.
# 
# izixia 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 izixia; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

import os.path
import re
import sys

if len(sys.argv) != 2:
    print 'Usage: %s <lftp find output file>' % sys.argv[0]
    sys.exit()
# in lftp, use `find [dir] ... > all.lftp' to get this file
lftp_find_output = sys.argv[1]
# you may choose server = 'http://iris.trueice.net:8000/'
# or server = 'http://202.199.171.158:8000/ which is the ip
server = 'http://166.111.18.98:8000/'
pattern = re.compile('\.[mM][pP]3$')
fd_all = open(lftp_find_output, 'r')

line = fd_all.readline()
while line:
    # readlines appends \n to line end
    line = line.rstrip('\n')
    # if not mp3 file, skip it
    if not re.search(pattern, line):
        line = fd_all.readline()
        continue
    dir_long = os.path.split(line)[0]
    url = server + line
    url = url.replace(' ', '%20')
    # this assumes all.lftp is utf8 encoded
    url = url.decode('utf8').encode('gbk')
    if not os.path.exists(dir_long):
        os.makedirs(dir_long)
    single = re.sub(pattern, '.m3u', line)
    fd_single = open(single, 'w')
    # write magic bytes for m3u file
    fd_single.writelines('#EXTM3U\n')
    fd_single.writelines(url)
    fd_single.close()

    dirlist = dir_long.split('/')
    while dirlist:
        dirname = '/'.join(dirlist)
        m3ufile = re.sub(pattern, '.m3u', line)
        # an m3u file, which contains all the mp3s' urls
        # in this dir and its sub-dirs, for every dir
        m3ufile = os.path.join(dirname, dirlist[-1])
        m3ufile += '.m3u'
        if not os.path.exists(m3ufile):
            fd_part = open(m3ufile, 'w')
            fd_part.writelines('#EXTM3U\n')
            fd_part.close()
        fd_part = open(m3ufile, 'a')
        fd_part.writelines(url)
        fd_part.writelines('\n')
        fd_part.close()
        dirlist.pop()
    line = fd_all.readline()
fd_all.close()