4grab/4grab.py

#!/usr/bin/python2

######################################################################
# Copyright 2009, 2010 ryuslash
#
# This file is part of 4grab.
#
# 4grab 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.
#
# 4grab 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 4grab.  If not, see <http://www.gnu.org/licenses/>.
######################################################################

import optparse
import sys
import os

import config
from util import raw_input_with_default
import util

import download
import progressbar
import sorter
import backend

config._optioncreator = raw_input_with_default

base_url = "http://boards.4chan.org/"
parser = optparse.OptionParser()
downloader = download.Downloader(progressbar.Progress)

def parse_commands():
    conf = config.Configuration()
    parser.set_usage(
        """%prog [options]

4grab Copyright (C) 2009-2010 ryuslash
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.""")
    parser.add_option("-e",
                      nargs=2,
                      dest="confval",
                      metavar="CONF VALUE",
                      help="Set configuration option CONF to be VALUE")
    parser.add_option("-c",
                      "--category",
                      dest="tempcat",
                      metavar="CATEGORY",
                      help="Set the category to CATEGORY only for this run")
    parser.add_option("-t",
                      "--thread",
                      dest="thread",
                      metavar="THREAD",
                      help="Download only THREAD. If THREAD is only an ID, "
                      "CATEGORY must also be set. Otherwise, no problem :-)")
    parser.add_option("-s",
                      "--sort",
                      action="store_true",
                      dest="sort",
                      help="Sort downloaded images, most handy if you've used "
                      "older versions which didn't sort yet")
    parser.add_option("-l",
                      "--loglevel",
                      nargs=1,
                      dest="loglevel",
                      metavar="LEVEL",
                      help="Changes the default log level to LEVEL")
    (options, args) = parser.parse_args()

    if options.confval and (options.tempcat
                            or options.thread
                            or options.wizard
                            or options.sort):
        print "Can't configure something and do something else too."
        exit(1)

    if options.sort:
        sort = sorter.Sorter()
        for item in os.listdir(conf.get_download_location()):
            sort.act(item)
        exit(0)

    if options.confval:
        if not conf.option_exists(options.confval[0]):
            print ("%s: error: %s is not a valid configuration option"
                   % (sys.argv[0], options.confval[0]))
            exit(1)
        print "Setting", options.confval[0], "to", options.confval[1]
        conf.set_option(options.confval[0],
                        options.confval[1])
        conf.save()
        exit(0)

    elif options.thread:
        try:
            if options.thread[:7] == "http://":
                t = downloader.get_image_links("", [options.thread])
            elif options.tempcat:
                url = "%s%s/res/" % (base_url, options.tempcat)
                t = downloader.get_image_links(url, [options.thread])
            else:
                print ("if THREAD is not an absolute URL, "
                       "CATEGORY must also be specified")
                exit(1)
            (skipped, failed, downloaded, total) = downloader.get_images(t)
            print "Downloaded: ", downloaded
            print "Skipped:    ", skipped
            print "Failed:     ", failed
            print "Total:      ", total
        except KeyboardInterrupt:
            print
            print "Goodbye"
        exit(0)

    elif options.tempcat:
        conf.set_categories([options.tempcat])

    elif options.loglevel is not None:
        util.loglevel = util.LogType.from_int(options.loglevel)

if __name__ == "__main__":
    conf = config.Configuration()
    sort = sorter.Sorter()
    parse_commands()

    downloader.set_on_downloaded(sort.act)
    for category in conf.get_categories():
        base_url = "%s%s/" % (base_url, category)
        try:
            t = downloader.get_thread_links(base_url)
            t = downloader.get_image_links(base_url, t)
            (skipped, failed, downloaded, total) = downloader.get_images(t)
            print "Downloaded: ", downloaded
            print "Skipped:    ", skipped
            print "Failed:     ", failed
            print "Total:      ", total
        except KeyboardInterrupt:
            be = backend.Backend()
            be.save(True) # Make sure that the downloaded images are saved anyway

            print
            print "So you don't want these images? Fine! I'll stop then."
            util.log(util.LogType.Err, "Quit on user request")