4grab/4grab.py

#!/usr/bin/python

######################################################################
# 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 config
import download
import progressbar

def raw_input_with_default(default, prompt):
    inp = raw_input("%s (default=%s): " % (prompt, default))
    if inp == "":
        return default
    return inp

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

conf.set_optioncreator(raw_input_with_default)

def walk_with_wizard(baseurl):
    wzrd_msg = "Pilates! *SHAZAM* Here they come!"
    print "Alright, let me put on my robe and wizard hat."
    
    # Single or all
    inp = None
    prompt = "Would you like to download a single thread, or all? "
    inp = raw_input(prompt)
    while (inp != "single" and inp != "all"):
        print "Please type single or all"
        inp = raw_input(prompt)

    if inp == "single":
        inp = raw_input("Which thread would you like to download? ")
        if inp[:7] == "http://":
            t = downloader.get_image_links("", [inp])
        else:
            thread = inp
            inp = raw_input("Which category is this thread in? ")
            print wzrd_msg
            t = downloader.get_image_links("%s%s/res/" % (baseurl, inp),
                                           [thread])
    else:
        inp = raw_input("Which category would you like to download? ")
        conf.set_category(inp)
        baseurl = "%s%s/" % (baseurl, conf.get_category())

        print wzrd_msg
        t = downloader.get_thread_links(baseurl)
        t = downloader.get_image_links(baseurl, t)
    (skipped, failed, downloaded, total) = downloader.get_images(t)
    print "Downloaded: ", downloaded
    print "Skipped:    ", skipped
    print "Failed:     ", failed
    print "Total:      ", total

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("-w",
                  "--wizard",
                  action="store_true",
                  dest="wizard",
                  help="I'll put on my robe and wizard hat and help you "
                  "get some of those pictures you like")
(options, args) = parser.parse_args()

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

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.wizard:
    try:
        walk_with_wizard(base_url)
    except KeyboardInterrupt:
        print
        print "Alright, no more wizard hat and robe then. Goodbye"
    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_category(options.tempcat)

base_url = "%s%s/" % (base_url, conf.get_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:
    print
    print "So you don't want these images? Fine! I'll stop then."