g15pidgin.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
 
"""
Copyright (C) 2008 Julian Knauer <jpk@goatpr0n.de>
"
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, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  
"
Maintainer:         Julian Knauer <jpk@goatpr0n.de>
URL:		    http://wiki.goatpr0n.de/code/python/g15pidgin
Version:	    2008-04-16
"""
 
import os, sys
import dbus, gobject, Queue
from dbus.mainloop.glib import DBusGMainLoop
 
 
# --- Setup starts here ---
use_encoding = 'latin-1' # for Umlauts
use_fifopath = os.environ.get('HOME')+'/.g15fifo-'+os.environ.get('LOGNAME')
# --- Setup ends here -----
 
 
def strip_ml_tags(in_text):
    """Description: Removes all HTML/XML-like tags from the input text.
    Inputs: s --> string of text
    Outputs: text string without the tags
 
    # doctest unit testing framework
 
    >>> test_text = "Keep this Text <remove><me /> KEEP </remove> 123"
    >>> strip_ml_tags(test_text)
    'Keep this Text  KEEP  123'
    """
    # convert in_text to a mutable object (e.g. list)
    s_list = list(in_text)
    i,j = 0,0
 
    while i < len(s_list):
        # iterate until a left-angle bracket is found
        if s_list[i] == '<':
            while s_list[i] != '>':
                # pop everything from the the left-angle bracket until the right-angle bracket
                s_list.pop(i)
                # pops the right-angle bracket, too
            s_list.pop(i)
        elif s_list[i] == '&': # suggested by Ronny Bremer through comment on goatpr0n.de
            while s_list[i] != ';':
                s_list.pop(i)
            s_list.pop(i)
        else:
            i += 1
 
    # convert the list back into text
    join_char=''
    return join_char.join(s_list)
 
 
def dispatch_message_cb(account, sender, message, conversation, flags):
    global messages, purple
 
    buddy = purple.PurpleFindBuddy(account, sender)
    alias = purple.PurpleBuddyGetAlias(buddy)
    name = purple.PurpleBuddyGetName(buddy)
    text = strip_ml_tags(message).replace('"', '\'\'')
    msg = '"%s (%s)" "> %s"' % (alias, name, text)
    messages.append(msg)
    if len(messages) > 3:
        messages.popleft()
 
    buffer = ''
    for i in range(len(messages)):
        buffer = buffer + messages[i]
        display_message(buffer)
 
 
def display_message(data):
    global use_encoding, use_fifopath
 
    try:
        fifo = os.open(use_fifopath, os.O_WRONLY)
        if fifo:
            msg = 'TS ' + data + '\n'
            os.write(fifo, msg.encode(use_encoding))
            os.close(fifo)
    except IOError, err:
        print >>sys.stderr, 'Failed opening FIFO.'
 
 
if __name__ == '__main__':
    print 'Launching G15 IM Message Delivery-Service...'
 
    messages = Queue.deque()
 
    dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
    bus = dbus.SessionBus()
    obj = bus.get_object("im.pidgin.purple.PurpleService", "/im/pidgin/purple/PurpleObject")
    purple = dbus.Interface(obj, "im.pidgin.purple.PurpleInterface")
    bus.add_signal_receiver(dispatch_message_cb,
            dbus_interface='im.pidgin.purple.PurpleInterface',
            signal_name='ReceivedImMsg')
 
    loop = gobject.MainLoop()
    loop.run()
 
# vim:ts=4:sw=4:et:enc=utf-8: