So again, fixes.

I fixed one bug[1] regarding escaping and quoting in the handlers. As
quoting and escaping is pretty central to the whole matter of opening
something - can someone test emails (and what ever you can find ;o)).

Thanks, Marcus

[1] https://bugs.launchpad.net/ubuntu/+source/tracker/+bug/130889
# -*- coding: utf-8 -*-
#    This handler was originaly created by Mikkel Kamstrup (c) 2006 and updated by Eugenio Cutolo (eulin)
#
#    This program can be distributed under the terms of the GNU GPL version 2 or later.
#    See the file COPYING.
#

# Notes on URL escaping and quoting:
#  * Fields displayed in the deskbar applet should be escaped
#  * There _MUST_ be an unescaped 'uri' field in order to open it
#    (see also 'escqped_uri' - this URI however should urllib quoted
#                 - Marcus Fritzsch, [EMAIL PROTECTED], 2007-08-13

import re
import cgi
import sys
import os.path
import time
import urllib
import gnome
import gobject

from gettext import gettext as _

import deskbar, deskbar.Utils, deskbar.gnomedesktop
import deskbar.Handler
import deskbar.Match

# For now description param it's not used
TYPES = {
	'Applications': {
		'description': (_('Launch %s (%s)') % ('<b>%(name)s</b>', '%(app_name)s')),
		'category': 'actions',
		#'icon': 'stock_run',
	},

	'GaimConversations': {
		'description': (_('See %s conversation\n%s %s\nfrom %s') % ('<b>%(proto)s</b>', '%(channel)s', '<b>%(conv_to)s</b>', '<i>%(time)s</i>')),
		'category': 'conversations',
		'icon': 'stock_people',
	},

	'Emails': {
		'description': (_('Email from %s') % '<i>%(publisher)s</i>' ) + '\n<b>%(title)s</b>',
		'category': 'emails',
		'action': 'evolution %(uri)s',
		'icon': 'stock_mail',
	},

	'Music': {
		'description': _('Listen to music %s\nin %s')	% ('<b>%(base)s</b>', '<i>%(dir)s</i>'),
		'category': 'music',
		#'icon': 'audio',
	},

	'Documents': {
		'description': _('See document %s\nin %s')	% ('<b>%(base)s</b>', '<i>%(dir)s</i>'),
		'category': 'documents',
		#'icon': 'file',
	},

	'Development': {
		'description': _('Open file %s\nin %s')	% ('<b>%(base)s</b>', '<i>%(dir)s</i>'),
		'category': 'develop',
		#'icon': 'file',
	},

	'Images': {
		'description': _('View image %s\nin %s')	% ('<b>%(base)s</b>', '<i>%(dir)s</i>'),
		'category': 'images',
		'icon': 'image',
	},

	'Videos': {
		'description': _('Watch video  %s\nin %s')	% ('<b>%(base)s</b>', '<i>%(dir)s</i>'),
		'category': 'videos',
		'icon': 'video',
	},

	'Files': {
		'description': _('Open file %s\nin %s')	% ('<b>%(base)s</b>', '<i>%(dir)s</i>'),
		'category': 'files',
		#'icon': 'file',
	},

	'Folders': {
		'description': _('Open folder %s\n%s') % ('<b>%(name)s</b>', '<i>%(dir)s/%(name)s</i>'),
		'category': 'places',
		'icon': 'stock_folder',
	},

	'Extra': {
		'description': _('Search for %s with Tracker Search Tool') % ('<b>%(name)s</b>'),
	},
}




class TrackerSearchToolMatch (deskbar.Match.Match):

	def __init__(self, backend, **args):
		deskbar.Match.Match.__init__(self, backend, **args)
		self._icon = deskbar.Utils.load_icon ('tracker')

	def action(self, text=None):
		gobject.spawn_async(['tracker-search-tool', self.name], flags=gobject.SPAWN_SEARCH_PATH)

	def get_verb(self):
		return TYPES['Extra']['description'] % { 'name': self.name }

	def get_category (self):
		return 'actions'

	def get_hash (self, text=None):
		return 'tst-more-hits-action-'+self.name




class TrackerSearchToolHandler(deskbar.Handler.Handler):

	def __init__(self):
		deskbar.Handler.Handler.__init__(self, 'tracker')

	def query(self, query):
		return [TrackerSearchToolMatch(self, name=query)]

	@staticmethod
	def requirements ():
		if deskbar.Utils.is_program_in_path ('tracker-search-tool'):
			return (deskbar.Handler.HANDLER_IS_HAPPY, None, None)
		return (deskbar.Handler.HANDLER_IS_NOT_APPLICABLE, 'tracker-search-tool not found', None)




class TrackerLiveSearchMatch (deskbar.Match.Match):

	def __init__(self, handler,result=None, **args):
		deskbar.Match.Match.__init__ (self, handler,name=result['name'], **args)
		self.result = result
		self.init_names(result['escaped_uri'])

		# Set the match icon
		try:
			self._icon = deskbar.Utils.load_icon(TYPES[result['type']]['icon'])
		except:
			if self.result.has_key ('icon'):
				self._icon = deskbar.Utils.load_icon_for_desktop_icon (result ['icon'])
			else:
				self._icon = deskbar.Utils.load_icon_for_file(result['uri'])

	def get_name(self, text=None):
		return self.result

	def get_verb(self):
		try:
			return TYPES[self.result['type']]['description']
		except:
			return _('Open file %s\nin %s')	% ('<b>%(base)s</b>', '<i>%(dir)s</i>')

	def get_hash(self, text=None):
		if self.result ['type'] == 'Applications':
			# return a name that matches the one returned by the Program handler of deskbar
			return 'generic_' + self.result ['app_basename']
		return self.result['uri']

	def action(self, text=None):
		if TYPES[self.result['type']].has_key('action'):
			cmd = TYPES[self.result['type']]['action']
			cmd = map(lambda arg : arg % self.result, cmd.split()) # we need this to handle spaces correctly

			print 'Opening Tracker hit with command:', cmd
			try:
				# deskbar >= 2.17
				deskbar.Utils.spawn_async(cmd)
			except AttributeError:
				# deskbar <= 2.16
				gobject.spawn_async(args, flags=gobject.SPAWN_SEARCH_PATH)
		else:
			if self.result.has_key ('desktop'):
				self.result['desktop'].launch([])
			else:
				try: # catch errors on gnome.url_show()
					try:
						# deskbar >= 2.17
						deskbar.Utils.url_show ('file://'+self.result['uri'])
					except AttributeError:
						gnome.url_show('file://'+self.result['uri'])
					print 'Opening Tracker hit:', self.result['uri']
				except:
					print >> sys.stderr, '*** Could not open URL %s: %s' % (self.result['uri'], sys.exc_info ()[1])

	def get_category (self):
		try:
			return TYPES[self.result['type']]['category']
		except:
			return 'files'

	def init_names (self, fullpath):
		dirname, filename = os.path.split(fullpath)
		if filename == '': #We had a trailing slash
			dirname, filename = os.path.split(dirname)

		#Reverse-tilde-expansion
		home = os.path.normpath(os.path.expanduser('~'))
		regexp = re.compile(r'^%s(/|$)' % re.escape(home))
		dirname = re.sub(regexp, r'~\1', dirname)

		self.result['base'] = filename
		self.result['dir'] = dirname




class TrackerLiveSearchHandler(deskbar.Handler.SignallingHandler):

	def __init__(self):
		deskbar.Handler.SignallingHandler.__init__(self, 'tracker')
		# initing on search request, see self.query
		self.tracker = self.search_iface = self.keywords_iface = self.files_iface = None
		self.set_delay (500)
		self.conv_re = re.compile (r'^.*?/logs/([^/]+)/([^/]+)/([^/]+)/(.+?)\.(:?txt|html)$') # all, proto, account, to-whom, time
		self.have_tst = deskbar.Utils.is_program_in_path ('tracker-search-tool')

	def handle_email_hits (self, info, output):
		output['title'] = cgi.escape(info[3])
		output['publisher'] = cgi.escape(info[4])

	def handle_conversation_hits (self, info, output):
		m = self.conv_re.match (output['escaped_uri'])
		output['channel']=_('with')
		output['proto']=output['conv_from']=output['conv_to']=output['time']='' # XXX, never happened during tests
		if m:
			output['proto'] = cgi.escape (m.group (1))
			output['conv_from'] = urllib.unquote (cgi.escape (m.group (2)))
			output['conv_to'] = urllib.unquote (cgi.escape (m.group (3)))
			output['time'] = cgi.escape (time_from_purple_log (m.group (4)))
		if output['conv_to'].endswith ('.chat'):
			output['channel'] = _('in channel')
			output['conv_to'] = output['conv_to'].replace ('.chat','')
		if output['proto'] == 'irc':
			nick_server = output['conv_from'].split ('@')
			if len (nick_server) > 1:
				output['conv_to'] = '%s on %s' % (output['conv_to'], nick_server[1])

	def handle_application_hits (self, info, output):
		# print info
		#   dbus.Array(
		#   [
		#     dbus.String(u'/usr/share/applications/gksu.desktop'), # TrackerUri  0
		#     dbus.String(u'Applications'),                         # TrackerType 1
		#     dbus.String(u'Application'),                          # DesktopType 2
		#     dbus.String(u'Root Terminal'),                        # DesktopName 3
		#     dbus.String(u'gksu /usr/bin/x-terminal-emulator'),    # DesktopExec 4
		#     dbus.String(u'gksu-root-terminal')                    # DesktopIcon 5
		#   ],
		#   signature=dbus.Signature('s'))
		# Strip %U or whatever arguments in Exec field
		output['app_name'] = re.sub(r'%\w+', '', info [4]).strip ()
		output['app_basename'] = cgi.escape (os.path.basename (output['app_name']))
		output['app_name'] = cgi.escape (output['app_name'])
		if output['app_basename'] == '': # strange // in app_name, e.g. nautilus burn:///
			output['app_basename'] = output['app_name']
		output['name'] = cgi.escape (info [3])
		output['icon'] = info [5] # no escaping, as it is not displayed as a string

		desktop = parse_desktop_file (output['uri'])
		if not desktop:
			print >> sys.stderr, '*** Could not read .desktop file: %s' % info[0]
		else:
			output['desktop'] = desktop

	def receive_hits (self, qstring, hits, max):
		matches = []

		for info in hits:
			output = {}

			info = [str (i) for i in info]

			output['escaped_uri'] = cgi.escape (info[0])
			output['uri'] = urllib.quote (info[0])
			output['name'] = os.path.basename(output['escaped_uri'])
			output['type'] = info[1]

			if not TYPES.has_key(output['type']):
				output['type'] = 'Files'

			if output['type'] == 'Emails':
				self.handle_email_hits (info, output)

			elif output['type'] in ('GaimConversations', 'Conversations'):
				self.handle_conversation_hits (info, output)

			elif output['type'] == 'Applications':
				self.handle_application_hits (info, output)

			# applications are launched by .desktop file, if not readable: exclude
			if output['type'] != 'Applications' or output.has_key ('desktop'):
				matches.append(TrackerLiveSearchMatch (self, output))

		if len (matches):
			self.emit_query_ready(qstring, matches)
			print 'Tracker response for query "%s" (service %s); %s hits returned, %s shown' % (qstring, hits[0][1], len(hits), len(matches))

	def recieve_error (self, error):
		print >> sys.stderr, '*** Tracker dbus error:', error

	def query (self, qstring, max):
		if not self.tracker:
			try:
				import dbus
				bus = dbus.SessionBus()
				self.tracker = bus.get_object('org.freedesktop.Tracker','/org/freedesktop/tracker')
				self.search_iface = dbus.Interface(self.tracker, 'org.freedesktop.Tracker.Search')
				self.keywords_iface = dbus.Interface(self.tracker, 'org.freedesktop.Tracker.Keywords')
				self.files_iface = dbus.Interface(self.tracker, 'org.freedesktop.Tracker.Files')
			except:
				print >> sys.stderr, '*** DBus connection to tracker failed, check your settings.'
				return
		for service in [key for key in TYPES.iterkeys () if key != 'Extra']:
			self.search_iface.TextDetailed (-1, service, qstring, 0, max, \
					reply_handler = lambda hits: self.receive_hits (qstring, hits, max), \
					error_handler = self.recieve_error)
		print 'Tracker query:', qstring
		if self.have_tst:
			# explicitly add one hit to search with t-s-t
			self.emit_query_ready (qstring, [TrackerSearchToolMatch (self, name=qstring)])

	@staticmethod
	def requirements ():
		try:
			import dbus
			try :
				if getattr(dbus, 'version', (0,0,0)) >= (0,41,0):
					import dbus.glib

				# Check that Tracker can be started via dbus activation, we will have trouble if it's not
				bus = dbus.SessionBus()
				proxy_obj = bus.get_object('org.freedesktop.DBus', '/org/freedesktop/DBus')
				dbus_iface = dbus.Interface(proxy_obj, 'org.freedesktop.DBus')
				activatables = dbus_iface.ListActivatableNames()
				if not 'org.freedesktop.Tracker' in activatables:
					return (deskbar.Handler.HANDLER_IS_NOT_APPLICABLE, 'Tracker is not activatable via dbus', None)
			except:
				return (deskbar.Handler.HANDLER_IS_NOT_APPLICABLE, 'Python dbus.glib bindings not found.', None)
			return (deskbar.Handler.HANDLER_IS_HAPPY, None, None)
		except:
			return (deskbar.Handler.HANDLER_IS_NOT_APPLICABLE, 'Python dbus bindings not found.', None)




# this code is stolen from the programs handler of deskbar
def parse_desktop_file(desktop, only_if_visible=False):
	try:
		desktop = deskbar.gnomedesktop.item_new_from_file(desktop, deskbar.gnomedesktop.LOAD_ONLY_IF_EXISTS)
	except Exception, e:
		print 'Couldn\'t read desktop file:%s:%s' % (desktop, e)
		return None
	if desktop == None or desktop.get_entry_type() != deskbar.gnomedesktop.TYPE_APPLICATION:
		return None
	if only_if_visible and desktop.get_boolean(deskbar.gnomedesktop.KEY_NO_DISPLAY):
		return None
	return desktop




def time_from_purple_log (instr):
	try:
		if instr.find ('+') != -1: # new kind of log timestamp...
			return time.strftime ('%c', time.strptime (re.sub (r'\+\d{4}', '', instr), '%Y-%m-%d.%H%M%S%Z'))
		else: # ...from ancient times
			return time.strftime ('%c', time.strptime (instr, '%Y-%m-%d.%H%M%S'))
	except:
		print >> sys.stderr, '*** time parsing for purple chat log failed: %s' % sys.exc_info ()[1]
	return instr




HANDLERS = {
	'TrackerSearchToolHandler': {
		'name': 'Search for files using Tracker Search Tool',
		'description': _('Search all of your documents with Tracker Search Tool'),
		#'requirements': TrackerSearchToolHandler.requirements, # XXX makes deskbar 2.18.1 not load the handler!!
	},

	'TrackerLiveSearchHandler': {
		'name': 'Search for files using Tracker',
		'description': _('Search all of your documents, <b>as you type</b>'),
		'requirements': TrackerLiveSearchHandler.requirements,
		'categories': {
			'develop': {
				'name': _('Development Files'),
			},
			'music': {
				'name': _('Music'),
			},
			'images': {
				'name': _('Images'),
			},
			'videos': {
				'name': _('Videos'),
			},
			'conversations': {
				'name': _('Conversations'),
			},
			'applications': {
				'name': _('Applications'),
			},
			'places': {
				'name': _('Places'),
			},
			'actions': {
				'name': _('Actions'),
			},
		},
	},
}
import gnome
import gobject
import re
import sys
import urllib
import time
import cgi
import os.path
import deskbar
import deskbar.core.Utils
import deskbar.core.gnomedesktop
import deskbar.interfaces.Module
import deskbar.interfaces.Match
import deskbar.interfaces.Action
from deskbar.core.Utils import is_program_in_path, spawn_async
from deskbar.handlers.actions.OpenWithApplicationAction import \
		OpenWithApplicationAction
from deskbar.handlers.actions.OpenDesktopFileAction import \
		OpenDesktopFileAction
from deskbar.handlers.actions.ShowUrlAction import \
		ShowUrlAction
from gettext import gettext as _


MAX_RESULTS = 10
HANDLERS = ['TrackerSearchToolHandler', 'TrackerLiveSearchHandler']


class TrackerSearchToolMatch (deskbar.interfaces.Match):

	def __init__(self, **kwargs):
		deskbar.interfaces.Match.__init__(self, **kwargs)
		self.add_action (TrackerSearchToolAction (self.get_name ()))

	def get_hash (self, text=None):
		return 'tst-more-hits-action-'+self.get_name ()

	def get_category (self):
		return 'actions'




class TrackerSearchToolAction (deskbar.interfaces.Action):
	def __init__(self, name):
		deskbar.interfaces.Action.__init__ (self, name)
		self.name = name

	def activate(self, text=None):
		gobject.spawn_async(['tracker-search-tool', self.name], \
				flags=gobject.SPAWN_SEARCH_PATH)

	def get_verb(self):
		return _('Search for %s with Tracker Search Tool') % '<b>%(name)s</b>'

	def get_hash (self):
		return 't-s-t:'+self.name




class TrackerSearchToolHandler(deskbar.interfaces.Module):
	INFOS = {
			'icon': deskbar.core.Utils.load_icon ('tracker'),
			'name': _('Tracker Search'),
			'description': _('Search with Tracker Search Tool'),
	}

	def __init__(self):
		deskbar.interfaces.Module.__init__(self)

	def query(self, query):
		self._emit_query_ready (query, [TrackerSearchToolMatch(name=query, priority=self.get_priority ())])

	@staticmethod
	def has_requirements ():
		return is_program_in_path ('tracker-search-tool')




#For now description param it's not used
TYPES = {
	'Applications': {
		'description': (_('Launch %s (%s)') % ('<b>%(name)s</b>', '%(app_name)s') ),
		'category': 'actions',
	},

	'GaimConversations': {
		'description': (_('See %s conversation\n%s %s\nfrom %s') % ('<b>%(proto)s</b>', '%(channel)s', '<b>%(conv_to)s</b>', '<i>%(time)s</i>')),
		'category': 'conversations',
	},

	'Emails': {
		'description': (_('Email from %s') % '<i>%(publisher)s</i>' ) + '\n<b>%(title)s</b>',
		'category': 'emails',
		'action' : 'evolution %(uri)s',
	},

	'Music': {
		'description': _('Listen to music %s\nin %s')	% ('<b>%(base)s</b>', '<i>%(dir)s</i>'),
		'category': 'music',
		#'icon': 'audio-x-generic',
	},

	'Documents': {
		'description': _('See document %s\nin %s')	% ('<b>%(base)s</b>', '<i>%(dir)s</i>'),
		'category': 'documents',
	},

	'Development': {
		'description': _('Open file %s\nin %s')	% ('<b>%(base)s</b>', '<i>%(dir)s</i>'),
		'category': 'develop',
	},

	'Images': {
		'description': _('View image %s\nin %s')	% ('<b>%(base)s</b>', '<i>%(dir)s</i>'),
		'category': 'images',
		'icon': 'image',
	},

	'Videos': {
		'description': _('Watch video  %s\nin %s')	% ('<b>%(base)s</b>', '<i>%(dir)s</i>'),
		'category': 'videos',
		#'icon': 'video-x-generic',
	},

	'Folders': {
		'description': _('Open folder %s\n%s') % ('<b>%(name)s</b>', '<i>%(dir)s/%(name)s</i>'),
		'category': 'places',
	},

	'Files': {
		'description': _('Open file %s\nin %s')	% ('<b>%(base)s</b>', '<i>%(dir)s</i>'),
		'category': 'files',
	},

	'Extra': {
		'description': _('Search for %s with Tracker Search Tool') % ('<b>%(name)s</b>'),
	},
}




class TrackerLiveSearchMatch (deskbar.interfaces.Match):

	def __init__(self, result, **args):
		deskbar.interfaces.Match.__init__ (self)
		self.result = result
		try:
			desktop = result['desktop']
			del result['desktop']
		except:
			desktop = None

		# Set the match icon
		try:
			self._pixbuf = deskbar.core.Utils.load_icon(TYPES[result['type']]['icon'])
		except:
			if self.result.has_key ('icon'):
				self._pixbuf = deskbar.core.Utils.load_icon_for_desktop_icon (result ['icon'])
			else:
				if self.result['type'] != 'Conversations':
					try:
						self._pixbuf = deskbar.core.Utils.load_icon ('file://'+result['uri'])
					except:
						pass # some icons cannot be loaded... (e.g. for non existent file or illegal URI)

		self.add_action (TrackerLiveSearchAction (result, desktop))
		#if result['type'] == 'Images':
		#	for prg in ('gimp', 'gthumb', 'gwenview'):
		#		if is_program_in_path (prg):
		#			self.add_action (OpenWithApplicationAction (result['name'], prg, [result['uri']]))

	def get_name (self, text = None):
		return self.result ['name']

	def get_verb(self):
		try:
			return TYPES[self.result['type']]['description']
		except:
			return _('Open file %s\nin %s')	% ('<b>%(base)s</b>', '<i>%(dir)s</i>')

	def get_hash(self, text=None):
		return self.result['uri']

	def get_category (self):
		try:
			return TYPES[self.result['type']]['category']
		except:
			return 'files'




class TrackerLiveSearchAction (deskbar.interfaces.Action):

	def __init__ (self, result, desktop):
		deskbar.interfaces.Action (self)
		self.name = result['name']
		self.desktop = desktop
		self.result = result
		self.init_names (result['unquoted_uri'])

	def get_name(self, text=None):
		return self.result

	def get_hash(self, text=None):
		if self.result ['type'] == 'Applications':
			# return a name that matches the one returned by the Program handler of deskbar
			return 'generic_' + self.result ['app_basename']
		return self.result['uri']

	def get_verb(self):
		try:
			return TYPES[self.result['type']]['description']
		except:
			return _('Open file %s\nin %s')	% ('<b>%(base)s</b>', '<i>%(dir)s</i>')

	def activate (self, text=None):
		if TYPES[self.result['type']].has_key('action'):
			cmd = TYPES[self.result['type']]['action']
			cmd = map(lambda arg : arg % self.result, cmd.split()) # we need this to handle spaces correctly

			print 'Opening Tracker hit with command:', cmd
			deskbar.core.Utils.spawn_async(cmd)
		else:
			if self.desktop:
				self.desktop.launch ([])
			else:
				deskbar.core.Utils.url_show ('file://'+urllib.quote (self.result['uri']))
			print 'Opening Tracker hit:', urllib.quote (self.result['uri'])

	def init_names (self, fullpath):
		dirname, filename = os.path.split(fullpath)
		if filename == '': #We had a trailing slash
			dirname, filename = os.path.split(dirname)

		#Reverse-tilde-expansion
		home = os.path.normpath(os.path.expanduser('~'))
		regexp = re.compile(r'^%s(/|$)' % re.escape(home))
		dirname = re.sub(regexp, r'~\1', dirname)

		self.result ['base'] = filename
		self.result ['dir'] = dirname




class TrackerLiveSearchHandler(deskbar.interfaces.Module):

	INFOS = {
			'icon': deskbar.core.Utils.load_icon ('tracker'),
			'name': _('Tracker Live Search'),
			'description': _('Search with Tracker, as you type'),
			'categories': {
			'develop': {
				'name': _('Development Files'),
			},
			'music': {
				'name': _('Music'),
			},
			'images': {
				'name': _('Images'),
			},
			'videos': {
				'name': _('Videos'),
			},
			'folders': {
				'name': _('Folders'),
			},
		},
	}

	@staticmethod
	def has_prerequisites ():
		try:
			import dbus
			try :
				if getattr(dbus, 'version', (0,0,0)) >= (0,41,0):
					import dbus.glib

				# Check that Tracker can be started via dbus activation, we will have trouble if it's not
				bus = dbus.SessionBus()
				proxy_obj = bus.get_object('org.freedesktop.DBus', '/org/freedesktop/DBus')
				dbus_iface = dbus.Interface(proxy_obj, 'org.freedesktop.DBus')
				activatables = dbus_iface.ListActivatableNames()
				if not 'org.freedesktop.Tracker' in activatables:
					TrackerLiveSearchHandler.INSTRUCTIONS = ('Tracker is not activatable via dbus')
					return False
			except:
				TrackerLiveSearchHandler.INSTRUCTIONS = ('Python dbus.glib bindings not found.')
				return False
			return True
		except:
			TrackerLiveSearchHandler.INSTRUCTIONS = ('Python dbus bindings not found.')
			return False

	def __init__(self):
		deskbar.interfaces.Module.__init__(self)
		# initing on search request, see self.query
		self.tracker = self.search_iface = self.keywords_iface = self.files_iface = None
		self.conv_re = re.compile (r'^.*?/logs/([^/]+)/([^/]+)/([^/]+)/(.+?)\.(:?txt|html)$') # all, proto, account, to-whom, time
		self.have_tst = is_program_in_path ('tracker-search-tool')

	def handle_email_hits (self, info, output):
		output['title'] = info[3]
		output['publisher'] = info[4]

	def handle_conversation_hits (self, info, output):
		output ['uri'] = info [0]
		m = self.conv_re.match (output['uri'])
		output['channel']=_('with')
		output['proto']=output['conv_from']=output['conv_to']=output['time']='' # XXX, never happened during tests
		if m:
			output['proto'] = m.group (1)
			output['conv_from'] = urllib.unquote (m.group (2))
			output['conv_to'] = urllib.unquote (m.group (3))
			output['time'] = time_from_purple_log (m.group (4))
		if output['conv_to'].endswith ('.chat'):
			output['channel'] = _('in channel')
			output['conv_to'] = output['conv_to'].replace ('.chat','')
		if output['proto'] == 'irc':
			nick_server = output['conv_from'].split ('@')
			if len (nick_server) > 1:
				output['conv_to'] = '%s on %s' % (output['conv_to'], nick_server[1])

	def handle_application_hits (self, info, output):
		# print info
		#   dbus.Array(
		#   [
		#     dbus.String(u'/usr/share/applications/gksu.desktop'), # TrackerUri  0
		#     dbus.String(u'Applications'),                         # TrackerType 1
		#     dbus.String(u'Application'),                          # DesktopType 2
		#     dbus.String(u'Root Terminal'),                        # DesktopName 3
		#     dbus.String(u'gksu /usr/bin/x-terminal-emulator'),    # DesktopExec 4
		#     dbus.String(u'gksu-root-terminal')                    # DesktopIcon 5
		#   ],
		#   signature=dbus.Signature('s'))
		# Strip %U or whatever arguments in Exec field
		output['app_name'] = re.sub(r'%\w+', '', info [4]).strip ()
		output['app_basename'] = os.path.basename (output['app_name'])
		output['app_name'] = output['app_name']
		if output['app_basename'] == '': # strange // in app_name, e.g. nautilus burn:///
			output['app_basename'] = output['app_name']
		output['name'] = info [3]
		output['icon'] = info [5]
		desktop = parse_desktop_file (output['uri'])
		if desktop:
			output['desktop'] = desktop

	def recieve_hits (self, qstring, hits, max):
		matches = []

		for info in hits:
			output = {}

			info = [str (i) for i in info]

			output['unquoted_uri'] = output['uri'] = info[0]
			output['name'] = os.path.basename(output['unquoted_uri'])
			output['type'] = info[1]

			if not TYPES.has_key(output['type']):
				output['type'] = 'Files'

			if output['type'] == 'Emails':
				self.handle_email_hits (info, output)

			elif output['type'] in ('GaimConversations', 'Conversations'):
				self.handle_conversation_hits (info, output)

			elif output['type'] == 'Applications':
				self.handle_application_hits (info, output)

			# applications are launched by .desktop file, if not readable: exclude
			if output['type'] != 'Applications' or output.has_key ('desktop'):
				matches.append(TrackerLiveSearchMatch (output))

		if len (matches):
			self._emit_query_ready (qstring, matches)
			print 'Tracker response for %s; %d hits returned, %d shown' % \
					(qstring, len(hits), len(matches))

	def recieve_error (self, error):
		print >> sys.stderr, '*** Tracker dbus error:', error

	def query (self, qstring):
		max = MAX_RESULTS

		if not self.tracker:
			try:
				import dbus
				bus = dbus.SessionBus()
				self.tracker = bus.get_object('org.freedesktop.Tracker', '/org/freedesktop/tracker')
				self.search_iface = dbus.Interface(self.tracker, 'org.freedesktop.Tracker.Search')
				self.keywords_iface = dbus.Interface(self.tracker, 'org.freedesktop.Tracker.Keywords')
				self.files_iface = dbus.Interface(self.tracker, 'org.freedesktop.Tracker.Files')
			except:
				print >> sys.stderr, 'DBus connection to tracker failed, check your settings.'
				return
		for service in [key for key in TYPES.iterkeys () if key != 'Extra']:
			print 'Searching %s' % service
			self.search_iface.TextDetailed (-1, service, qstring, 0, max, \
					reply_handler = lambda hits: self.recieve_hits(qstring, hits, max),
					error_handler = self.recieve_error)
		print 'Tracker query:', qstring
		if self.have_tst:
			self._emit_query_ready (qstring, [TrackerSearchToolMatch (name=qstring, priority=self.get_priority ())])




# this code is stolen from the programs handler of deskbar
def parse_desktop_file(desktop, only_if_visible=False):
	try:
		desktop = deskbar.core.gnomedesktop.item_new_from_file(desktop, deskbar.core.gnomedesktop.LOAD_ONLY_IF_EXISTS)
	except Exception, e:
		print 'Couldn\'t read desktop file:%s:%s' % (desktop, e)
		return None
	if desktop == None or desktop.get_entry_type() != deskbar.core.gnomedesktop.TYPE_APPLICATION:
		return None
	if only_if_visible and desktop.get_boolean(deskbar.core.gnomedesktop.KEY_NO_DISPLAY):
		return None
	return desktop

def time_from_purple_log (instr):
	try:
		if instr.find ('+') != -1: # new kind of log timestamp...
			return time.strftime ('%c', time.strptime (re.sub (r'\+\d{4}', '', instr), '%Y-%m-%d.%H%M%S%Z'))
		else: # ...from ancient times
			return time.strftime ('%c', time.strptime (instr, '%Y-%m-%d.%H%M%S'))
	except:
		print >> sys.stderr, '*** time parsing for purple chat log failed: %s' % sys.exc_info ()[1]
	return instr
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