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#
# Demo RSS client using tracker as backend
# Copyright (C) 2009 Nokia <ivan.frade@nokia.com>
#
# 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
# of the License, 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., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
#
import dbus
import os
TRACKER = 'org.freedesktop.Tracker3'
TRACKER_OBJ = '/org/freedesktop/Tracker3/Resources'
FALSE = "false"
TRUE = "true"
QUERY_FIRST_ENTRIES = """
SELECT ?entry ?title ?date ?isRead WHERE {
?entry a mfo:FeedMessage ;
nie:title ?title ;
nie:contentLastModified ?date .
OPTIONAL {
?entry nmo:isRead ?isRead.
}
} ORDER BY DESC(?date) LIMIT %s
"""
SET_URI_AS_READED = """
DELETE {<%s> nmo:isRead "%s".}
INSERT {<%s> nmo:isRead "%s".}
"""
QUERY_ALL_SUBSCRIBED_FEEDS ="""
SELECT ?feeduri ?title COUNT (?entries) AS e WHERE {
?feeduri a mfo:FeedChannel ;
nie:title ?title.
?entries a mfo:FeedMessage ;
nmo:communicationChannel ?feeduri.
} GROUP BY ?feeduri
"""
QUERY_FOR_URI = """
SELECT ?title ?date ?isRead ?channel WHERE {
<%s> a mfo:FeedMessage ;
nie:title ?title ;
nie:contentLastModified ?date ;
nmo:communicationChannel ?channel .
OPTIONAL {
<%s> nmo:isRead ?isRead.
}
}
"""
QUERY_FOR_TEXT = """
SELECT ?text WHERE {
<%s> nie:plainTextContent ?text .
}
"""
CONF_FILE = os.path.expanduser ("~/.config/rss_tracker/rss.conf")
class TrackerRSS:
def __init__ (self):
bus = dbus.SessionBus ()
self.tracker = bus.get_object (TRACKER, TRACKER_OBJ)
self.iface = dbus.Interface (self.tracker,
"org.freedesktop.Tracker3.Resources")
self.invisible_feeds = []
self.load_config ()
def load_config (self):
if (os.path.exists (CONF_FILE)):
print "Loading %s" % (CONF_FILE)
for line in open (CONF_FILE):
line = line.replace ('\n','')
if (len (line) > 0):
self.invisible_feeds.append (line)
print "Hiding feeds from:", self.invisible_feeds
else:
if (not os.path.exists (os.path.dirname (CONF_FILE))):
os.makedirs (os.path.dirname (CONF_FILE))
f = open (CONF_FILE, 'w')
f.close ()
def get_post_sorted_by_date (self, amount):
results = self.iface.SparqlQuery (QUERY_FIRST_ENTRIES % (amount))
return results
def set_is_read (self, uri, value):
if (value):
dbus_value = TRUE
anti_value = FALSE
else:
dbus_value = FALSE
anti_value = TRUE
print "Sending ", SET_URI_AS_READED % (uri, anti_value, uri, dbus_value)
self.iface.SparqlUpdate (SET_URI_AS_READED % (uri, anti_value, uri, dbus_value))
def get_all_subscribed_feeds (self):
""" Returns [(uri, feed channel name, entries, visible)]
"""
componed = []
results = self.iface.SparqlQuery (QUERY_ALL_SUBSCRIBED_FEEDS)
for result in results:
print "Looking for", result[0]
if (result[0] in self.invisible_feeds):
visible = False
else:
visible = True
componed.insert (0, result + [visible])
componed.reverse ()
return componed
def get_info_for_entry (self, uri):
""" Returns (?title ?date ?isRead)
"""
details = self.iface.SparqlQuery (QUERY_FOR_URI % (uri, uri))
if (len (details) < 1):
print "No details !??!!"
return None
if (len (details) > 1):
print "OMG what are you asking for?!?!?!"
return None
info = details [0]
if (info[3] in self.invisible_feeds):
print "That feed is not visible"
return None
else:
if (info[2] == TRUE):
return (info[0], info[1], True)
else:
return (info[0], info[1], False)
def get_text_for_uri (self, uri):
text = self.iface.SparqlQuery (QUERY_FOR_TEXT % (uri))
if (text[0]):
text = text[0][0].replace ("\\n", "\n")
else:
text = ""
return text
def mark_as_invisible (self, uri):
self.invisible_feeds.append (uri)
def mark_as_visible (self, uri):
self.invisible_feeds.remove (uri)
def flush_to_file (self):
f = open (CONF_FILE, 'w')
for line in self.invisible_feeds:
f.write (line + "\n")
f.close ()
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