comparison: finch/libgnt/pygnt/example/rss/gntrss.py
finch/libgnt/pygnt/example/rss/gntrss.py
- changeset 19175
- d6cea4e8560f
- child 19176
- 487103c2e783
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| 19174:fdbcb1c0c449 | 19175:d6cea4e8560f |
|---|---|
| 1 #!/usr/bin/env python | |
| 2 | |
| 3 # A very simple and stupid RSS reader | |
| 4 # | |
| 5 # Uses the Universal Feed Parser | |
| 6 # | |
| 7 | |
| 8 import threading | |
| 9 import feedparser | |
| 10 import gobject | |
| 11 import sys | |
| 12 import time | |
| 13 | |
| 14 ## | |
| 15 # The FeedItem class. It will update emit 'delete' signal when it's | |
| 16 # destroyed. | |
| 17 ## | |
| 18 class FeedItem(gobject.GObject): | |
| 19 __gproperties__ = { | |
| 20 'unread' : (gobject.TYPE_BOOLEAN, 'read', | |
| 21 'The unread state of the item.', | |
| 22 False, gobject.PARAM_READWRITE) | |
| 23 } | |
| 24 __gsignals__ = { | |
| 25 'delete' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, (gobject.TYPE_OBJECT,)) | |
| 26 } | |
| 27 def __init__(self, item, parent): | |
| 28 self.__gobject_init__() | |
| 29 self.date = item['date'] | |
| 30 self.date_parsed = item['date_parsed'] | |
| 31 self.title = item['title'] | |
| 32 self.summary = item['summary'] | |
| 33 self.link = item['link'] | |
| 34 self.parent = parent | |
| 35 self.unread = True | |
| 36 | |
| 37 def remove(self): | |
| 38 self.emit('delete', self.parent) | |
| 39 | |
| 40 def do_set_property(self, property, value): | |
| 41 if property.name == 'unread': | |
| 42 self.unread = value | |
| 43 | |
| 44 gobject.type_register(FeedItem) | |
| 45 | |
| 46 def item_hash(item): | |
| 47 return str(item['date'] + item['title']) | |
| 48 | |
| 49 ## | |
| 50 # The Feed class. It will update the 'link', 'title', 'desc' and 'items' | |
| 51 # attributes if/when they are updated (triggering 'notify::<attr>' signal) | |
| 52 ## | |
| 53 class Feed(gobject.GObject): | |
| 54 __gproperties__ = { | |
| 55 'link' : (gobject.TYPE_STRING, 'link', | |
| 56 'The web page this feed is associated with.', | |
| 57 '...', gobject.PARAM_READWRITE), | |
| 58 'title' : (gobject.TYPE_STRING, 'title', | |
| 59 'The title of the feed.', | |
| 60 '...', gobject.PARAM_READWRITE), | |
| 61 'desc' : (gobject.TYPE_STRING, 'description', | |
| 62 'The description for the feed.', | |
| 63 '...', gobject.PARAM_READWRITE), | |
| 64 'items' : (gobject.TYPE_POINTER, 'items', | |
| 65 'The items in the feed.', gobject.PARAM_READWRITE), | |
| 66 'unread' : (gobject.TYPE_INT, 'unread', | |
| 67 'Number of unread items in the feed.', 0, 10000, 0, gobject.PARAM_READWRITE) | |
| 68 } | |
| 69 __gsignals__ = { | |
| 70 'added' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, (gobject.TYPE_OBJECT,)) | |
| 71 } | |
| 72 | |
| 73 def __init__(self, url): | |
| 74 self.__gobject_init__() | |
| 75 self.url = url # The url of the feed itself | |
| 76 self.link = url # The web page associated with the feed | |
| 77 self.desc = url | |
| 78 self.title = url | |
| 79 self.unread = 0 | |
| 80 self.timer = 0 | |
| 81 self.items = [] | |
| 82 self.hash = {} | |
| 83 | |
| 84 def do_set_property(self, property, value): | |
| 85 if property.name == 'link': | |
| 86 self.link = value | |
| 87 elif property.name == 'desc': | |
| 88 self.desc = value | |
| 89 elif property.name == 'title': | |
| 90 self.title = value | |
| 91 elif property.name == 'unread': | |
| 92 self.unread = value | |
| 93 pass | |
| 94 | |
| 95 def check_thread_for_death(self): | |
| 96 #if self.thread.running: | |
| 97 # sys.stderr.write(time.ctime() + "continue") | |
| 98 # return True | |
| 99 # The thread has ended!! | |
| 100 #result = self.thread.result | |
| 101 #self.thread = None | |
| 102 result = feedparser.parse(self.url) | |
| 103 channel = result['channel'] | |
| 104 self.set_property('link', channel['link']) | |
| 105 self.set_property('desc', channel['description']) | |
| 106 self.set_property('title', channel['title']) | |
| 107 self.set_property('unread', len(result['items'])) | |
| 108 self.timer = 0 | |
| 109 items = result['items'] | |
| 110 tmp = {} | |
| 111 for item in self.items: | |
| 112 tmp[hash(item)] = item | |
| 113 | |
| 114 for item in items: | |
| 115 try: | |
| 116 exist = self.hash[item_hash(item)] | |
| 117 del tmp[hash(exist)] | |
| 118 except: | |
| 119 itm = FeedItem(item, self) | |
| 120 self.items.append(itm) | |
| 121 self.emit('added', itm) | |
| 122 self.hash[item_hash(item)] = itm | |
| 123 for hv in tmp: | |
| 124 tmp[hv].remove() | |
| 125 | |
| 126 return False | |
| 127 | |
| 128 def refresh(self): | |
| 129 #if self.thread == 0: | |
| 130 # self.thread = FeedReader(self) | |
| 131 # self.thread.start() | |
| 132 if self.timer == 0: | |
| 133 self.timer = gobject.timeout_add(1000, self.check_thread_for_death) | |
| 134 | |
| 135 gobject.type_register(Feed) | |
| 136 | |
| 137 ## | |
| 138 # A FeedReader class, which is threaded to make sure it doesn't freeze the ui | |
| 139 # (this thing doesn't quite work ... yet) | |
| 140 ## | |
| 141 class FeedReader(threading.Thread): | |
| 142 def __init__(self, feed): | |
| 143 self.feed = feed | |
| 144 self.running = True | |
| 145 threading.Thread.__init__(self) | |
| 146 | |
| 147 def run(self): | |
| 148 sys.stderr.write(str(time.ctime()) + " STARTED!!!\n\n\n") | |
| 149 self.running = True | |
| 150 self.result = feedparser.parse(self.feed.url) | |
| 151 self.running = False | |
| 152 sys.stderr.write(str(time.ctime()) + " DONE!!!\n\n\n") | |
| 153 | |
| 154 feeds = [] | |
| 155 urls = ("http://rss.slashdot.org/Slashdot/slashdot", | |
| 156 "http://www.python.org/channews.rdf", | |
| 157 "http://pidgin.im/rss.php", | |
| 158 "./rss.php" | |
| 159 ) | |
| 160 | |
| 161 for url in urls: | |
| 162 feed = Feed(url) | |
| 163 feeds.append(feed) | |
| 164 |
