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#
# Copyright 2009, Martin Owens.
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
#
"""
Plugin base for RSS based wallpaper sources.
"""
from gwc.base import ListerBase
class rssBase(ListerBase):
"""Get a random wallpaper from an RSS feed"""
def __init__(self, folder, url):
self._url = unicode(url)
lister.__init__(self, folder)
def getList(self):
"""Download rss feed, turn into list of addresses"""
feedxml = self.get_url(self._url)
if True:
xmldoc = minidom.parseString(feedxml)
for part in xmldoc.childNodes:
if part.nodeType==1 and part.tagName=='rss':
for channel in part.childNodes:
if channel.nodeType==1 and channel.tagName=='channel':
for item in self.listFromRSS(channel):
yield item
def listFromRSS(self, channel):
for item in channel.childNodes:
if item.nodeType==1 and item.tagName=='item':
item = self.rssItem(item)
if item:
yield item
def rssItem(self, item):
link = None
for attr in item.childNodes:
if attr.nodeType==1:
if attr.tagName=='link':
# This allows feeds that put their images as links, or for hops.
link = ''
for text in attr.childNodes:
if text.nodeType==3:
link += text.data
elif attr.tagName=='media:content' and attr.getAttribute('type')=='image/jpeg':
# This allows rss feeds targeting media content to be used.
return attr.getAttribute('url')
return link
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