##########################################################################
# Copyright 2009 Carlos Ribeiro
#
# This file is part of Radio Tray
#
# Radio Tray 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 1 of the License, or
# (at your option) any later version.
#
# Radio Tray 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 Radio Tray. If not, see <http://www.gnu.org/licenses/>.
#
##########################################################################
import urllib2
from lxml import etree
from lxml import objectify
from StringIO import StringIO
from lib.common import USER_AGENT
import logging
class XspfPlaylistDecoder:
def __init__(self):
self.log = logging.getLogger('radiotray')
self.log.debug('XSPF playlist decoder')
def isStreamValid(self, contentType, firstBytes):
if('application/xspf+xml' in contentType):
self.log.info('Stream is readable by XSPF Playlist Decoder')
return True
else:
return False
def extractPlaylist(self, url):
self.log.info('Downloading playlist...')
req = urllib2.Request(url)
req.add_header('User-Agent', USER_AGENT)
f = urllib2.urlopen(req)
str = f.read()
f.close()
self.log.info('Playlist downloaded')
self.log.info('Decoding playlist...')
parser = etree.XMLParser(recover=True)
root = etree.parse(StringIO(str),parser)
elements = root.xpath("//xspf:track/xspf:location",namespaces={'xspf':'http://xspf.org/ns/0/'})
result = []
for r in elements:
result.append(r.text)
if (len(result) > 0):
return result
else:
return None