Move third-party feedparser.py out of the soc framework package into its own
authorTodd Larsen <tlarsen@google.com>
Tue, 16 Sep 2008 16:22:49 +0000
changeset 151 6f8eb27752dc
parent 150 715b07485c48
child 152 7c1e2cb6dc44
Move third-party feedparser.py out of the soc framework package into its own package (similar to django).
app/feedparser/LICENSE
app/feedparser/__init__.py
app/soc/utils/feedparser.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/feedparser/LICENSE	Tue Sep 16 16:22:49 2008 +0000
@@ -0,0 +1,23 @@
+Copyright (c) 2002-2006, Mark Pilgrim, All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/feedparser/__init__.py	Tue Sep 16 16:22:49 2008 +0000
@@ -0,0 +1,2858 @@
+#!/usr/bin/env python
+"""Universal feed parser
+
+Handles RSS 0.9x, RSS 1.0, RSS 2.0, CDF, Atom 0.3, and Atom 1.0 feeds
+
+Visit http://feedparser.org/ for the latest version
+Visit http://feedparser.org/docs/ for the latest documentation
+
+Required: Python 2.1 or later
+Recommended: Python 2.3 or later
+Recommended: CJKCodecs and iconv_codec <http://cjkpython.i18n.org/>
+"""
+
+__version__ = "4.1"# + "$Revision: 1.92 $"[11:15] + "-cvs"
+__license__ = """Copyright (c) 2002-2006, Mark Pilgrim, All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE."""
+__author__ = "Mark Pilgrim <http://diveintomark.org/>"
+__contributors__ = ["Jason Diamond <http://injektilo.org/>",
+                    "John Beimler <http://john.beimler.org/>",
+                    "Fazal Majid <http://www.majid.info/mylos/weblog/>",
+                    "Aaron Swartz <http://aaronsw.com/>",
+                    "Kevin Marks <http://epeus.blogspot.com/>"]
+_debug = 0
+
+# HTTP "User-Agent" header to send to servers when downloading feeds.
+# If you are embedding feedparser in a larger application, you should
+# change this to your application name and URL.
+USER_AGENT = "UniversalFeedParser/%s +http://feedparser.org/" % __version__
+
+# HTTP "Accept" header to send to servers when downloading feeds.  If you don't
+# want to send an Accept header, set this to None.
+ACCEPT_HEADER = "application/atom+xml,application/rdf+xml,application/rss+xml,application/x-netcdf,application/xml;q=0.9,text/xml;q=0.2,*/*;q=0.1"
+
+# List of preferred XML parsers, by SAX driver name.  These will be tried first,
+# but if they're not installed, Python will keep searching through its own list
+# of pre-installed parsers until it finds one that supports everything we need.
+PREFERRED_XML_PARSERS = ["drv_libxml2"]
+
+# If you want feedparser to automatically run HTML markup through HTML Tidy, set
+# this to 1.  Requires mxTidy <http://www.egenix.com/files/python/mxTidy.html>
+# or utidylib <http://utidylib.berlios.de/>.
+TIDY_MARKUP = 0
+
+# List of Python interfaces for HTML Tidy, in order of preference.  Only useful
+# if TIDY_MARKUP = 1
+PREFERRED_TIDY_INTERFACES = ["uTidy", "mxTidy"]
+
+# ---------- required modules (should come with any Python distribution) ----------
+import sgmllib, re, sys, copy, urlparse, time, rfc822, types, cgi, urllib, urllib2
+try:
+    from cStringIO import StringIO as _StringIO
+except:
+    from StringIO import StringIO as _StringIO
+
+# ---------- optional modules (feedparser will work without these, but with reduced functionality) ----------
+
+# gzip is included with most Python distributions, but may not be available if you compiled your own
+try:
+    import gzip
+except:
+    gzip = None
+try:
+    import zlib
+except:
+    zlib = None
+
+# If a real XML parser is available, feedparser will attempt to use it.  feedparser has
+# been tested with the built-in SAX parser, PyXML, and libxml2.  On platforms where the
+# Python distribution does not come with an XML parser (such as Mac OS X 10.2 and some
+# versions of FreeBSD), feedparser will quietly fall back on regex-based parsing.
+try:
+    import xml.sax
+    xml.sax.make_parser(PREFERRED_XML_PARSERS) # test for valid parsers
+    from xml.sax.saxutils import escape as _xmlescape
+    _XML_AVAILABLE = 1
+except:
+    _XML_AVAILABLE = 0
+    def _xmlescape(data):
+        data = data.replace('&', '&amp;')
+        data = data.replace('>', '&gt;')
+        data = data.replace('<', '&lt;')
+        return data
+
+# base64 support for Atom feeds that contain embedded binary data
+try:
+    import base64, binascii
+except:
+    base64 = binascii = None
+
+# cjkcodecs and iconv_codec provide support for more character encodings.
+# Both are available from http://cjkpython.i18n.org/
+try:
+    import cjkcodecs.aliases
+except:
+    pass
+try:
+    import iconv_codec
+except:
+    pass
+
+# chardet library auto-detects character encodings
+# Download from http://chardet.feedparser.org/
+try:
+    import chardet
+    if _debug:
+        import chardet.constants
+        chardet.constants._debug = 1
+except:
+    chardet = None
+
+# ---------- don't touch these ----------
+class ThingsNobodyCaresAboutButMe(Exception): pass
+class CharacterEncodingOverride(ThingsNobodyCaresAboutButMe): pass
+class CharacterEncodingUnknown(ThingsNobodyCaresAboutButMe): pass
+class NonXMLContentType(ThingsNobodyCaresAboutButMe): pass
+class UndeclaredNamespace(Exception): pass
+
+sgmllib.tagfind = re.compile('[a-zA-Z][-_.:a-zA-Z0-9]*')
+sgmllib.special = re.compile('<!')
+sgmllib.charref = re.compile('&#(x?[0-9A-Fa-f]+)[^0-9A-Fa-f]')
+
+SUPPORTED_VERSIONS = {'': 'unknown',
+                      'rss090': 'RSS 0.90',
+                      'rss091n': 'RSS 0.91 (Netscape)',
+                      'rss091u': 'RSS 0.91 (Userland)',
+                      'rss092': 'RSS 0.92',
+                      'rss093': 'RSS 0.93',
+                      'rss094': 'RSS 0.94',
+                      'rss20': 'RSS 2.0',
+                      'rss10': 'RSS 1.0',
+                      'rss': 'RSS (unknown version)',
+                      'atom01': 'Atom 0.1',
+                      'atom02': 'Atom 0.2',
+                      'atom03': 'Atom 0.3',
+                      'atom10': 'Atom 1.0',
+                      'atom': 'Atom (unknown version)',
+                      'cdf': 'CDF',
+                      'hotrss': 'Hot RSS'
+                      }
+
+try:
+    UserDict = dict
+except NameError:
+    # Python 2.1 does not have dict
+    from UserDict import UserDict
+    def dict(aList):
+        rc = {}
+        for k, v in aList:
+            rc[k] = v
+        return rc
+
+class FeedParserDict(UserDict):
+    keymap = {'channel': 'feed',
+              'items': 'entries',
+              'guid': 'id',
+              'date': 'updated',
+              'date_parsed': 'updated_parsed',
+              'description': ['subtitle', 'summary'],
+              'url': ['href'],
+              'modified': 'updated',
+              'modified_parsed': 'updated_parsed',
+              'issued': 'published',
+              'issued_parsed': 'published_parsed',
+              'copyright': 'rights',
+              'copyright_detail': 'rights_detail',
+              'tagline': 'subtitle',
+              'tagline_detail': 'subtitle_detail'}
+    def __getitem__(self, key):
+        if key == 'category':
+            return UserDict.__getitem__(self, 'tags')[0]['term']
+        if key == 'categories':
+            return [(tag['scheme'], tag['term']) for tag in UserDict.__getitem__(self, 'tags')]
+        realkey = self.keymap.get(key, key)
+        if type(realkey) == types.ListType:
+            for k in realkey:
+                if UserDict.has_key(self, k):
+                    return UserDict.__getitem__(self, k)
+        if UserDict.has_key(self, key):
+            return UserDict.__getitem__(self, key)
+        return UserDict.__getitem__(self, realkey)
+
+    def __setitem__(self, key, value):
+        for k in self.keymap.keys():
+            if key == k:
+                key = self.keymap[k]
+                if type(key) == types.ListType:
+                    key = key[0]
+        return UserDict.__setitem__(self, key, value)
+
+    def get(self, key, default=None):
+        if self.has_key(key):
+            return self[key]
+        else:
+            return default
+
+    def setdefault(self, key, value):
+        if not self.has_key(key):
+            self[key] = value
+        return self[key]
+        
+    def has_key(self, key):
+        try:
+            return hasattr(self, key) or UserDict.has_key(self, key)
+        except AttributeError:
+            return False
+        
+    def __getattr__(self, key):
+        try:
+            return self.__dict__[key]
+        except KeyError:
+            pass
+        try:
+            assert not key.startswith('_')
+            return self.__getitem__(key)
+        except:
+            raise AttributeError, "object has no attribute '%s'" % key
+
+    def __setattr__(self, key, value):
+        if key.startswith('_') or key == 'data':
+            self.__dict__[key] = value
+        else:
+            return self.__setitem__(key, value)
+
+    def __contains__(self, key):
+        return self.has_key(key)
+
+def zopeCompatibilityHack():
+    global FeedParserDict
+    del FeedParserDict
+    def FeedParserDict(aDict=None):
+        rc = {}
+        if aDict:
+            rc.update(aDict)
+        return rc
+
+_ebcdic_to_ascii_map = None
+def _ebcdic_to_ascii(s):
+    global _ebcdic_to_ascii_map
+    if not _ebcdic_to_ascii_map:
+        emap = (
+            0,1,2,3,156,9,134,127,151,141,142,11,12,13,14,15,
+            16,17,18,19,157,133,8,135,24,25,146,143,28,29,30,31,
+            128,129,130,131,132,10,23,27,136,137,138,139,140,5,6,7,
+            144,145,22,147,148,149,150,4,152,153,154,155,20,21,158,26,
+            32,160,161,162,163,164,165,166,167,168,91,46,60,40,43,33,
+            38,169,170,171,172,173,174,175,176,177,93,36,42,41,59,94,
+            45,47,178,179,180,181,182,183,184,185,124,44,37,95,62,63,
+            186,187,188,189,190,191,192,193,194,96,58,35,64,39,61,34,
+            195,97,98,99,100,101,102,103,104,105,196,197,198,199,200,201,
+            202,106,107,108,109,110,111,112,113,114,203,204,205,206,207,208,
+            209,126,115,116,117,118,119,120,121,122,210,211,212,213,214,215,
+            216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,
+            123,65,66,67,68,69,70,71,72,73,232,233,234,235,236,237,
+            125,74,75,76,77,78,79,80,81,82,238,239,240,241,242,243,
+            92,159,83,84,85,86,87,88,89,90,244,245,246,247,248,249,
+            48,49,50,51,52,53,54,55,56,57,250,251,252,253,254,255
+            )
+        import string
+        _ebcdic_to_ascii_map = string.maketrans( \
+            ''.join(map(chr, range(256))), ''.join(map(chr, emap)))
+    return s.translate(_ebcdic_to_ascii_map)
+
+_urifixer = re.compile('^([A-Za-z][A-Za-z0-9+-.]*://)(/*)(.*?)')
+def _urljoin(base, uri):
+    uri = _urifixer.sub(r'\1\3', uri)
+    return urlparse.urljoin(base, uri)
+
+class _FeedParserMixin:
+    namespaces = {'': '',
+                  'http://backend.userland.com/rss': '',
+                  'http://blogs.law.harvard.edu/tech/rss': '',
+                  'http://purl.org/rss/1.0/': '',
+                  'http://my.netscape.com/rdf/simple/0.9/': '',
+                  'http://example.com/newformat#': '',
+                  'http://example.com/necho': '',
+                  'http://purl.org/echo/': '',
+                  'uri/of/echo/namespace#': '',
+                  'http://purl.org/pie/': '',
+                  'http://purl.org/atom/ns#': '',
+                  'http://www.w3.org/2005/Atom': '',
+                  'http://purl.org/rss/1.0/modules/rss091#': '',
+                  
+                  'http://webns.net/mvcb/':                               'admin',
+                  'http://purl.org/rss/1.0/modules/aggregation/':         'ag',
+                  'http://purl.org/rss/1.0/modules/annotate/':            'annotate',
+                  'http://media.tangent.org/rss/1.0/':                    'audio',
+                  'http://backend.userland.com/blogChannelModule':        'blogChannel',
+                  'http://web.resource.org/cc/':                          'cc',
+                  'http://backend.userland.com/creativeCommonsRssModule': 'creativeCommons',
+                  'http://purl.org/rss/1.0/modules/company':              'co',
+                  'http://purl.org/rss/1.0/modules/content/':             'content',
+                  'http://my.theinfo.org/changed/1.0/rss/':               'cp',
+                  'http://purl.org/dc/elements/1.1/':                     'dc',
+                  'http://purl.org/dc/terms/':                            'dcterms',
+                  'http://purl.org/rss/1.0/modules/email/':               'email',
+                  'http://purl.org/rss/1.0/modules/event/':               'ev',
+                  'http://rssnamespace.org/feedburner/ext/1.0':           'feedburner',
+                  'http://freshmeat.net/rss/fm/':                         'fm',
+                  'http://xmlns.com/foaf/0.1/':                           'foaf',
+                  'http://www.w3.org/2003/01/geo/wgs84_pos#':             'geo',
+                  'http://postneo.com/icbm/':                             'icbm',
+                  'http://purl.org/rss/1.0/modules/image/':               'image',
+                  'http://www.itunes.com/DTDs/PodCast-1.0.dtd':           'itunes',
+                  'http://example.com/DTDs/PodCast-1.0.dtd':              'itunes',
+                  'http://purl.org/rss/1.0/modules/link/':                'l',
+                  'http://search.yahoo.com/mrss':                         'media',
+                  'http://madskills.com/public/xml/rss/module/pingback/': 'pingback',
+                  'http://prismstandard.org/namespaces/1.2/basic/':       'prism',
+                  'http://www.w3.org/1999/02/22-rdf-syntax-ns#':          'rdf',
+                  'http://www.w3.org/2000/01/rdf-schema#':                'rdfs',
+                  'http://purl.org/rss/1.0/modules/reference/':           'ref',
+                  'http://purl.org/rss/1.0/modules/richequiv/':           'reqv',
+                  'http://purl.org/rss/1.0/modules/search/':              'search',
+                  'http://purl.org/rss/1.0/modules/slash/':               'slash',
+                  'http://schemas.xmlsoap.org/soap/envelope/':            'soap',
+                  'http://purl.org/rss/1.0/modules/servicestatus/':       'ss',
+                  'http://hacks.benhammersley.com/rss/streaming/':        'str',
+                  'http://purl.org/rss/1.0/modules/subscription/':        'sub',
+                  'http://purl.org/rss/1.0/modules/syndication/':         'sy',
+                  'http://purl.org/rss/1.0/modules/taxonomy/':            'taxo',
+                  'http://purl.org/rss/1.0/modules/threading/':           'thr',
+                  'http://purl.org/rss/1.0/modules/textinput/':           'ti',
+                  'http://madskills.com/public/xml/rss/module/trackback/':'trackback',
+                  'http://wellformedweb.org/commentAPI/':                 'wfw',
+                  'http://purl.org/rss/1.0/modules/wiki/':                'wiki',
+                  'http://www.w3.org/1999/xhtml':                         'xhtml',
+                  'http://www.w3.org/XML/1998/namespace':                 'xml',
+                  'http://schemas.pocketsoap.com/rss/myDescModule/':      'szf'
+}
+    _matchnamespaces = {}
+
+    can_be_relative_uri = ['link', 'id', 'wfw_comment', 'wfw_commentrss', 'docs', 'url', 'href', 'comments', 'license', 'icon', 'logo']
+    can_contain_relative_uris = ['content', 'title', 'summary', 'info', 'tagline', 'subtitle', 'copyright', 'rights', 'description']
+    can_contain_dangerous_markup = ['content', 'title', 'summary', 'info', 'tagline', 'subtitle', 'copyright', 'rights', 'description']
+    html_types = ['text/html', 'application/xhtml+xml']
+    
+    def __init__(self, baseuri=None, baselang=None, encoding='utf-8'):
+        if _debug: sys.stderr.write('initializing FeedParser\n')
+        if not self._matchnamespaces:
+            for k, v in self.namespaces.items():
+                self._matchnamespaces[k.lower()] = v
+        self.feeddata = FeedParserDict() # feed-level data
+        self.encoding = encoding # character encoding
+        self.entries = [] # list of entry-level data
+        self.version = '' # feed type/version, see SUPPORTED_VERSIONS
+        self.namespacesInUse = {} # dictionary of namespaces defined by the feed
+
+        # the following are used internally to track state;
+        # this is really out of control and should be refactored
+        self.infeed = 0
+        self.inentry = 0
+        self.incontent = 0
+        self.intextinput = 0
+        self.inimage = 0
+        self.inauthor = 0
+        self.incontributor = 0
+        self.inpublisher = 0
+        self.insource = 0
+        self.sourcedata = FeedParserDict()
+        self.contentparams = FeedParserDict()
+        self._summaryKey = None
+        self.namespacemap = {}
+        self.elementstack = []
+        self.basestack = []
+        self.langstack = []
+        self.baseuri = baseuri or ''
+        self.lang = baselang or None
+        if baselang:
+            self.feeddata['language'] = baselang
+
+    def unknown_starttag(self, tag, attrs):
+        if _debug: sys.stderr.write('start %s with %s\n' % (tag, attrs))
+        # normalize attrs
+        attrs = [(k.lower(), v) for k, v in attrs]
+        attrs = [(k, k in ('rel', 'type') and v.lower() or v) for k, v in attrs]
+        
+        # track xml:base and xml:lang
+        attrsD = dict(attrs)
+        baseuri = attrsD.get('xml:base', attrsD.get('base')) or self.baseuri
+        self.baseuri = _urljoin(self.baseuri, baseuri)
+        lang = attrsD.get('xml:lang', attrsD.get('lang'))
+        if lang == '':
+            # xml:lang could be explicitly set to '', we need to capture that
+            lang = None
+        elif lang is None:
+            # if no xml:lang is specified, use parent lang
+            lang = self.lang
+        if lang:
+            if tag in ('feed', 'rss', 'rdf:RDF'):
+                self.feeddata['language'] = lang
+        self.lang = lang
+        self.basestack.append(self.baseuri)
+        self.langstack.append(lang)
+        
+        # track namespaces
+        for prefix, uri in attrs:
+            if prefix.startswith('xmlns:'):
+                self.trackNamespace(prefix[6:], uri)
+            elif prefix == 'xmlns':
+                self.trackNamespace(None, uri)
+
+        # track inline content
+        if self.incontent and self.contentparams.has_key('type') and not self.contentparams.get('type', 'xml').endswith('xml'):
+            # element declared itself as escaped markup, but it isn't really
+            self.contentparams['type'] = 'application/xhtml+xml'
+        if self.incontent and self.contentparams.get('type') == 'application/xhtml+xml':
+            # Note: probably shouldn't simply recreate localname here, but
+            # our namespace handling isn't actually 100% correct in cases where
+            # the feed redefines the default namespace (which is actually
+            # the usual case for inline content, thanks Sam), so here we
+            # cheat and just reconstruct the element based on localname
+            # because that compensates for the bugs in our namespace handling.
+            # This will horribly munge inline content with non-empty qnames,
+            # but nobody actually does that, so I'm not fixing it.
+            tag = tag.split(':')[-1]
+            return self.handle_data('<%s%s>' % (tag, ''.join([' %s="%s"' % t for t in attrs])), escape=0)
+
+        # match namespaces
+        if tag.find(':') <> -1:
+            prefix, suffix = tag.split(':', 1)
+        else:
+            prefix, suffix = '', tag
+        prefix = self.namespacemap.get(prefix, prefix)
+        if prefix:
+            prefix = prefix + '_'
+
+        # special hack for better tracking of empty textinput/image elements in illformed feeds
+        if (not prefix) and tag not in ('title', 'link', 'description', 'name'):
+            self.intextinput = 0
+        if (not prefix) and tag not in ('title', 'link', 'description', 'url', 'href', 'width', 'height'):
+            self.inimage = 0
+        
+        # call special handler (if defined) or default handler
+        methodname = '_start_' + prefix + suffix
+        try:
+            method = getattr(self, methodname)
+            return method(attrsD)
+        except AttributeError:
+            return self.push(prefix + suffix, 1)
+
+    def unknown_endtag(self, tag):
+        if _debug: sys.stderr.write('end %s\n' % tag)
+        # match namespaces
+        if tag.find(':') <> -1:
+            prefix, suffix = tag.split(':', 1)
+        else:
+            prefix, suffix = '', tag
+        prefix = self.namespacemap.get(prefix, prefix)
+        if prefix:
+            prefix = prefix + '_'
+
+        # call special handler (if defined) or default handler
+        methodname = '_end_' + prefix + suffix
+        try:
+            method = getattr(self, methodname)
+            method()
+        except AttributeError:
+            self.pop(prefix + suffix)
+
+        # track inline content
+        if self.incontent and self.contentparams.has_key('type') and not self.contentparams.get('type', 'xml').endswith('xml'):
+            # element declared itself as escaped markup, but it isn't really
+            self.contentparams['type'] = 'application/xhtml+xml'
+        if self.incontent and self.contentparams.get('type') == 'application/xhtml+xml':
+            tag = tag.split(':')[-1]
+            self.handle_data('</%s>' % tag, escape=0)
+
+        # track xml:base and xml:lang going out of scope
+        if self.basestack:
+            self.basestack.pop()
+            if self.basestack and self.basestack[-1]:
+                self.baseuri = self.basestack[-1]
+        if self.langstack:
+            self.langstack.pop()
+            if self.langstack: # and (self.langstack[-1] is not None):
+                self.lang = self.langstack[-1]
+
+    def handle_charref(self, ref):
+        # called for each character reference, e.g. for '&#160;', ref will be '160'
+        if not self.elementstack: return
+        ref = ref.lower()
+        if ref in ('34', '38', '39', '60', '62', 'x22', 'x26', 'x27', 'x3c', 'x3e'):
+            text = '&#%s;' % ref
+        else:
+            if ref[0] == 'x':
+                c = int(ref[1:], 16)
+            else:
+                c = int(ref)
+            text = unichr(c).encode('utf-8')
+        self.elementstack[-1][2].append(text)
+
+    def handle_entityref(self, ref):
+        # called for each entity reference, e.g. for '&copy;', ref will be 'copy'
+        if not self.elementstack: return
+        if _debug: sys.stderr.write('entering handle_entityref with %s\n' % ref)
+        if ref in ('lt', 'gt', 'quot', 'amp', 'apos'):
+            text = '&%s;' % ref
+        else:
+            # entity resolution graciously donated by Aaron Swartz
+            def name2cp(k):
+                import htmlentitydefs
+                if hasattr(htmlentitydefs, 'name2codepoint'): # requires Python 2.3
+                    return htmlentitydefs.name2codepoint[k]
+                k = htmlentitydefs.entitydefs[k]
+                if k.startswith('&#') and k.endswith(';'):
+                    return int(k[2:-1]) # not in latin-1
+                return ord(k)
+            try: name2cp(ref)
+            except KeyError: text = '&%s;' % ref
+            else: text = unichr(name2cp(ref)).encode('utf-8')
+        self.elementstack[-1][2].append(text)
+
+    def handle_data(self, text, escape=1):
+        # called for each block of plain text, i.e. outside of any tag and
+        # not containing any character or entity references
+        if not self.elementstack: return
+        if escape and self.contentparams.get('type') == 'application/xhtml+xml':
+            text = _xmlescape(text)
+        self.elementstack[-1][2].append(text)
+
+    def handle_comment(self, text):
+        # called for each comment, e.g. <!-- insert message here -->
+        pass
+
+    def handle_pi(self, text):
+        # called for each processing instruction, e.g. <?instruction>
+        pass
+
+    def handle_decl(self, text):
+        pass
+
+    def parse_declaration(self, i):
+        # override internal declaration handler to handle CDATA blocks
+        if _debug: sys.stderr.write('entering parse_declaration\n')
+        if self.rawdata[i:i+9] == '<![CDATA[':
+            k = self.rawdata.find(']]>', i)
+            if k == -1: k = len(self.rawdata)
+            self.handle_data(_xmlescape(self.rawdata[i+9:k]), 0)
+            return k+3
+        else:
+            k = self.rawdata.find('>', i)
+            return k+1
+
+    def mapContentType(self, contentType):
+        contentType = contentType.lower()
+        if contentType == 'text':
+            contentType = 'text/plain'
+        elif contentType == 'html':
+            contentType = 'text/html'
+        elif contentType == 'xhtml':
+            contentType = 'application/xhtml+xml'
+        return contentType
+    
+    def trackNamespace(self, prefix, uri):
+        loweruri = uri.lower()
+        if (prefix, loweruri) == (None, 'http://my.netscape.com/rdf/simple/0.9/') and not self.version:
+            self.version = 'rss090'
+        if loweruri == 'http://purl.org/rss/1.0/' and not self.version:
+            self.version = 'rss10'
+        if loweruri == 'http://www.w3.org/2005/atom' and not self.version:
+            self.version = 'atom10'
+        if loweruri.find('backend.userland.com/rss') <> -1:
+            # match any backend.userland.com namespace
+            uri = 'http://backend.userland.com/rss'
+            loweruri = uri
+        if self._matchnamespaces.has_key(loweruri):
+            self.namespacemap[prefix] = self._matchnamespaces[loweruri]
+            self.namespacesInUse[self._matchnamespaces[loweruri]] = uri
+        else:
+            self.namespacesInUse[prefix or ''] = uri
+
+    def resolveURI(self, uri):
+        return _urljoin(self.baseuri or '', uri)
+    
+    def decodeEntities(self, element, data):
+        return data
+
+    def push(self, element, expectingText):
+        self.elementstack.append([element, expectingText, []])
+
+    def pop(self, element, stripWhitespace=1):
+        if not self.elementstack: return
+        if self.elementstack[-1][0] != element: return
+        
+        element, expectingText, pieces = self.elementstack.pop()
+        output = ''.join(pieces)
+        if stripWhitespace:
+            output = output.strip()
+        if not expectingText: return output
+
+        # decode base64 content
+        if base64 and self.contentparams.get('base64', 0):
+            try:
+                output = base64.decodestring(output)
+            except binascii.Error:
+                pass
+            except binascii.Incomplete:
+                pass
+                
+        # resolve relative URIs
+        if (element in self.can_be_relative_uri) and output:
+            output = self.resolveURI(output)
+        
+        # decode entities within embedded markup
+        if not self.contentparams.get('base64', 0):
+            output = self.decodeEntities(element, output)
+
+        # remove temporary cruft from contentparams
+        try:
+            del self.contentparams['mode']
+        except KeyError:
+            pass
+        try:
+            del self.contentparams['base64']
+        except KeyError:
+            pass
+
+        # resolve relative URIs within embedded markup
+        if self.mapContentType(self.contentparams.get('type', 'text/html')) in self.html_types:
+            if element in self.can_contain_relative_uris:
+                output = _resolveRelativeURIs(output, self.baseuri, self.encoding)
+        
+        # sanitize embedded markup
+        if self.mapContentType(self.contentparams.get('type', 'text/html')) in self.html_types:
+            if element in self.can_contain_dangerous_markup:
+                output = _sanitizeHTML(output, self.encoding)
+
+        if self.encoding and type(output) != type(u''):
+            try:
+                output = unicode(output, self.encoding)
+            except:
+                pass
+
+        # categories/tags/keywords/whatever are handled in _end_category
+        if element == 'category':
+            return output
+        
+        # store output in appropriate place(s)
+        if self.inentry and not self.insource:
+            if element == 'content':
+                self.entries[-1].setdefault(element, [])
+                contentparams = copy.deepcopy(self.contentparams)
+                contentparams['value'] = output
+                self.entries[-1][element].append(contentparams)
+            elif element == 'link':
+                self.entries[-1][element] = output
+                if output:
+                    self.entries[-1]['links'][-1]['href'] = output
+            else:
+                if element == 'description':
+                    element = 'summary'
+                self.entries[-1][element] = output
+                if self.incontent:
+                    contentparams = copy.deepcopy(self.contentparams)
+                    contentparams['value'] = output
+                    self.entries[-1][element + '_detail'] = contentparams
+        elif (self.infeed or self.insource) and (not self.intextinput) and (not self.inimage):
+            context = self._getContext()
+            if element == 'description':
+                element = 'subtitle'
+            context[element] = output
+            if element == 'link':
+                context['links'][-1]['href'] = output
+            elif self.incontent:
+                contentparams = copy.deepcopy(self.contentparams)
+                contentparams['value'] = output
+                context[element + '_detail'] = contentparams
+        return output
+
+    def pushContent(self, tag, attrsD, defaultContentType, expectingText):
+        self.incontent += 1
+        self.contentparams = FeedParserDict({
+            'type': self.mapContentType(attrsD.get('type', defaultContentType)),
+            'language': self.lang,
+            'base': self.baseuri})
+        self.contentparams['base64'] = self._isBase64(attrsD, self.contentparams)
+        self.push(tag, expectingText)
+
+    def popContent(self, tag):
+        value = self.pop(tag)
+        self.incontent -= 1
+        self.contentparams.clear()
+        return value
+        
+    def _mapToStandardPrefix(self, name):
+        colonpos = name.find(':')
+        if colonpos <> -1:
+            prefix = name[:colonpos]
+            suffix = name[colonpos+1:]
+            prefix = self.namespacemap.get(prefix, prefix)
+            name = prefix + ':' + suffix
+        return name
+        
+    def _getAttribute(self, attrsD, name):
+        return attrsD.get(self._mapToStandardPrefix(name))
+
+    def _isBase64(self, attrsD, contentparams):
+        if attrsD.get('mode', '') == 'base64':
+            return 1
+        if self.contentparams['type'].startswith('text/'):
+            return 0
+        if self.contentparams['type'].endswith('+xml'):
+            return 0
+        if self.contentparams['type'].endswith('/xml'):
+            return 0
+        return 1
+
+    def _itsAnHrefDamnIt(self, attrsD):
+        href = attrsD.get('url', attrsD.get('uri', attrsD.get('href', None)))
+        if href:
+            try:
+                del attrsD['url']
+            except KeyError:
+                pass
+            try:
+                del attrsD['uri']
+            except KeyError:
+                pass
+            attrsD['href'] = href
+        return attrsD
+    
+    def _save(self, key, value):
+        context = self._getContext()
+        context.setdefault(key, value)
+
+    def _start_rss(self, attrsD):
+        versionmap = {'0.91': 'rss091u',
+                      '0.92': 'rss092',
+                      '0.93': 'rss093',
+                      '0.94': 'rss094'}
+        if not self.version:
+            attr_version = attrsD.get('version', '')
+            version = versionmap.get(attr_version)
+            if version:
+                self.version = version
+            elif attr_version.startswith('2.'):
+                self.version = 'rss20'
+            else:
+                self.version = 'rss'
+    
+    def _start_dlhottitles(self, attrsD):
+        self.version = 'hotrss'
+
+    def _start_channel(self, attrsD):
+        self.infeed = 1
+        self._cdf_common(attrsD)
+    _start_feedinfo = _start_channel
+
+    def _cdf_common(self, attrsD):
+        if attrsD.has_key('lastmod'):
+            self._start_modified({})
+            self.elementstack[-1][-1] = attrsD['lastmod']
+            self._end_modified()
+        if attrsD.has_key('href'):
+            self._start_link({})
+            self.elementstack[-1][-1] = attrsD['href']
+            self._end_link()
+    
+    def _start_feed(self, attrsD):
+        self.infeed = 1
+        versionmap = {'0.1': 'atom01',
+                      '0.2': 'atom02',
+                      '0.3': 'atom03'}
+        if not self.version:
+            attr_version = attrsD.get('version')
+            version = versionmap.get(attr_version)
+            if version:
+                self.version = version
+            else:
+                self.version = 'atom'
+
+    def _end_channel(self):
+        self.infeed = 0
+    _end_feed = _end_channel
+    
+    def _start_image(self, attrsD):
+        self.inimage = 1
+        self.push('image', 0)
+        context = self._getContext()
+        context.setdefault('image', FeedParserDict())
+            
+    def _end_image(self):
+        self.pop('image')
+        self.inimage = 0
+
+    def _start_textinput(self, attrsD):
+        self.intextinput = 1
+        self.push('textinput', 0)
+        context = self._getContext()
+        context.setdefault('textinput', FeedParserDict())
+    _start_textInput = _start_textinput
+    
+    def _end_textinput(self):
+        self.pop('textinput')
+        self.intextinput = 0
+    _end_textInput = _end_textinput
+
+    def _start_author(self, attrsD):
+        self.inauthor = 1
+        self.push('author', 1)
+    _start_managingeditor = _start_author
+    _start_dc_author = _start_author
+    _start_dc_creator = _start_author
+    _start_itunes_author = _start_author
+
+    def _end_author(self):
+        self.pop('author')
+        self.inauthor = 0
+        self._sync_author_detail()
+    _end_managingeditor = _end_author
+    _end_dc_author = _end_author
+    _end_dc_creator = _end_author
+    _end_itunes_author = _end_author
+
+    def _start_itunes_owner(self, attrsD):
+        self.inpublisher = 1
+        self.push('publisher', 0)
+
+    def _end_itunes_owner(self):
+        self.pop('publisher')
+        self.inpublisher = 0
+        self._sync_author_detail('publisher')
+
+    def _start_contributor(self, attrsD):
+        self.incontributor = 1
+        context = self._getContext()
+        context.setdefault('contributors', [])
+        context['contributors'].append(FeedParserDict())
+        self.push('contributor', 0)
+
+    def _end_contributor(self):
+        self.pop('contributor')
+        self.incontributor = 0
+
+    def _start_dc_contributor(self, attrsD):
+        self.incontributor = 1
+        context = self._getContext()
+        context.setdefault('contributors', [])
+        context['contributors'].append(FeedParserDict())
+        self.push('name', 0)
+
+    def _end_dc_contributor(self):
+        self._end_name()
+        self.incontributor = 0
+
+    def _start_name(self, attrsD):
+        self.push('name', 0)
+    _start_itunes_name = _start_name
+
+    def _end_name(self):
+        value = self.pop('name')
+        if self.inpublisher:
+            self._save_author('name', value, 'publisher')
+        elif self.inauthor:
+            self._save_author('name', value)
+        elif self.incontributor:
+            self._save_contributor('name', value)
+        elif self.intextinput:
+            context = self._getContext()
+            context['textinput']['name'] = value
+    _end_itunes_name = _end_name
+
+    def _start_width(self, attrsD):
+        self.push('width', 0)
+
+    def _end_width(self):
+        value = self.pop('width')
+        try:
+            value = int(value)
+        except:
+            value = 0
+        if self.inimage:
+            context = self._getContext()
+            context['image']['width'] = value
+
+    def _start_height(self, attrsD):
+        self.push('height', 0)
+
+    def _end_height(self):
+        value = self.pop('height')
+        try:
+            value = int(value)
+        except:
+            value = 0
+        if self.inimage:
+            context = self._getContext()
+            context['image']['height'] = value
+
+    def _start_url(self, attrsD):
+        self.push('href', 1)
+    _start_homepage = _start_url
+    _start_uri = _start_url
+
+    def _end_url(self):
+        value = self.pop('href')
+        if self.inauthor:
+            self._save_author('href', value)
+        elif self.incontributor:
+            self._save_contributor('href', value)
+        elif self.inimage:
+            context = self._getContext()
+            context['image']['href'] = value
+        elif self.intextinput:
+            context = self._getContext()
+            context['textinput']['link'] = value
+    _end_homepage = _end_url
+    _end_uri = _end_url
+
+    def _start_email(self, attrsD):
+        self.push('email', 0)
+    _start_itunes_email = _start_email
+
+    def _end_email(self):
+        value = self.pop('email')
+        if self.inpublisher:
+            self._save_author('email', value, 'publisher')
+        elif self.inauthor:
+            self._save_author('email', value)
+        elif self.incontributor:
+            self._save_contributor('email', value)
+    _end_itunes_email = _end_email
+
+    def _getContext(self):
+        if self.insource:
+            context = self.sourcedata
+        elif self.inentry:
+            context = self.entries[-1]
+        else:
+            context = self.feeddata
+        return context
+
+    def _save_author(self, key, value, prefix='author'):
+        context = self._getContext()
+        context.setdefault(prefix + '_detail', FeedParserDict())
+        context[prefix + '_detail'][key] = value
+        self._sync_author_detail()
+
+    def _save_contributor(self, key, value):
+        context = self._getContext()
+        context.setdefault('contributors', [FeedParserDict()])
+        context['contributors'][-1][key] = value
+
+    def _sync_author_detail(self, key='author'):
+        context = self._getContext()
+        detail = context.get('%s_detail' % key)
+        if detail:
+            name = detail.get('name')
+            email = detail.get('email')
+            if name and email:
+                context[key] = '%s (%s)' % (name, email)
+            elif name:
+                context[key] = name
+            elif email:
+                context[key] = email
+        else:
+            author = context.get(key)
+            if not author: return
+            emailmatch = re.search(r'''(([a-zA-Z0-9\_\-\.\+]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?))''', author)
+            if not emailmatch: return
+            email = emailmatch.group(0)
+            # probably a better way to do the following, but it passes all the tests
+            author = author.replace(email, '')
+            author = author.replace('()', '')
+            author = author.strip()
+            if author and (author[0] == '('):
+                author = author[1:]
+            if author and (author[-1] == ')'):
+                author = author[:-1]
+            author = author.strip()
+            context.setdefault('%s_detail' % key, FeedParserDict())
+            context['%s_detail' % key]['name'] = author
+            context['%s_detail' % key]['email'] = email
+
+    def _start_subtitle(self, attrsD):
+        self.pushContent('subtitle', attrsD, 'text/plain', 1)
+    _start_tagline = _start_subtitle
+    _start_itunes_subtitle = _start_subtitle
+
+    def _end_subtitle(self):
+        self.popContent('subtitle')
+    _end_tagline = _end_subtitle
+    _end_itunes_subtitle = _end_subtitle
+            
+    def _start_rights(self, attrsD):
+        self.pushContent('rights', attrsD, 'text/plain', 1)
+    _start_dc_rights = _start_rights
+    _start_copyright = _start_rights
+
+    def _end_rights(self):
+        self.popContent('rights')
+    _end_dc_rights = _end_rights
+    _end_copyright = _end_rights
+
+    def _start_item(self, attrsD):
+        self.entries.append(FeedParserDict())
+        self.push('item', 0)
+        self.inentry = 1
+        self.guidislink = 0
+        id = self._getAttribute(attrsD, 'rdf:about')
+        if id:
+            context = self._getContext()
+            context['id'] = id
+        self._cdf_common(attrsD)
+    _start_entry = _start_item
+    _start_product = _start_item
+
+    def _end_item(self):
+        self.pop('item')
+        self.inentry = 0
+    _end_entry = _end_item
+
+    def _start_dc_language(self, attrsD):
+        self.push('language', 1)
+    _start_language = _start_dc_language
+
+    def _end_dc_language(self):
+        self.lang = self.pop('language')
+    _end_language = _end_dc_language
+
+    def _start_dc_publisher(self, attrsD):
+        self.push('publisher', 1)
+    _start_webmaster = _start_dc_publisher
+
+    def _end_dc_publisher(self):
+        self.pop('publisher')
+        self._sync_author_detail('publisher')
+    _end_webmaster = _end_dc_publisher
+
+    def _start_published(self, attrsD):
+        self.push('published', 1)
+    _start_dcterms_issued = _start_published
+    _start_issued = _start_published
+
+    def _end_published(self):
+        value = self.pop('published')
+        self._save('published_parsed', _parse_date(value))
+    _end_dcterms_issued = _end_published
+    _end_issued = _end_published
+
+    def _start_updated(self, attrsD):
+        self.push('updated', 1)
+    _start_modified = _start_updated
+    _start_dcterms_modified = _start_updated
+    _start_pubdate = _start_updated
+    _start_dc_date = _start_updated
+
+    def _end_updated(self):
+        value = self.pop('updated')
+        parsed_value = _parse_date(value)
+        self._save('updated_parsed', parsed_value)
+    _end_modified = _end_updated
+    _end_dcterms_modified = _end_updated
+    _end_pubdate = _end_updated
+    _end_dc_date = _end_updated
+
+    def _start_created(self, attrsD):
+        self.push('created', 1)
+    _start_dcterms_created = _start_created
+
+    def _end_created(self):
+        value = self.pop('created')
+        self._save('created_parsed', _parse_date(value))
+    _end_dcterms_created = _end_created
+
+    def _start_expirationdate(self, attrsD):
+        self.push('expired', 1)
+
+    def _end_expirationdate(self):
+        self._save('expired_parsed', _parse_date(self.pop('expired')))
+
+    def _start_cc_license(self, attrsD):
+        self.push('license', 1)
+        value = self._getAttribute(attrsD, 'rdf:resource')
+        if value:
+            self.elementstack[-1][2].append(value)
+        self.pop('license')
+        
+    def _start_creativecommons_license(self, attrsD):
+        self.push('license', 1)
+
+    def _end_creativecommons_license(self):
+        self.pop('license')
+
+    def _addTag(self, term, scheme, label):
+        context = self._getContext()
+        tags = context.setdefault('tags', [])
+        if (not term) and (not scheme) and (not label): return
+        value = FeedParserDict({'term': term, 'scheme': scheme, 'label': label})
+        if value not in tags:
+            tags.append(FeedParserDict({'term': term, 'scheme': scheme, 'label': label}))
+
+    def _start_category(self, attrsD):
+        if _debug: sys.stderr.write('entering _start_category with %s\n' % repr(attrsD))
+        term = attrsD.get('term')
+        scheme = attrsD.get('scheme', attrsD.get('domain'))
+        label = attrsD.get('label')
+        self._addTag(term, scheme, label)
+        self.push('category', 1)
+    _start_dc_subject = _start_category
+    _start_keywords = _start_category
+        
+    def _end_itunes_keywords(self):
+        for term in self.pop('itunes_keywords').split():
+            self._addTag(term, 'http://www.itunes.com/', None)
+        
+    def _start_itunes_category(self, attrsD):
+        self._addTag(attrsD.get('text'), 'http://www.itunes.com/', None)
+        self.push('category', 1)
+        
+    def _end_category(self):
+        value = self.pop('category')
+        if not value: return
+        context = self._getContext()
+        tags = context['tags']
+        if value and len(tags) and not tags[-1]['term']:
+            tags[-1]['term'] = value
+        else:
+            self._addTag(value, None, None)
+    _end_dc_subject = _end_category
+    _end_keywords = _end_category
+    _end_itunes_category = _end_category
+
+    def _start_cloud(self, attrsD):
+        self._getContext()['cloud'] = FeedParserDict(attrsD)
+        
+    def _start_link(self, attrsD):
+        attrsD.setdefault('rel', 'alternate')
+        attrsD.setdefault('type', 'text/html')
+        attrsD = self._itsAnHrefDamnIt(attrsD)
+        if attrsD.has_key('href'):
+            attrsD['href'] = self.resolveURI(attrsD['href'])
+        expectingText = self.infeed or self.inentry or self.insource
+        context = self._getContext()
+        context.setdefault('links', [])
+        context['links'].append(FeedParserDict(attrsD))
+        if attrsD['rel'] == 'enclosure':
+            self._start_enclosure(attrsD)
+        if attrsD.has_key('href'):
+            expectingText = 0
+            if (attrsD.get('rel') == 'alternate') and (self.mapContentType(attrsD.get('type')) in self.html_types):
+                context['link'] = attrsD['href']
+        else:
+            self.push('link', expectingText)
+    _start_producturl = _start_link
+
+    def _end_link(self):
+        value = self.pop('link')
+        context = self._getContext()
+        if self.intextinput:
+            context['textinput']['link'] = value
+        if self.inimage:
+            context['image']['link'] = value
+    _end_producturl = _end_link
+
+    def _start_guid(self, attrsD):
+        self.guidislink = (attrsD.get('ispermalink', 'true') == 'true')
+        self.push('id', 1)
+
+    def _end_guid(self):
+        value = self.pop('id')
+        self._save('guidislink', self.guidislink and not self._getContext().has_key('link'))
+        if self.guidislink:
+            # guid acts as link, but only if 'ispermalink' is not present or is 'true',
+            # and only if the item doesn't already have a link element
+            self._save('link', value)
+
+    def _start_title(self, attrsD):
+        self.pushContent('title', attrsD, 'text/plain', self.infeed or self.inentry or self.insource)
+    _start_dc_title = _start_title
+    _start_media_title = _start_title
+
+    def _end_title(self):
+        value = self.popContent('title')
+        context = self._getContext()
+        if self.intextinput:
+            context['textinput']['title'] = value
+        elif self.inimage:
+            context['image']['title'] = value
+    _end_dc_title = _end_title
+    _end_media_title = _end_title
+
+    def _start_description(self, attrsD):
+        context = self._getContext()
+        if context.has_key('summary'):
+            self._summaryKey = 'content'
+            self._start_content(attrsD)
+        else:
+            self.pushContent('description', attrsD, 'text/html', self.infeed or self.inentry or self.insource)
+
+    def _start_abstract(self, attrsD):
+        self.pushContent('description', attrsD, 'text/plain', self.infeed or self.inentry or self.insource)
+
+    def _end_description(self):
+        if self._summaryKey == 'content':
+            self._end_content()
+        else:
+            value = self.popContent('description')
+            context = self._getContext()
+            if self.intextinput:
+                context['textinput']['description'] = value
+            elif self.inimage:
+                context['image']['description'] = value
+        self._summaryKey = None
+    _end_abstract = _end_description
+
+    def _start_info(self, attrsD):
+        self.pushContent('info', attrsD, 'text/plain', 1)
+    _start_feedburner_browserfriendly = _start_info
+
+    def _end_info(self):
+        self.popContent('info')
+    _end_feedburner_browserfriendly = _end_info
+
+    def _start_generator(self, attrsD):
+        if attrsD:
+            attrsD = self._itsAnHrefDamnIt(attrsD)
+            if attrsD.has_key('href'):
+                attrsD['href'] = self.resolveURI(attrsD['href'])
+        self._getContext()['generator_detail'] = FeedParserDict(attrsD)
+        self.push('generator', 1)
+
+    def _end_generator(self):
+        value = self.pop('generator')
+        context = self._getContext()
+        if context.has_key('generator_detail'):
+            context['generator_detail']['name'] = value
+            
+    def _start_admin_generatoragent(self, attrsD):
+        self.push('generator', 1)
+        value = self._getAttribute(attrsD, 'rdf:resource')
+        if value:
+            self.elementstack[-1][2].append(value)
+        self.pop('generator')
+        self._getContext()['generator_detail'] = FeedParserDict({'href': value})
+
+    def _start_admin_errorreportsto(self, attrsD):
+        self.push('errorreportsto', 1)
+        value = self._getAttribute(attrsD, 'rdf:resource')
+        if value:
+            self.elementstack[-1][2].append(value)
+        self.pop('errorreportsto')
+        
+    def _start_summary(self, attrsD):
+        context = self._getContext()
+        if context.has_key('summary'):
+            self._summaryKey = 'content'
+            self._start_content(attrsD)
+        else:
+            self._summaryKey = 'summary'
+            self.pushContent(self._summaryKey, attrsD, 'text/plain', 1)
+    _start_itunes_summary = _start_summary
+
+    def _end_summary(self):
+        if self._summaryKey == 'content':
+            self._end_content()
+        else:
+            self.popContent(self._summaryKey or 'summary')
+        self._summaryKey = None
+    _end_itunes_summary = _end_summary
+        
+    def _start_enclosure(self, attrsD):
+        attrsD = self._itsAnHrefDamnIt(attrsD)
+        self._getContext().setdefault('enclosures', []).append(FeedParserDict(attrsD))
+        href = attrsD.get('href')
+        if href:
+            context = self._getContext()
+            if not context.get('id'):
+                context['id'] = href
+            
+    def _start_source(self, attrsD):
+        self.insource = 1
+
+    def _end_source(self):
+        self.insource = 0
+        self._getContext()['source'] = copy.deepcopy(self.sourcedata)
+        self.sourcedata.clear()
+
+    def _start_content(self, attrsD):
+        self.pushContent('content', attrsD, 'text/plain', 1)
+        src = attrsD.get('src')
+        if src:
+            self.contentparams['src'] = src
+        self.push('content', 1)
+
+    def _start_prodlink(self, attrsD):
+        self.pushContent('content', attrsD, 'text/html', 1)
+
+    def _start_body(self, attrsD):
+        self.pushContent('content', attrsD, 'application/xhtml+xml', 1)
+    _start_xhtml_body = _start_body
+
+    def _start_content_encoded(self, attrsD):
+        self.pushContent('content', attrsD, 'text/html', 1)
+    _start_fullitem = _start_content_encoded
+
+    def _end_content(self):
+        copyToDescription = self.mapContentType(self.contentparams.get('type')) in (['text/plain'] + self.html_types)
+        value = self.popContent('content')
+        if copyToDescription:
+            self._save('description', value)
+    _end_body = _end_content
+    _end_xhtml_body = _end_content
+    _end_content_encoded = _end_content
+    _end_fullitem = _end_content
+    _end_prodlink = _end_content
+
+    def _start_itunes_image(self, attrsD):
+        self.push('itunes_image', 0)
+        self._getContext()['image'] = FeedParserDict({'href': attrsD.get('href')})
+    _start_itunes_link = _start_itunes_image
+        
+    def _end_itunes_block(self):
+        value = self.pop('itunes_block', 0)
+        self._getContext()['itunes_block'] = (value == 'yes') and 1 or 0
+
+    def _end_itunes_explicit(self):
+        value = self.pop('itunes_explicit', 0)
+        self._getContext()['itunes_explicit'] = (value == 'yes') and 1 or 0
+
+if _XML_AVAILABLE:
+    class _StrictFeedParser(_FeedParserMixin, xml.sax.handler.ContentHandler):
+        def __init__(self, baseuri, baselang, encoding):
+            if _debug: sys.stderr.write('trying StrictFeedParser\n')
+            xml.sax.handler.ContentHandler.__init__(self)
+            _FeedParserMixin.__init__(self, baseuri, baselang, encoding)
+            self.bozo = 0
+            self.exc = None
+        
+        def startPrefixMapping(self, prefix, uri):
+            self.trackNamespace(prefix, uri)
+        
+        def startElementNS(self, name, qname, attrs):
+            namespace, localname = name
+            lowernamespace = str(namespace or '').lower()
+            if lowernamespace.find('backend.userland.com/rss') <> -1:
+                # match any backend.userland.com namespace
+                namespace = 'http://backend.userland.com/rss'
+                lowernamespace = namespace
+            if qname and qname.find(':') > 0:
+                givenprefix = qname.split(':')[0]
+            else:
+                givenprefix = None
+            prefix = self._matchnamespaces.get(lowernamespace, givenprefix)
+            if givenprefix and (prefix == None or (prefix == '' and lowernamespace == '')) and not self.namespacesInUse.has_key(givenprefix):
+                    raise UndeclaredNamespace, "'%s' is not associated with a namespace" % givenprefix
+            if prefix:
+                localname = prefix + ':' + localname
+            localname = str(localname).lower()
+            if _debug: sys.stderr.write('startElementNS: qname = %s, namespace = %s, givenprefix = %s, prefix = %s, attrs = %s, localname = %s\n' % (qname, namespace, givenprefix, prefix, attrs.items(), localname))
+
+            # qname implementation is horribly broken in Python 2.1 (it
+            # doesn't report any), and slightly broken in Python 2.2 (it
+            # doesn't report the xml: namespace). So we match up namespaces
+            # with a known list first, and then possibly override them with
+            # the qnames the SAX parser gives us (if indeed it gives us any
+            # at all).  Thanks to MatejC for helping me test this and
+            # tirelessly telling me that it didn't work yet.
+            attrsD = {}
+            for (namespace, attrlocalname), attrvalue in attrs._attrs.items():
+                lowernamespace = (namespace or '').lower()
+                prefix = self._matchnamespaces.get(lowernamespace, '')
+                if prefix:
+                    attrlocalname = prefix + ':' + attrlocalname
+                attrsD[str(attrlocalname).lower()] = attrvalue
+            for qname in attrs.getQNames():
+                attrsD[str(qname).lower()] = attrs.getValueByQName(qname)
+            self.unknown_starttag(localname, attrsD.items())
+
+        def characters(self, text):
+            self.handle_data(text)
+
+        def endElementNS(self, name, qname):
+            namespace, localname = name
+            lowernamespace = str(namespace or '').lower()
+            if qname and qname.find(':') > 0:
+                givenprefix = qname.split(':')[0]
+            else:
+                givenprefix = ''
+            prefix = self._matchnamespaces.get(lowernamespace, givenprefix)
+            if prefix:
+                localname = prefix + ':' + localname
+            localname = str(localname).lower()
+            self.unknown_endtag(localname)
+
+        def error(self, exc):
+            self.bozo = 1
+            self.exc = exc
+            
+        def fatalError(self, exc):
+            self.error(exc)
+            raise exc
+
+class _BaseHTMLProcessor(sgmllib.SGMLParser):
+    elements_no_end_tag = ['area', 'base', 'basefont', 'br', 'col', 'frame', 'hr',
+      'img', 'input', 'isindex', 'link', 'meta', 'param']
+    
+    def __init__(self, encoding):
+        self.encoding = encoding
+        if _debug: sys.stderr.write('entering BaseHTMLProcessor, encoding=%s\n' % self.encoding)
+        sgmllib.SGMLParser.__init__(self)
+        
+    def reset(self):
+        self.pieces = []
+        sgmllib.SGMLParser.reset(self)
+
+    def _shorttag_replace(self, match):
+        tag = match.group(1)
+        if tag in self.elements_no_end_tag:
+            return '<' + tag + ' />'
+        else:
+            return '<' + tag + '></' + tag + '>'
+        
+    def feed(self, data):
+        data = re.compile(r'<!((?!DOCTYPE|--|\[))', re.IGNORECASE).sub(r'&lt;!\1', data)
+        #data = re.sub(r'<(\S+?)\s*?/>', self._shorttag_replace, data) # bug [ 1399464 ] Bad regexp for _shorttag_replace
+        data = re.sub(r'<([^<\s]+?)\s*/>', self._shorttag_replace, data) 
+        data = data.replace('&#39;', "'")
+        data = data.replace('&#34;', '"')
+        if self.encoding and type(data) == type(u''):
+            data = data.encode(self.encoding)
+        sgmllib.SGMLParser.feed(self, data)
+
+    def normalize_attrs(self, attrs):
+        # utility method to be called by descendants
+        attrs = [(k.lower(), v) for k, v in attrs]
+        attrs = [(k, k in ('rel', 'type') and v.lower() or v) for k, v in attrs]
+        return attrs
+
+    def unknown_starttag(self, tag, attrs):
+        # called for each start tag
+        # attrs is a list of (attr, value) tuples
+        # e.g. for <pre class='screen'>, tag='pre', attrs=[('class', 'screen')]
+        if _debug: sys.stderr.write('_BaseHTMLProcessor, unknown_starttag, tag=%s\n' % tag)
+        uattrs = []
+        # thanks to Kevin Marks for this breathtaking hack to deal with (valid) high-bit attribute values in UTF-8 feeds
+        for key, value in attrs:
+            if type(value) != type(u''):
+                value = unicode(value, self.encoding)
+            uattrs.append((unicode(key, self.encoding), value))
+        strattrs = u''.join([u' %s="%s"' % (key, value) for key, value in uattrs]).encode(self.encoding)
+        if tag in self.elements_no_end_tag:
+            self.pieces.append('<%(tag)s%(strattrs)s />' % locals())
+        else:
+            self.pieces.append('<%(tag)s%(strattrs)s>' % locals())
+
+    def unknown_endtag(self, tag):
+        # called for each end tag, e.g. for </pre>, tag will be 'pre'
+        # Reconstruct the original end tag.
+        if tag not in self.elements_no_end_tag:
+            self.pieces.append("</%(tag)s>" % locals())
+
+    def handle_charref(self, ref):
+        # called for each character reference, e.g. for '&#160;', ref will be '160'
+        # Reconstruct the original character reference.
+        self.pieces.append('&#%(ref)s;' % locals())
+        
+    def handle_entityref(self, ref):
+        # called for each entity reference, e.g. for '&copy;', ref will be 'copy'
+        # Reconstruct the original entity reference.
+        self.pieces.append('&%(ref)s;' % locals())
+
+    def handle_data(self, text):
+        # called for each block of plain text, i.e. outside of any tag and
+        # not containing any character or entity references
+        # Store the original text verbatim.
+        if _debug: sys.stderr.write('_BaseHTMLProcessor, handle_text, text=%s\n' % text)
+        self.pieces.append(text)
+        
+    def handle_comment(self, text):
+        # called for each HTML comment, e.g. <!-- insert Javascript code here -->
+        # Reconstruct the original comment.
+        self.pieces.append('<!--%(text)s-->' % locals())
+        
+    def handle_pi(self, text):
+        # called for each processing instruction, e.g. <?instruction>
+        # Reconstruct original processing instruction.
+        self.pieces.append('<?%(text)s>' % locals())
+
+    def handle_decl(self, text):
+        # called for the DOCTYPE, if present, e.g.
+        # <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
+        #     "http://www.w3.org/TR/html4/loose.dtd">
+        # Reconstruct original DOCTYPE
+        self.pieces.append('<!%(text)s>' % locals())
+        
+    _new_declname_match = re.compile(r'[a-zA-Z][-_.a-zA-Z0-9:]*\s*').match
+    def _scan_name(self, i, declstartpos):
+        rawdata = self.rawdata
+        n = len(rawdata)
+        if i == n:
+            return None, -1
+        m = self._new_declname_match(rawdata, i)
+        if m:
+            s = m.group()
+            name = s.strip()
+            if (i + len(s)) == n:
+                return None, -1  # end of buffer
+            return name.lower(), m.end()
+        else:
+            self.handle_data(rawdata)
+#            self.updatepos(declstartpos, i)
+            return None, -1
+
+    def output(self):
+        '''Return processed HTML as a single string'''
+        return ''.join([str(p) for p in self.pieces])
+
+class _LooseFeedParser(_FeedParserMixin, _BaseHTMLProcessor):
+    def __init__(self, baseuri, baselang, encoding):
+        sgmllib.SGMLParser.__init__(self)
+        _FeedParserMixin.__init__(self, baseuri, baselang, encoding)
+
+    def decodeEntities(self, element, data):
+        data = data.replace('&#60;', '&lt;')
+        data = data.replace('&#x3c;', '&lt;')
+        data = data.replace('&#62;', '&gt;')
+        data = data.replace('&#x3e;', '&gt;')
+        data = data.replace('&#38;', '&amp;')
+        data = data.replace('&#x26;', '&amp;')
+        data = data.replace('&#34;', '&quot;')
+        data = data.replace('&#x22;', '&quot;')
+        data = data.replace('&#39;', '&apos;')
+        data = data.replace('&#x27;', '&apos;')
+        if self.contentparams.has_key('type') and not self.contentparams.get('type', 'xml').endswith('xml'):
+            data = data.replace('&lt;', '<')
+            data = data.replace('&gt;', '>')
+            data = data.replace('&amp;', '&')
+            data = data.replace('&quot;', '"')
+            data = data.replace('&apos;', "'")
+        return data
+        
+class _RelativeURIResolver(_BaseHTMLProcessor):
+    relative_uris = [('a', 'href'),
+                     ('applet', 'codebase'),
+                     ('area', 'href'),
+                     ('blockquote', 'cite'),
+                     ('body', 'background'),
+                     ('del', 'cite'),
+                     ('form', 'action'),
+                     ('frame', 'longdesc'),
+                     ('frame', 'src'),
+                     ('iframe', 'longdesc'),
+                     ('iframe', 'src'),
+                     ('head', 'profile'),
+                     ('img', 'longdesc'),
+                     ('img', 'src'),
+                     ('img', 'usemap'),
+                     ('input', 'src'),
+                     ('input', 'usemap'),
+                     ('ins', 'cite'),
+                     ('link', 'href'),
+                     ('object', 'classid'),
+                     ('object', 'codebase'),
+                     ('object', 'data'),
+                     ('object', 'usemap'),
+                     ('q', 'cite'),
+                     ('script', 'src')]
+
+    def __init__(self, baseuri, encoding):
+        _BaseHTMLProcessor.__init__(self, encoding)
+        self.baseuri = baseuri
+
+    def resolveURI(self, uri):
+        return _urljoin(self.baseuri, uri)
+    
+    def unknown_starttag(self, tag, attrs):
+        attrs = self.normalize_attrs(attrs)
+        attrs = [(key, ((tag, key) in self.relative_uris) and self.resolveURI(value) or value) for key, value in attrs]
+        _BaseHTMLProcessor.unknown_starttag(self, tag, attrs)
+        
+def _resolveRelativeURIs(htmlSource, baseURI, encoding):
+    if _debug: sys.stderr.write('entering _resolveRelativeURIs\n')
+    p = _RelativeURIResolver(baseURI, encoding)
+    p.feed(htmlSource)
+    return p.output()
+
+class _HTMLSanitizer(_BaseHTMLProcessor):
+    acceptable_elements = ['a', 'abbr', 'acronym', 'address', 'area', 'b', 'big',
+      'blockquote', 'br', 'button', 'caption', 'center', 'cite', 'code', 'col',
+      'colgroup', 'dd', 'del', 'dfn', 'dir', 'div', 'dl', 'dt', 'em', 'fieldset',
+      'font', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'hr', 'i', 'img', 'input',
+      'ins', 'kbd', 'label', 'legend', 'li', 'map', 'menu', 'ol', 'optgroup',
+      'option', 'p', 'pre', 'q', 's', 'samp', 'select', 'small', 'span', 'strike',
+      'strong', 'sub', 'sup', 'table', 'tbody', 'td', 'textarea', 'tfoot', 'th',
+      'thead', 'tr', 'tt', 'u', 'ul', 'var']
+
+    acceptable_attributes = ['abbr', 'accept', 'accept-charset', 'accesskey',
+      'action', 'align', 'alt', 'axis', 'border', 'cellpadding', 'cellspacing',
+      'char', 'charoff', 'charset', 'checked', 'cite', 'class', 'clear', 'cols',
+      'colspan', 'color', 'compact', 'coords', 'datetime', 'dir', 'disabled',
+      'enctype', 'for', 'frame', 'headers', 'height', 'href', 'hreflang', 'hspace',
+      'id', 'ismap', 'label', 'lang', 'longdesc', 'maxlength', 'media', 'method',
+      'multiple', 'name', 'nohref', 'noshade', 'nowrap', 'prompt', 'readonly',
+      'rel', 'rev', 'rows', 'rowspan', 'rules', 'scope', 'selected', 'shape', 'size',
+      'span', 'src', 'start', 'summary', 'tabindex', 'target', 'title', 'type',
+      'usemap', 'valign', 'value', 'vspace', 'width']
+
+    unacceptable_elements_with_end_tag = ['script', 'applet']
+
+    def reset(self):
+        _BaseHTMLProcessor.reset(self)
+        self.unacceptablestack = 0
+        
+    def unknown_starttag(self, tag, attrs):
+        if not tag in self.acceptable_elements:
+            if tag in self.unacceptable_elements_with_end_tag:
+                self.unacceptablestack += 1
+            return
+        attrs = self.normalize_attrs(attrs)
+        attrs = [(key, value) for key, value in attrs if key in self.acceptable_attributes]
+        _BaseHTMLProcessor.unknown_starttag(self, tag, attrs)
+        
+    def unknown_endtag(self, tag):
+        if not tag in self.acceptable_elements:
+            if tag in self.unacceptable_elements_with_end_tag:
+                self.unacceptablestack -= 1
+            return
+        _BaseHTMLProcessor.unknown_endtag(self, tag)
+
+    def handle_pi(self, text):
+        pass
+
+    def handle_decl(self, text):
+        pass
+
+    def handle_data(self, text):
+        if not self.unacceptablestack:
+            _BaseHTMLProcessor.handle_data(self, text)
+
+def _sanitizeHTML(htmlSource, encoding):
+    p = _HTMLSanitizer(encoding)
+    p.feed(htmlSource)
+    data = p.output()
+    if TIDY_MARKUP:
+        # loop through list of preferred Tidy interfaces looking for one that's installed,
+        # then set up a common _tidy function to wrap the interface-specific API.
+        _tidy = None
+        for tidy_interface in PREFERRED_TIDY_INTERFACES:
+            try:
+                if tidy_interface == "uTidy":
+                    from tidy import parseString as _utidy
+                    def _tidy(data, **kwargs):
+                        return str(_utidy(data, **kwargs))
+                    break
+                elif tidy_interface == "mxTidy":
+                    from mx.Tidy import Tidy as _mxtidy
+                    def _tidy(data, **kwargs):
+                        nerrors, nwarnings, data, errordata = _mxtidy.tidy(data, **kwargs)
+                        return data
+                    break
+            except:
+                pass
+        if _tidy:
+            utf8 = type(data) == type(u'')
+            if utf8:
+                data = data.encode('utf-8')
+            data = _tidy(data, output_xhtml=1, numeric_entities=1, wrap=0, char_encoding="utf8")
+            if utf8:
+                data = unicode(data, 'utf-8')
+            if data.count('<body'):
+                data = data.split('<body', 1)[1]
+                if data.count('>'):
+                    data = data.split('>', 1)[1]
+            if data.count('</body'):
+                data = data.split('</body', 1)[0]
+    data = data.strip().replace('\r\n', '\n')
+    return data
+
+class _FeedURLHandler(urllib2.HTTPDigestAuthHandler, urllib2.HTTPRedirectHandler, urllib2.HTTPDefaultErrorHandler):
+    def http_error_default(self, req, fp, code, msg, headers):
+        if ((code / 100) == 3) and (code != 304):
+            return self.http_error_302(req, fp, code, msg, headers)
+        infourl = urllib.addinfourl(fp, headers, req.get_full_url())
+        infourl.status = code
+        return infourl
+
+    def http_error_302(self, req, fp, code, msg, headers):
+        if headers.dict.has_key('location'):
+            infourl = urllib2.HTTPRedirectHandler.http_error_302(self, req, fp, code, msg, headers)
+        else:
+            infourl = urllib.addinfourl(fp, headers, req.get_full_url())
+        if not hasattr(infourl, 'status'):
+            infourl.status = code
+        return infourl
+
+    def http_error_301(self, req, fp, code, msg, headers):
+        if headers.dict.has_key('location'):
+            infourl = urllib2.HTTPRedirectHandler.http_error_301(self, req, fp, code, msg, headers)
+        else:
+            infourl = urllib.addinfourl(fp, headers, req.get_full_url())
+        if not hasattr(infourl, 'status'):
+            infourl.status = code
+        return infourl
+
+    http_error_300 = http_error_302
+    http_error_303 = http_error_302
+    http_error_307 = http_error_302
+        
+    def http_error_401(self, req, fp, code, msg, headers):
+        # Check if
+        # - server requires digest auth, AND
+        # - we tried (unsuccessfully) with basic auth, AND
+        # - we're using Python 2.3.3 or later (digest auth is irreparably broken in earlier versions)
+        # If all conditions hold, parse authentication information
+        # out of the Authorization header we sent the first time
+        # (for the username and password) and the WWW-Authenticate
+        # header the server sent back (for the realm) and retry
+        # the request with the appropriate digest auth headers instead.
+        # This evil genius hack has been brought to you by Aaron Swartz.
+        host = urlparse.urlparse(req.get_full_url())[1]
+        try:
+            assert sys.version.split()[0] >= '2.3.3'
+            assert base64 != None
+            user, passw = base64.decodestring(req.headers['Authorization'].split(' ')[1]).split(':')
+            realm = re.findall('realm="([^"]*)"', headers['WWW-Authenticate'])[0]
+            self.add_password(realm, host, user, passw)
+            retry = self.http_error_auth_reqed('www-authenticate', host, req, headers)
+            self.reset_retry_count()
+            return retry
+        except:
+            return self.http_error_default(req, fp, code, msg, headers)
+
+def _open_resource(url_file_stream_or_string, etag, modified, agent, referrer, handlers):
+    """URL, filename, or string --> stream
+
+    This function lets you define parsers that take any input source
+    (URL, pathname to local or network file, or actual data as a string)
+    and deal with it in a uniform manner.  Returned object is guaranteed
+    to have all the basic stdio read methods (read, readline, readlines).
+    Just .close() the object when you're done with it.
+
+    If the etag argument is supplied, it will be used as the value of an
+    If-None-Match request header.
+
+    If the modified argument is supplied, it must be a tuple of 9 integers
+    as returned by gmtime() in the standard Python time module. This MUST
+    be in GMT (Greenwich Mean Time). The formatted date/time will be used
+    as the value of an If-Modified-Since request header.
+
+    If the agent argument is supplied, it will be used as the value of a
+    User-Agent request header.
+
+    If the referrer argument is supplied, it will be used as the value of a
+    Referer[sic] request header.
+
+    If handlers is supplied, it is a list of handlers used to build a
+    urllib2 opener.
+    """
+
+    if hasattr(url_file_stream_or_string, 'read'):
+        return url_file_stream_or_string
+
+    if url_file_stream_or_string == '-':
+        return sys.stdin
+
+    if urlparse.urlparse(url_file_stream_or_string)[0] in ('http', 'https', 'ftp'):
+        if not agent:
+            agent = USER_AGENT
+        # test for inline user:password for basic auth
+        auth = None
+        if base64:
+            urltype, rest = urllib.splittype(url_file_stream_or_string)
+            realhost, rest = urllib.splithost(rest)
+            if realhost:
+                user_passwd, realhost = urllib.splituser(realhost)
+                if user_passwd:
+                    url_file_stream_or_string = '%s://%s%s' % (urltype, realhost, rest)
+                    auth = base64.encodestring(user_passwd).strip()
+        # try to open with urllib2 (to use optional headers)
+        request = urllib2.Request(url_file_stream_or_string)
+        request.add_header('User-Agent', agent)
+        if etag:
+            request.add_header('If-None-Match', etag)
+        if modified:
+            # format into an RFC 1123-compliant timestamp. We can't use
+            # time.strftime() since the %a and %b directives can be affected
+            # by the current locale, but RFC 2616 states that dates must be
+            # in English.
+            short_weekdays = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
+            months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
+            request.add_header('If-Modified-Since', '%s, %02d %s %04d %02d:%02d:%02d GMT' % (short_weekdays[modified[6]], modified[2], months[modified[1] - 1], modified[0], modified[3], modified[4], modified[5]))
+        if referrer:
+            request.add_header('Referer', referrer)
+        if gzip and zlib:
+            request.add_header('Accept-encoding', 'gzip, deflate')
+        elif gzip:
+            request.add_header('Accept-encoding', 'gzip')
+        elif zlib:
+            request.add_header('Accept-encoding', 'deflate')
+        else:
+            request.add_header('Accept-encoding', '')
+        if auth:
+            request.add_header('Authorization', 'Basic %s' % auth)
+        if ACCEPT_HEADER:
+            request.add_header('Accept', ACCEPT_HEADER)
+        request.add_header('A-IM', 'feed') # RFC 3229 support
+        opener = apply(urllib2.build_opener, tuple([_FeedURLHandler()] + handlers))
+        opener.addheaders = [] # RMK - must clear so we only send our custom User-Agent
+        try:
+            return opener.open(request)
+        finally:
+            opener.close() # JohnD
+    
+    # try to open with native open function (if url_file_stream_or_string is a filename)
+    try:
+        return open(url_file_stream_or_string)
+    except:
+        pass
+
+    # treat url_file_stream_or_string as string
+    return _StringIO(str(url_file_stream_or_string))
+
+_date_handlers = []
+def registerDateHandler(func):
+    '''Register a date handler function (takes string, returns 9-tuple date in GMT)'''
+    _date_handlers.insert(0, func)
+    
+# ISO-8601 date parsing routines written by Fazal Majid.
+# The ISO 8601 standard is very convoluted and irregular - a full ISO 8601
+# parser is beyond the scope of feedparser and would be a worthwhile addition
+# to the Python library.
+# A single regular expression cannot parse ISO 8601 date formats into groups
+# as the standard is highly irregular (for instance is 030104 2003-01-04 or
+# 0301-04-01), so we use templates instead.
+# Please note the order in templates is significant because we need a
+# greedy match.
+_iso8601_tmpl = ['YYYY-?MM-?DD', 'YYYY-MM', 'YYYY-?OOO',
+                'YY-?MM-?DD', 'YY-?OOO', 'YYYY', 
+                '-YY-?MM', '-OOO', '-YY',
+                '--MM-?DD', '--MM',
+                '---DD',
+                'CC', '']
+_iso8601_re = [
+    tmpl.replace(
+    'YYYY', r'(?P<year>\d{4})').replace(
+    'YY', r'(?P<year>\d\d)').replace(
+    'MM', r'(?P<month>[01]\d)').replace(
+    'DD', r'(?P<day>[0123]\d)').replace(
+    'OOO', r'(?P<ordinal>[0123]\d\d)').replace(
+    'CC', r'(?P<century>\d\d$)')
+    + r'(T?(?P<hour>\d{2}):(?P<minute>\d{2})'
+    + r'(:(?P<second>\d{2}))?'
+    + r'(?P<tz>[+-](?P<tzhour>\d{2})(:(?P<tzmin>\d{2}))?|Z)?)?'
+    for tmpl in _iso8601_tmpl]
+del tmpl
+_iso8601_matches = [re.compile(regex).match for regex in _iso8601_re]
+del regex
+def _parse_date_iso8601(dateString):
+    '''Parse a variety of ISO-8601-compatible formats like 20040105'''
+    m = None
+    for _iso8601_match in _iso8601_matches:
+        m = _iso8601_match(dateString)
+        if m: break
+    if not m: return
+    if m.span() == (0, 0): return
+    params = m.groupdict()
+    ordinal = params.get('ordinal', 0)
+    if ordinal:
+        ordinal = int(ordinal)
+    else:
+        ordinal = 0
+    year = params.get('year', '--')
+    if not year or year == '--':
+        year = time.gmtime()[0]
+    elif len(year) == 2:
+        # ISO 8601 assumes current century, i.e. 93 -> 2093, NOT 1993
+        year = 100 * int(time.gmtime()[0] / 100) + int(year)
+    else:
+        year = int(year)
+    month = params.get('month', '-')
+    if not month or month == '-':
+        # ordinals are NOT normalized by mktime, we simulate them
+        # by setting month=1, day=ordinal
+        if ordinal:
+            month = 1
+        else:
+            month = time.gmtime()[1]
+    month = int(month)
+    day = params.get('day', 0)
+    if not day:
+        # see above
+        if ordinal:
+            day = ordinal
+        elif params.get('century', 0) or \
+                 params.get('year', 0) or params.get('month', 0):
+            day = 1
+        else:
+            day = time.gmtime()[2]
+    else:
+        day = int(day)
+    # special case of the century - is the first year of the 21st century
+    # 2000 or 2001 ? The debate goes on...
+    if 'century' in params.keys():
+        year = (int(params['century']) - 1) * 100 + 1
+    # in ISO 8601 most fields are optional
+    for field in ['hour', 'minute', 'second', 'tzhour', 'tzmin']:
+        if not params.get(field, None):
+            params[field] = 0
+    hour = int(params.get('hour', 0))
+    minute = int(params.get('minute', 0))
+    second = int(params.get('second', 0))
+    # weekday is normalized by mktime(), we can ignore it
+    weekday = 0
+    # daylight savings is complex, but not needed for feedparser's purposes
+    # as time zones, if specified, include mention of whether it is active
+    # (e.g. PST vs. PDT, CET). Using -1 is implementation-dependent and
+    # and most implementations have DST bugs
+    daylight_savings_flag = 0
+    tm = [year, month, day, hour, minute, second, weekday,
+          ordinal, daylight_savings_flag]
+    # ISO 8601 time zone adjustments
+    tz = params.get('tz')
+    if tz and tz != 'Z':
+        if tz[0] == '-':
+            tm[3] += int(params.get('tzhour', 0))
+            tm[4] += int(params.get('tzmin', 0))
+        elif tz[0] == '+':
+            tm[3] -= int(params.get('tzhour', 0))
+            tm[4] -= int(params.get('tzmin', 0))
+        else:
+            return None
+    # Python's time.mktime() is a wrapper around the ANSI C mktime(3c)
+    # which is guaranteed to normalize d/m/y/h/m/s.
+    # Many implementations have bugs, but we'll pretend they don't.
+    return time.localtime(time.mktime(tm))
+registerDateHandler(_parse_date_iso8601)
+    
+# 8-bit date handling routines written by ytrewq1.
+_korean_year  = u'\ub144' # b3e2 in euc-kr
+_korean_month = u'\uc6d4' # bff9 in euc-kr
+_korean_day   = u'\uc77c' # c0cf in euc-kr
+_korean_am    = u'\uc624\uc804' # bfc0 c0fc in euc-kr
+_korean_pm    = u'\uc624\ud6c4' # bfc0 c8c4 in euc-kr
+
+_korean_onblog_date_re = \
+    re.compile('(\d{4})%s\s+(\d{2})%s\s+(\d{2})%s\s+(\d{2}):(\d{2}):(\d{2})' % \
+               (_korean_year, _korean_month, _korean_day))
+_korean_nate_date_re = \
+    re.compile(u'(\d{4})-(\d{2})-(\d{2})\s+(%s|%s)\s+(\d{,2}):(\d{,2}):(\d{,2})' % \
+               (_korean_am, _korean_pm))
+def _parse_date_onblog(dateString):
+    '''Parse a string according to the OnBlog 8-bit date format'''
+    m = _korean_onblog_date_re.match(dateString)
+    if not m: return
+    w3dtfdate = '%(year)s-%(month)s-%(day)sT%(hour)s:%(minute)s:%(second)s%(zonediff)s' % \
+                {'year': m.group(1), 'month': m.group(2), 'day': m.group(3),\
+                 'hour': m.group(4), 'minute': m.group(5), 'second': m.group(6),\
+                 'zonediff': '+09:00'}
+    if _debug: sys.stderr.write('OnBlog date parsed as: %s\n' % w3dtfdate)
+    return _parse_date_w3dtf(w3dtfdate)
+registerDateHandler(_parse_date_onblog)
+
+def _parse_date_nate(dateString):
+    '''Parse a string according to the Nate 8-bit date format'''
+    m = _korean_nate_date_re.match(dateString)
+    if not m: return
+    hour = int(m.group(5))
+    ampm = m.group(4)
+    if (ampm == _korean_pm):
+        hour += 12
+    hour = str(hour)
+    if len(hour) == 1:
+        hour = '0' + hour
+    w3dtfdate = '%(year)s-%(month)s-%(day)sT%(hour)s:%(minute)s:%(second)s%(zonediff)s' % \
+                {'year': m.group(1), 'month': m.group(2), 'day': m.group(3),\
+                 'hour': hour, 'minute': m.group(6), 'second': m.group(7),\
+                 'zonediff': '+09:00'}
+    if _debug: sys.stderr.write('Nate date parsed as: %s\n' % w3dtfdate)
+    return _parse_date_w3dtf(w3dtfdate)
+registerDateHandler(_parse_date_nate)
+
+_mssql_date_re = \
+    re.compile('(\d{4})-(\d{2})-(\d{2})\s+(\d{2}):(\d{2}):(\d{2})(\.\d+)?')
+def _parse_date_mssql(dateString):
+    '''Parse a string according to the MS SQL date format'''
+    m = _mssql_date_re.match(dateString)
+    if not m: return
+    w3dtfdate = '%(year)s-%(month)s-%(day)sT%(hour)s:%(minute)s:%(second)s%(zonediff)s' % \
+                {'year': m.group(1), 'month': m.group(2), 'day': m.group(3),\
+                 'hour': m.group(4), 'minute': m.group(5), 'second': m.group(6),\
+                 'zonediff': '+09:00'}
+    if _debug: sys.stderr.write('MS SQL date parsed as: %s\n' % w3dtfdate)
+    return _parse_date_w3dtf(w3dtfdate)
+registerDateHandler(_parse_date_mssql)
+
+# Unicode strings for Greek date strings
+_greek_months = \
+  { \
+   u'\u0399\u03b1\u03bd': u'Jan',       # c9e1ed in iso-8859-7
+   u'\u03a6\u03b5\u03b2': u'Feb',       # d6e5e2 in iso-8859-7
+   u'\u039c\u03ac\u03ce': u'Mar',       # ccdcfe in iso-8859-7
+   u'\u039c\u03b1\u03ce': u'Mar',       # cce1fe in iso-8859-7
+   u'\u0391\u03c0\u03c1': u'Apr',       # c1f0f1 in iso-8859-7
+   u'\u039c\u03ac\u03b9': u'May',       # ccdce9 in iso-8859-7
+   u'\u039c\u03b1\u03ca': u'May',       # cce1fa in iso-8859-7
+   u'\u039c\u03b1\u03b9': u'May',       # cce1e9 in iso-8859-7
+   u'\u0399\u03bf\u03cd\u03bd': u'Jun', # c9effded in iso-8859-7
+   u'\u0399\u03bf\u03bd': u'Jun',       # c9efed in iso-8859-7
+   u'\u0399\u03bf\u03cd\u03bb': u'Jul', # c9effdeb in iso-8859-7
+   u'\u0399\u03bf\u03bb': u'Jul',       # c9f9eb in iso-8859-7
+   u'\u0391\u03cd\u03b3': u'Aug',       # c1fde3 in iso-8859-7
+   u'\u0391\u03c5\u03b3': u'Aug',       # c1f5e3 in iso-8859-7
+   u'\u03a3\u03b5\u03c0': u'Sep',       # d3e5f0 in iso-8859-7
+   u'\u039f\u03ba\u03c4': u'Oct',       # cfeaf4 in iso-8859-7
+   u'\u039d\u03bf\u03ad': u'Nov',       # cdefdd in iso-8859-7
+   u'\u039d\u03bf\u03b5': u'Nov',       # cdefe5 in iso-8859-7
+   u'\u0394\u03b5\u03ba': u'Dec',       # c4e5ea in iso-8859-7
+  }
+
+_greek_wdays = \
+  { \
+   u'\u039a\u03c5\u03c1': u'Sun', # caf5f1 in iso-8859-7
+   u'\u0394\u03b5\u03c5': u'Mon', # c4e5f5 in iso-8859-7
+   u'\u03a4\u03c1\u03b9': u'Tue', # d4f1e9 in iso-8859-7
+   u'\u03a4\u03b5\u03c4': u'Wed', # d4e5f4 in iso-8859-7
+   u'\u03a0\u03b5\u03bc': u'Thu', # d0e5ec in iso-8859-7
+   u'\u03a0\u03b1\u03c1': u'Fri', # d0e1f1 in iso-8859-7
+   u'\u03a3\u03b1\u03b2': u'Sat', # d3e1e2 in iso-8859-7   
+  }
+
+_greek_date_format_re = \
+    re.compile(u'([^,]+),\s+(\d{2})\s+([^\s]+)\s+(\d{4})\s+(\d{2}):(\d{2}):(\d{2})\s+([^\s]+)')
+
+def _parse_date_greek(dateString):
+    '''Parse a string according to a Greek 8-bit date format.'''
+    m = _greek_date_format_re.match(dateString)
+    if not m: return
+    try:
+        wday = _greek_wdays[m.group(1)]
+        month = _greek_months[m.group(3)]
+    except:
+        return
+    rfc822date = '%(wday)s, %(day)s %(month)s %(year)s %(hour)s:%(minute)s:%(second)s %(zonediff)s' % \
+                 {'wday': wday, 'day': m.group(2), 'month': month, 'year': m.group(4),\
+                  'hour': m.group(5), 'minute': m.group(6), 'second': m.group(7),\
+                  'zonediff': m.group(8)}
+    if _debug: sys.stderr.write('Greek date parsed as: %s\n' % rfc822date)
+    return _parse_date_rfc822(rfc822date)
+registerDateHandler(_parse_date_greek)
+
+# Unicode strings for Hungarian date strings
+_hungarian_months = \
+  { \
+    u'janu\u00e1r':   u'01',  # e1 in iso-8859-2
+    u'febru\u00e1ri': u'02',  # e1 in iso-8859-2
+    u'm\u00e1rcius':  u'03',  # e1 in iso-8859-2
+    u'\u00e1prilis':  u'04',  # e1 in iso-8859-2
+    u'm\u00e1ujus':   u'05',  # e1 in iso-8859-2
+    u'j\u00fanius':   u'06',  # fa in iso-8859-2
+    u'j\u00falius':   u'07',  # fa in iso-8859-2
+    u'augusztus':     u'08',
+    u'szeptember':    u'09',
+    u'okt\u00f3ber':  u'10',  # f3 in iso-8859-2
+    u'november':      u'11',
+    u'december':      u'12',
+  }
+
+_hungarian_date_format_re = \
+  re.compile(u'(\d{4})-([^-]+)-(\d{,2})T(\d{,2}):(\d{2})((\+|-)(\d{,2}:\d{2}))')
+
+def _parse_date_hungarian(dateString):
+    '''Parse a string according to a Hungarian 8-bit date format.'''
+    m = _hungarian_date_format_re.match(dateString)
+    if not m: return
+    try:
+        month = _hungarian_months[m.group(2)]
+        day = m.group(3)
+        if len(day) == 1:
+            day = '0' + day
+        hour = m.group(4)
+        if len(hour) == 1:
+            hour = '0' + hour
+    except:
+        return
+    w3dtfdate = '%(year)s-%(month)s-%(day)sT%(hour)s:%(minute)s%(zonediff)s' % \
+                {'year': m.group(1), 'month': month, 'day': day,\
+                 'hour': hour, 'minute': m.group(5),\
+                 'zonediff': m.group(6)}
+    if _debug: sys.stderr.write('Hungarian date parsed as: %s\n' % w3dtfdate)
+    return _parse_date_w3dtf(w3dtfdate)
+registerDateHandler(_parse_date_hungarian)
+
+# W3DTF-style date parsing adapted from PyXML xml.utils.iso8601, written by
+# Drake and licensed under the Python license.  Removed all range checking
+# for month, day, hour, minute, and second, since mktime will normalize
+# these later
+def _parse_date_w3dtf(dateString):
+    def __extract_date(m):
+        year = int(m.group('year'))
+        if year < 100:
+            year = 100 * int(time.gmtime()[0] / 100) + int(year)
+        if year < 1000:
+            return 0, 0, 0
+        julian = m.group('julian')
+        if julian:
+            julian = int(julian)
+            month = julian / 30 + 1
+            day = julian % 30 + 1
+            jday = None
+            while jday != julian:
+                t = time.mktime((year, month, day, 0, 0, 0, 0, 0, 0))
+                jday = time.gmtime(t)[-2]
+                diff = abs(jday - julian)
+                if jday > julian:
+                    if diff < day:
+                        day = day - diff
+                    else:
+                        month = month - 1
+                        day = 31
+                elif jday < julian:
+                    if day + diff < 28:
+                       day = day + diff
+                    else:
+                        month = month + 1
+            return year, month, day
+        month = m.group('month')
+        day = 1
+        if month is None:
+            month = 1
+        else:
+            month = int(month)
+            day = m.group('day')
+            if day:
+                day = int(day)
+            else:
+                day = 1
+        return year, month, day
+
+    def __extract_time(m):
+        if not m:
+            return 0, 0, 0
+        hours = m.group('hours')
+        if not hours:
+            return 0, 0, 0
+        hours = int(hours)
+        minutes = int(m.group('minutes'))
+        seconds = m.group('seconds')
+        if seconds:
+            seconds = int(seconds)
+        else:
+            seconds = 0
+        return hours, minutes, seconds
+
+    def __extract_tzd(m):
+        '''Return the Time Zone Designator as an offset in seconds from UTC.'''
+        if not m:
+            return 0
+        tzd = m.group('tzd')
+        if not tzd:
+            return 0
+        if tzd == 'Z':
+            return 0
+        hours = int(m.group('tzdhours'))
+        minutes = m.group('tzdminutes')
+        if minutes:
+            minutes = int(minutes)
+        else:
+            minutes = 0
+        offset = (hours*60 + minutes) * 60
+        if tzd[0] == '+':
+            return -offset
+        return offset
+
+    __date_re = ('(?P<year>\d\d\d\d)'
+                 '(?:(?P<dsep>-|)'
+                 '(?:(?P<julian>\d\d\d)'
+                 '|(?P<month>\d\d)(?:(?P=dsep)(?P<day>\d\d))?))?')
+    __tzd_re = '(?P<tzd>[-+](?P<tzdhours>\d\d)(?::?(?P<tzdminutes>\d\d))|Z)'
+    __tzd_rx = re.compile(__tzd_re)
+    __time_re = ('(?P<hours>\d\d)(?P<tsep>:|)(?P<minutes>\d\d)'
+                 '(?:(?P=tsep)(?P<seconds>\d\d(?:[.,]\d+)?))?'
+                 + __tzd_re)
+    __datetime_re = '%s(?:T%s)?' % (__date_re, __time_re)
+    __datetime_rx = re.compile(__datetime_re)
+    m = __datetime_rx.match(dateString)
+    if (m is None) or (m.group() != dateString): return
+    gmt = __extract_date(m) + __extract_time(m) + (0, 0, 0)
+    if gmt[0] == 0: return
+    return time.gmtime(time.mktime(gmt) + __extract_tzd(m) - time.timezone)
+registerDateHandler(_parse_date_w3dtf)
+
+def _parse_date_rfc822(dateString):
+    '''Parse an RFC822, RFC1123, RFC2822, or asctime-style date'''
+    data = dateString.split()
+    if data[0][-1] in (',', '.') or data[0].lower() in rfc822._daynames:
+        del data[0]
+    if len(data) == 4:
+        s = data[3]
+        i = s.find('+')
+        if i > 0:
+            data[3:] = [s[:i], s[i+1:]]
+        else:
+            data.append('')
+        dateString = " ".join(data)
+    if len(data) < 5:
+        dateString += ' 00:00:00 GMT'
+    tm = rfc822.parsedate_tz(dateString)
+    if tm:
+        return time.gmtime(rfc822.mktime_tz(tm))
+# rfc822.py defines several time zones, but we define some extra ones.
+# 'ET' is equivalent to 'EST', etc.
+_additional_timezones = {'AT': -400, 'ET': -500, 'CT': -600, 'MT': -700, 'PT': -800}
+rfc822._timezones.update(_additional_timezones)
+registerDateHandler(_parse_date_rfc822)    
+
+def _parse_date(dateString):
+    '''Parses a variety of date formats into a 9-tuple in GMT'''
+    for handler in _date_handlers:
+        try:
+            date9tuple = handler(dateString)
+            if not date9tuple: continue
+            if len(date9tuple) != 9:
+                if _debug: sys.stderr.write('date handler function must return 9-tuple\n')
+                raise ValueError
+            map(int, date9tuple)
+            return date9tuple
+        except Exception, e:
+            if _debug: sys.stderr.write('%s raised %s\n' % (handler.__name__, repr(e)))
+            pass
+    return None
+
+def _getCharacterEncoding(http_headers, xml_data):
+    '''Get the character encoding of the XML document
+
+    http_headers is a dictionary
+    xml_data is a raw string (not Unicode)
+    
+    This is so much trickier than it sounds, it's not even funny.
+    According to RFC 3023 ('XML Media Types'), if the HTTP Content-Type
+    is application/xml, application/*+xml,
+    application/xml-external-parsed-entity, or application/xml-dtd,
+    the encoding given in the charset parameter of the HTTP Content-Type
+    takes precedence over the encoding given in the XML prefix within the
+    document, and defaults to 'utf-8' if neither are specified.  But, if
+    the HTTP Content-Type is text/xml, text/*+xml, or
+    text/xml-external-parsed-entity, the encoding given in the XML prefix
+    within the document is ALWAYS IGNORED and only the encoding given in
+    the charset parameter of the HTTP Content-Type header should be
+    respected, and it defaults to 'us-ascii' if not specified.
+
+    Furthermore, discussion on the atom-syntax mailing list with the
+    author of RFC 3023 leads me to the conclusion that any document
+    served with a Content-Type of text/* and no charset parameter
+    must be treated as us-ascii.  (We now do this.)  And also that it
+    must always be flagged as non-well-formed.  (We now do this too.)
+    
+    If Content-Type is unspecified (input was local file or non-HTTP source)
+    or unrecognized (server just got it totally wrong), then go by the
+    encoding given in the XML prefix of the document and default to
+    'iso-8859-1' as per the HTTP specification (RFC 2616).
+    
+    Then, assuming we didn't find a character encoding in the HTTP headers
+    (and the HTTP Content-type allowed us to look in the body), we need
+    to sniff the first few bytes of the XML data and try to determine
+    whether the encoding is ASCII-compatible.  Section F of the XML
+    specification shows the way here:
+    http://www.w3.org/TR/REC-xml/#sec-guessing-no-ext-info
+
+    If the sniffed encoding is not ASCII-compatible, we need to make it
+    ASCII compatible so that we can sniff further into the XML declaration
+    to find the encoding attribute, which will tell us the true encoding.
+
+    Of course, none of this guarantees that we will be able to parse the
+    feed in the declared character encoding (assuming it was declared
+    correctly, which many are not).  CJKCodecs and iconv_codec help a lot;
+    you should definitely install them if you can.
+    http://cjkpython.i18n.org/
+    '''
+
+    def _parseHTTPContentType(content_type):
+        '''takes HTTP Content-Type header and returns (content type, charset)
+
+        If no charset is specified, returns (content type, '')
+        If no content type is specified, returns ('', '')
+        Both return parameters are guaranteed to be lowercase strings
+        '''
+        content_type = content_type or ''
+        content_type, params = cgi.parse_header(content_type)
+        return content_type, params.get('charset', '').replace("'", '')
+
+    sniffed_xml_encoding = ''
+    xml_encoding = ''
+    true_encoding = ''
+    http_content_type, http_encoding = _parseHTTPContentType(http_headers.get('content-type'))
+    # Must sniff for non-ASCII-compatible character encodings before
+    # searching for XML declaration.  This heuristic is defined in
+    # section F of the XML specification:
+    # http://www.w3.org/TR/REC-xml/#sec-guessing-no-ext-info
+    try:
+        if xml_data[:4] == '\x4c\x6f\xa7\x94':
+            # EBCDIC
+            xml_data = _ebcdic_to_ascii(xml_data)
+        elif xml_data[:4] == '\x00\x3c\x00\x3f':
+            # UTF-16BE
+            sniffed_xml_encoding = 'utf-16be'
+            xml_data = unicode(xml_data, 'utf-16be').encode('utf-8')
+        elif (len(xml_data) >= 4) and (xml_data[:2] == '\xfe\xff') and (xml_data[2:4] != '\x00\x00'):
+            # UTF-16BE with BOM
+            sniffed_xml_encoding = 'utf-16be'
+            xml_data = unicode(xml_data[2:], 'utf-16be').encode('utf-8')
+        elif xml_data[:4] == '\x3c\x00\x3f\x00':
+            # UTF-16LE
+            sniffed_xml_encoding = 'utf-16le'
+            xml_data = unicode(xml_data, 'utf-16le').encode('utf-8')
+        elif (len(xml_data) >= 4) and (xml_data[:2] == '\xff\xfe') and (xml_data[2:4] != '\x00\x00'):
+            # UTF-16LE with BOM
+            sniffed_xml_encoding = 'utf-16le'
+            xml_data = unicode(xml_data[2:], 'utf-16le').encode('utf-8')
+        elif xml_data[:4] == '\x00\x00\x00\x3c':
+            # UTF-32BE
+            sniffed_xml_encoding = 'utf-32be'
+            xml_data = unicode(xml_data, 'utf-32be').encode('utf-8')
+        elif xml_data[:4] == '\x3c\x00\x00\x00':
+            # UTF-32LE
+            sniffed_xml_encoding = 'utf-32le'
+            xml_data = unicode(xml_data, 'utf-32le').encode('utf-8')
+        elif xml_data[:4] == '\x00\x00\xfe\xff':
+            # UTF-32BE with BOM
+            sniffed_xml_encoding = 'utf-32be'
+            xml_data = unicode(xml_data[4:], 'utf-32be').encode('utf-8')
+        elif xml_data[:4] == '\xff\xfe\x00\x00':
+            # UTF-32LE with BOM
+            sniffed_xml_encoding = 'utf-32le'
+            xml_data = unicode(xml_data[4:], 'utf-32le').encode('utf-8')
+        elif xml_data[:3] == '\xef\xbb\xbf':
+            # UTF-8 with BOM
+            sniffed_xml_encoding = 'utf-8'
+            xml_data = unicode(xml_data[3:], 'utf-8').encode('utf-8')
+        else:
+            # ASCII-compatible
+            pass
+        xml_encoding_match = re.compile('^<\?.*encoding=[\'"](.*?)[\'"].*\?>').match(xml_data)
+    except:
+        xml_encoding_match = None
+    if xml_encoding_match:
+        xml_encoding = xml_encoding_match.groups()[0].lower()
+        if sniffed_xml_encoding and (xml_encoding in ('iso-10646-ucs-2', 'ucs-2', 'csunicode', 'iso-10646-ucs-4', 'ucs-4', 'csucs4', 'utf-16', 'utf-32', 'utf_16', 'utf_32', 'utf16', 'u16')):
+            xml_encoding = sniffed_xml_encoding
+    acceptable_content_type = 0
+    application_content_types = ('application/xml', 'application/xml-dtd', 'application/xml-external-parsed-entity')
+    text_content_types = ('text/xml', 'text/xml-external-parsed-entity')
+    if (http_content_type in application_content_types) or \
+       (http_content_type.startswith('application/') and http_content_type.endswith('+xml')):
+        acceptable_content_type = 1
+        true_encoding = http_encoding or xml_encoding or 'utf-8'
+    elif (http_content_type in text_content_types) or \
+         (http_content_type.startswith('text/')) and http_content_type.endswith('+xml'):
+        acceptable_content_type = 1
+        true_encoding = http_encoding or 'us-ascii'
+    elif http_content_type.startswith('text/'):
+        true_encoding = http_encoding or 'us-ascii'
+    elif http_headers and (not http_headers.has_key('content-type')):
+        true_encoding = xml_encoding or 'iso-8859-1'
+    else:
+        true_encoding = xml_encoding or 'utf-8'
+    return true_encoding, http_encoding, xml_encoding, sniffed_xml_encoding, acceptable_content_type
+    
+def _toUTF8(data, encoding):
+    '''Changes an XML data stream on the fly to specify a new encoding
+
+    data is a raw sequence of bytes (not Unicode) that is presumed to be in %encoding already
+    encoding is a string recognized by encodings.aliases
+    '''
+    if _debug: sys.stderr.write('entering _toUTF8, trying encoding %s\n' % encoding)
+    # strip Byte Order Mark (if present)
+    if (len(data) >= 4) and (data[:2] == '\xfe\xff') and (data[2:4] != '\x00\x00'):
+        if _debug:
+            sys.stderr.write('stripping BOM\n')
+            if encoding != 'utf-16be':
+                sys.stderr.write('trying utf-16be instead\n')
+        encoding = 'utf-16be'
+        data = data[2:]
+    elif (len(data) >= 4) and (data[:2] == '\xff\xfe') and (data[2:4] != '\x00\x00'):
+        if _debug:
+            sys.stderr.write('stripping BOM\n')
+            if encoding != 'utf-16le':
+                sys.stderr.write('trying utf-16le instead\n')
+        encoding = 'utf-16le'
+        data = data[2:]
+    elif data[:3] == '\xef\xbb\xbf':
+        if _debug:
+            sys.stderr.write('stripping BOM\n')
+            if encoding != 'utf-8':
+                sys.stderr.write('trying utf-8 instead\n')
+        encoding = 'utf-8'
+        data = data[3:]
+    elif data[:4] == '\x00\x00\xfe\xff':
+        if _debug:
+            sys.stderr.write('stripping BOM\n')
+            if encoding != 'utf-32be':
+                sys.stderr.write('trying utf-32be instead\n')
+        encoding = 'utf-32be'
+        data = data[4:]
+    elif data[:4] == '\xff\xfe\x00\x00':
+        if _debug:
+            sys.stderr.write('stripping BOM\n')
+            if encoding != 'utf-32le':
+                sys.stderr.write('trying utf-32le instead\n')
+        encoding = 'utf-32le'
+        data = data[4:]
+    newdata = unicode(data, encoding)
+    if _debug: sys.stderr.write('successfully converted %s data to unicode\n' % encoding)
+    declmatch = re.compile('^<\?xml[^>]*?>')
+    newdecl = '''<?xml version='1.0' encoding='utf-8'?>'''
+    if declmatch.search(newdata):
+        newdata = declmatch.sub(newdecl, newdata)
+    else:
+        newdata = newdecl + u'\n' + newdata
+    return newdata.encode('utf-8')
+
+def _stripDoctype(data):
+    '''Strips DOCTYPE from XML document, returns (rss_version, stripped_data)
+
+    rss_version may be 'rss091n' or None
+    stripped_data is the same XML document, minus the DOCTYPE
+    '''
+    entity_pattern = re.compile(r'<!ENTITY([^>]*?)>', re.MULTILINE)
+    data = entity_pattern.sub('', data)
+    doctype_pattern = re.compile(r'<!DOCTYPE([^>]*?)>', re.MULTILINE)
+    doctype_results = doctype_pattern.findall(data)
+    doctype = doctype_results and doctype_results[0] or ''
+    if doctype.lower().count('netscape'):
+        version = 'rss091n'
+    else:
+        version = None
+    data = doctype_pattern.sub('', data)
+    return version, data
+    
+def parse(url_file_stream_or_string, etag=None, modified=None, agent=None, referrer=None, handlers=[]):
+    '''Parse a feed from a URL, file, stream, or string'''
+    result = FeedParserDict()
+    result['feed'] = FeedParserDict()
+    result['entries'] = []
+    if _XML_AVAILABLE:
+        result['bozo'] = 0
+    if type(handlers) == types.InstanceType:
+        handlers = [handlers]
+    try:
+        f = _open_resource(url_file_stream_or_string, etag, modified, agent, referrer, handlers)
+        data = f.read()
+    except Exception, e:
+        result['bozo'] = 1
+        result['bozo_exception'] = e
+        data = ''
+        f = None
+
+    # if feed is gzip-compressed, decompress it
+    if f and data and hasattr(f, 'headers'):
+        if gzip and f.headers.get('content-encoding', '') == 'gzip':
+            try:
+                data = gzip.GzipFile(fileobj=_StringIO(data)).read()
+            except Exception, e:
+                # Some feeds claim to be gzipped but they're not, so
+                # we get garbage.  Ideally, we should re-request the
+                # feed without the 'Accept-encoding: gzip' header,
+                # but we don't.
+                result['bozo'] = 1
+                result['bozo_exception'] = e
+                data = ''
+        elif zlib and f.headers.get('content-encoding', '') == 'deflate':
+            try:
+                data = zlib.decompress(data, -zlib.MAX_WBITS)
+            except Exception, e:
+                result['bozo'] = 1
+                result['bozo_exception'] = e
+                data = ''
+
+    # save HTTP headers
+    if hasattr(f, 'info'):
+        info = f.info()
+        result['etag'] = info.getheader('ETag')
+        last_modified = info.getheader('Last-Modified')
+        if last_modified:
+            result['modified'] = _parse_date(last_modified)
+    if hasattr(f, 'url'):
+        result['href'] = f.url
+        result['status'] = 200
+    if hasattr(f, 'status'):
+        result['status'] = f.status
+    if hasattr(f, 'headers'):
+        result['headers'] = f.headers.dict
+    if hasattr(f, 'close'):
+        f.close()
+
+    # there are four encodings to keep track of:
+    # - http_encoding is the encoding declared in the Content-Type HTTP header
+    # - xml_encoding is the encoding declared in the <?xml declaration
+    # - sniffed_encoding is the encoding sniffed from the first 4 bytes of the XML data
+    # - result['encoding'] is the actual encoding, as per RFC 3023 and a variety of other conflicting specifications
+    http_headers = result.get('headers', {})
+    result['encoding'], http_encoding, xml_encoding, sniffed_xml_encoding, acceptable_content_type = \
+        _getCharacterEncoding(http_headers, data)
+    if http_headers and (not acceptable_content_type):
+        if http_headers.has_key('content-type'):
+            bozo_message = '%s is not an XML media type' % http_headers['content-type']
+        else:
+            bozo_message = 'no Content-type specified'
+        result['bozo'] = 1
+        result['bozo_exception'] = NonXMLContentType(bozo_message)
+        
+    result['version'], data = _stripDoctype(data)
+
+    baseuri = http_headers.get('content-location', result.get('href'))
+    baselang = http_headers.get('content-language', None)
+
+    # if server sent 304, we're done
+    if result.get('status', 0) == 304:
+        result['version'] = ''
+        result['debug_message'] = 'The feed has not changed since you last checked, ' + \
+            'so the server sent no data.  This is a feature, not a bug!'
+        return result
+
+    # if there was a problem downloading, we're done
+    if not data:
+        return result
+
+    # determine character encoding
+    use_strict_parser = 0
+    known_encoding = 0
+    tried_encodings = []
+    # try: HTTP encoding, declared XML encoding, encoding sniffed from BOM
+    for proposed_encoding in (result['encoding'], xml_encoding, sniffed_xml_encoding):
+        if not proposed_encoding: continue
+        if proposed_encoding in tried_encodings: continue
+        tried_encodings.append(proposed_encoding)
+        try:
+            data = _toUTF8(data, proposed_encoding)
+            known_encoding = use_strict_parser = 1
+            break
+        except:
+            pass
+    # if no luck and we have auto-detection library, try that
+    if (not known_encoding) and chardet:
+        try:
+            proposed_encoding = chardet.detect(data)['encoding']
+            if proposed_encoding and (proposed_encoding not in tried_encodings):
+                tried_encodings.append(proposed_encoding)
+                data = _toUTF8(data, proposed_encoding)
+                known_encoding = use_strict_parser = 1
+        except:
+            pass
+    # if still no luck and we haven't tried utf-8 yet, try that
+    if (not known_encoding) and ('utf-8' not in tried_encodings):
+        try:
+            proposed_encoding = 'utf-8'
+            tried_encodings.append(proposed_encoding)
+            data = _toUTF8(data, proposed_encoding)
+            known_encoding = use_strict_parser = 1
+        except:
+            pass
+    # if still no luck and we haven't tried windows-1252 yet, try that
+    if (not known_encoding) and ('windows-1252' not in tried_encodings):
+        try:
+            proposed_encoding = 'windows-1252'
+            tried_encodings.append(proposed_encoding)
+            data = _toUTF8(data, proposed_encoding)
+            known_encoding = use_strict_parser = 1
+        except:
+            pass
+    # if still no luck, give up
+    if not known_encoding:
+        result['bozo'] = 1
+        result['bozo_exception'] = CharacterEncodingUnknown( \
+            'document encoding unknown, I tried ' + \
+            '%s, %s, utf-8, and windows-1252 but nothing worked' % \
+            (result['encoding'], xml_encoding))
+        result['encoding'] = ''
+    elif proposed_encoding != result['encoding']:
+        result['bozo'] = 1
+        result['bozo_exception'] = CharacterEncodingOverride( \
+            'documented declared as %s, but parsed as %s' % \
+            (result['encoding'], proposed_encoding))
+        result['encoding'] = proposed_encoding
+
+    if not _XML_AVAILABLE:
+        use_strict_parser = 0
+    if use_strict_parser:
+        # initialize the SAX parser
+        feedparser = _StrictFeedParser(baseuri, baselang, 'utf-8')
+        saxparser = xml.sax.make_parser(PREFERRED_XML_PARSERS)
+        saxparser.setFeature(xml.sax.handler.feature_namespaces, 1)
+        saxparser.setContentHandler(feedparser)
+        saxparser.setErrorHandler(feedparser)
+        source = xml.sax.xmlreader.InputSource()
+        source.setByteStream(_StringIO(data))
+        if hasattr(saxparser, '_ns_stack'):
+            # work around bug in built-in SAX parser (doesn't recognize xml: namespace)
+            # PyXML doesn't have this problem, and it doesn't have _ns_stack either
+            saxparser._ns_stack.append({'http://www.w3.org/XML/1998/namespace':'xml'})
+        try:
+            saxparser.parse(source)
+        except Exception, e:
+            if _debug:
+                import traceback
+                traceback.print_stack()
+                traceback.print_exc()
+                sys.stderr.write('xml parsing failed\n')
+            result['bozo'] = 1
+            result['bozo_exception'] = feedparser.exc or e
+            use_strict_parser = 0
+    if not use_strict_parser:
+        feedparser = _LooseFeedParser(baseuri, baselang, known_encoding and 'utf-8' or '')
+        feedparser.feed(data)
+    result['feed'] = feedparser.feeddata
+    result['entries'] = feedparser.entries
+    result['version'] = result['version'] or feedparser.version
+    result['namespaces'] = feedparser.namespacesInUse
+    return result
+
+if __name__ == '__main__':
+    if not sys.argv[1:]:
+        print __doc__
+        sys.exit(0)
+    else:
+        urls = sys.argv[1:]
+    zopeCompatibilityHack()
+    from pprint import pprint
+    for url in urls:
+        print url
+        print
+        result = parse(url)
+        pprint(result)
+        print
+
+#REVISION HISTORY
+#1.0 - 9/27/2002 - MAP - fixed namespace processing on prefixed RSS 2.0 elements,
+#  added Simon Fell's test suite
+#1.1 - 9/29/2002 - MAP - fixed infinite loop on incomplete CDATA sections
+#2.0 - 10/19/2002
+#  JD - use inchannel to watch out for image and textinput elements which can
+#  also contain title, link, and description elements
+#  JD - check for isPermaLink='false' attribute on guid elements
+#  JD - replaced openAnything with open_resource supporting ETag and
+#  If-Modified-Since request headers
+#  JD - parse now accepts etag, modified, agent, and referrer optional
+#  arguments
+#  JD - modified parse to return a dictionary instead of a tuple so that any
+#  etag or modified information can be returned and cached by the caller
+#2.0.1 - 10/21/2002 - MAP - changed parse() so that if we don't get anything
+#  because of etag/modified, return the old etag/modified to the caller to
+#  indicate why nothing is being returned
+#2.0.2 - 10/21/2002 - JB - added the inchannel to the if statement, otherwise its
+#  useless.  Fixes the problem JD was addressing by adding it.
+#2.1 - 11/14/2002 - MAP - added gzip support
+#2.2 - 1/27/2003 - MAP - added attribute support, admin:generatorAgent.
+#  start_admingeneratoragent is an example of how to handle elements with
+#  only attributes, no content.
+#2.3 - 6/11/2003 - MAP - added USER_AGENT for default (if caller doesn't specify);
+#  also, make sure we send the User-Agent even if urllib2 isn't available.
+#  Match any variation of backend.userland.com/rss namespace.
+#2.3.1 - 6/12/2003 - MAP - if item has both link and guid, return both as-is.
+#2.4 - 7/9/2003 - MAP - added preliminary Pie/Atom/Echo support based on Sam Ruby's
+#  snapshot of July 1 <http://www.intertwingly.net/blog/1506.html>; changed
+#  project name
+#2.5 - 7/25/2003 - MAP - changed to Python license (all contributors agree);
+#  removed unnecessary urllib code -- urllib2 should always be available anyway;
+#  return actual url, status, and full HTTP headers (as result['url'],
+#  result['status'], and result['headers']) if parsing a remote feed over HTTP --
+#  this should pass all the HTTP tests at <http://diveintomark.org/tests/client/http/>;
+#  added the latest namespace-of-the-week for RSS 2.0
+#2.5.1 - 7/26/2003 - RMK - clear opener.addheaders so we only send our custom
+#  User-Agent (otherwise urllib2 sends two, which confuses some servers)
+#2.5.2 - 7/28/2003 - MAP - entity-decode inline xml properly; added support for
+#  inline <xhtml:body> and <xhtml:div> as used in some RSS 2.0 feeds
+#2.5.3 - 8/6/2003 - TvdV - patch to track whether we're inside an image or
+#  textInput, and also to return the character encoding (if specified)
+#2.6 - 1/1/2004 - MAP - dc:author support (MarekK); fixed bug tracking
+#  nested divs within content (JohnD); fixed missing sys import (JohanS);
+#  fixed regular expression to capture XML character encoding (Andrei);
+#  added support for Atom 0.3-style links; fixed bug with textInput tracking;
+#  added support for cloud (MartijnP); added support for multiple
+#  category/dc:subject (MartijnP); normalize content model: 'description' gets
+#  description (which can come from description, summary, or full content if no
+#  description), 'content' gets dict of base/language/type/value (which can come
+#  from content:encoded, xhtml:body, content, or fullitem);
+#  fixed bug matching arbitrary Userland namespaces; added xml:base and xml:lang
+#  tracking; fixed bug tracking unknown tags; fixed bug tracking content when
+#  <content> element is not in default namespace (like Pocketsoap feed);
+#  resolve relative URLs in link, guid, docs, url, comments, wfw:comment,
+#  wfw:commentRSS; resolve relative URLs within embedded HTML markup in
+#  description, xhtml:body, content, content:encoded, title, subtitle,
+#  summary, info, tagline, and copyright; added support for pingback and
+#  trackback namespaces
+#2.7 - 1/5/2004 - MAP - really added support for trackback and pingback
+#  namespaces, as opposed to 2.6 when I said I did but didn't really;
+#  sanitize HTML markup within some elements; added mxTidy support (if
+#  installed) to tidy HTML markup within some elements; fixed indentation
+#  bug in _parse_date (FazalM); use socket.setdefaulttimeout if available
+#  (FazalM); universal date parsing and normalization (FazalM): 'created', modified',
+#  'issued' are parsed into 9-tuple date format and stored in 'created_parsed',
+#  'modified_parsed', and 'issued_parsed'; 'date' is duplicated in 'modified'
+#  and vice-versa; 'date_parsed' is duplicated in 'modified_parsed' and vice-versa
+#2.7.1 - 1/9/2004 - MAP - fixed bug handling &quot; and &apos;.  fixed memory
+#  leak not closing url opener (JohnD); added dc:publisher support (MarekK);
+#  added admin:errorReportsTo support (MarekK); Python 2.1 dict support (MarekK)
+#2.7.4 - 1/14/2004 - MAP - added workaround for improperly formed <br/> tags in
+#  encoded HTML (skadz); fixed unicode handling in normalize_attrs (ChrisL);
+#  fixed relative URI processing for guid (skadz); added ICBM support; added
+#  base64 support
+#2.7.5 - 1/15/2004 - MAP - added workaround for malformed DOCTYPE (seen on many
+#  blogspot.com sites); added _debug variable
+#2.7.6 - 1/16/2004 - MAP - fixed bug with StringIO importing
+#3.0b3 - 1/23/2004 - MAP - parse entire feed with real XML parser (if available);
+#  added several new supported namespaces; fixed bug tracking naked markup in
+#  description; added support for enclosure; added support for source; re-added
+#  support for cloud which got dropped somehow; added support for expirationDate
+#3.0b4 - 1/26/2004 - MAP - fixed xml:lang inheritance; fixed multiple bugs tracking
+#  xml:base URI, one for documents that don't define one explicitly and one for
+#  documents that define an outer and an inner xml:base that goes out of scope
+#  before the end of the document
+#3.0b5 - 1/26/2004 - MAP - fixed bug parsing multiple links at feed level
+#3.0b6 - 1/27/2004 - MAP - added feed type and version detection, result['version']
+#  will be one of SUPPORTED_VERSIONS.keys() or empty string if unrecognized;
+#  added support for creativeCommons:license and cc:license; added support for
+#  full Atom content model in title, tagline, info, copyright, summary; fixed bug
+#  with gzip encoding (not always telling server we support it when we do)
+#3.0b7 - 1/28/2004 - MAP - support Atom-style author element in author_detail
+#  (dictionary of 'name', 'url', 'email'); map author to author_detail if author
+#  contains name + email address
+#3.0b8 - 1/28/2004 - MAP - added support for contributor
+#3.0b9 - 1/29/2004 - MAP - fixed check for presence of dict function; added
+#  support for summary
+#3.0b10 - 1/31/2004 - MAP - incorporated ISO-8601 date parsing routines from
+#  xml.util.iso8601
+#3.0b11 - 2/2/2004 - MAP - added 'rights' to list of elements that can contain
+#  dangerous markup; fiddled with decodeEntities (not right); liberalized
+#  date parsing even further
+#3.0b12 - 2/6/2004 - MAP - fiddled with decodeEntities (still not right);
+#  added support to Atom 0.2 subtitle; added support for Atom content model
+#  in copyright; better sanitizing of dangerous HTML elements with end tags
+#  (script, frameset)
+#3.0b13 - 2/8/2004 - MAP - better handling of empty HTML tags (br, hr, img,
+#  etc.) in embedded markup, in either HTML or XHTML form (<br>, <br/>, <br />)
+#3.0b14 - 2/8/2004 - MAP - fixed CDATA handling in non-wellformed feeds under
+#  Python 2.1
+#3.0b15 - 2/11/2004 - MAP - fixed bug resolving relative links in wfw:commentRSS;
+#  fixed bug capturing author and contributor URL; fixed bug resolving relative
+#  links in author and contributor URL; fixed bug resolvin relative links in
+#  generator URL; added support for recognizing RSS 1.0; passed Simon Fell's
+#  namespace tests, and included them permanently in the test suite with his
+#  permission; fixed namespace handling under Python 2.1
+#3.0b16 - 2/12/2004 - MAP - fixed support for RSS 0.90 (broken in b15)
+#3.0b17 - 2/13/2004 - MAP - determine character encoding as per RFC 3023
+#3.0b18 - 2/17/2004 - MAP - always map description to summary_detail (Andrei);
+#  use libxml2 (if available)
+#3.0b19 - 3/15/2004 - MAP - fixed bug exploding author information when author
+#  name was in parentheses; removed ultra-problematic mxTidy support; patch to
+#  workaround crash in PyXML/expat when encountering invalid entities
+#  (MarkMoraes); support for textinput/textInput
+#3.0b20 - 4/7/2004 - MAP - added CDF support
+#3.0b21 - 4/14/2004 - MAP - added Hot RSS support
+#3.0b22 - 4/19/2004 - MAP - changed 'channel' to 'feed', 'item' to 'entries' in
+#  results dict; changed results dict to allow getting values with results.key
+#  as well as results[key]; work around embedded illformed HTML with half
+#  a DOCTYPE; work around malformed Content-Type header; if character encoding
+#  is wrong, try several common ones before falling back to regexes (if this
+#  works, bozo_exception is set to CharacterEncodingOverride); fixed character
+#  encoding issues in BaseHTMLProcessor by tracking encoding and converting
+#  from Unicode to raw strings before feeding data to sgmllib.SGMLParser;
+#  convert each value in results to Unicode (if possible), even if using
+#  regex-based parsing
+#3.0b23 - 4/21/2004 - MAP - fixed UnicodeDecodeError for feeds that contain
+#  high-bit characters in attributes in embedded HTML in description (thanks
+#  Thijs van de Vossen); moved guid, date, and date_parsed to mapped keys in
+#  FeedParserDict; tweaked FeedParserDict.has_key to return True if asking
+#  about a mapped key
+#3.0fc1 - 4/23/2004 - MAP - made results.entries[0].links[0] and
+#  results.entries[0].enclosures[0] into FeedParserDict; fixed typo that could
+#  cause the same encoding to be tried twice (even if it failed the first time);
+#  fixed DOCTYPE stripping when DOCTYPE contained entity declarations;
+#  better textinput and image tracking in illformed RSS 1.0 feeds
+#3.0fc2 - 5/10/2004 - MAP - added and passed Sam's amp tests; added and passed
+#  my blink tag tests
+#3.0fc3 - 6/18/2004 - MAP - fixed bug in _changeEncodingDeclaration that
+#  failed to parse utf-16 encoded feeds; made source into a FeedParserDict;
+#  duplicate admin:generatorAgent/@rdf:resource in generator_detail.url;
+#  added support for image; refactored parse() fallback logic to try other
+#  encodings if SAX parsing fails (previously it would only try other encodings
+#  if re-encoding failed); remove unichr madness in normalize_attrs now that
+#  we're properly tracking encoding in and out of BaseHTMLProcessor; set
+#  feed.language from root-level xml:lang; set entry.id from rdf:about;
+#  send Accept header
+#3.0 - 6/21/2004 - MAP - don't try iso-8859-1 (can't distinguish between
+#  iso-8859-1 and windows-1252 anyway, and most incorrectly marked feeds are
+#  windows-1252); fixed regression that could cause the same encoding to be
+#  tried twice (even if it failed the first time)
+#3.0.1 - 6/22/2004 - MAP - default to us-ascii for all text/* content types;
+#  recover from malformed content-type header parameter with no equals sign
+#  ('text/xml; charset:iso-8859-1')
+#3.1 - 6/28/2004 - MAP - added and passed tests for converting HTML entities
+#  to Unicode equivalents in illformed feeds (aaronsw); added and
+#  passed tests for converting character entities to Unicode equivalents
+#  in illformed feeds (aaronsw); test for valid parsers when setting
+#  XML_AVAILABLE; make version and encoding available when server returns
+#  a 304; add handlers parameter to pass arbitrary urllib2 handlers (like
+#  digest auth or proxy support); add code to parse username/password
+#  out of url and send as basic authentication; expose downloading-related
+#  exceptions in bozo_exception (aaronsw); added __contains__ method to
+#  FeedParserDict (aaronsw); added publisher_detail (aaronsw)
+#3.2 - 7/3/2004 - MAP - use cjkcodecs and iconv_codec if available; always
+#  convert feed to UTF-8 before passing to XML parser; completely revamped
+#  logic for determining character encoding and attempting XML parsing
+#  (much faster); increased default timeout to 20 seconds; test for presence
+#  of Location header on redirects; added tests for many alternate character
+#  encodings; support various EBCDIC encodings; support UTF-16BE and
+#  UTF16-LE with or without a BOM; support UTF-8 with a BOM; support
+#  UTF-32BE and UTF-32LE with or without a BOM; fixed crashing bug if no
+#  XML parsers are available; added support for 'Content-encoding: deflate';
+#  send blank 'Accept-encoding: ' header if neither gzip nor zlib modules
+#  are available
+#3.3 - 7/15/2004 - MAP - optimize EBCDIC to ASCII conversion; fix obscure
+#  problem tracking xml:base and xml:lang if element declares it, child
+#  doesn't, first grandchild redeclares it, and second grandchild doesn't;
+#  refactored date parsing; defined public registerDateHandler so callers
+#  can add support for additional date formats at runtime; added support
+#  for OnBlog, Nate, MSSQL, Greek, and Hungarian dates (ytrewq1); added
+#  zopeCompatibilityHack() which turns FeedParserDict into a regular
+#  dictionary, required for Zope compatibility, and also makes command-
+#  line debugging easier because pprint module formats real dictionaries
+#  better than dictionary-like objects; added NonXMLContentType exception,
+#  which is stored in bozo_exception when a feed is served with a non-XML
+#  media type such as 'text/plain'; respect Content-Language as default
+#  language if not xml:lang is present; cloud dict is now FeedParserDict;
+#  generator dict is now FeedParserDict; better tracking of xml:lang,
+#  including support for xml:lang='' to unset the current language;
+#  recognize RSS 1.0 feeds even when RSS 1.0 namespace is not the default
+#  namespace; don't overwrite final status on redirects (scenarios:
+#  redirecting to a URL that returns 304, redirecting to a URL that
+#  redirects to another URL with a different type of redirect); add
+#  support for HTTP 303 redirects
+#4.0 - MAP - support for relative URIs in xml:base attribute; fixed
+#  encoding issue with mxTidy (phopkins); preliminary support for RFC 3229;
+#  support for Atom 1.0; support for iTunes extensions; new 'tags' for
+#  categories/keywords/etc. as array of dict
+#  {'term': term, 'scheme': scheme, 'label': label} to match Atom 1.0
+#  terminology; parse RFC 822-style dates with no time; lots of other
+#  bug fixes
+#4.1 - MAP - removed socket timeout; added support for chardet library
--- a/app/soc/utils/feedparser.py	Tue Sep 16 15:56:15 2008 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,2858 +0,0 @@
-#!/usr/bin/env python
-"""Universal feed parser
-
-Handles RSS 0.9x, RSS 1.0, RSS 2.0, CDF, Atom 0.3, and Atom 1.0 feeds
-
-Visit http://feedparser.org/ for the latest version
-Visit http://feedparser.org/docs/ for the latest documentation
-
-Required: Python 2.1 or later
-Recommended: Python 2.3 or later
-Recommended: CJKCodecs and iconv_codec <http://cjkpython.i18n.org/>
-"""
-
-__version__ = "4.1"# + "$Revision: 1.92 $"[11:15] + "-cvs"
-__license__ = """Copyright (c) 2002-2006, Mark Pilgrim, All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification,
-are permitted provided that the following conditions are met:
-
-* Redistributions of source code must retain the above copyright notice,
-  this list of conditions and the following disclaimer.
-* Redistributions in binary form must reproduce the above copyright notice,
-  this list of conditions and the following disclaimer in the documentation
-  and/or other materials provided with the distribution.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
-LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE."""
-__author__ = "Mark Pilgrim <http://diveintomark.org/>"
-__contributors__ = ["Jason Diamond <http://injektilo.org/>",
-                    "John Beimler <http://john.beimler.org/>",
-                    "Fazal Majid <http://www.majid.info/mylos/weblog/>",
-                    "Aaron Swartz <http://aaronsw.com/>",
-                    "Kevin Marks <http://epeus.blogspot.com/>"]
-_debug = 0
-
-# HTTP "User-Agent" header to send to servers when downloading feeds.
-# If you are embedding feedparser in a larger application, you should
-# change this to your application name and URL.
-USER_AGENT = "UniversalFeedParser/%s +http://feedparser.org/" % __version__
-
-# HTTP "Accept" header to send to servers when downloading feeds.  If you don't
-# want to send an Accept header, set this to None.
-ACCEPT_HEADER = "application/atom+xml,application/rdf+xml,application/rss+xml,application/x-netcdf,application/xml;q=0.9,text/xml;q=0.2,*/*;q=0.1"
-
-# List of preferred XML parsers, by SAX driver name.  These will be tried first,
-# but if they're not installed, Python will keep searching through its own list
-# of pre-installed parsers until it finds one that supports everything we need.
-PREFERRED_XML_PARSERS = ["drv_libxml2"]
-
-# If you want feedparser to automatically run HTML markup through HTML Tidy, set
-# this to 1.  Requires mxTidy <http://www.egenix.com/files/python/mxTidy.html>
-# or utidylib <http://utidylib.berlios.de/>.
-TIDY_MARKUP = 0
-
-# List of Python interfaces for HTML Tidy, in order of preference.  Only useful
-# if TIDY_MARKUP = 1
-PREFERRED_TIDY_INTERFACES = ["uTidy", "mxTidy"]
-
-# ---------- required modules (should come with any Python distribution) ----------
-import sgmllib, re, sys, copy, urlparse, time, rfc822, types, cgi, urllib, urllib2
-try:
-    from cStringIO import StringIO as _StringIO
-except:
-    from StringIO import StringIO as _StringIO
-
-# ---------- optional modules (feedparser will work without these, but with reduced functionality) ----------
-
-# gzip is included with most Python distributions, but may not be available if you compiled your own
-try:
-    import gzip
-except:
-    gzip = None
-try:
-    import zlib
-except:
-    zlib = None
-
-# If a real XML parser is available, feedparser will attempt to use it.  feedparser has
-# been tested with the built-in SAX parser, PyXML, and libxml2.  On platforms where the
-# Python distribution does not come with an XML parser (such as Mac OS X 10.2 and some
-# versions of FreeBSD), feedparser will quietly fall back on regex-based parsing.
-try:
-    import xml.sax
-    xml.sax.make_parser(PREFERRED_XML_PARSERS) # test for valid parsers
-    from xml.sax.saxutils import escape as _xmlescape
-    _XML_AVAILABLE = 1
-except:
-    _XML_AVAILABLE = 0
-    def _xmlescape(data):
-        data = data.replace('&', '&amp;')
-        data = data.replace('>', '&gt;')
-        data = data.replace('<', '&lt;')
-        return data
-
-# base64 support for Atom feeds that contain embedded binary data
-try:
-    import base64, binascii
-except:
-    base64 = binascii = None
-
-# cjkcodecs and iconv_codec provide support for more character encodings.
-# Both are available from http://cjkpython.i18n.org/
-try:
-    import cjkcodecs.aliases
-except:
-    pass
-try:
-    import iconv_codec
-except:
-    pass
-
-# chardet library auto-detects character encodings
-# Download from http://chardet.feedparser.org/
-try:
-    import chardet
-    if _debug:
-        import chardet.constants
-        chardet.constants._debug = 1
-except:
-    chardet = None
-
-# ---------- don't touch these ----------
-class ThingsNobodyCaresAboutButMe(Exception): pass
-class CharacterEncodingOverride(ThingsNobodyCaresAboutButMe): pass
-class CharacterEncodingUnknown(ThingsNobodyCaresAboutButMe): pass
-class NonXMLContentType(ThingsNobodyCaresAboutButMe): pass
-class UndeclaredNamespace(Exception): pass
-
-sgmllib.tagfind = re.compile('[a-zA-Z][-_.:a-zA-Z0-9]*')
-sgmllib.special = re.compile('<!')
-sgmllib.charref = re.compile('&#(x?[0-9A-Fa-f]+)[^0-9A-Fa-f]')
-
-SUPPORTED_VERSIONS = {'': 'unknown',
-                      'rss090': 'RSS 0.90',
-                      'rss091n': 'RSS 0.91 (Netscape)',
-                      'rss091u': 'RSS 0.91 (Userland)',
-                      'rss092': 'RSS 0.92',
-                      'rss093': 'RSS 0.93',
-                      'rss094': 'RSS 0.94',
-                      'rss20': 'RSS 2.0',
-                      'rss10': 'RSS 1.0',
-                      'rss': 'RSS (unknown version)',
-                      'atom01': 'Atom 0.1',
-                      'atom02': 'Atom 0.2',
-                      'atom03': 'Atom 0.3',
-                      'atom10': 'Atom 1.0',
-                      'atom': 'Atom (unknown version)',
-                      'cdf': 'CDF',
-                      'hotrss': 'Hot RSS'
-                      }
-
-try:
-    UserDict = dict
-except NameError:
-    # Python 2.1 does not have dict
-    from UserDict import UserDict
-    def dict(aList):
-        rc = {}
-        for k, v in aList:
-            rc[k] = v
-        return rc
-
-class FeedParserDict(UserDict):
-    keymap = {'channel': 'feed',
-              'items': 'entries',
-              'guid': 'id',
-              'date': 'updated',
-              'date_parsed': 'updated_parsed',
-              'description': ['subtitle', 'summary'],
-              'url': ['href'],
-              'modified': 'updated',
-              'modified_parsed': 'updated_parsed',
-              'issued': 'published',
-              'issued_parsed': 'published_parsed',
-              'copyright': 'rights',
-              'copyright_detail': 'rights_detail',
-              'tagline': 'subtitle',
-              'tagline_detail': 'subtitle_detail'}
-    def __getitem__(self, key):
-        if key == 'category':
-            return UserDict.__getitem__(self, 'tags')[0]['term']
-        if key == 'categories':
-            return [(tag['scheme'], tag['term']) for tag in UserDict.__getitem__(self, 'tags')]
-        realkey = self.keymap.get(key, key)
-        if type(realkey) == types.ListType:
-            for k in realkey:
-                if UserDict.has_key(self, k):
-                    return UserDict.__getitem__(self, k)
-        if UserDict.has_key(self, key):
-            return UserDict.__getitem__(self, key)
-        return UserDict.__getitem__(self, realkey)
-
-    def __setitem__(self, key, value):
-        for k in self.keymap.keys():
-            if key == k:
-                key = self.keymap[k]
-                if type(key) == types.ListType:
-                    key = key[0]
-        return UserDict.__setitem__(self, key, value)
-
-    def get(self, key, default=None):
-        if self.has_key(key):
-            return self[key]
-        else:
-            return default
-
-    def setdefault(self, key, value):
-        if not self.has_key(key):
-            self[key] = value
-        return self[key]
-        
-    def has_key(self, key):
-        try:
-            return hasattr(self, key) or UserDict.has_key(self, key)
-        except AttributeError:
-            return False
-        
-    def __getattr__(self, key):
-        try:
-            return self.__dict__[key]
-        except KeyError:
-            pass
-        try:
-            assert not key.startswith('_')
-            return self.__getitem__(key)
-        except:
-            raise AttributeError, "object has no attribute '%s'" % key
-
-    def __setattr__(self, key, value):
-        if key.startswith('_') or key == 'data':
-            self.__dict__[key] = value
-        else:
-            return self.__setitem__(key, value)
-
-    def __contains__(self, key):
-        return self.has_key(key)
-
-def zopeCompatibilityHack():
-    global FeedParserDict
-    del FeedParserDict
-    def FeedParserDict(aDict=None):
-        rc = {}
-        if aDict:
-            rc.update(aDict)
-        return rc
-
-_ebcdic_to_ascii_map = None
-def _ebcdic_to_ascii(s):
-    global _ebcdic_to_ascii_map
-    if not _ebcdic_to_ascii_map:
-        emap = (
-            0,1,2,3,156,9,134,127,151,141,142,11,12,13,14,15,
-            16,17,18,19,157,133,8,135,24,25,146,143,28,29,30,31,
-            128,129,130,131,132,10,23,27,136,137,138,139,140,5,6,7,
-            144,145,22,147,148,149,150,4,152,153,154,155,20,21,158,26,
-            32,160,161,162,163,164,165,166,167,168,91,46,60,40,43,33,
-            38,169,170,171,172,173,174,175,176,177,93,36,42,41,59,94,
-            45,47,178,179,180,181,182,183,184,185,124,44,37,95,62,63,
-            186,187,188,189,190,191,192,193,194,96,58,35,64,39,61,34,
-            195,97,98,99,100,101,102,103,104,105,196,197,198,199,200,201,
-            202,106,107,108,109,110,111,112,113,114,203,204,205,206,207,208,
-            209,126,115,116,117,118,119,120,121,122,210,211,212,213,214,215,
-            216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,
-            123,65,66,67,68,69,70,71,72,73,232,233,234,235,236,237,
-            125,74,75,76,77,78,79,80,81,82,238,239,240,241,242,243,
-            92,159,83,84,85,86,87,88,89,90,244,245,246,247,248,249,
-            48,49,50,51,52,53,54,55,56,57,250,251,252,253,254,255
-            )
-        import string
-        _ebcdic_to_ascii_map = string.maketrans( \
-            ''.join(map(chr, range(256))), ''.join(map(chr, emap)))
-    return s.translate(_ebcdic_to_ascii_map)
-
-_urifixer = re.compile('^([A-Za-z][A-Za-z0-9+-.]*://)(/*)(.*?)')
-def _urljoin(base, uri):
-    uri = _urifixer.sub(r'\1\3', uri)
-    return urlparse.urljoin(base, uri)
-
-class _FeedParserMixin:
-    namespaces = {'': '',
-                  'http://backend.userland.com/rss': '',
-                  'http://blogs.law.harvard.edu/tech/rss': '',
-                  'http://purl.org/rss/1.0/': '',
-                  'http://my.netscape.com/rdf/simple/0.9/': '',
-                  'http://example.com/newformat#': '',
-                  'http://example.com/necho': '',
-                  'http://purl.org/echo/': '',
-                  'uri/of/echo/namespace#': '',
-                  'http://purl.org/pie/': '',
-                  'http://purl.org/atom/ns#': '',
-                  'http://www.w3.org/2005/Atom': '',
-                  'http://purl.org/rss/1.0/modules/rss091#': '',
-                  
-                  'http://webns.net/mvcb/':                               'admin',
-                  'http://purl.org/rss/1.0/modules/aggregation/':         'ag',
-                  'http://purl.org/rss/1.0/modules/annotate/':            'annotate',
-                  'http://media.tangent.org/rss/1.0/':                    'audio',
-                  'http://backend.userland.com/blogChannelModule':        'blogChannel',
-                  'http://web.resource.org/cc/':                          'cc',
-                  'http://backend.userland.com/creativeCommonsRssModule': 'creativeCommons',
-                  'http://purl.org/rss/1.0/modules/company':              'co',
-                  'http://purl.org/rss/1.0/modules/content/':             'content',
-                  'http://my.theinfo.org/changed/1.0/rss/':               'cp',
-                  'http://purl.org/dc/elements/1.1/':                     'dc',
-                  'http://purl.org/dc/terms/':                            'dcterms',
-                  'http://purl.org/rss/1.0/modules/email/':               'email',
-                  'http://purl.org/rss/1.0/modules/event/':               'ev',
-                  'http://rssnamespace.org/feedburner/ext/1.0':           'feedburner',
-                  'http://freshmeat.net/rss/fm/':                         'fm',
-                  'http://xmlns.com/foaf/0.1/':                           'foaf',
-                  'http://www.w3.org/2003/01/geo/wgs84_pos#':             'geo',
-                  'http://postneo.com/icbm/':                             'icbm',
-                  'http://purl.org/rss/1.0/modules/image/':               'image',
-                  'http://www.itunes.com/DTDs/PodCast-1.0.dtd':           'itunes',
-                  'http://example.com/DTDs/PodCast-1.0.dtd':              'itunes',
-                  'http://purl.org/rss/1.0/modules/link/':                'l',
-                  'http://search.yahoo.com/mrss':                         'media',
-                  'http://madskills.com/public/xml/rss/module/pingback/': 'pingback',
-                  'http://prismstandard.org/namespaces/1.2/basic/':       'prism',
-                  'http://www.w3.org/1999/02/22-rdf-syntax-ns#':          'rdf',
-                  'http://www.w3.org/2000/01/rdf-schema#':                'rdfs',
-                  'http://purl.org/rss/1.0/modules/reference/':           'ref',
-                  'http://purl.org/rss/1.0/modules/richequiv/':           'reqv',
-                  'http://purl.org/rss/1.0/modules/search/':              'search',
-                  'http://purl.org/rss/1.0/modules/slash/':               'slash',
-                  'http://schemas.xmlsoap.org/soap/envelope/':            'soap',
-                  'http://purl.org/rss/1.0/modules/servicestatus/':       'ss',
-                  'http://hacks.benhammersley.com/rss/streaming/':        'str',
-                  'http://purl.org/rss/1.0/modules/subscription/':        'sub',
-                  'http://purl.org/rss/1.0/modules/syndication/':         'sy',
-                  'http://purl.org/rss/1.0/modules/taxonomy/':            'taxo',
-                  'http://purl.org/rss/1.0/modules/threading/':           'thr',
-                  'http://purl.org/rss/1.0/modules/textinput/':           'ti',
-                  'http://madskills.com/public/xml/rss/module/trackback/':'trackback',
-                  'http://wellformedweb.org/commentAPI/':                 'wfw',
-                  'http://purl.org/rss/1.0/modules/wiki/':                'wiki',
-                  'http://www.w3.org/1999/xhtml':                         'xhtml',
-                  'http://www.w3.org/XML/1998/namespace':                 'xml',
-                  'http://schemas.pocketsoap.com/rss/myDescModule/':      'szf'
-}
-    _matchnamespaces = {}
-
-    can_be_relative_uri = ['link', 'id', 'wfw_comment', 'wfw_commentrss', 'docs', 'url', 'href', 'comments', 'license', 'icon', 'logo']
-    can_contain_relative_uris = ['content', 'title', 'summary', 'info', 'tagline', 'subtitle', 'copyright', 'rights', 'description']
-    can_contain_dangerous_markup = ['content', 'title', 'summary', 'info', 'tagline', 'subtitle', 'copyright', 'rights', 'description']
-    html_types = ['text/html', 'application/xhtml+xml']
-    
-    def __init__(self, baseuri=None, baselang=None, encoding='utf-8'):
-        if _debug: sys.stderr.write('initializing FeedParser\n')
-        if not self._matchnamespaces:
-            for k, v in self.namespaces.items():
-                self._matchnamespaces[k.lower()] = v
-        self.feeddata = FeedParserDict() # feed-level data
-        self.encoding = encoding # character encoding
-        self.entries = [] # list of entry-level data
-        self.version = '' # feed type/version, see SUPPORTED_VERSIONS
-        self.namespacesInUse = {} # dictionary of namespaces defined by the feed
-
-        # the following are used internally to track state;
-        # this is really out of control and should be refactored
-        self.infeed = 0
-        self.inentry = 0
-        self.incontent = 0
-        self.intextinput = 0
-        self.inimage = 0
-        self.inauthor = 0
-        self.incontributor = 0
-        self.inpublisher = 0
-        self.insource = 0
-        self.sourcedata = FeedParserDict()
-        self.contentparams = FeedParserDict()
-        self._summaryKey = None
-        self.namespacemap = {}
-        self.elementstack = []
-        self.basestack = []
-        self.langstack = []
-        self.baseuri = baseuri or ''
-        self.lang = baselang or None
-        if baselang:
-            self.feeddata['language'] = baselang
-
-    def unknown_starttag(self, tag, attrs):
-        if _debug: sys.stderr.write('start %s with %s\n' % (tag, attrs))
-        # normalize attrs
-        attrs = [(k.lower(), v) for k, v in attrs]
-        attrs = [(k, k in ('rel', 'type') and v.lower() or v) for k, v in attrs]
-        
-        # track xml:base and xml:lang
-        attrsD = dict(attrs)
-        baseuri = attrsD.get('xml:base', attrsD.get('base')) or self.baseuri
-        self.baseuri = _urljoin(self.baseuri, baseuri)
-        lang = attrsD.get('xml:lang', attrsD.get('lang'))
-        if lang == '':
-            # xml:lang could be explicitly set to '', we need to capture that
-            lang = None
-        elif lang is None:
-            # if no xml:lang is specified, use parent lang
-            lang = self.lang
-        if lang:
-            if tag in ('feed', 'rss', 'rdf:RDF'):
-                self.feeddata['language'] = lang
-        self.lang = lang
-        self.basestack.append(self.baseuri)
-        self.langstack.append(lang)
-        
-        # track namespaces
-        for prefix, uri in attrs:
-            if prefix.startswith('xmlns:'):
-                self.trackNamespace(prefix[6:], uri)
-            elif prefix == 'xmlns':
-                self.trackNamespace(None, uri)
-
-        # track inline content
-        if self.incontent and self.contentparams.has_key('type') and not self.contentparams.get('type', 'xml').endswith('xml'):
-            # element declared itself as escaped markup, but it isn't really
-            self.contentparams['type'] = 'application/xhtml+xml'
-        if self.incontent and self.contentparams.get('type') == 'application/xhtml+xml':
-            # Note: probably shouldn't simply recreate localname here, but
-            # our namespace handling isn't actually 100% correct in cases where
-            # the feed redefines the default namespace (which is actually
-            # the usual case for inline content, thanks Sam), so here we
-            # cheat and just reconstruct the element based on localname
-            # because that compensates for the bugs in our namespace handling.
-            # This will horribly munge inline content with non-empty qnames,
-            # but nobody actually does that, so I'm not fixing it.
-            tag = tag.split(':')[-1]
-            return self.handle_data('<%s%s>' % (tag, ''.join([' %s="%s"' % t for t in attrs])), escape=0)
-
-        # match namespaces
-        if tag.find(':') <> -1:
-            prefix, suffix = tag.split(':', 1)
-        else:
-            prefix, suffix = '', tag
-        prefix = self.namespacemap.get(prefix, prefix)
-        if prefix:
-            prefix = prefix + '_'
-
-        # special hack for better tracking of empty textinput/image elements in illformed feeds
-        if (not prefix) and tag not in ('title', 'link', 'description', 'name'):
-            self.intextinput = 0
-        if (not prefix) and tag not in ('title', 'link', 'description', 'url', 'href', 'width', 'height'):
-            self.inimage = 0
-        
-        # call special handler (if defined) or default handler
-        methodname = '_start_' + prefix + suffix
-        try:
-            method = getattr(self, methodname)
-            return method(attrsD)
-        except AttributeError:
-            return self.push(prefix + suffix, 1)
-
-    def unknown_endtag(self, tag):
-        if _debug: sys.stderr.write('end %s\n' % tag)
-        # match namespaces
-        if tag.find(':') <> -1:
-            prefix, suffix = tag.split(':', 1)
-        else:
-            prefix, suffix = '', tag
-        prefix = self.namespacemap.get(prefix, prefix)
-        if prefix:
-            prefix = prefix + '_'
-
-        # call special handler (if defined) or default handler
-        methodname = '_end_' + prefix + suffix
-        try:
-            method = getattr(self, methodname)
-            method()
-        except AttributeError:
-            self.pop(prefix + suffix)
-
-        # track inline content
-        if self.incontent and self.contentparams.has_key('type') and not self.contentparams.get('type', 'xml').endswith('xml'):
-            # element declared itself as escaped markup, but it isn't really
-            self.contentparams['type'] = 'application/xhtml+xml'
-        if self.incontent and self.contentparams.get('type') == 'application/xhtml+xml':
-            tag = tag.split(':')[-1]
-            self.handle_data('</%s>' % tag, escape=0)
-
-        # track xml:base and xml:lang going out of scope
-        if self.basestack:
-            self.basestack.pop()
-            if self.basestack and self.basestack[-1]:
-                self.baseuri = self.basestack[-1]
-        if self.langstack:
-            self.langstack.pop()
-            if self.langstack: # and (self.langstack[-1] is not None):
-                self.lang = self.langstack[-1]
-
-    def handle_charref(self, ref):
-        # called for each character reference, e.g. for '&#160;', ref will be '160'
-        if not self.elementstack: return
-        ref = ref.lower()
-        if ref in ('34', '38', '39', '60', '62', 'x22', 'x26', 'x27', 'x3c', 'x3e'):
-            text = '&#%s;' % ref
-        else:
-            if ref[0] == 'x':
-                c = int(ref[1:], 16)
-            else:
-                c = int(ref)
-            text = unichr(c).encode('utf-8')
-        self.elementstack[-1][2].append(text)
-
-    def handle_entityref(self, ref):
-        # called for each entity reference, e.g. for '&copy;', ref will be 'copy'
-        if not self.elementstack: return
-        if _debug: sys.stderr.write('entering handle_entityref with %s\n' % ref)
-        if ref in ('lt', 'gt', 'quot', 'amp', 'apos'):
-            text = '&%s;' % ref
-        else:
-            # entity resolution graciously donated by Aaron Swartz
-            def name2cp(k):
-                import htmlentitydefs
-                if hasattr(htmlentitydefs, 'name2codepoint'): # requires Python 2.3
-                    return htmlentitydefs.name2codepoint[k]
-                k = htmlentitydefs.entitydefs[k]
-                if k.startswith('&#') and k.endswith(';'):
-                    return int(k[2:-1]) # not in latin-1
-                return ord(k)
-            try: name2cp(ref)
-            except KeyError: text = '&%s;' % ref
-            else: text = unichr(name2cp(ref)).encode('utf-8')
-        self.elementstack[-1][2].append(text)
-
-    def handle_data(self, text, escape=1):
-        # called for each block of plain text, i.e. outside of any tag and
-        # not containing any character or entity references
-        if not self.elementstack: return
-        if escape and self.contentparams.get('type') == 'application/xhtml+xml':
-            text = _xmlescape(text)
-        self.elementstack[-1][2].append(text)
-
-    def handle_comment(self, text):
-        # called for each comment, e.g. <!-- insert message here -->
-        pass
-
-    def handle_pi(self, text):
-        # called for each processing instruction, e.g. <?instruction>
-        pass
-
-    def handle_decl(self, text):
-        pass
-
-    def parse_declaration(self, i):
-        # override internal declaration handler to handle CDATA blocks
-        if _debug: sys.stderr.write('entering parse_declaration\n')
-        if self.rawdata[i:i+9] == '<![CDATA[':
-            k = self.rawdata.find(']]>', i)
-            if k == -1: k = len(self.rawdata)
-            self.handle_data(_xmlescape(self.rawdata[i+9:k]), 0)
-            return k+3
-        else:
-            k = self.rawdata.find('>', i)
-            return k+1
-
-    def mapContentType(self, contentType):
-        contentType = contentType.lower()
-        if contentType == 'text':
-            contentType = 'text/plain'
-        elif contentType == 'html':
-            contentType = 'text/html'
-        elif contentType == 'xhtml':
-            contentType = 'application/xhtml+xml'
-        return contentType
-    
-    def trackNamespace(self, prefix, uri):
-        loweruri = uri.lower()
-        if (prefix, loweruri) == (None, 'http://my.netscape.com/rdf/simple/0.9/') and not self.version:
-            self.version = 'rss090'
-        if loweruri == 'http://purl.org/rss/1.0/' and not self.version:
-            self.version = 'rss10'
-        if loweruri == 'http://www.w3.org/2005/atom' and not self.version:
-            self.version = 'atom10'
-        if loweruri.find('backend.userland.com/rss') <> -1:
-            # match any backend.userland.com namespace
-            uri = 'http://backend.userland.com/rss'
-            loweruri = uri
-        if self._matchnamespaces.has_key(loweruri):
-            self.namespacemap[prefix] = self._matchnamespaces[loweruri]
-            self.namespacesInUse[self._matchnamespaces[loweruri]] = uri
-        else:
-            self.namespacesInUse[prefix or ''] = uri
-
-    def resolveURI(self, uri):
-        return _urljoin(self.baseuri or '', uri)
-    
-    def decodeEntities(self, element, data):
-        return data
-
-    def push(self, element, expectingText):
-        self.elementstack.append([element, expectingText, []])
-
-    def pop(self, element, stripWhitespace=1):
-        if not self.elementstack: return
-        if self.elementstack[-1][0] != element: return
-        
-        element, expectingText, pieces = self.elementstack.pop()
-        output = ''.join(pieces)
-        if stripWhitespace:
-            output = output.strip()
-        if not expectingText: return output
-
-        # decode base64 content
-        if base64 and self.contentparams.get('base64', 0):
-            try:
-                output = base64.decodestring(output)
-            except binascii.Error:
-                pass
-            except binascii.Incomplete:
-                pass
-                
-        # resolve relative URIs
-        if (element in self.can_be_relative_uri) and output:
-            output = self.resolveURI(output)
-        
-        # decode entities within embedded markup
-        if not self.contentparams.get('base64', 0):
-            output = self.decodeEntities(element, output)
-
-        # remove temporary cruft from contentparams
-        try:
-            del self.contentparams['mode']
-        except KeyError:
-            pass
-        try:
-            del self.contentparams['base64']
-        except KeyError:
-            pass
-
-        # resolve relative URIs within embedded markup
-        if self.mapContentType(self.contentparams.get('type', 'text/html')) in self.html_types:
-            if element in self.can_contain_relative_uris:
-                output = _resolveRelativeURIs(output, self.baseuri, self.encoding)
-        
-        # sanitize embedded markup
-        if self.mapContentType(self.contentparams.get('type', 'text/html')) in self.html_types:
-            if element in self.can_contain_dangerous_markup:
-                output = _sanitizeHTML(output, self.encoding)
-
-        if self.encoding and type(output) != type(u''):
-            try:
-                output = unicode(output, self.encoding)
-            except:
-                pass
-
-        # categories/tags/keywords/whatever are handled in _end_category
-        if element == 'category':
-            return output
-        
-        # store output in appropriate place(s)
-        if self.inentry and not self.insource:
-            if element == 'content':
-                self.entries[-1].setdefault(element, [])
-                contentparams = copy.deepcopy(self.contentparams)
-                contentparams['value'] = output
-                self.entries[-1][element].append(contentparams)
-            elif element == 'link':
-                self.entries[-1][element] = output
-                if output:
-                    self.entries[-1]['links'][-1]['href'] = output
-            else:
-                if element == 'description':
-                    element = 'summary'
-                self.entries[-1][element] = output
-                if self.incontent:
-                    contentparams = copy.deepcopy(self.contentparams)
-                    contentparams['value'] = output
-                    self.entries[-1][element + '_detail'] = contentparams
-        elif (self.infeed or self.insource) and (not self.intextinput) and (not self.inimage):
-            context = self._getContext()
-            if element == 'description':
-                element = 'subtitle'
-            context[element] = output
-            if element == 'link':
-                context['links'][-1]['href'] = output
-            elif self.incontent:
-                contentparams = copy.deepcopy(self.contentparams)
-                contentparams['value'] = output
-                context[element + '_detail'] = contentparams
-        return output
-
-    def pushContent(self, tag, attrsD, defaultContentType, expectingText):
-        self.incontent += 1
-        self.contentparams = FeedParserDict({
-            'type': self.mapContentType(attrsD.get('type', defaultContentType)),
-            'language': self.lang,
-            'base': self.baseuri})
-        self.contentparams['base64'] = self._isBase64(attrsD, self.contentparams)
-        self.push(tag, expectingText)
-
-    def popContent(self, tag):
-        value = self.pop(tag)
-        self.incontent -= 1
-        self.contentparams.clear()
-        return value
-        
-    def _mapToStandardPrefix(self, name):
-        colonpos = name.find(':')
-        if colonpos <> -1:
-            prefix = name[:colonpos]
-            suffix = name[colonpos+1:]
-            prefix = self.namespacemap.get(prefix, prefix)
-            name = prefix + ':' + suffix
-        return name
-        
-    def _getAttribute(self, attrsD, name):
-        return attrsD.get(self._mapToStandardPrefix(name))
-
-    def _isBase64(self, attrsD, contentparams):
-        if attrsD.get('mode', '') == 'base64':
-            return 1
-        if self.contentparams['type'].startswith('text/'):
-            return 0
-        if self.contentparams['type'].endswith('+xml'):
-            return 0
-        if self.contentparams['type'].endswith('/xml'):
-            return 0
-        return 1
-
-    def _itsAnHrefDamnIt(self, attrsD):
-        href = attrsD.get('url', attrsD.get('uri', attrsD.get('href', None)))
-        if href:
-            try:
-                del attrsD['url']
-            except KeyError:
-                pass
-            try:
-                del attrsD['uri']
-            except KeyError:
-                pass
-            attrsD['href'] = href
-        return attrsD
-    
-    def _save(self, key, value):
-        context = self._getContext()
-        context.setdefault(key, value)
-
-    def _start_rss(self, attrsD):
-        versionmap = {'0.91': 'rss091u',
-                      '0.92': 'rss092',
-                      '0.93': 'rss093',
-                      '0.94': 'rss094'}
-        if not self.version:
-            attr_version = attrsD.get('version', '')
-            version = versionmap.get(attr_version)
-            if version:
-                self.version = version
-            elif attr_version.startswith('2.'):
-                self.version = 'rss20'
-            else:
-                self.version = 'rss'
-    
-    def _start_dlhottitles(self, attrsD):
-        self.version = 'hotrss'
-
-    def _start_channel(self, attrsD):
-        self.infeed = 1
-        self._cdf_common(attrsD)
-    _start_feedinfo = _start_channel
-
-    def _cdf_common(self, attrsD):
-        if attrsD.has_key('lastmod'):
-            self._start_modified({})
-            self.elementstack[-1][-1] = attrsD['lastmod']
-            self._end_modified()
-        if attrsD.has_key('href'):
-            self._start_link({})
-            self.elementstack[-1][-1] = attrsD['href']
-            self._end_link()
-    
-    def _start_feed(self, attrsD):
-        self.infeed = 1
-        versionmap = {'0.1': 'atom01',
-                      '0.2': 'atom02',
-                      '0.3': 'atom03'}
-        if not self.version:
-            attr_version = attrsD.get('version')
-            version = versionmap.get(attr_version)
-            if version:
-                self.version = version
-            else:
-                self.version = 'atom'
-
-    def _end_channel(self):
-        self.infeed = 0
-    _end_feed = _end_channel
-    
-    def _start_image(self, attrsD):
-        self.inimage = 1
-        self.push('image', 0)
-        context = self._getContext()
-        context.setdefault('image', FeedParserDict())
-            
-    def _end_image(self):
-        self.pop('image')
-        self.inimage = 0
-
-    def _start_textinput(self, attrsD):
-        self.intextinput = 1
-        self.push('textinput', 0)
-        context = self._getContext()
-        context.setdefault('textinput', FeedParserDict())
-    _start_textInput = _start_textinput
-    
-    def _end_textinput(self):
-        self.pop('textinput')
-        self.intextinput = 0
-    _end_textInput = _end_textinput
-
-    def _start_author(self, attrsD):
-        self.inauthor = 1
-        self.push('author', 1)
-    _start_managingeditor = _start_author
-    _start_dc_author = _start_author
-    _start_dc_creator = _start_author
-    _start_itunes_author = _start_author
-
-    def _end_author(self):
-        self.pop('author')
-        self.inauthor = 0
-        self._sync_author_detail()
-    _end_managingeditor = _end_author
-    _end_dc_author = _end_author
-    _end_dc_creator = _end_author
-    _end_itunes_author = _end_author
-
-    def _start_itunes_owner(self, attrsD):
-        self.inpublisher = 1
-        self.push('publisher', 0)
-
-    def _end_itunes_owner(self):
-        self.pop('publisher')
-        self.inpublisher = 0
-        self._sync_author_detail('publisher')
-
-    def _start_contributor(self, attrsD):
-        self.incontributor = 1
-        context = self._getContext()
-        context.setdefault('contributors', [])
-        context['contributors'].append(FeedParserDict())
-        self.push('contributor', 0)
-
-    def _end_contributor(self):
-        self.pop('contributor')
-        self.incontributor = 0
-
-    def _start_dc_contributor(self, attrsD):
-        self.incontributor = 1
-        context = self._getContext()
-        context.setdefault('contributors', [])
-        context['contributors'].append(FeedParserDict())
-        self.push('name', 0)
-
-    def _end_dc_contributor(self):
-        self._end_name()
-        self.incontributor = 0
-
-    def _start_name(self, attrsD):
-        self.push('name', 0)
-    _start_itunes_name = _start_name
-
-    def _end_name(self):
-        value = self.pop('name')
-        if self.inpublisher:
-            self._save_author('name', value, 'publisher')
-        elif self.inauthor:
-            self._save_author('name', value)
-        elif self.incontributor:
-            self._save_contributor('name', value)
-        elif self.intextinput:
-            context = self._getContext()
-            context['textinput']['name'] = value
-    _end_itunes_name = _end_name
-
-    def _start_width(self, attrsD):
-        self.push('width', 0)
-
-    def _end_width(self):
-        value = self.pop('width')
-        try:
-            value = int(value)
-        except:
-            value = 0
-        if self.inimage:
-            context = self._getContext()
-            context['image']['width'] = value
-
-    def _start_height(self, attrsD):
-        self.push('height', 0)
-
-    def _end_height(self):
-        value = self.pop('height')
-        try:
-            value = int(value)
-        except:
-            value = 0
-        if self.inimage:
-            context = self._getContext()
-            context['image']['height'] = value
-
-    def _start_url(self, attrsD):
-        self.push('href', 1)
-    _start_homepage = _start_url
-    _start_uri = _start_url
-
-    def _end_url(self):
-        value = self.pop('href')
-        if self.inauthor:
-            self._save_author('href', value)
-        elif self.incontributor:
-            self._save_contributor('href', value)
-        elif self.inimage:
-            context = self._getContext()
-            context['image']['href'] = value
-        elif self.intextinput:
-            context = self._getContext()
-            context['textinput']['link'] = value
-    _end_homepage = _end_url
-    _end_uri = _end_url
-
-    def _start_email(self, attrsD):
-        self.push('email', 0)
-    _start_itunes_email = _start_email
-
-    def _end_email(self):
-        value = self.pop('email')
-        if self.inpublisher:
-            self._save_author('email', value, 'publisher')
-        elif self.inauthor:
-            self._save_author('email', value)
-        elif self.incontributor:
-            self._save_contributor('email', value)
-    _end_itunes_email = _end_email
-
-    def _getContext(self):
-        if self.insource:
-            context = self.sourcedata
-        elif self.inentry:
-            context = self.entries[-1]
-        else:
-            context = self.feeddata
-        return context
-
-    def _save_author(self, key, value, prefix='author'):
-        context = self._getContext()
-        context.setdefault(prefix + '_detail', FeedParserDict())
-        context[prefix + '_detail'][key] = value
-        self._sync_author_detail()
-
-    def _save_contributor(self, key, value):
-        context = self._getContext()
-        context.setdefault('contributors', [FeedParserDict()])
-        context['contributors'][-1][key] = value
-
-    def _sync_author_detail(self, key='author'):
-        context = self._getContext()
-        detail = context.get('%s_detail' % key)
-        if detail:
-            name = detail.get('name')
-            email = detail.get('email')
-            if name and email:
-                context[key] = '%s (%s)' % (name, email)
-            elif name:
-                context[key] = name
-            elif email:
-                context[key] = email
-        else:
-            author = context.get(key)
-            if not author: return
-            emailmatch = re.search(r'''(([a-zA-Z0-9\_\-\.\+]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?))''', author)
-            if not emailmatch: return
-            email = emailmatch.group(0)
-            # probably a better way to do the following, but it passes all the tests
-            author = author.replace(email, '')
-            author = author.replace('()', '')
-            author = author.strip()
-            if author and (author[0] == '('):
-                author = author[1:]
-            if author and (author[-1] == ')'):
-                author = author[:-1]
-            author = author.strip()
-            context.setdefault('%s_detail' % key, FeedParserDict())
-            context['%s_detail' % key]['name'] = author
-            context['%s_detail' % key]['email'] = email
-
-    def _start_subtitle(self, attrsD):
-        self.pushContent('subtitle', attrsD, 'text/plain', 1)
-    _start_tagline = _start_subtitle
-    _start_itunes_subtitle = _start_subtitle
-
-    def _end_subtitle(self):
-        self.popContent('subtitle')
-    _end_tagline = _end_subtitle
-    _end_itunes_subtitle = _end_subtitle
-            
-    def _start_rights(self, attrsD):
-        self.pushContent('rights', attrsD, 'text/plain', 1)
-    _start_dc_rights = _start_rights
-    _start_copyright = _start_rights
-
-    def _end_rights(self):
-        self.popContent('rights')
-    _end_dc_rights = _end_rights
-    _end_copyright = _end_rights
-
-    def _start_item(self, attrsD):
-        self.entries.append(FeedParserDict())
-        self.push('item', 0)
-        self.inentry = 1
-        self.guidislink = 0
-        id = self._getAttribute(attrsD, 'rdf:about')
-        if id:
-            context = self._getContext()
-            context['id'] = id
-        self._cdf_common(attrsD)
-    _start_entry = _start_item
-    _start_product = _start_item
-
-    def _end_item(self):
-        self.pop('item')
-        self.inentry = 0
-    _end_entry = _end_item
-
-    def _start_dc_language(self, attrsD):
-        self.push('language', 1)
-    _start_language = _start_dc_language
-
-    def _end_dc_language(self):
-        self.lang = self.pop('language')
-    _end_language = _end_dc_language
-
-    def _start_dc_publisher(self, attrsD):
-        self.push('publisher', 1)
-    _start_webmaster = _start_dc_publisher
-
-    def _end_dc_publisher(self):
-        self.pop('publisher')
-        self._sync_author_detail('publisher')
-    _end_webmaster = _end_dc_publisher
-
-    def _start_published(self, attrsD):
-        self.push('published', 1)
-    _start_dcterms_issued = _start_published
-    _start_issued = _start_published
-
-    def _end_published(self):
-        value = self.pop('published')
-        self._save('published_parsed', _parse_date(value))
-    _end_dcterms_issued = _end_published
-    _end_issued = _end_published
-
-    def _start_updated(self, attrsD):
-        self.push('updated', 1)
-    _start_modified = _start_updated
-    _start_dcterms_modified = _start_updated
-    _start_pubdate = _start_updated
-    _start_dc_date = _start_updated
-
-    def _end_updated(self):
-        value = self.pop('updated')
-        parsed_value = _parse_date(value)
-        self._save('updated_parsed', parsed_value)
-    _end_modified = _end_updated
-    _end_dcterms_modified = _end_updated
-    _end_pubdate = _end_updated
-    _end_dc_date = _end_updated
-
-    def _start_created(self, attrsD):
-        self.push('created', 1)
-    _start_dcterms_created = _start_created
-
-    def _end_created(self):
-        value = self.pop('created')
-        self._save('created_parsed', _parse_date(value))
-    _end_dcterms_created = _end_created
-
-    def _start_expirationdate(self, attrsD):
-        self.push('expired', 1)
-
-    def _end_expirationdate(self):
-        self._save('expired_parsed', _parse_date(self.pop('expired')))
-
-    def _start_cc_license(self, attrsD):
-        self.push('license', 1)
-        value = self._getAttribute(attrsD, 'rdf:resource')
-        if value:
-            self.elementstack[-1][2].append(value)
-        self.pop('license')
-        
-    def _start_creativecommons_license(self, attrsD):
-        self.push('license', 1)
-
-    def _end_creativecommons_license(self):
-        self.pop('license')
-
-    def _addTag(self, term, scheme, label):
-        context = self._getContext()
-        tags = context.setdefault('tags', [])
-        if (not term) and (not scheme) and (not label): return
-        value = FeedParserDict({'term': term, 'scheme': scheme, 'label': label})
-        if value not in tags:
-            tags.append(FeedParserDict({'term': term, 'scheme': scheme, 'label': label}))
-
-    def _start_category(self, attrsD):
-        if _debug: sys.stderr.write('entering _start_category with %s\n' % repr(attrsD))
-        term = attrsD.get('term')
-        scheme = attrsD.get('scheme', attrsD.get('domain'))
-        label = attrsD.get('label')
-        self._addTag(term, scheme, label)
-        self.push('category', 1)
-    _start_dc_subject = _start_category
-    _start_keywords = _start_category
-        
-    def _end_itunes_keywords(self):
-        for term in self.pop('itunes_keywords').split():
-            self._addTag(term, 'http://www.itunes.com/', None)
-        
-    def _start_itunes_category(self, attrsD):
-        self._addTag(attrsD.get('text'), 'http://www.itunes.com/', None)
-        self.push('category', 1)
-        
-    def _end_category(self):
-        value = self.pop('category')
-        if not value: return
-        context = self._getContext()
-        tags = context['tags']
-        if value and len(tags) and not tags[-1]['term']:
-            tags[-1]['term'] = value
-        else:
-            self._addTag(value, None, None)
-    _end_dc_subject = _end_category
-    _end_keywords = _end_category
-    _end_itunes_category = _end_category
-
-    def _start_cloud(self, attrsD):
-        self._getContext()['cloud'] = FeedParserDict(attrsD)
-        
-    def _start_link(self, attrsD):
-        attrsD.setdefault('rel', 'alternate')
-        attrsD.setdefault('type', 'text/html')
-        attrsD = self._itsAnHrefDamnIt(attrsD)
-        if attrsD.has_key('href'):
-            attrsD['href'] = self.resolveURI(attrsD['href'])
-        expectingText = self.infeed or self.inentry or self.insource
-        context = self._getContext()
-        context.setdefault('links', [])
-        context['links'].append(FeedParserDict(attrsD))
-        if attrsD['rel'] == 'enclosure':
-            self._start_enclosure(attrsD)
-        if attrsD.has_key('href'):
-            expectingText = 0
-            if (attrsD.get('rel') == 'alternate') and (self.mapContentType(attrsD.get('type')) in self.html_types):
-                context['link'] = attrsD['href']
-        else:
-            self.push('link', expectingText)
-    _start_producturl = _start_link
-
-    def _end_link(self):
-        value = self.pop('link')
-        context = self._getContext()
-        if self.intextinput:
-            context['textinput']['link'] = value
-        if self.inimage:
-            context['image']['link'] = value
-    _end_producturl = _end_link
-
-    def _start_guid(self, attrsD):
-        self.guidislink = (attrsD.get('ispermalink', 'true') == 'true')
-        self.push('id', 1)
-
-    def _end_guid(self):
-        value = self.pop('id')
-        self._save('guidislink', self.guidislink and not self._getContext().has_key('link'))
-        if self.guidislink:
-            # guid acts as link, but only if 'ispermalink' is not present or is 'true',
-            # and only if the item doesn't already have a link element
-            self._save('link', value)
-
-    def _start_title(self, attrsD):
-        self.pushContent('title', attrsD, 'text/plain', self.infeed or self.inentry or self.insource)
-    _start_dc_title = _start_title
-    _start_media_title = _start_title
-
-    def _end_title(self):
-        value = self.popContent('title')
-        context = self._getContext()
-        if self.intextinput:
-            context['textinput']['title'] = value
-        elif self.inimage:
-            context['image']['title'] = value
-    _end_dc_title = _end_title
-    _end_media_title = _end_title
-
-    def _start_description(self, attrsD):
-        context = self._getContext()
-        if context.has_key('summary'):
-            self._summaryKey = 'content'
-            self._start_content(attrsD)
-        else:
-            self.pushContent('description', attrsD, 'text/html', self.infeed or self.inentry or self.insource)
-
-    def _start_abstract(self, attrsD):
-        self.pushContent('description', attrsD, 'text/plain', self.infeed or self.inentry or self.insource)
-
-    def _end_description(self):
-        if self._summaryKey == 'content':
-            self._end_content()
-        else:
-            value = self.popContent('description')
-            context = self._getContext()
-            if self.intextinput:
-                context['textinput']['description'] = value
-            elif self.inimage:
-                context['image']['description'] = value
-        self._summaryKey = None
-    _end_abstract = _end_description
-
-    def _start_info(self, attrsD):
-        self.pushContent('info', attrsD, 'text/plain', 1)
-    _start_feedburner_browserfriendly = _start_info
-
-    def _end_info(self):
-        self.popContent('info')
-    _end_feedburner_browserfriendly = _end_info
-
-    def _start_generator(self, attrsD):
-        if attrsD:
-            attrsD = self._itsAnHrefDamnIt(attrsD)
-            if attrsD.has_key('href'):
-                attrsD['href'] = self.resolveURI(attrsD['href'])
-        self._getContext()['generator_detail'] = FeedParserDict(attrsD)
-        self.push('generator', 1)
-
-    def _end_generator(self):
-        value = self.pop('generator')
-        context = self._getContext()
-        if context.has_key('generator_detail'):
-            context['generator_detail']['name'] = value
-            
-    def _start_admin_generatoragent(self, attrsD):
-        self.push('generator', 1)
-        value = self._getAttribute(attrsD, 'rdf:resource')
-        if value:
-            self.elementstack[-1][2].append(value)
-        self.pop('generator')
-        self._getContext()['generator_detail'] = FeedParserDict({'href': value})
-
-    def _start_admin_errorreportsto(self, attrsD):
-        self.push('errorreportsto', 1)
-        value = self._getAttribute(attrsD, 'rdf:resource')
-        if value:
-            self.elementstack[-1][2].append(value)
-        self.pop('errorreportsto')
-        
-    def _start_summary(self, attrsD):
-        context = self._getContext()
-        if context.has_key('summary'):
-            self._summaryKey = 'content'
-            self._start_content(attrsD)
-        else:
-            self._summaryKey = 'summary'
-            self.pushContent(self._summaryKey, attrsD, 'text/plain', 1)
-    _start_itunes_summary = _start_summary
-
-    def _end_summary(self):
-        if self._summaryKey == 'content':
-            self._end_content()
-        else:
-            self.popContent(self._summaryKey or 'summary')
-        self._summaryKey = None
-    _end_itunes_summary = _end_summary
-        
-    def _start_enclosure(self, attrsD):
-        attrsD = self._itsAnHrefDamnIt(attrsD)
-        self._getContext().setdefault('enclosures', []).append(FeedParserDict(attrsD))
-        href = attrsD.get('href')
-        if href:
-            context = self._getContext()
-            if not context.get('id'):
-                context['id'] = href
-            
-    def _start_source(self, attrsD):
-        self.insource = 1
-
-    def _end_source(self):
-        self.insource = 0
-        self._getContext()['source'] = copy.deepcopy(self.sourcedata)
-        self.sourcedata.clear()
-
-    def _start_content(self, attrsD):
-        self.pushContent('content', attrsD, 'text/plain', 1)
-        src = attrsD.get('src')
-        if src:
-            self.contentparams['src'] = src
-        self.push('content', 1)
-
-    def _start_prodlink(self, attrsD):
-        self.pushContent('content', attrsD, 'text/html', 1)
-
-    def _start_body(self, attrsD):
-        self.pushContent('content', attrsD, 'application/xhtml+xml', 1)
-    _start_xhtml_body = _start_body
-
-    def _start_content_encoded(self, attrsD):
-        self.pushContent('content', attrsD, 'text/html', 1)
-    _start_fullitem = _start_content_encoded
-
-    def _end_content(self):
-        copyToDescription = self.mapContentType(self.contentparams.get('type')) in (['text/plain'] + self.html_types)
-        value = self.popContent('content')
-        if copyToDescription:
-            self._save('description', value)
-    _end_body = _end_content
-    _end_xhtml_body = _end_content
-    _end_content_encoded = _end_content
-    _end_fullitem = _end_content
-    _end_prodlink = _end_content
-
-    def _start_itunes_image(self, attrsD):
-        self.push('itunes_image', 0)
-        self._getContext()['image'] = FeedParserDict({'href': attrsD.get('href')})
-    _start_itunes_link = _start_itunes_image
-        
-    def _end_itunes_block(self):
-        value = self.pop('itunes_block', 0)
-        self._getContext()['itunes_block'] = (value == 'yes') and 1 or 0
-
-    def _end_itunes_explicit(self):
-        value = self.pop('itunes_explicit', 0)
-        self._getContext()['itunes_explicit'] = (value == 'yes') and 1 or 0
-
-if _XML_AVAILABLE:
-    class _StrictFeedParser(_FeedParserMixin, xml.sax.handler.ContentHandler):
-        def __init__(self, baseuri, baselang, encoding):
-            if _debug: sys.stderr.write('trying StrictFeedParser\n')
-            xml.sax.handler.ContentHandler.__init__(self)
-            _FeedParserMixin.__init__(self, baseuri, baselang, encoding)
-            self.bozo = 0
-            self.exc = None
-        
-        def startPrefixMapping(self, prefix, uri):
-            self.trackNamespace(prefix, uri)
-        
-        def startElementNS(self, name, qname, attrs):
-            namespace, localname = name
-            lowernamespace = str(namespace or '').lower()
-            if lowernamespace.find('backend.userland.com/rss') <> -1:
-                # match any backend.userland.com namespace
-                namespace = 'http://backend.userland.com/rss'
-                lowernamespace = namespace
-            if qname and qname.find(':') > 0:
-                givenprefix = qname.split(':')[0]
-            else:
-                givenprefix = None
-            prefix = self._matchnamespaces.get(lowernamespace, givenprefix)
-            if givenprefix and (prefix == None or (prefix == '' and lowernamespace == '')) and not self.namespacesInUse.has_key(givenprefix):
-                    raise UndeclaredNamespace, "'%s' is not associated with a namespace" % givenprefix
-            if prefix:
-                localname = prefix + ':' + localname
-            localname = str(localname).lower()
-            if _debug: sys.stderr.write('startElementNS: qname = %s, namespace = %s, givenprefix = %s, prefix = %s, attrs = %s, localname = %s\n' % (qname, namespace, givenprefix, prefix, attrs.items(), localname))
-
-            # qname implementation is horribly broken in Python 2.1 (it
-            # doesn't report any), and slightly broken in Python 2.2 (it
-            # doesn't report the xml: namespace). So we match up namespaces
-            # with a known list first, and then possibly override them with
-            # the qnames the SAX parser gives us (if indeed it gives us any
-            # at all).  Thanks to MatejC for helping me test this and
-            # tirelessly telling me that it didn't work yet.
-            attrsD = {}
-            for (namespace, attrlocalname), attrvalue in attrs._attrs.items():
-                lowernamespace = (namespace or '').lower()
-                prefix = self._matchnamespaces.get(lowernamespace, '')
-                if prefix:
-                    attrlocalname = prefix + ':' + attrlocalname
-                attrsD[str(attrlocalname).lower()] = attrvalue
-            for qname in attrs.getQNames():
-                attrsD[str(qname).lower()] = attrs.getValueByQName(qname)
-            self.unknown_starttag(localname, attrsD.items())
-
-        def characters(self, text):
-            self.handle_data(text)
-
-        def endElementNS(self, name, qname):
-            namespace, localname = name
-            lowernamespace = str(namespace or '').lower()
-            if qname and qname.find(':') > 0:
-                givenprefix = qname.split(':')[0]
-            else:
-                givenprefix = ''
-            prefix = self._matchnamespaces.get(lowernamespace, givenprefix)
-            if prefix:
-                localname = prefix + ':' + localname
-            localname = str(localname).lower()
-            self.unknown_endtag(localname)
-
-        def error(self, exc):
-            self.bozo = 1
-            self.exc = exc
-            
-        def fatalError(self, exc):
-            self.error(exc)
-            raise exc
-
-class _BaseHTMLProcessor(sgmllib.SGMLParser):
-    elements_no_end_tag = ['area', 'base', 'basefont', 'br', 'col', 'frame', 'hr',
-      'img', 'input', 'isindex', 'link', 'meta', 'param']
-    
-    def __init__(self, encoding):
-        self.encoding = encoding
-        if _debug: sys.stderr.write('entering BaseHTMLProcessor, encoding=%s\n' % self.encoding)
-        sgmllib.SGMLParser.__init__(self)
-        
-    def reset(self):
-        self.pieces = []
-        sgmllib.SGMLParser.reset(self)
-
-    def _shorttag_replace(self, match):
-        tag = match.group(1)
-        if tag in self.elements_no_end_tag:
-            return '<' + tag + ' />'
-        else:
-            return '<' + tag + '></' + tag + '>'
-        
-    def feed(self, data):
-        data = re.compile(r'<!((?!DOCTYPE|--|\[))', re.IGNORECASE).sub(r'&lt;!\1', data)
-        #data = re.sub(r'<(\S+?)\s*?/>', self._shorttag_replace, data) # bug [ 1399464 ] Bad regexp for _shorttag_replace
-        data = re.sub(r'<([^<\s]+?)\s*/>', self._shorttag_replace, data) 
-        data = data.replace('&#39;', "'")
-        data = data.replace('&#34;', '"')
-        if self.encoding and type(data) == type(u''):
-            data = data.encode(self.encoding)
-        sgmllib.SGMLParser.feed(self, data)
-
-    def normalize_attrs(self, attrs):
-        # utility method to be called by descendants
-        attrs = [(k.lower(), v) for k, v in attrs]
-        attrs = [(k, k in ('rel', 'type') and v.lower() or v) for k, v in attrs]
-        return attrs
-
-    def unknown_starttag(self, tag, attrs):
-        # called for each start tag
-        # attrs is a list of (attr, value) tuples
-        # e.g. for <pre class='screen'>, tag='pre', attrs=[('class', 'screen')]
-        if _debug: sys.stderr.write('_BaseHTMLProcessor, unknown_starttag, tag=%s\n' % tag)
-        uattrs = []
-        # thanks to Kevin Marks for this breathtaking hack to deal with (valid) high-bit attribute values in UTF-8 feeds
-        for key, value in attrs:
-            if type(value) != type(u''):
-                value = unicode(value, self.encoding)
-            uattrs.append((unicode(key, self.encoding), value))
-        strattrs = u''.join([u' %s="%s"' % (key, value) for key, value in uattrs]).encode(self.encoding)
-        if tag in self.elements_no_end_tag:
-            self.pieces.append('<%(tag)s%(strattrs)s />' % locals())
-        else:
-            self.pieces.append('<%(tag)s%(strattrs)s>' % locals())
-
-    def unknown_endtag(self, tag):
-        # called for each end tag, e.g. for </pre>, tag will be 'pre'
-        # Reconstruct the original end tag.
-        if tag not in self.elements_no_end_tag:
-            self.pieces.append("</%(tag)s>" % locals())
-
-    def handle_charref(self, ref):
-        # called for each character reference, e.g. for '&#160;', ref will be '160'
-        # Reconstruct the original character reference.
-        self.pieces.append('&#%(ref)s;' % locals())
-        
-    def handle_entityref(self, ref):
-        # called for each entity reference, e.g. for '&copy;', ref will be 'copy'
-        # Reconstruct the original entity reference.
-        self.pieces.append('&%(ref)s;' % locals())
-
-    def handle_data(self, text):
-        # called for each block of plain text, i.e. outside of any tag and
-        # not containing any character or entity references
-        # Store the original text verbatim.
-        if _debug: sys.stderr.write('_BaseHTMLProcessor, handle_text, text=%s\n' % text)
-        self.pieces.append(text)
-        
-    def handle_comment(self, text):
-        # called for each HTML comment, e.g. <!-- insert Javascript code here -->
-        # Reconstruct the original comment.
-        self.pieces.append('<!--%(text)s-->' % locals())
-        
-    def handle_pi(self, text):
-        # called for each processing instruction, e.g. <?instruction>
-        # Reconstruct original processing instruction.
-        self.pieces.append('<?%(text)s>' % locals())
-
-    def handle_decl(self, text):
-        # called for the DOCTYPE, if present, e.g.
-        # <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
-        #     "http://www.w3.org/TR/html4/loose.dtd">
-        # Reconstruct original DOCTYPE
-        self.pieces.append('<!%(text)s>' % locals())
-        
-    _new_declname_match = re.compile(r'[a-zA-Z][-_.a-zA-Z0-9:]*\s*').match
-    def _scan_name(self, i, declstartpos):
-        rawdata = self.rawdata
-        n = len(rawdata)
-        if i == n:
-            return None, -1
-        m = self._new_declname_match(rawdata, i)
-        if m:
-            s = m.group()
-            name = s.strip()
-            if (i + len(s)) == n:
-                return None, -1  # end of buffer
-            return name.lower(), m.end()
-        else:
-            self.handle_data(rawdata)
-#            self.updatepos(declstartpos, i)
-            return None, -1
-
-    def output(self):
-        '''Return processed HTML as a single string'''
-        return ''.join([str(p) for p in self.pieces])
-
-class _LooseFeedParser(_FeedParserMixin, _BaseHTMLProcessor):
-    def __init__(self, baseuri, baselang, encoding):
-        sgmllib.SGMLParser.__init__(self)
-        _FeedParserMixin.__init__(self, baseuri, baselang, encoding)
-
-    def decodeEntities(self, element, data):
-        data = data.replace('&#60;', '&lt;')
-        data = data.replace('&#x3c;', '&lt;')
-        data = data.replace('&#62;', '&gt;')
-        data = data.replace('&#x3e;', '&gt;')
-        data = data.replace('&#38;', '&amp;')
-        data = data.replace('&#x26;', '&amp;')
-        data = data.replace('&#34;', '&quot;')
-        data = data.replace('&#x22;', '&quot;')
-        data = data.replace('&#39;', '&apos;')
-        data = data.replace('&#x27;', '&apos;')
-        if self.contentparams.has_key('type') and not self.contentparams.get('type', 'xml').endswith('xml'):
-            data = data.replace('&lt;', '<')
-            data = data.replace('&gt;', '>')
-            data = data.replace('&amp;', '&')
-            data = data.replace('&quot;', '"')
-            data = data.replace('&apos;', "'")
-        return data
-        
-class _RelativeURIResolver(_BaseHTMLProcessor):
-    relative_uris = [('a', 'href'),
-                     ('applet', 'codebase'),
-                     ('area', 'href'),
-                     ('blockquote', 'cite'),
-                     ('body', 'background'),
-                     ('del', 'cite'),
-                     ('form', 'action'),
-                     ('frame', 'longdesc'),
-                     ('frame', 'src'),
-                     ('iframe', 'longdesc'),
-                     ('iframe', 'src'),
-                     ('head', 'profile'),
-                     ('img', 'longdesc'),
-                     ('img', 'src'),
-                     ('img', 'usemap'),
-                     ('input', 'src'),
-                     ('input', 'usemap'),
-                     ('ins', 'cite'),
-                     ('link', 'href'),
-                     ('object', 'classid'),
-                     ('object', 'codebase'),
-                     ('object', 'data'),
-                     ('object', 'usemap'),
-                     ('q', 'cite'),
-                     ('script', 'src')]
-
-    def __init__(self, baseuri, encoding):
-        _BaseHTMLProcessor.__init__(self, encoding)
-        self.baseuri = baseuri
-
-    def resolveURI(self, uri):
-        return _urljoin(self.baseuri, uri)
-    
-    def unknown_starttag(self, tag, attrs):
-        attrs = self.normalize_attrs(attrs)
-        attrs = [(key, ((tag, key) in self.relative_uris) and self.resolveURI(value) or value) for key, value in attrs]
-        _BaseHTMLProcessor.unknown_starttag(self, tag, attrs)
-        
-def _resolveRelativeURIs(htmlSource, baseURI, encoding):
-    if _debug: sys.stderr.write('entering _resolveRelativeURIs\n')
-    p = _RelativeURIResolver(baseURI, encoding)
-    p.feed(htmlSource)
-    return p.output()
-
-class _HTMLSanitizer(_BaseHTMLProcessor):
-    acceptable_elements = ['a', 'abbr', 'acronym', 'address', 'area', 'b', 'big',
-      'blockquote', 'br', 'button', 'caption', 'center', 'cite', 'code', 'col',
-      'colgroup', 'dd', 'del', 'dfn', 'dir', 'div', 'dl', 'dt', 'em', 'fieldset',
-      'font', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'hr', 'i', 'img', 'input',
-      'ins', 'kbd', 'label', 'legend', 'li', 'map', 'menu', 'ol', 'optgroup',
-      'option', 'p', 'pre', 'q', 's', 'samp', 'select', 'small', 'span', 'strike',
-      'strong', 'sub', 'sup', 'table', 'tbody', 'td', 'textarea', 'tfoot', 'th',
-      'thead', 'tr', 'tt', 'u', 'ul', 'var']
-
-    acceptable_attributes = ['abbr', 'accept', 'accept-charset', 'accesskey',
-      'action', 'align', 'alt', 'axis', 'border', 'cellpadding', 'cellspacing',
-      'char', 'charoff', 'charset', 'checked', 'cite', 'class', 'clear', 'cols',
-      'colspan', 'color', 'compact', 'coords', 'datetime', 'dir', 'disabled',
-      'enctype', 'for', 'frame', 'headers', 'height', 'href', 'hreflang', 'hspace',
-      'id', 'ismap', 'label', 'lang', 'longdesc', 'maxlength', 'media', 'method',
-      'multiple', 'name', 'nohref', 'noshade', 'nowrap', 'prompt', 'readonly',
-      'rel', 'rev', 'rows', 'rowspan', 'rules', 'scope', 'selected', 'shape', 'size',
-      'span', 'src', 'start', 'summary', 'tabindex', 'target', 'title', 'type',
-      'usemap', 'valign', 'value', 'vspace', 'width']
-
-    unacceptable_elements_with_end_tag = ['script', 'applet']
-
-    def reset(self):
-        _BaseHTMLProcessor.reset(self)
-        self.unacceptablestack = 0
-        
-    def unknown_starttag(self, tag, attrs):
-        if not tag in self.acceptable_elements:
-            if tag in self.unacceptable_elements_with_end_tag:
-                self.unacceptablestack += 1
-            return
-        attrs = self.normalize_attrs(attrs)
-        attrs = [(key, value) for key, value in attrs if key in self.acceptable_attributes]
-        _BaseHTMLProcessor.unknown_starttag(self, tag, attrs)
-        
-    def unknown_endtag(self, tag):
-        if not tag in self.acceptable_elements:
-            if tag in self.unacceptable_elements_with_end_tag:
-                self.unacceptablestack -= 1
-            return
-        _BaseHTMLProcessor.unknown_endtag(self, tag)
-
-    def handle_pi(self, text):
-        pass
-
-    def handle_decl(self, text):
-        pass
-
-    def handle_data(self, text):
-        if not self.unacceptablestack:
-            _BaseHTMLProcessor.handle_data(self, text)
-
-def _sanitizeHTML(htmlSource, encoding):
-    p = _HTMLSanitizer(encoding)
-    p.feed(htmlSource)
-    data = p.output()
-    if TIDY_MARKUP:
-        # loop through list of preferred Tidy interfaces looking for one that's installed,
-        # then set up a common _tidy function to wrap the interface-specific API.
-        _tidy = None
-        for tidy_interface in PREFERRED_TIDY_INTERFACES:
-            try:
-                if tidy_interface == "uTidy":
-                    from tidy import parseString as _utidy
-                    def _tidy(data, **kwargs):
-                        return str(_utidy(data, **kwargs))
-                    break
-                elif tidy_interface == "mxTidy":
-                    from mx.Tidy import Tidy as _mxtidy
-                    def _tidy(data, **kwargs):
-                        nerrors, nwarnings, data, errordata = _mxtidy.tidy(data, **kwargs)
-                        return data
-                    break
-            except:
-                pass
-        if _tidy:
-            utf8 = type(data) == type(u'')
-            if utf8:
-                data = data.encode('utf-8')
-            data = _tidy(data, output_xhtml=1, numeric_entities=1, wrap=0, char_encoding="utf8")
-            if utf8:
-                data = unicode(data, 'utf-8')
-            if data.count('<body'):
-                data = data.split('<body', 1)[1]
-                if data.count('>'):
-                    data = data.split('>', 1)[1]
-            if data.count('</body'):
-                data = data.split('</body', 1)[0]
-    data = data.strip().replace('\r\n', '\n')
-    return data
-
-class _FeedURLHandler(urllib2.HTTPDigestAuthHandler, urllib2.HTTPRedirectHandler, urllib2.HTTPDefaultErrorHandler):
-    def http_error_default(self, req, fp, code, msg, headers):
-        if ((code / 100) == 3) and (code != 304):
-            return self.http_error_302(req, fp, code, msg, headers)
-        infourl = urllib.addinfourl(fp, headers, req.get_full_url())
-        infourl.status = code
-        return infourl
-
-    def http_error_302(self, req, fp, code, msg, headers):
-        if headers.dict.has_key('location'):
-            infourl = urllib2.HTTPRedirectHandler.http_error_302(self, req, fp, code, msg, headers)
-        else:
-            infourl = urllib.addinfourl(fp, headers, req.get_full_url())
-        if not hasattr(infourl, 'status'):
-            infourl.status = code
-        return infourl
-
-    def http_error_301(self, req, fp, code, msg, headers):
-        if headers.dict.has_key('location'):
-            infourl = urllib2.HTTPRedirectHandler.http_error_301(self, req, fp, code, msg, headers)
-        else:
-            infourl = urllib.addinfourl(fp, headers, req.get_full_url())
-        if not hasattr(infourl, 'status'):
-            infourl.status = code
-        return infourl
-
-    http_error_300 = http_error_302
-    http_error_303 = http_error_302
-    http_error_307 = http_error_302
-        
-    def http_error_401(self, req, fp, code, msg, headers):
-        # Check if
-        # - server requires digest auth, AND
-        # - we tried (unsuccessfully) with basic auth, AND
-        # - we're using Python 2.3.3 or later (digest auth is irreparably broken in earlier versions)
-        # If all conditions hold, parse authentication information
-        # out of the Authorization header we sent the first time
-        # (for the username and password) and the WWW-Authenticate
-        # header the server sent back (for the realm) and retry
-        # the request with the appropriate digest auth headers instead.
-        # This evil genius hack has been brought to you by Aaron Swartz.
-        host = urlparse.urlparse(req.get_full_url())[1]
-        try:
-            assert sys.version.split()[0] >= '2.3.3'
-            assert base64 != None
-            user, passw = base64.decodestring(req.headers['Authorization'].split(' ')[1]).split(':')
-            realm = re.findall('realm="([^"]*)"', headers['WWW-Authenticate'])[0]
-            self.add_password(realm, host, user, passw)
-            retry = self.http_error_auth_reqed('www-authenticate', host, req, headers)
-            self.reset_retry_count()
-            return retry
-        except:
-            return self.http_error_default(req, fp, code, msg, headers)
-
-def _open_resource(url_file_stream_or_string, etag, modified, agent, referrer, handlers):
-    """URL, filename, or string --> stream
-
-    This function lets you define parsers that take any input source
-    (URL, pathname to local or network file, or actual data as a string)
-    and deal with it in a uniform manner.  Returned object is guaranteed
-    to have all the basic stdio read methods (read, readline, readlines).
-    Just .close() the object when you're done with it.
-
-    If the etag argument is supplied, it will be used as the value of an
-    If-None-Match request header.
-
-    If the modified argument is supplied, it must be a tuple of 9 integers
-    as returned by gmtime() in the standard Python time module. This MUST
-    be in GMT (Greenwich Mean Time). The formatted date/time will be used
-    as the value of an If-Modified-Since request header.
-
-    If the agent argument is supplied, it will be used as the value of a
-    User-Agent request header.
-
-    If the referrer argument is supplied, it will be used as the value of a
-    Referer[sic] request header.
-
-    If handlers is supplied, it is a list of handlers used to build a
-    urllib2 opener.
-    """
-
-    if hasattr(url_file_stream_or_string, 'read'):
-        return url_file_stream_or_string
-
-    if url_file_stream_or_string == '-':
-        return sys.stdin
-
-    if urlparse.urlparse(url_file_stream_or_string)[0] in ('http', 'https', 'ftp'):
-        if not agent:
-            agent = USER_AGENT
-        # test for inline user:password for basic auth
-        auth = None
-        if base64:
-            urltype, rest = urllib.splittype(url_file_stream_or_string)
-            realhost, rest = urllib.splithost(rest)
-            if realhost:
-                user_passwd, realhost = urllib.splituser(realhost)
-                if user_passwd:
-                    url_file_stream_or_string = '%s://%s%s' % (urltype, realhost, rest)
-                    auth = base64.encodestring(user_passwd).strip()
-        # try to open with urllib2 (to use optional headers)
-        request = urllib2.Request(url_file_stream_or_string)
-        request.add_header('User-Agent', agent)
-        if etag:
-            request.add_header('If-None-Match', etag)
-        if modified:
-            # format into an RFC 1123-compliant timestamp. We can't use
-            # time.strftime() since the %a and %b directives can be affected
-            # by the current locale, but RFC 2616 states that dates must be
-            # in English.
-            short_weekdays = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
-            months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
-            request.add_header('If-Modified-Since', '%s, %02d %s %04d %02d:%02d:%02d GMT' % (short_weekdays[modified[6]], modified[2], months[modified[1] - 1], modified[0], modified[3], modified[4], modified[5]))
-        if referrer:
-            request.add_header('Referer', referrer)
-        if gzip and zlib:
-            request.add_header('Accept-encoding', 'gzip, deflate')
-        elif gzip:
-            request.add_header('Accept-encoding', 'gzip')
-        elif zlib:
-            request.add_header('Accept-encoding', 'deflate')
-        else:
-            request.add_header('Accept-encoding', '')
-        if auth:
-            request.add_header('Authorization', 'Basic %s' % auth)
-        if ACCEPT_HEADER:
-            request.add_header('Accept', ACCEPT_HEADER)
-        request.add_header('A-IM', 'feed') # RFC 3229 support
-        opener = apply(urllib2.build_opener, tuple([_FeedURLHandler()] + handlers))
-        opener.addheaders = [] # RMK - must clear so we only send our custom User-Agent
-        try:
-            return opener.open(request)
-        finally:
-            opener.close() # JohnD
-    
-    # try to open with native open function (if url_file_stream_or_string is a filename)
-    try:
-        return open(url_file_stream_or_string)
-    except:
-        pass
-
-    # treat url_file_stream_or_string as string
-    return _StringIO(str(url_file_stream_or_string))
-
-_date_handlers = []
-def registerDateHandler(func):
-    '''Register a date handler function (takes string, returns 9-tuple date in GMT)'''
-    _date_handlers.insert(0, func)
-    
-# ISO-8601 date parsing routines written by Fazal Majid.
-# The ISO 8601 standard is very convoluted and irregular - a full ISO 8601
-# parser is beyond the scope of feedparser and would be a worthwhile addition
-# to the Python library.
-# A single regular expression cannot parse ISO 8601 date formats into groups
-# as the standard is highly irregular (for instance is 030104 2003-01-04 or
-# 0301-04-01), so we use templates instead.
-# Please note the order in templates is significant because we need a
-# greedy match.
-_iso8601_tmpl = ['YYYY-?MM-?DD', 'YYYY-MM', 'YYYY-?OOO',
-                'YY-?MM-?DD', 'YY-?OOO', 'YYYY', 
-                '-YY-?MM', '-OOO', '-YY',
-                '--MM-?DD', '--MM',
-                '---DD',
-                'CC', '']
-_iso8601_re = [
-    tmpl.replace(
-    'YYYY', r'(?P<year>\d{4})').replace(
-    'YY', r'(?P<year>\d\d)').replace(
-    'MM', r'(?P<month>[01]\d)').replace(
-    'DD', r'(?P<day>[0123]\d)').replace(
-    'OOO', r'(?P<ordinal>[0123]\d\d)').replace(
-    'CC', r'(?P<century>\d\d$)')
-    + r'(T?(?P<hour>\d{2}):(?P<minute>\d{2})'
-    + r'(:(?P<second>\d{2}))?'
-    + r'(?P<tz>[+-](?P<tzhour>\d{2})(:(?P<tzmin>\d{2}))?|Z)?)?'
-    for tmpl in _iso8601_tmpl]
-del tmpl
-_iso8601_matches = [re.compile(regex).match for regex in _iso8601_re]
-del regex
-def _parse_date_iso8601(dateString):
-    '''Parse a variety of ISO-8601-compatible formats like 20040105'''
-    m = None
-    for _iso8601_match in _iso8601_matches:
-        m = _iso8601_match(dateString)
-        if m: break
-    if not m: return
-    if m.span() == (0, 0): return
-    params = m.groupdict()
-    ordinal = params.get('ordinal', 0)
-    if ordinal:
-        ordinal = int(ordinal)
-    else:
-        ordinal = 0
-    year = params.get('year', '--')
-    if not year or year == '--':
-        year = time.gmtime()[0]
-    elif len(year) == 2:
-        # ISO 8601 assumes current century, i.e. 93 -> 2093, NOT 1993
-        year = 100 * int(time.gmtime()[0] / 100) + int(year)
-    else:
-        year = int(year)
-    month = params.get('month', '-')
-    if not month or month == '-':
-        # ordinals are NOT normalized by mktime, we simulate them
-        # by setting month=1, day=ordinal
-        if ordinal:
-            month = 1
-        else:
-            month = time.gmtime()[1]
-    month = int(month)
-    day = params.get('day', 0)
-    if not day:
-        # see above
-        if ordinal:
-            day = ordinal
-        elif params.get('century', 0) or \
-                 params.get('year', 0) or params.get('month', 0):
-            day = 1
-        else:
-            day = time.gmtime()[2]
-    else:
-        day = int(day)
-    # special case of the century - is the first year of the 21st century
-    # 2000 or 2001 ? The debate goes on...
-    if 'century' in params.keys():
-        year = (int(params['century']) - 1) * 100 + 1
-    # in ISO 8601 most fields are optional
-    for field in ['hour', 'minute', 'second', 'tzhour', 'tzmin']:
-        if not params.get(field, None):
-            params[field] = 0
-    hour = int(params.get('hour', 0))
-    minute = int(params.get('minute', 0))
-    second = int(params.get('second', 0))
-    # weekday is normalized by mktime(), we can ignore it
-    weekday = 0
-    # daylight savings is complex, but not needed for feedparser's purposes
-    # as time zones, if specified, include mention of whether it is active
-    # (e.g. PST vs. PDT, CET). Using -1 is implementation-dependent and
-    # and most implementations have DST bugs
-    daylight_savings_flag = 0
-    tm = [year, month, day, hour, minute, second, weekday,
-          ordinal, daylight_savings_flag]
-    # ISO 8601 time zone adjustments
-    tz = params.get('tz')
-    if tz and tz != 'Z':
-        if tz[0] == '-':
-            tm[3] += int(params.get('tzhour', 0))
-            tm[4] += int(params.get('tzmin', 0))
-        elif tz[0] == '+':
-            tm[3] -= int(params.get('tzhour', 0))
-            tm[4] -= int(params.get('tzmin', 0))
-        else:
-            return None
-    # Python's time.mktime() is a wrapper around the ANSI C mktime(3c)
-    # which is guaranteed to normalize d/m/y/h/m/s.
-    # Many implementations have bugs, but we'll pretend they don't.
-    return time.localtime(time.mktime(tm))
-registerDateHandler(_parse_date_iso8601)
-    
-# 8-bit date handling routines written by ytrewq1.
-_korean_year  = u'\ub144' # b3e2 in euc-kr
-_korean_month = u'\uc6d4' # bff9 in euc-kr
-_korean_day   = u'\uc77c' # c0cf in euc-kr
-_korean_am    = u'\uc624\uc804' # bfc0 c0fc in euc-kr
-_korean_pm    = u'\uc624\ud6c4' # bfc0 c8c4 in euc-kr
-
-_korean_onblog_date_re = \
-    re.compile('(\d{4})%s\s+(\d{2})%s\s+(\d{2})%s\s+(\d{2}):(\d{2}):(\d{2})' % \
-               (_korean_year, _korean_month, _korean_day))
-_korean_nate_date_re = \
-    re.compile(u'(\d{4})-(\d{2})-(\d{2})\s+(%s|%s)\s+(\d{,2}):(\d{,2}):(\d{,2})' % \
-               (_korean_am, _korean_pm))
-def _parse_date_onblog(dateString):
-    '''Parse a string according to the OnBlog 8-bit date format'''
-    m = _korean_onblog_date_re.match(dateString)
-    if not m: return
-    w3dtfdate = '%(year)s-%(month)s-%(day)sT%(hour)s:%(minute)s:%(second)s%(zonediff)s' % \
-                {'year': m.group(1), 'month': m.group(2), 'day': m.group(3),\
-                 'hour': m.group(4), 'minute': m.group(5), 'second': m.group(6),\
-                 'zonediff': '+09:00'}
-    if _debug: sys.stderr.write('OnBlog date parsed as: %s\n' % w3dtfdate)
-    return _parse_date_w3dtf(w3dtfdate)
-registerDateHandler(_parse_date_onblog)
-
-def _parse_date_nate(dateString):
-    '''Parse a string according to the Nate 8-bit date format'''
-    m = _korean_nate_date_re.match(dateString)
-    if not m: return
-    hour = int(m.group(5))
-    ampm = m.group(4)
-    if (ampm == _korean_pm):
-        hour += 12
-    hour = str(hour)
-    if len(hour) == 1:
-        hour = '0' + hour
-    w3dtfdate = '%(year)s-%(month)s-%(day)sT%(hour)s:%(minute)s:%(second)s%(zonediff)s' % \
-                {'year': m.group(1), 'month': m.group(2), 'day': m.group(3),\
-                 'hour': hour, 'minute': m.group(6), 'second': m.group(7),\
-                 'zonediff': '+09:00'}
-    if _debug: sys.stderr.write('Nate date parsed as: %s\n' % w3dtfdate)
-    return _parse_date_w3dtf(w3dtfdate)
-registerDateHandler(_parse_date_nate)
-
-_mssql_date_re = \
-    re.compile('(\d{4})-(\d{2})-(\d{2})\s+(\d{2}):(\d{2}):(\d{2})(\.\d+)?')
-def _parse_date_mssql(dateString):
-    '''Parse a string according to the MS SQL date format'''
-    m = _mssql_date_re.match(dateString)
-    if not m: return
-    w3dtfdate = '%(year)s-%(month)s-%(day)sT%(hour)s:%(minute)s:%(second)s%(zonediff)s' % \
-                {'year': m.group(1), 'month': m.group(2), 'day': m.group(3),\
-                 'hour': m.group(4), 'minute': m.group(5), 'second': m.group(6),\
-                 'zonediff': '+09:00'}
-    if _debug: sys.stderr.write('MS SQL date parsed as: %s\n' % w3dtfdate)
-    return _parse_date_w3dtf(w3dtfdate)
-registerDateHandler(_parse_date_mssql)
-
-# Unicode strings for Greek date strings
-_greek_months = \
-  { \
-   u'\u0399\u03b1\u03bd': u'Jan',       # c9e1ed in iso-8859-7
-   u'\u03a6\u03b5\u03b2': u'Feb',       # d6e5e2 in iso-8859-7
-   u'\u039c\u03ac\u03ce': u'Mar',       # ccdcfe in iso-8859-7
-   u'\u039c\u03b1\u03ce': u'Mar',       # cce1fe in iso-8859-7
-   u'\u0391\u03c0\u03c1': u'Apr',       # c1f0f1 in iso-8859-7
-   u'\u039c\u03ac\u03b9': u'May',       # ccdce9 in iso-8859-7
-   u'\u039c\u03b1\u03ca': u'May',       # cce1fa in iso-8859-7
-   u'\u039c\u03b1\u03b9': u'May',       # cce1e9 in iso-8859-7
-   u'\u0399\u03bf\u03cd\u03bd': u'Jun', # c9effded in iso-8859-7
-   u'\u0399\u03bf\u03bd': u'Jun',       # c9efed in iso-8859-7
-   u'\u0399\u03bf\u03cd\u03bb': u'Jul', # c9effdeb in iso-8859-7
-   u'\u0399\u03bf\u03bb': u'Jul',       # c9f9eb in iso-8859-7
-   u'\u0391\u03cd\u03b3': u'Aug',       # c1fde3 in iso-8859-7
-   u'\u0391\u03c5\u03b3': u'Aug',       # c1f5e3 in iso-8859-7
-   u'\u03a3\u03b5\u03c0': u'Sep',       # d3e5f0 in iso-8859-7
-   u'\u039f\u03ba\u03c4': u'Oct',       # cfeaf4 in iso-8859-7
-   u'\u039d\u03bf\u03ad': u'Nov',       # cdefdd in iso-8859-7
-   u'\u039d\u03bf\u03b5': u'Nov',       # cdefe5 in iso-8859-7
-   u'\u0394\u03b5\u03ba': u'Dec',       # c4e5ea in iso-8859-7
-  }
-
-_greek_wdays = \
-  { \
-   u'\u039a\u03c5\u03c1': u'Sun', # caf5f1 in iso-8859-7
-   u'\u0394\u03b5\u03c5': u'Mon', # c4e5f5 in iso-8859-7
-   u'\u03a4\u03c1\u03b9': u'Tue', # d4f1e9 in iso-8859-7
-   u'\u03a4\u03b5\u03c4': u'Wed', # d4e5f4 in iso-8859-7
-   u'\u03a0\u03b5\u03bc': u'Thu', # d0e5ec in iso-8859-7
-   u'\u03a0\u03b1\u03c1': u'Fri', # d0e1f1 in iso-8859-7
-   u'\u03a3\u03b1\u03b2': u'Sat', # d3e1e2 in iso-8859-7   
-  }
-
-_greek_date_format_re = \
-    re.compile(u'([^,]+),\s+(\d{2})\s+([^\s]+)\s+(\d{4})\s+(\d{2}):(\d{2}):(\d{2})\s+([^\s]+)')
-
-def _parse_date_greek(dateString):
-    '''Parse a string according to a Greek 8-bit date format.'''
-    m = _greek_date_format_re.match(dateString)
-    if not m: return
-    try:
-        wday = _greek_wdays[m.group(1)]
-        month = _greek_months[m.group(3)]
-    except:
-        return
-    rfc822date = '%(wday)s, %(day)s %(month)s %(year)s %(hour)s:%(minute)s:%(second)s %(zonediff)s' % \
-                 {'wday': wday, 'day': m.group(2), 'month': month, 'year': m.group(4),\
-                  'hour': m.group(5), 'minute': m.group(6), 'second': m.group(7),\
-                  'zonediff': m.group(8)}
-    if _debug: sys.stderr.write('Greek date parsed as: %s\n' % rfc822date)
-    return _parse_date_rfc822(rfc822date)
-registerDateHandler(_parse_date_greek)
-
-# Unicode strings for Hungarian date strings
-_hungarian_months = \
-  { \
-    u'janu\u00e1r':   u'01',  # e1 in iso-8859-2
-    u'febru\u00e1ri': u'02',  # e1 in iso-8859-2
-    u'm\u00e1rcius':  u'03',  # e1 in iso-8859-2
-    u'\u00e1prilis':  u'04',  # e1 in iso-8859-2
-    u'm\u00e1ujus':   u'05',  # e1 in iso-8859-2
-    u'j\u00fanius':   u'06',  # fa in iso-8859-2
-    u'j\u00falius':   u'07',  # fa in iso-8859-2
-    u'augusztus':     u'08',
-    u'szeptember':    u'09',
-    u'okt\u00f3ber':  u'10',  # f3 in iso-8859-2
-    u'november':      u'11',
-    u'december':      u'12',
-  }
-
-_hungarian_date_format_re = \
-  re.compile(u'(\d{4})-([^-]+)-(\d{,2})T(\d{,2}):(\d{2})((\+|-)(\d{,2}:\d{2}))')
-
-def _parse_date_hungarian(dateString):
-    '''Parse a string according to a Hungarian 8-bit date format.'''
-    m = _hungarian_date_format_re.match(dateString)
-    if not m: return
-    try:
-        month = _hungarian_months[m.group(2)]
-        day = m.group(3)
-        if len(day) == 1:
-            day = '0' + day
-        hour = m.group(4)
-        if len(hour) == 1:
-            hour = '0' + hour
-    except:
-        return
-    w3dtfdate = '%(year)s-%(month)s-%(day)sT%(hour)s:%(minute)s%(zonediff)s' % \
-                {'year': m.group(1), 'month': month, 'day': day,\
-                 'hour': hour, 'minute': m.group(5),\
-                 'zonediff': m.group(6)}
-    if _debug: sys.stderr.write('Hungarian date parsed as: %s\n' % w3dtfdate)
-    return _parse_date_w3dtf(w3dtfdate)
-registerDateHandler(_parse_date_hungarian)
-
-# W3DTF-style date parsing adapted from PyXML xml.utils.iso8601, written by
-# Drake and licensed under the Python license.  Removed all range checking
-# for month, day, hour, minute, and second, since mktime will normalize
-# these later
-def _parse_date_w3dtf(dateString):
-    def __extract_date(m):
-        year = int(m.group('year'))
-        if year < 100:
-            year = 100 * int(time.gmtime()[0] / 100) + int(year)
-        if year < 1000:
-            return 0, 0, 0
-        julian = m.group('julian')
-        if julian:
-            julian = int(julian)
-            month = julian / 30 + 1
-            day = julian % 30 + 1
-            jday = None
-            while jday != julian:
-                t = time.mktime((year, month, day, 0, 0, 0, 0, 0, 0))
-                jday = time.gmtime(t)[-2]
-                diff = abs(jday - julian)
-                if jday > julian:
-                    if diff < day:
-                        day = day - diff
-                    else:
-                        month = month - 1
-                        day = 31
-                elif jday < julian:
-                    if day + diff < 28:
-                       day = day + diff
-                    else:
-                        month = month + 1
-            return year, month, day
-        month = m.group('month')
-        day = 1
-        if month is None:
-            month = 1
-        else:
-            month = int(month)
-            day = m.group('day')
-            if day:
-                day = int(day)
-            else:
-                day = 1
-        return year, month, day
-
-    def __extract_time(m):
-        if not m:
-            return 0, 0, 0
-        hours = m.group('hours')
-        if not hours:
-            return 0, 0, 0
-        hours = int(hours)
-        minutes = int(m.group('minutes'))
-        seconds = m.group('seconds')
-        if seconds:
-            seconds = int(seconds)
-        else:
-            seconds = 0
-        return hours, minutes, seconds
-
-    def __extract_tzd(m):
-        '''Return the Time Zone Designator as an offset in seconds from UTC.'''
-        if not m:
-            return 0
-        tzd = m.group('tzd')
-        if not tzd:
-            return 0
-        if tzd == 'Z':
-            return 0
-        hours = int(m.group('tzdhours'))
-        minutes = m.group('tzdminutes')
-        if minutes:
-            minutes = int(minutes)
-        else:
-            minutes = 0
-        offset = (hours*60 + minutes) * 60
-        if tzd[0] == '+':
-            return -offset
-        return offset
-
-    __date_re = ('(?P<year>\d\d\d\d)'
-                 '(?:(?P<dsep>-|)'
-                 '(?:(?P<julian>\d\d\d)'
-                 '|(?P<month>\d\d)(?:(?P=dsep)(?P<day>\d\d))?))?')
-    __tzd_re = '(?P<tzd>[-+](?P<tzdhours>\d\d)(?::?(?P<tzdminutes>\d\d))|Z)'
-    __tzd_rx = re.compile(__tzd_re)
-    __time_re = ('(?P<hours>\d\d)(?P<tsep>:|)(?P<minutes>\d\d)'
-                 '(?:(?P=tsep)(?P<seconds>\d\d(?:[.,]\d+)?))?'
-                 + __tzd_re)
-    __datetime_re = '%s(?:T%s)?' % (__date_re, __time_re)
-    __datetime_rx = re.compile(__datetime_re)
-    m = __datetime_rx.match(dateString)
-    if (m is None) or (m.group() != dateString): return
-    gmt = __extract_date(m) + __extract_time(m) + (0, 0, 0)
-    if gmt[0] == 0: return
-    return time.gmtime(time.mktime(gmt) + __extract_tzd(m) - time.timezone)
-registerDateHandler(_parse_date_w3dtf)
-
-def _parse_date_rfc822(dateString):
-    '''Parse an RFC822, RFC1123, RFC2822, or asctime-style date'''
-    data = dateString.split()
-    if data[0][-1] in (',', '.') or data[0].lower() in rfc822._daynames:
-        del data[0]
-    if len(data) == 4:
-        s = data[3]
-        i = s.find('+')
-        if i > 0:
-            data[3:] = [s[:i], s[i+1:]]
-        else:
-            data.append('')
-        dateString = " ".join(data)
-    if len(data) < 5:
-        dateString += ' 00:00:00 GMT'
-    tm = rfc822.parsedate_tz(dateString)
-    if tm:
-        return time.gmtime(rfc822.mktime_tz(tm))
-# rfc822.py defines several time zones, but we define some extra ones.
-# 'ET' is equivalent to 'EST', etc.
-_additional_timezones = {'AT': -400, 'ET': -500, 'CT': -600, 'MT': -700, 'PT': -800}
-rfc822._timezones.update(_additional_timezones)
-registerDateHandler(_parse_date_rfc822)    
-
-def _parse_date(dateString):
-    '''Parses a variety of date formats into a 9-tuple in GMT'''
-    for handler in _date_handlers:
-        try:
-            date9tuple = handler(dateString)
-            if not date9tuple: continue
-            if len(date9tuple) != 9:
-                if _debug: sys.stderr.write('date handler function must return 9-tuple\n')
-                raise ValueError
-            map(int, date9tuple)
-            return date9tuple
-        except Exception, e:
-            if _debug: sys.stderr.write('%s raised %s\n' % (handler.__name__, repr(e)))
-            pass
-    return None
-
-def _getCharacterEncoding(http_headers, xml_data):
-    '''Get the character encoding of the XML document
-
-    http_headers is a dictionary
-    xml_data is a raw string (not Unicode)
-    
-    This is so much trickier than it sounds, it's not even funny.
-    According to RFC 3023 ('XML Media Types'), if the HTTP Content-Type
-    is application/xml, application/*+xml,
-    application/xml-external-parsed-entity, or application/xml-dtd,
-    the encoding given in the charset parameter of the HTTP Content-Type
-    takes precedence over the encoding given in the XML prefix within the
-    document, and defaults to 'utf-8' if neither are specified.  But, if
-    the HTTP Content-Type is text/xml, text/*+xml, or
-    text/xml-external-parsed-entity, the encoding given in the XML prefix
-    within the document is ALWAYS IGNORED and only the encoding given in
-    the charset parameter of the HTTP Content-Type header should be
-    respected, and it defaults to 'us-ascii' if not specified.
-
-    Furthermore, discussion on the atom-syntax mailing list with the
-    author of RFC 3023 leads me to the conclusion that any document
-    served with a Content-Type of text/* and no charset parameter
-    must be treated as us-ascii.  (We now do this.)  And also that it
-    must always be flagged as non-well-formed.  (We now do this too.)
-    
-    If Content-Type is unspecified (input was local file or non-HTTP source)
-    or unrecognized (server just got it totally wrong), then go by the
-    encoding given in the XML prefix of the document and default to
-    'iso-8859-1' as per the HTTP specification (RFC 2616).
-    
-    Then, assuming we didn't find a character encoding in the HTTP headers
-    (and the HTTP Content-type allowed us to look in the body), we need
-    to sniff the first few bytes of the XML data and try to determine
-    whether the encoding is ASCII-compatible.  Section F of the XML
-    specification shows the way here:
-    http://www.w3.org/TR/REC-xml/#sec-guessing-no-ext-info
-
-    If the sniffed encoding is not ASCII-compatible, we need to make it
-    ASCII compatible so that we can sniff further into the XML declaration
-    to find the encoding attribute, which will tell us the true encoding.
-
-    Of course, none of this guarantees that we will be able to parse the
-    feed in the declared character encoding (assuming it was declared
-    correctly, which many are not).  CJKCodecs and iconv_codec help a lot;
-    you should definitely install them if you can.
-    http://cjkpython.i18n.org/
-    '''
-
-    def _parseHTTPContentType(content_type):
-        '''takes HTTP Content-Type header and returns (content type, charset)
-
-        If no charset is specified, returns (content type, '')
-        If no content type is specified, returns ('', '')
-        Both return parameters are guaranteed to be lowercase strings
-        '''
-        content_type = content_type or ''
-        content_type, params = cgi.parse_header(content_type)
-        return content_type, params.get('charset', '').replace("'", '')
-
-    sniffed_xml_encoding = ''
-    xml_encoding = ''
-    true_encoding = ''
-    http_content_type, http_encoding = _parseHTTPContentType(http_headers.get('content-type'))
-    # Must sniff for non-ASCII-compatible character encodings before
-    # searching for XML declaration.  This heuristic is defined in
-    # section F of the XML specification:
-    # http://www.w3.org/TR/REC-xml/#sec-guessing-no-ext-info
-    try:
-        if xml_data[:4] == '\x4c\x6f\xa7\x94':
-            # EBCDIC
-            xml_data = _ebcdic_to_ascii(xml_data)
-        elif xml_data[:4] == '\x00\x3c\x00\x3f':
-            # UTF-16BE
-            sniffed_xml_encoding = 'utf-16be'
-            xml_data = unicode(xml_data, 'utf-16be').encode('utf-8')
-        elif (len(xml_data) >= 4) and (xml_data[:2] == '\xfe\xff') and (xml_data[2:4] != '\x00\x00'):
-            # UTF-16BE with BOM
-            sniffed_xml_encoding = 'utf-16be'
-            xml_data = unicode(xml_data[2:], 'utf-16be').encode('utf-8')
-        elif xml_data[:4] == '\x3c\x00\x3f\x00':
-            # UTF-16LE
-            sniffed_xml_encoding = 'utf-16le'
-            xml_data = unicode(xml_data, 'utf-16le').encode('utf-8')
-        elif (len(xml_data) >= 4) and (xml_data[:2] == '\xff\xfe') and (xml_data[2:4] != '\x00\x00'):
-            # UTF-16LE with BOM
-            sniffed_xml_encoding = 'utf-16le'
-            xml_data = unicode(xml_data[2:], 'utf-16le').encode('utf-8')
-        elif xml_data[:4] == '\x00\x00\x00\x3c':
-            # UTF-32BE
-            sniffed_xml_encoding = 'utf-32be'
-            xml_data = unicode(xml_data, 'utf-32be').encode('utf-8')
-        elif xml_data[:4] == '\x3c\x00\x00\x00':
-            # UTF-32LE
-            sniffed_xml_encoding = 'utf-32le'
-            xml_data = unicode(xml_data, 'utf-32le').encode('utf-8')
-        elif xml_data[:4] == '\x00\x00\xfe\xff':
-            # UTF-32BE with BOM
-            sniffed_xml_encoding = 'utf-32be'
-            xml_data = unicode(xml_data[4:], 'utf-32be').encode('utf-8')
-        elif xml_data[:4] == '\xff\xfe\x00\x00':
-            # UTF-32LE with BOM
-            sniffed_xml_encoding = 'utf-32le'
-            xml_data = unicode(xml_data[4:], 'utf-32le').encode('utf-8')
-        elif xml_data[:3] == '\xef\xbb\xbf':
-            # UTF-8 with BOM
-            sniffed_xml_encoding = 'utf-8'
-            xml_data = unicode(xml_data[3:], 'utf-8').encode('utf-8')
-        else:
-            # ASCII-compatible
-            pass
-        xml_encoding_match = re.compile('^<\?.*encoding=[\'"](.*?)[\'"].*\?>').match(xml_data)
-    except:
-        xml_encoding_match = None
-    if xml_encoding_match:
-        xml_encoding = xml_encoding_match.groups()[0].lower()
-        if sniffed_xml_encoding and (xml_encoding in ('iso-10646-ucs-2', 'ucs-2', 'csunicode', 'iso-10646-ucs-4', 'ucs-4', 'csucs4', 'utf-16', 'utf-32', 'utf_16', 'utf_32', 'utf16', 'u16')):
-            xml_encoding = sniffed_xml_encoding
-    acceptable_content_type = 0
-    application_content_types = ('application/xml', 'application/xml-dtd', 'application/xml-external-parsed-entity')
-    text_content_types = ('text/xml', 'text/xml-external-parsed-entity')
-    if (http_content_type in application_content_types) or \
-       (http_content_type.startswith('application/') and http_content_type.endswith('+xml')):
-        acceptable_content_type = 1
-        true_encoding = http_encoding or xml_encoding or 'utf-8'
-    elif (http_content_type in text_content_types) or \
-         (http_content_type.startswith('text/')) and http_content_type.endswith('+xml'):
-        acceptable_content_type = 1
-        true_encoding = http_encoding or 'us-ascii'
-    elif http_content_type.startswith('text/'):
-        true_encoding = http_encoding or 'us-ascii'
-    elif http_headers and (not http_headers.has_key('content-type')):
-        true_encoding = xml_encoding or 'iso-8859-1'
-    else:
-        true_encoding = xml_encoding or 'utf-8'
-    return true_encoding, http_encoding, xml_encoding, sniffed_xml_encoding, acceptable_content_type
-    
-def _toUTF8(data, encoding):
-    '''Changes an XML data stream on the fly to specify a new encoding
-
-    data is a raw sequence of bytes (not Unicode) that is presumed to be in %encoding already
-    encoding is a string recognized by encodings.aliases
-    '''
-    if _debug: sys.stderr.write('entering _toUTF8, trying encoding %s\n' % encoding)
-    # strip Byte Order Mark (if present)
-    if (len(data) >= 4) and (data[:2] == '\xfe\xff') and (data[2:4] != '\x00\x00'):
-        if _debug:
-            sys.stderr.write('stripping BOM\n')
-            if encoding != 'utf-16be':
-                sys.stderr.write('trying utf-16be instead\n')
-        encoding = 'utf-16be'
-        data = data[2:]
-    elif (len(data) >= 4) and (data[:2] == '\xff\xfe') and (data[2:4] != '\x00\x00'):
-        if _debug:
-            sys.stderr.write('stripping BOM\n')
-            if encoding != 'utf-16le':
-                sys.stderr.write('trying utf-16le instead\n')
-        encoding = 'utf-16le'
-        data = data[2:]
-    elif data[:3] == '\xef\xbb\xbf':
-        if _debug:
-            sys.stderr.write('stripping BOM\n')
-            if encoding != 'utf-8':
-                sys.stderr.write('trying utf-8 instead\n')
-        encoding = 'utf-8'
-        data = data[3:]
-    elif data[:4] == '\x00\x00\xfe\xff':
-        if _debug:
-            sys.stderr.write('stripping BOM\n')
-            if encoding != 'utf-32be':
-                sys.stderr.write('trying utf-32be instead\n')
-        encoding = 'utf-32be'
-        data = data[4:]
-    elif data[:4] == '\xff\xfe\x00\x00':
-        if _debug:
-            sys.stderr.write('stripping BOM\n')
-            if encoding != 'utf-32le':
-                sys.stderr.write('trying utf-32le instead\n')
-        encoding = 'utf-32le'
-        data = data[4:]
-    newdata = unicode(data, encoding)
-    if _debug: sys.stderr.write('successfully converted %s data to unicode\n' % encoding)
-    declmatch = re.compile('^<\?xml[^>]*?>')
-    newdecl = '''<?xml version='1.0' encoding='utf-8'?>'''
-    if declmatch.search(newdata):
-        newdata = declmatch.sub(newdecl, newdata)
-    else:
-        newdata = newdecl + u'\n' + newdata
-    return newdata.encode('utf-8')
-
-def _stripDoctype(data):
-    '''Strips DOCTYPE from XML document, returns (rss_version, stripped_data)
-
-    rss_version may be 'rss091n' or None
-    stripped_data is the same XML document, minus the DOCTYPE
-    '''
-    entity_pattern = re.compile(r'<!ENTITY([^>]*?)>', re.MULTILINE)
-    data = entity_pattern.sub('', data)
-    doctype_pattern = re.compile(r'<!DOCTYPE([^>]*?)>', re.MULTILINE)
-    doctype_results = doctype_pattern.findall(data)
-    doctype = doctype_results and doctype_results[0] or ''
-    if doctype.lower().count('netscape'):
-        version = 'rss091n'
-    else:
-        version = None
-    data = doctype_pattern.sub('', data)
-    return version, data
-    
-def parse(url_file_stream_or_string, etag=None, modified=None, agent=None, referrer=None, handlers=[]):
-    '''Parse a feed from a URL, file, stream, or string'''
-    result = FeedParserDict()
-    result['feed'] = FeedParserDict()
-    result['entries'] = []
-    if _XML_AVAILABLE:
-        result['bozo'] = 0
-    if type(handlers) == types.InstanceType:
-        handlers = [handlers]
-    try:
-        f = _open_resource(url_file_stream_or_string, etag, modified, agent, referrer, handlers)
-        data = f.read()
-    except Exception, e:
-        result['bozo'] = 1
-        result['bozo_exception'] = e
-        data = ''
-        f = None
-
-    # if feed is gzip-compressed, decompress it
-    if f and data and hasattr(f, 'headers'):
-        if gzip and f.headers.get('content-encoding', '') == 'gzip':
-            try:
-                data = gzip.GzipFile(fileobj=_StringIO(data)).read()
-            except Exception, e:
-                # Some feeds claim to be gzipped but they're not, so
-                # we get garbage.  Ideally, we should re-request the
-                # feed without the 'Accept-encoding: gzip' header,
-                # but we don't.
-                result['bozo'] = 1
-                result['bozo_exception'] = e
-                data = ''
-        elif zlib and f.headers.get('content-encoding', '') == 'deflate':
-            try:
-                data = zlib.decompress(data, -zlib.MAX_WBITS)
-            except Exception, e:
-                result['bozo'] = 1
-                result['bozo_exception'] = e
-                data = ''
-
-    # save HTTP headers
-    if hasattr(f, 'info'):
-        info = f.info()
-        result['etag'] = info.getheader('ETag')
-        last_modified = info.getheader('Last-Modified')
-        if last_modified:
-            result['modified'] = _parse_date(last_modified)
-    if hasattr(f, 'url'):
-        result['href'] = f.url
-        result['status'] = 200
-    if hasattr(f, 'status'):
-        result['status'] = f.status
-    if hasattr(f, 'headers'):
-        result['headers'] = f.headers.dict
-    if hasattr(f, 'close'):
-        f.close()
-
-    # there are four encodings to keep track of:
-    # - http_encoding is the encoding declared in the Content-Type HTTP header
-    # - xml_encoding is the encoding declared in the <?xml declaration
-    # - sniffed_encoding is the encoding sniffed from the first 4 bytes of the XML data
-    # - result['encoding'] is the actual encoding, as per RFC 3023 and a variety of other conflicting specifications
-    http_headers = result.get('headers', {})
-    result['encoding'], http_encoding, xml_encoding, sniffed_xml_encoding, acceptable_content_type = \
-        _getCharacterEncoding(http_headers, data)
-    if http_headers and (not acceptable_content_type):
-        if http_headers.has_key('content-type'):
-            bozo_message = '%s is not an XML media type' % http_headers['content-type']
-        else:
-            bozo_message = 'no Content-type specified'
-        result['bozo'] = 1
-        result['bozo_exception'] = NonXMLContentType(bozo_message)
-        
-    result['version'], data = _stripDoctype(data)
-
-    baseuri = http_headers.get('content-location', result.get('href'))
-    baselang = http_headers.get('content-language', None)
-
-    # if server sent 304, we're done
-    if result.get('status', 0) == 304:
-        result['version'] = ''
-        result['debug_message'] = 'The feed has not changed since you last checked, ' + \
-            'so the server sent no data.  This is a feature, not a bug!'
-        return result
-
-    # if there was a problem downloading, we're done
-    if not data:
-        return result
-
-    # determine character encoding
-    use_strict_parser = 0
-    known_encoding = 0
-    tried_encodings = []
-    # try: HTTP encoding, declared XML encoding, encoding sniffed from BOM
-    for proposed_encoding in (result['encoding'], xml_encoding, sniffed_xml_encoding):
-        if not proposed_encoding: continue
-        if proposed_encoding in tried_encodings: continue
-        tried_encodings.append(proposed_encoding)
-        try:
-            data = _toUTF8(data, proposed_encoding)
-            known_encoding = use_strict_parser = 1
-            break
-        except:
-            pass
-    # if no luck and we have auto-detection library, try that
-    if (not known_encoding) and chardet:
-        try:
-            proposed_encoding = chardet.detect(data)['encoding']
-            if proposed_encoding and (proposed_encoding not in tried_encodings):
-                tried_encodings.append(proposed_encoding)
-                data = _toUTF8(data, proposed_encoding)
-                known_encoding = use_strict_parser = 1
-        except:
-            pass
-    # if still no luck and we haven't tried utf-8 yet, try that
-    if (not known_encoding) and ('utf-8' not in tried_encodings):
-        try:
-            proposed_encoding = 'utf-8'
-            tried_encodings.append(proposed_encoding)
-            data = _toUTF8(data, proposed_encoding)
-            known_encoding = use_strict_parser = 1
-        except:
-            pass
-    # if still no luck and we haven't tried windows-1252 yet, try that
-    if (not known_encoding) and ('windows-1252' not in tried_encodings):
-        try:
-            proposed_encoding = 'windows-1252'
-            tried_encodings.append(proposed_encoding)
-            data = _toUTF8(data, proposed_encoding)
-            known_encoding = use_strict_parser = 1
-        except:
-            pass
-    # if still no luck, give up
-    if not known_encoding:
-        result['bozo'] = 1
-        result['bozo_exception'] = CharacterEncodingUnknown( \
-            'document encoding unknown, I tried ' + \
-            '%s, %s, utf-8, and windows-1252 but nothing worked' % \
-            (result['encoding'], xml_encoding))
-        result['encoding'] = ''
-    elif proposed_encoding != result['encoding']:
-        result['bozo'] = 1
-        result['bozo_exception'] = CharacterEncodingOverride( \
-            'documented declared as %s, but parsed as %s' % \
-            (result['encoding'], proposed_encoding))
-        result['encoding'] = proposed_encoding
-
-    if not _XML_AVAILABLE:
-        use_strict_parser = 0
-    if use_strict_parser:
-        # initialize the SAX parser
-        feedparser = _StrictFeedParser(baseuri, baselang, 'utf-8')
-        saxparser = xml.sax.make_parser(PREFERRED_XML_PARSERS)
-        saxparser.setFeature(xml.sax.handler.feature_namespaces, 1)
-        saxparser.setContentHandler(feedparser)
-        saxparser.setErrorHandler(feedparser)
-        source = xml.sax.xmlreader.InputSource()
-        source.setByteStream(_StringIO(data))
-        if hasattr(saxparser, '_ns_stack'):
-            # work around bug in built-in SAX parser (doesn't recognize xml: namespace)
-            # PyXML doesn't have this problem, and it doesn't have _ns_stack either
-            saxparser._ns_stack.append({'http://www.w3.org/XML/1998/namespace':'xml'})
-        try:
-            saxparser.parse(source)
-        except Exception, e:
-            if _debug:
-                import traceback
-                traceback.print_stack()
-                traceback.print_exc()
-                sys.stderr.write('xml parsing failed\n')
-            result['bozo'] = 1
-            result['bozo_exception'] = feedparser.exc or e
-            use_strict_parser = 0
-    if not use_strict_parser:
-        feedparser = _LooseFeedParser(baseuri, baselang, known_encoding and 'utf-8' or '')
-        feedparser.feed(data)
-    result['feed'] = feedparser.feeddata
-    result['entries'] = feedparser.entries
-    result['version'] = result['version'] or feedparser.version
-    result['namespaces'] = feedparser.namespacesInUse
-    return result
-
-if __name__ == '__main__':
-    if not sys.argv[1:]:
-        print __doc__
-        sys.exit(0)
-    else:
-        urls = sys.argv[1:]
-    zopeCompatibilityHack()
-    from pprint import pprint
-    for url in urls:
-        print url
-        print
-        result = parse(url)
-        pprint(result)
-        print
-
-#REVISION HISTORY
-#1.0 - 9/27/2002 - MAP - fixed namespace processing on prefixed RSS 2.0 elements,
-#  added Simon Fell's test suite
-#1.1 - 9/29/2002 - MAP - fixed infinite loop on incomplete CDATA sections
-#2.0 - 10/19/2002
-#  JD - use inchannel to watch out for image and textinput elements which can
-#  also contain title, link, and description elements
-#  JD - check for isPermaLink='false' attribute on guid elements
-#  JD - replaced openAnything with open_resource supporting ETag and
-#  If-Modified-Since request headers
-#  JD - parse now accepts etag, modified, agent, and referrer optional
-#  arguments
-#  JD - modified parse to return a dictionary instead of a tuple so that any
-#  etag or modified information can be returned and cached by the caller
-#2.0.1 - 10/21/2002 - MAP - changed parse() so that if we don't get anything
-#  because of etag/modified, return the old etag/modified to the caller to
-#  indicate why nothing is being returned
-#2.0.2 - 10/21/2002 - JB - added the inchannel to the if statement, otherwise its
-#  useless.  Fixes the problem JD was addressing by adding it.
-#2.1 - 11/14/2002 - MAP - added gzip support
-#2.2 - 1/27/2003 - MAP - added attribute support, admin:generatorAgent.
-#  start_admingeneratoragent is an example of how to handle elements with
-#  only attributes, no content.
-#2.3 - 6/11/2003 - MAP - added USER_AGENT for default (if caller doesn't specify);
-#  also, make sure we send the User-Agent even if urllib2 isn't available.
-#  Match any variation of backend.userland.com/rss namespace.
-#2.3.1 - 6/12/2003 - MAP - if item has both link and guid, return both as-is.
-#2.4 - 7/9/2003 - MAP - added preliminary Pie/Atom/Echo support based on Sam Ruby's
-#  snapshot of July 1 <http://www.intertwingly.net/blog/1506.html>; changed
-#  project name
-#2.5 - 7/25/2003 - MAP - changed to Python license (all contributors agree);
-#  removed unnecessary urllib code -- urllib2 should always be available anyway;
-#  return actual url, status, and full HTTP headers (as result['url'],
-#  result['status'], and result['headers']) if parsing a remote feed over HTTP --
-#  this should pass all the HTTP tests at <http://diveintomark.org/tests/client/http/>;
-#  added the latest namespace-of-the-week for RSS 2.0
-#2.5.1 - 7/26/2003 - RMK - clear opener.addheaders so we only send our custom
-#  User-Agent (otherwise urllib2 sends two, which confuses some servers)
-#2.5.2 - 7/28/2003 - MAP - entity-decode inline xml properly; added support for
-#  inline <xhtml:body> and <xhtml:div> as used in some RSS 2.0 feeds
-#2.5.3 - 8/6/2003 - TvdV - patch to track whether we're inside an image or
-#  textInput, and also to return the character encoding (if specified)
-#2.6 - 1/1/2004 - MAP - dc:author support (MarekK); fixed bug tracking
-#  nested divs within content (JohnD); fixed missing sys import (JohanS);
-#  fixed regular expression to capture XML character encoding (Andrei);
-#  added support for Atom 0.3-style links; fixed bug with textInput tracking;
-#  added support for cloud (MartijnP); added support for multiple
-#  category/dc:subject (MartijnP); normalize content model: 'description' gets
-#  description (which can come from description, summary, or full content if no
-#  description), 'content' gets dict of base/language/type/value (which can come
-#  from content:encoded, xhtml:body, content, or fullitem);
-#  fixed bug matching arbitrary Userland namespaces; added xml:base and xml:lang
-#  tracking; fixed bug tracking unknown tags; fixed bug tracking content when
-#  <content> element is not in default namespace (like Pocketsoap feed);
-#  resolve relative URLs in link, guid, docs, url, comments, wfw:comment,
-#  wfw:commentRSS; resolve relative URLs within embedded HTML markup in
-#  description, xhtml:body, content, content:encoded, title, subtitle,
-#  summary, info, tagline, and copyright; added support for pingback and
-#  trackback namespaces
-#2.7 - 1/5/2004 - MAP - really added support for trackback and pingback
-#  namespaces, as opposed to 2.6 when I said I did but didn't really;
-#  sanitize HTML markup within some elements; added mxTidy support (if
-#  installed) to tidy HTML markup within some elements; fixed indentation
-#  bug in _parse_date (FazalM); use socket.setdefaulttimeout if available
-#  (FazalM); universal date parsing and normalization (FazalM): 'created', modified',
-#  'issued' are parsed into 9-tuple date format and stored in 'created_parsed',
-#  'modified_parsed', and 'issued_parsed'; 'date' is duplicated in 'modified'
-#  and vice-versa; 'date_parsed' is duplicated in 'modified_parsed' and vice-versa
-#2.7.1 - 1/9/2004 - MAP - fixed bug handling &quot; and &apos;.  fixed memory
-#  leak not closing url opener (JohnD); added dc:publisher support (MarekK);
-#  added admin:errorReportsTo support (MarekK); Python 2.1 dict support (MarekK)
-#2.7.4 - 1/14/2004 - MAP - added workaround for improperly formed <br/> tags in
-#  encoded HTML (skadz); fixed unicode handling in normalize_attrs (ChrisL);
-#  fixed relative URI processing for guid (skadz); added ICBM support; added
-#  base64 support
-#2.7.5 - 1/15/2004 - MAP - added workaround for malformed DOCTYPE (seen on many
-#  blogspot.com sites); added _debug variable
-#2.7.6 - 1/16/2004 - MAP - fixed bug with StringIO importing
-#3.0b3 - 1/23/2004 - MAP - parse entire feed with real XML parser (if available);
-#  added several new supported namespaces; fixed bug tracking naked markup in
-#  description; added support for enclosure; added support for source; re-added
-#  support for cloud which got dropped somehow; added support for expirationDate
-#3.0b4 - 1/26/2004 - MAP - fixed xml:lang inheritance; fixed multiple bugs tracking
-#  xml:base URI, one for documents that don't define one explicitly and one for
-#  documents that define an outer and an inner xml:base that goes out of scope
-#  before the end of the document
-#3.0b5 - 1/26/2004 - MAP - fixed bug parsing multiple links at feed level
-#3.0b6 - 1/27/2004 - MAP - added feed type and version detection, result['version']
-#  will be one of SUPPORTED_VERSIONS.keys() or empty string if unrecognized;
-#  added support for creativeCommons:license and cc:license; added support for
-#  full Atom content model in title, tagline, info, copyright, summary; fixed bug
-#  with gzip encoding (not always telling server we support it when we do)
-#3.0b7 - 1/28/2004 - MAP - support Atom-style author element in author_detail
-#  (dictionary of 'name', 'url', 'email'); map author to author_detail if author
-#  contains name + email address
-#3.0b8 - 1/28/2004 - MAP - added support for contributor
-#3.0b9 - 1/29/2004 - MAP - fixed check for presence of dict function; added
-#  support for summary
-#3.0b10 - 1/31/2004 - MAP - incorporated ISO-8601 date parsing routines from
-#  xml.util.iso8601
-#3.0b11 - 2/2/2004 - MAP - added 'rights' to list of elements that can contain
-#  dangerous markup; fiddled with decodeEntities (not right); liberalized
-#  date parsing even further
-#3.0b12 - 2/6/2004 - MAP - fiddled with decodeEntities (still not right);
-#  added support to Atom 0.2 subtitle; added support for Atom content model
-#  in copyright; better sanitizing of dangerous HTML elements with end tags
-#  (script, frameset)
-#3.0b13 - 2/8/2004 - MAP - better handling of empty HTML tags (br, hr, img,
-#  etc.) in embedded markup, in either HTML or XHTML form (<br>, <br/>, <br />)
-#3.0b14 - 2/8/2004 - MAP - fixed CDATA handling in non-wellformed feeds under
-#  Python 2.1
-#3.0b15 - 2/11/2004 - MAP - fixed bug resolving relative links in wfw:commentRSS;
-#  fixed bug capturing author and contributor URL; fixed bug resolving relative
-#  links in author and contributor URL; fixed bug resolvin relative links in
-#  generator URL; added support for recognizing RSS 1.0; passed Simon Fell's
-#  namespace tests, and included them permanently in the test suite with his
-#  permission; fixed namespace handling under Python 2.1
-#3.0b16 - 2/12/2004 - MAP - fixed support for RSS 0.90 (broken in b15)
-#3.0b17 - 2/13/2004 - MAP - determine character encoding as per RFC 3023
-#3.0b18 - 2/17/2004 - MAP - always map description to summary_detail (Andrei);
-#  use libxml2 (if available)
-#3.0b19 - 3/15/2004 - MAP - fixed bug exploding author information when author
-#  name was in parentheses; removed ultra-problematic mxTidy support; patch to
-#  workaround crash in PyXML/expat when encountering invalid entities
-#  (MarkMoraes); support for textinput/textInput
-#3.0b20 - 4/7/2004 - MAP - added CDF support
-#3.0b21 - 4/14/2004 - MAP - added Hot RSS support
-#3.0b22 - 4/19/2004 - MAP - changed 'channel' to 'feed', 'item' to 'entries' in
-#  results dict; changed results dict to allow getting values with results.key
-#  as well as results[key]; work around embedded illformed HTML with half
-#  a DOCTYPE; work around malformed Content-Type header; if character encoding
-#  is wrong, try several common ones before falling back to regexes (if this
-#  works, bozo_exception is set to CharacterEncodingOverride); fixed character
-#  encoding issues in BaseHTMLProcessor by tracking encoding and converting
-#  from Unicode to raw strings before feeding data to sgmllib.SGMLParser;
-#  convert each value in results to Unicode (if possible), even if using
-#  regex-based parsing
-#3.0b23 - 4/21/2004 - MAP - fixed UnicodeDecodeError for feeds that contain
-#  high-bit characters in attributes in embedded HTML in description (thanks
-#  Thijs van de Vossen); moved guid, date, and date_parsed to mapped keys in
-#  FeedParserDict; tweaked FeedParserDict.has_key to return True if asking
-#  about a mapped key
-#3.0fc1 - 4/23/2004 - MAP - made results.entries[0].links[0] and
-#  results.entries[0].enclosures[0] into FeedParserDict; fixed typo that could
-#  cause the same encoding to be tried twice (even if it failed the first time);
-#  fixed DOCTYPE stripping when DOCTYPE contained entity declarations;
-#  better textinput and image tracking in illformed RSS 1.0 feeds
-#3.0fc2 - 5/10/2004 - MAP - added and passed Sam's amp tests; added and passed
-#  my blink tag tests
-#3.0fc3 - 6/18/2004 - MAP - fixed bug in _changeEncodingDeclaration that
-#  failed to parse utf-16 encoded feeds; made source into a FeedParserDict;
-#  duplicate admin:generatorAgent/@rdf:resource in generator_detail.url;
-#  added support for image; refactored parse() fallback logic to try other
-#  encodings if SAX parsing fails (previously it would only try other encodings
-#  if re-encoding failed); remove unichr madness in normalize_attrs now that
-#  we're properly tracking encoding in and out of BaseHTMLProcessor; set
-#  feed.language from root-level xml:lang; set entry.id from rdf:about;
-#  send Accept header
-#3.0 - 6/21/2004 - MAP - don't try iso-8859-1 (can't distinguish between
-#  iso-8859-1 and windows-1252 anyway, and most incorrectly marked feeds are
-#  windows-1252); fixed regression that could cause the same encoding to be
-#  tried twice (even if it failed the first time)
-#3.0.1 - 6/22/2004 - MAP - default to us-ascii for all text/* content types;
-#  recover from malformed content-type header parameter with no equals sign
-#  ('text/xml; charset:iso-8859-1')
-#3.1 - 6/28/2004 - MAP - added and passed tests for converting HTML entities
-#  to Unicode equivalents in illformed feeds (aaronsw); added and
-#  passed tests for converting character entities to Unicode equivalents
-#  in illformed feeds (aaronsw); test for valid parsers when setting
-#  XML_AVAILABLE; make version and encoding available when server returns
-#  a 304; add handlers parameter to pass arbitrary urllib2 handlers (like
-#  digest auth or proxy support); add code to parse username/password
-#  out of url and send as basic authentication; expose downloading-related
-#  exceptions in bozo_exception (aaronsw); added __contains__ method to
-#  FeedParserDict (aaronsw); added publisher_detail (aaronsw)
-#3.2 - 7/3/2004 - MAP - use cjkcodecs and iconv_codec if available; always
-#  convert feed to UTF-8 before passing to XML parser; completely revamped
-#  logic for determining character encoding and attempting XML parsing
-#  (much faster); increased default timeout to 20 seconds; test for presence
-#  of Location header on redirects; added tests for many alternate character
-#  encodings; support various EBCDIC encodings; support UTF-16BE and
-#  UTF16-LE with or without a BOM; support UTF-8 with a BOM; support
-#  UTF-32BE and UTF-32LE with or without a BOM; fixed crashing bug if no
-#  XML parsers are available; added support for 'Content-encoding: deflate';
-#  send blank 'Accept-encoding: ' header if neither gzip nor zlib modules
-#  are available
-#3.3 - 7/15/2004 - MAP - optimize EBCDIC to ASCII conversion; fix obscure
-#  problem tracking xml:base and xml:lang if element declares it, child
-#  doesn't, first grandchild redeclares it, and second grandchild doesn't;
-#  refactored date parsing; defined public registerDateHandler so callers
-#  can add support for additional date formats at runtime; added support
-#  for OnBlog, Nate, MSSQL, Greek, and Hungarian dates (ytrewq1); added
-#  zopeCompatibilityHack() which turns FeedParserDict into a regular
-#  dictionary, required for Zope compatibility, and also makes command-
-#  line debugging easier because pprint module formats real dictionaries
-#  better than dictionary-like objects; added NonXMLContentType exception,
-#  which is stored in bozo_exception when a feed is served with a non-XML
-#  media type such as 'text/plain'; respect Content-Language as default
-#  language if not xml:lang is present; cloud dict is now FeedParserDict;
-#  generator dict is now FeedParserDict; better tracking of xml:lang,
-#  including support for xml:lang='' to unset the current language;
-#  recognize RSS 1.0 feeds even when RSS 1.0 namespace is not the default
-#  namespace; don't overwrite final status on redirects (scenarios:
-#  redirecting to a URL that returns 304, redirecting to a URL that
-#  redirects to another URL with a different type of redirect); add
-#  support for HTTP 303 redirects
-#4.0 - MAP - support for relative URIs in xml:base attribute; fixed
-#  encoding issue with mxTidy (phopkins); preliminary support for RFC 3229;
-#  support for Atom 1.0; support for iTunes extensions; new 'tags' for
-#  categories/keywords/etc. as array of dict
-#  {'term': term, 'scheme': scheme, 'label': label} to match Atom 1.0
-#  terminology; parse RFC 822-style dates with no time; lots of other
-#  bug fixes
-#4.1 - MAP - removed socket timeout; added support for chardet library