Anonymous avatar Anonymous committed b239672

add sitemap.

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Files changed (7)

couchit/context_processors.py

         site_url = ''
     return {
         'site_url': site_url,
-        'current_url': request.url
+        'current_url': request.url,
+        'host_url': request.host_url
     }
 
 @register_contextprocessor

couchit/contrib/__init__.py

-from couchit.contrib.markdown_extensions import *

couchit/contrib/feedparser.py

+#!/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