#!/usr/bin/env python
"""Universal feed parser
Visit http://diveintomark.org/projects/feed_parser/ for the latest version
Handles RSS 0.9x, RSS 1.0, RSS 2.0, CDF, Atom feeds
Required: Python 2.1 or later
Recommended: Python 2.3 or later
Recommended: libxml2 <http://xmlsoft.org/python.html>
"""
__version__ = "3.0-fc-1"
__author__ = "Mark Pilgrim <http://diveintomark.org/>"
__copyright__ = "Copyright 2002-4, Mark Pilgrim"
__contributors__ = ["Jason Diamond <http://injektilo.org/>",
"John Beimler <http://john.beimler.org/>",
"Fazal Majid <http://www.majid.info/mylos/weblog/>"]
__license__ = "Python"
_debug = 0
_debug_never_use_libxml2 = 0
# if you are embedding feedparser in a larger application, you should change this to your application name and URL
USER_AGENT = "UniversalFeedParser/%s%s +http://diveintomark.org/projects/feed_parser/" % (__version__, _debug and "-debug" or "")
# If you want feedparser to automatically run HTML markup through HTML Tidy, set this to 1.
# This is off by default because of reports of crashing on some platforms. If it crashes
# for you, please submit a bug report with your OS platform, Python version, and the URL
# of the feed you were attempting to parse.
# Requires mxTidy <http://www.egenix.com/files/python/mxTidy.html>
TIDY_MARKUP = 0
# ---------- required modules (should come with any Python distribution) ----------
import sgmllib, re, sys, copy, urlparse, time, rfc822, types
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
# timeoutsocket allows feedparser to time out rather than hang forever on ultra-slow servers.
# Python 2.3 now has this functionality available in the standard socket library, so under
# 2.3 you don't need to install anything. But you probably should anyway, because the socket
# module is buggy and timeoutsocket is better.
try:
import timeoutsocket # http://www.timo-tasi.org/python/timeoutsocket.py
timeoutsocket.setDefaultSocketTimeout(10)
except ImportError:
import socket
if hasattr(socket, 'setdefaulttimeout'):
socket.setdefaulttimeout(10)
import urllib2
_mxtidy = None
if TIDY_MARKUP:
try:
from mx.Tidy import Tidy as _mxtidy
except:
pass
# If a real XML parser is available, feedparser will attempt to use it. feedparser works
# with both the built-in SAX parser and PyXML SAX parser. 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 just fall back on regex-based parsing. If XML libraries are
# available but the feed turns out not to be well-formed XML, feedparser will fall back
# on regex-based parsing and set the "bozo" bit in the results to indicate that the feed
# author is a bozo who can't generate well-formed XML. The two advantages of using a real
# XML parser are (1) Unicode support, and (2) to get people to stop yelling at me for not
# using one.
try:
import xml.sax
from xml.sax.saxutils import escape as _xmlescape
class CharacterEncodingOverride(xml.sax.SAXException): pass
_XML_AVAILABLE = 1
except:
_XML_AVAILABLE = 0
def _xmlescape(data):
data = data.replace("&", "&")
data = data.replace(">", ">")
data = data.replace("<", "<")
return data
# base64 support for Atom feeds that contain embedded binary data
try:
import base64, binascii
except:
base64 = binascii = None
# ---------- don't touch these ----------
sgmllib.tagfind = re.compile('[a-zA-Z][-_.:a-zA-Z0-9]*')
sgmllib.special = re.compile('<!')
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',
'atom': 'Atom (unknown version)',
'cdf': 'CDF',
'hotrss': 'Hot RSS'
}
try:
dict
except NameError:
# Python 2.1 does not have a built-in dict() function
def dict(aList):
rc = {}
for k, v in aList:
rc[k] = v
return rc
from UserDict import UserDict
class FeedParserDict(UserDict):
def __getitem__(self, key):
keymap = {'channel': 'feed',
'items': 'entries',
'guid': 'id',
'date': 'modified',
'date_parsed': 'modified_parsed'}
key = keymap.get(key, key)
return UserDict.__getitem__(self, key)
def has_key(self, key):
return hasattr(self, key) or UserDict.has_key(self, key)
def __getattr__(self, key):
try:
return self.__dict__[key]
except KeyError:
pass
try:
return self.__getitem__(key)
except:
raise AttributeError, "object has no attribute '%s'" % key
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://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://postneo.com/icbm/": "icbm",
"http://purl.org/rss/1.0/modules/image/": "image",
"http://xmlns.com/foaf/0.1/": "foaf",
"http://freshmeat.net/rss/fm/": "fm",
"http://purl.org/rss/1.0/modules/link/": "l",
"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://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://schemas.xmlsoap.org/soap/envelope/": "soap",
"http://www.w3.org/1999/xhtml": "xhtml",
"http://www.w3.org/XML/1998/namespace": "xml"
}
can_be_relative_uri = ['link', 'id', 'wfw_comment', 'wfw_commentrss', 'docs', 'url', 'comments']
can_contain_relative_uris = ['content', 'description', 'title', 'summary', 'info', 'tagline', 'copyright']
can_contain_dangerous_markup = ['content', 'description', 'title', 'summary', 'info', 'tagline', 'copyright']
html_types = ['text/html', 'application/xhtml+xml']
def __init__(self, baseuri=None, encoding='utf-8'):
if _debug: sys.stderr.write("initializing FeedParser\n")
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
# the following are used internally to track state;
# some of this is kind of out of control and should
# probably be refactored into a finite state machine
self.infeed = 0
self.inentry = 0
self.incontent = 0
self.intextinput = 0
self.inimage = 0
self.inauthor = 0
self.incontributor = 0
self.contentparams = FeedParserDict()
self.namespacemap = {}
self.elementstack = []
self.basestack = []
self.langstack = []
self.baseuri = baseuri or ''
self.lang = None
def unknown_starttag(self, tag, attrs):
if _debug: sys.stderr.write('start %s with %s\n' % (tag, attrs))
# normalize attrs
attrs = [(k.lower(), sgmllib.charref.sub(lambda m: unichr(int(m.groups()[0])), v).strip()) 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'))
if baseuri:
if _debug: sys.stderr.write('self.baseuri=%s\n' % baseuri)
self.baseuri = baseuri
lang = attrsD.get('xml:lang', attrsD.get('lang'))
if lang:
self.lang = lang
self.basestack.append(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.get('mode') == 'escaped':
# element declared itself as escaped markup, but it isn't really
self.contentparams['mode'] = 'xml'
if self.incontent and self.contentparams.get('mode') == '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', '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.get('mode') == 'escaped':
# element declared itself as escaped markup, but it isn't really
self.contentparams['mode'] = 'xml'
if self.incontent and self.contentparams.get('mode') == '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]:
baseuri = self.basestack[-1]
if _debug: sys.stderr.write('self.baseuri=%s\n' % baseuri)
self.baseuri = baseuri
if self.langstack:
lang = self.langstack.pop()
if lang:
self.lang = lang
def handle_charref(self, ref):
# called for each character reference, e.g. for " ", ref will be "160"
# Reconstruct the original character reference.
if not self.elementstack: return
text = "&#%s;" % ref
self.elementstack[-1][2].append(text)
def handle_entityref(self, ref):
# called for each entity reference, e.g. for "©", ref will be "copy"
# Reconstruct the original entity reference.
if not self.elementstack: return
text = "&%s;" % ref
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('mode') == '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 trackNamespace(self, prefix, uri):
if (prefix, uri) == (None, 'http://my.netscape.com/rdf/simple/0.9/') and not self.version:
self.version = 'rss090'
if (prefix, uri) == (None, 'http://purl.org/rss/1.0/') and not self.version:
self.version = 'rss10'
if not prefix: return
if uri.find('backend.userland.com/rss') <> -1:
# match any backend.userland.com namespace
uri = 'http://backend.userland.com/rss'
if self.namespaces.has_key(uri):
self.namespacemap[prefix] = self.namespaces[uri]
def resolveURI(self, uri):
return urlparse.urljoin(self.baseuri or '', uri)
def decodeEntities(self, element, data):
if self.contentparams.get('mode') == 'escaped':
data = data.replace('<', '<')
data = data.replace('>', '>')
data = data.replace('&', '&')
data = data.replace('"', '"')
data = data.replace(''', "'")
return data
def push(self, element, expectingText):
self.elementstack.append([element, expectingText, []])
def pop(self, element):
if not self.elementstack: return
if self.elementstack[-1][0] != element: return
element, expectingText, pieces = self.elementstack.pop()
output = "".join(pieces)
output = output.strip()
if not expectingText: return output
# decode base64 content
if self.contentparams.get('mode') == 'base64' and base64:
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
output = self.decodeEntities(element, output)
# resolve relative URIs within embedded markup
if element in self.can_contain_relative_uris:
output = _resolveRelativeURIs(output, self.baseuri, self.encoding)
# sanitize embedded markup
if element in self.can_contain_dangerous_markup:
output = _sanitizeHTML(output, self.encoding)
if type(output) == types.StringType:
try:
output = unicode(output, self.encoding)
except:
pass
# store output in appropriate place(s)
if self.inentry:
if element == 'content':
self.entries[-1].setdefault(element, [])
contentparams = copy.deepcopy(self.contentparams)
contentparams['value'] = output
self.entries[-1][element].append(contentparams)
elif element == 'category':
self.entries[-1][element] = output
domain = self.entries[-1]['categories'][-1][0]
self.entries[-1]['categories'][-1] = (domain, output)
elif element == 'source':
self.entries[-1]['source']['value'] = output
elif element == 'link':
self.entries[-1][element] = output
if output:
self.entries[-1]['links'][-1]['href'] = output
else:
self.entries[-1][element] = output
if self.incontent:
if element == 'description':
element = 'summary'
contentparams = copy.deepcopy(self.contentparams)
contentparams['value'] = output
self.entries[-1][element + '_detail'] = contentparams
elif self.infeed and (not self.intextinput) and (not self.inimage):
self.feeddata[element] = output
if element == 'category':
domain = self.feeddata['categories'][-1][0]
self.feeddata['categories'][-1] = (domain, output)
elif element == 'link':
self.feeddata['links'][-1]['href'] = output
elif self.incontent:
if element == 'description':
element = 'tagline'
contentparams = copy.deepcopy(self.contentparams)
contentparams['value'] = output
self.feeddata[element + '_detail'] = contentparams
return output
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 _save(self, key, value):
if value:
if self.inentry:
self.entries[-1].setdefault(key, value)
elif self.feeddata:
self.feeddata.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'):
if _debug: sys.stderr.write(attrsD['lastmod'] + '\n')
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
def _end_image(self):
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
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
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_name(self, attrsD):
self.push('name', 0)
def _end_name(self):
value = self.pop('name')
if 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
def _start_url(self, attrsD):
self.push('url', 1)
_start_homepage = _start_url
_start_uri = _start_url
def _end_url(self):
value = self.pop('url')
if self.inauthor:
self._save_author('url', value)
elif self.incontributor:
self._save_contributor('url', value)
elif self.inimage:
# TODO
pass
elif self.intextinput:
# TODO (map to link)
pass
_end_homepage = _end_url
_end_uri = _end_url
def _start_email(self, attrsD):
self.push('email', 0)
def _end_email(self):
value = self.pop('email')
if self.inauthor:
self._save_author('email', value)
elif self.incontributor:
self._save_contributor('email', value)
pass
def _getContext(self):
if self.inentry:
context = self.entries[-1]
else:
context = self.feeddata
return context
def _save_author(self, key, value):
context = self._getContext()
context.setdefault('author_detail', FeedParserDict())
context['author_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):
context = self._getContext()
detail = context.get('author_detail')
if detail:
name = detail.get('name')
email = detail.get('email')
if name and email:
context['author'] = "%s (%s)" % (name, email)
elif name:
context['author'] = name
elif email:
context['author'] = email
else:
author = context.get('author')
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('author_detail', FeedParserDict())
context['author_detail']['name'] = author
context['author_detail']['email'] = email
def _start_tagline(self, attrsD):
self.incontent += 1
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'escaped'),
'type': attrsD.get('type', 'text/plain'),
'language': attrsD.get('xml:lang', self.lang),
'base': attrsD.get('xml:base', self.baseuri)})
self.push('tagline', 1)
_start_subtitle = _start_tagline
def _end_tagline(self):
value = self.pop('tagline')
self.incontent -= 1
self.contentparams.clear()
if self.infeed:
self.feeddata['description'] = value
_end_subtitle = _end_tagline
def _start_copyright(self, attrsD):
self.incontent += 1
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'escaped'),
'type': attrsD.get('type', 'text/plain'),
'language': attrsD.get('xml:lang', self.lang),
'base': attrsD.get('xml:base', self.baseuri)})
self.push('copyright', 1)
_start_dc_rights = _start_copyright
def _end_copyright(self):
self.pop('copyright')
self.incontent -= 1
self.contentparams.clear()
_end_dc_rights = _end_copyright
def _start_item(self, attrsD):
self.entries.append(FeedParserDict())
self.push('item', 0)
self.inentry = 1
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')
_end_webmaster = _end_dc_publisher
def _start_dcterms_issued(self, attrsD):
self.push('issued', 1)
_start_issued = _start_dcterms_issued
def _end_dcterms_issued(self):
value = self.pop('issued')
self._save('issued_parsed', _parse_date(value))
_end_issued = _end_dcterms_issued
def _start_dcterms_created(self, attrsD):
self.push('created', 1)
_start_created = _start_dcterms_created
def _end_dcterms_created(self):
value = self.pop('created')
self._save('created_parsed', _parse_date(value))
_end_created = _end_dcterms_created
def _start_dcterms_modified(self, attrsD):
self.push('modified', 1)
_start_modified = _start_dcterms_modified
_start_dc_date = _start_dcterms_modified
_start_pubdate = _start_dcterms_modified
def _end_dcterms_modified(self):
value = self.pop('modified')
if _debug: sys.stderr.write('_end_dcterms_modified, value=' + value + '\n')
parsed_value = _parse_date(value)
self._save('modified_parsed', parsed_value)
_end_modified = _end_dcterms_modified
_end_dc_date = _end_dcterms_modified
_end_pubdate = _end_dcterms_modified
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 _start_category(self, attrsD):
self.push('category', 1)
domain = self._getAttribute(attrsD, 'domain')
cats = []
if self.inentry:
cats = self.entries[-1].setdefault('categories', [])
elif self.infeed:
cats = self.feeddata.setdefault('categories', [])
cats.append((domain, None))
_start_dc_subject = _start_category
_start_keywords = _start_category
def _end_category(self):
self.pop('category')
_end_dc_subject = _end_category
_end_keywords = _end_category
def _start_cloud(self, attrsD):
self.feeddata['cloud'] = attrsD
def _start_link(self, attrsD):
attrsD.setdefault('rel', 'alternate')
attrsD.setdefault('type', 'text/html')
if attrsD.has_key('href'):
attrsD['href'] = self.resolveURI(attrsD['href'])
expectingText = self.infeed or self.inentry
if self.inentry:
self.entries[-1].setdefault('links', [])
self.entries[-1]['links'].append(FeedParserDict(attrsD))
elif self.infeed:
self.feeddata.setdefault('links', [])
self.feeddata['links'].append(FeedParserDict(attrsD))
if attrsD.has_key('href'):
expectingText = 0
if attrsD.get('type', '') in self.html_types:
if self.inentry:
self.entries[-1]['link'] = attrsD['href']
elif self.infeed:
self.feeddata['link'] = attrsD['href']
else:
self.push('link', expectingText)
_start_producturl = _start_link
def _end_link(self):
value = self.pop('link')
if self.intextinput:
context = self._getContext()
context['textinput']['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')
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_id(self, attrsD):
self.push('id', 1)
def _end_id(self):
value = self.pop('id')
def _start_title(self, attrsD):
self.incontent += 1
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'escaped'),
'type': attrsD.get('type', 'text/plain'),
'language': attrsD.get('xml:lang', self.lang),
'base': attrsD.get('xml:base', self.baseuri)})
self.push('title', self.infeed or self.inentry)
_start_dc_title = _start_title
def _end_title(self):
value = self.pop('title')
self.incontent -= 1
self.contentparams.clear()
if self.intextinput:
context = self._getContext()
context['textinput']['title'] = value
_end_dc_title = _end_title
def _start_description(self, attrsD, default_content_type='text/html'):
self.incontent += 1
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'escaped'),
'type': attrsD.get('type', default_content_type),
'language': attrsD.get('xml:lang', self.lang),
'base': attrsD.get('xml:base', self.baseuri)})
self.push('description', self.infeed or self.inentry)
def _start_abstract(self, attrsD):
return self._start_description(attrsD, 'text/plain')
def _end_description(self):
value = self.pop('description')
self.incontent -= 1
self.contentparams.clear()
context = self._getContext()
if self.intextinput:
context['textinput']['description'] = value
elif self.inentry:
context['summary'] = value
elif self.infeed:
context['tagline'] = value
_end_abstract = _end_description
def _start_info(self, attrsD):
self.incontent += 1
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'escaped'),
'type': attrsD.get('type', 'text/plain'),
'language': attrsD.get('xml:lang', self.lang),
'base': attrsD.get('xml:base', self.baseuri)})
self.push('info', 1)
def _end_info(self):
self.pop('info')
self.incontent -= 1
self.contentparams.clear()
def _start_generator(self, attrsD):
if attrsD:
if attrsD.has_key('url'):
attrsD['url'] = self.resolveURI(attrsD['url'])
self.feeddata['generator_detail'] = attrsD
self.push('generator', 1)
def _end_generator(self):
value = self.pop('generator')
if self.feeddata.has_key('generator_detail'):
self.feeddata['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')
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):
self.incontent += 1
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'escaped'),
'type': attrsD.get('type', 'text/plain'),
'language': attrsD.get('xml:lang', self.lang),
'base': attrsD.get('xml:base', self.baseuri)})
self.push('summary', 1)
def _end_summary(self):
value = self.pop('summary')
if self.entries:
self.entries[-1]['description'] = value
self.incontent -= 1
self.contentparams.clear()
def _start_enclosure(self, attrsD):
if self.inentry:
self.entries[-1].setdefault('enclosures', [])
self.entries[-1]['enclosures'].append(FeedParserDict(attrsD))
def _start_source(self, attrsD):
if self.inentry:
self.entries[-1]['source'] = attrsD
self.push('source', 1)
def _end_source(self):
self.pop('source')
def _start_content(self, attrsD):
self.incontent += 1
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'xml'),
'type': attrsD.get('type', 'text/plain'),
'language': attrsD.get('xml:lang', self.lang),
'base': attrsD.get('xml:base', self.baseuri)})
self.push('content', 1)
def _start_prodlink(self, attrsD):
self.incontent += 1
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'xml'),
'type': attrsD.get('type', 'text/html'),
'language': attrsD.get('xml:lang', self.lang),
'base': attrsD.get('xml:base', self.baseuri)})
self.push('content', 1)
def _start_body(self, attrsD):
self.incontent += 1
self.contentparams = FeedParserDict({'mode': 'xml',
'type': 'application/xhtml+xml',
'language': attrsD.get('xml:lang', self.lang),
'base': attrsD.get('xml:base', self.baseuri)})
self.push('content', 1)
_start_xhtml_body = _start_body
def _start_content_encoded(self, attrsD):
self.incontent += 1
self.contentparams = FeedParserDict({'mode': 'escaped',
'type': 'text/html',
'language': attrsD.get('xml:lang', self.lang),
'base': attrsD.get('xml:base', self.baseuri)})
self.push('content', 1)
_start_fullitem = _start_content_encoded
def _end_content(self):
value = self.pop('content')
if self.contentparams.get('type') in (['text/plain'] + self.html_types):
self._save('description', value)
self.incontent -= 1
self.contentparams.clear()
_end_body = _end_content
_end_xhtml_body = _end_content
_end_content_encoded = _end_content
_end_fullitem = _end_content
_end_prodlink = _end_content
if _XML_AVAILABLE:
class _StrictFeedParser(_FeedParserMixin, xml.sax.handler.ContentHandler, xml.sax.handler.EntityResolver):#, xml.sax.handler.DTDHandler):
def __init__(self, baseuri, encoding):
if _debug: sys.stderr.write('trying StrictFeedParser\n')
xml.sax.handler.ContentHandler.__init__(self)
_FeedParserMixin.__init__(self, baseuri, 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
namespace = str(namespace or '')
if namespace.find('backend.userland.com/rss') <> -1:
# match any backend.userland.com namespace
namespace = 'http://backend.userland.com/rss'
prefix = self.namespaces.get(namespace, 'unknown')
if prefix:
localname = prefix + ':' + localname
localname = str(localname).lower()
# 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():
prefix = self.namespaces.get(namespace, '')
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 resolveEntity(self, publicId, systemId):
return _StringIO()
def characters(self, text):
self.handle_data(text)
def endElementNS(self, name, qname):
namespace, localname = name
namespace = str(namespace)
prefix = self.namespaces.get(namespace, '')
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
sgmllib.SGMLParser.__init__(self)
def reset(self):
self.pieces = []
sgmllib.SGMLParser.reset(self)
def feed(self, data):
data = re.compile(r'<!((?!DOCTYPE|--|\[))', re.IGNORECASE).sub(r'<!\1', data)
data = re.sub(r'<(\S+)/>', r'<\1></\1>', data)
data = data.replace(''', "'")
data = data.replace('"', '"')
if type(data) == types.UnicodeType:
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(), sgmllib.charref.sub(lambda m: unichr(int(m.groups()[0])), v).strip()) for k, v in attrs]
# The previous line may have output a Unicode string. If so we need to convert it back
# to raw bytes in the current encoding. If not, then just pass.
try:
attrs = [(k, v.encode(self.encoding)) for k, v in attrs]
except:
pass
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)
strattrs = "".join([' %s="%s"' % (key, value) for key, value in attrs])
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 " ", 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 "©", 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
if _debug: sys.stderr.write("i=%s, declstartpos=%s, rawdata=%s\n" % (i, declstartpos, 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"""
if _debug:
for p in self.pieces:
sys.stderr.write(p)
sys.stderr.write('\n')
return "".join([str(p) for p in self.pieces])
class _LooseFeedParser(_FeedParserMixin, _BaseHTMLProcessor):
def __init__(self, baseuri, encoding):
sgmllib.SGMLParser.__init__(self)
_FeedParserMixin.__init__(self, baseuri, encoding)
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 urlparse.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)
if _debug: sys.stderr.write(repr(type(htmlSource)) + '\n')
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 _mxtidy and TIDY_MARKUP:
nerrors, nwarnings, data, errordata = _mxtidy.tidy(data, output_xhtml=1, numeric_entities=1, wrap=0)
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.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)
from urllib import addinfourl
infourl = addinfourl(fp, headers, req.get_full_url())
infourl.status = code
return infourl
def http_error_302(self, req, fp, code, msg, headers):
infourl = urllib2.HTTPRedirectHandler.http_error_302(self, req, fp, code, msg, headers)
infourl.status = code
return infourl
def http_error_301(self, req, fp, code, msg, headers):
infourl = urllib2.HTTPRedirectHandler.http_error_301(self, req, fp, code, msg, headers)
infourl.status = code
return infourl
http_error_300 = http_error_302
http_error_307 = http_error_302
def _open_resource(url_file_stream_or_string, etag=None, modified=None, agent=None, referrer=None):
"""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 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
# 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:
request.add_header("Accept-encoding", "gzip")
opener = urllib2.build_opener(_FeedURLHandler())
opener.addheaders = [] # RMK - must clear so we only send our custom User-Agent
try:
try:
return opener.open(request)
except:
return _StringIO('')
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))
# 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 _w3dtf_parse(s):
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(s)
if m is None or m.group() != s:
return None
gmt = __extract_date(m) + __extract_time(m) + (0, 0, 0)
if gmt[0] == 0: return
return time.mktime(gmt) + __extract_tzd(m) - time.timezone
# Additional 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
# 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)
def _parse_date(date):
"""Parses a variety of date formats into a tuple of 9 integers"""
date = str(date)
try:
# try the standard rfc822 library, which handles
# RFC822, RFC1123, RFC2822, and asctime
tm = rfc822.parsedate_tz(date)
if tm:
return time.gmtime(rfc822.mktime_tz(tm))
# not a RFC2822 date, try W3DTF profile of ISO-8601
try:
tm = _w3dtf_parse(date)
except ValueError:
tm = None
if tm:
return time.gmtime(tm)
# try various non-W3DTF ISO-8601-compatible formats like 20040105
m = None
for _iso8601_match in _iso8601_matches:
m = _iso8601_match(date)
if m: break
if not m: return
# catch truly malformed strings
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))
except:
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. 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
"utf-8" as per the XML specification.
"""
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
"""
if not content_type:
return '', ''
content_type = content_type.strip()
paramstr = content_type.split(';')[1:]
if not paramstr:
return content_type, ''
content_type = content_type.split(';', 1)[0].strip().lower()
if not paramstr[0]:
# declaration like "text/xml;" (note ending semicolon)
# dunno if this is malformed but it sure was hard to track down
return content_type, ''
import string
params = dict([map(string.lower, map(string.strip, p.strip().split('=', 1))) for p in paramstr])
charset = params.get('charset')
if not charset:
return content_type, ''
if charset[0] in ('"', "'"):
charset = charset[1:]
if charset and charset[-1] in ('"', "'"):
charset = charset[:-1]
charset = charset.strip()
return content_type, charset
true_encoding = None
http_content_type, http_encoding = _parseHTTPContentType(http_headers.get("content-type"))
xml_encoding_match = re.compile('<\?.*encoding=[\'"](.*?)[\'"].*\?>').match(xml_data)
xml_encoding = xml_encoding_match and xml_encoding_match.groups()[0].lower() or ''
if (http_content_type == 'application/xml') or \
(http_content_type == 'application/xml-dtd') or \
(http_content_type == 'application/xml-external-parsed-entity') or \
(http_content_type.startswith('application/') and http_content_type.endswith('+xml')):
if http_encoding:
true_encoding = http_encoding
elif xml_encoding:
true_encoding = xml_encoding
else:
true_encoding = 'utf-8'
elif (http_content_type == 'text/xml') or \
(http_content_type == 'text/xml-external-parsed-entity') or \
(http_content_type.startswith('text/') and http_content_type.endswith('+xml')):
if http_encoding:
true_encoding = http_encoding
else:
true_encoding = 'us-ascii'
else:
true_encoding = xml_encoding or 'utf-8'
return true_encoding, http_encoding, xml_encoding
def _changeEncodingDeclaration(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 _changeEncodingDeclaration\n')
if _debug: sys.stderr.write('proposed encoding: %s\n' % encoding)
#import cjkcodecs.aliases
#import japanese
data = unicode(data, encoding)
declmatch = re.compile(u'^<\?xml[^>]*?>')
newdecl = unicode("""<?xml version='1.0' encoding='%s'?>""" % encoding, encoding)
if declmatch.search(data):
data = declmatch.sub(newdecl, data)
else:
data = newdecl + u'\n' + data
return data.encode(encoding)
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):
"""Parse a feed from a URL, file, stream, or string"""
result = FeedParserDict()
f = _open_resource(url_file_stream_or_string, etag=etag, modified=modified, agent=agent, referrer=referrer)
data = f.read()
if hasattr(f, "headers"):
if gzip and f.headers.get('content-encoding', '') == 'gzip':
try:
data = gzip.GzipFile(fileobj=_StringIO(data)).read()
except:
# some feeds claim to be gzipped but they're not, so we get garbage
data = ''
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["url"] = f.url
result["status"] = 200 # default, may be overridden later
if hasattr(f, "status"):
result["status"] = f.status
if hasattr(f, "headers"):
result["headers"] = f.headers.dict
f.close()
if result.get("status", 0) == 304:
result['feed'] = FeedParserDict()
result['entries'] = []
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
result['encoding'], http_encoding, xml_encoding = _getCharacterEncoding(result.get("headers", {}), data)
result['version'], data = _stripDoctype(data)
baseuri = result.get('headers', {}).get('content-location', result.get('url'))
# try true XML parser first
if not _XML_AVAILABLE:
if _debug: sys.stderr.write('no xml libraries available\n')
use_strict_parser = _XML_AVAILABLE
if use_strict_parser:
if _debug: sys.stderr.write('using xml library\n')
result['bozo'] = 0
feedparser = _StrictFeedParser(baseuri, result['encoding'])
if _debug and _debug_never_use_libxml2:
sys.stderr.write('not using libxml2 (even if available)\n')
additional_parsers = []
else:
additional_parsers = ["drv_libxml2"]
saxparser = xml.sax.make_parser(additional_parsers)
saxparser.setFeature(xml.sax.handler.feature_namespaces, 1)
saxparser.setContentHandler(feedparser)
saxparser.setErrorHandler(feedparser)
try:
saxparser.setDTDHandler(feedparser)
except xml.sax.SAXNotSupportedException:
# libxml2 driver does not support DTDHandler
if _debug: sys.stderr.write('using an xml library that does not support DTDHandler (not a big deal)\n')
try:
saxparser.setEntityResolver(feedparser)
except xml.sax.SAXNotSupportedException:
# libxml2 driver does not support EntityResolver
if _debug: sys.stderr.write('using an xml library that does not support EntityResolver (not a big deal)\n')
encoding_set = (result['encoding'] == xml_encoding)
if not encoding_set:
bozo_exception = None
proposed_encodings = [result['encoding'], xml_encoding, 'utf-8', 'iso-8859-1', 'windows-1252']
tried_encodings = []
for proposed_encoding in proposed_encodings:
if proposed_encoding in tried_encodings: continue
tried_encodings.append(proposed_encoding)
try:
data = _changeEncodingDeclaration(data, proposed_encoding)
except Exception, bozo_exception:
if _debug: sys.stderr.write('character encoding is wrong\n')
else:
if proposed_encoding != result['encoding']:
try:
raise CharacterEncodingOverride, "document declared as %s, but parsed as %s" % (result['encoding'], proposed_encoding)
except CharacterEncodingOverride, bozo_exception:
result['bozo'] = 1
result['bozo_exception'] = bozo_exception
result['encoding'] = proposed_encoding
encoding_set = 1
break
if not encoding_set:
result['bozo'] = 1
result['bozo_exception'] = bozo_exception
use_strict_parser = 0
if use_strict_parser:
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: sys.stderr.write('xml parsing failed\n')
feedparser.bozo = 1
feedparser.bozo_exception = feedparser.exc or e
if feedparser.bozo:
# feed is not well-formed XML, fall back on regex-based parser
result['bozo'] = 1
result['bozo_exception'] = feedparser.bozo_exception
use_strict_parser = 0
if not use_strict_parser:
if _debug: sys.stderr.write('using regexes, now you have two problems\n')
feedparser = _LooseFeedParser(baseuri, result['encoding'])
feedparser.feed(data)
result['feed'] = feedparser.feeddata
result['entries'] = feedparser.entries
result['version'] = result['version'] or feedparser.version
return result
if __name__ == '__main__':
if not sys.argv[1:]:
print __doc__
sys.exit(0)
else:
urls = sys.argv[1:]
from pprint import pprint
for url in urls:
print url
print
result = parse(url)
pprint(result['entries'])
#for entry in result['entries']:
# print entry['title']
# if entry.has_key('enclosures'):
# print entry['enclosures']
#print
#TODO
#- image
#
#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 " and '. 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