pset5/feedparser.py

“””Universal feed parser Handles RSS 0.9x, RSS 1.0, RSS 2.0, CDF, Atom 0.3, and Atom 1.0 feeds Visit https://code.google.com/p/feedparser/ for the latest version Visit http://packages.python.org/feedparser/ for the latest documentation Required: Python 2.4 or later Recommended: iconv_codec <http://cjkpython.i18n.org/> “”” __version__ = “5.2.1” __license__ = “”” Copyright 2010-2015 Kurt McKee <contactme@kurtmckee.org> Copyright 2002-2008 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/>”, “Sam Ruby <http://intertwingly.net/>”, “Ade Oshineye <http://blog.oshineye.com/>”, “Martin Pool <http://sourcefrog.net/>”, “Kurt McKee <http://kurtmckee.org/>”, “Bernd Schlapsi <https://github.com/brot>”,] # 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 +https://code.google.com/p/feedparser/” % __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 resolve all relative URIs, set this # to 1. RESOLVE_RELATIVE_URIS = 1 # If you want feedparser to automatically sanitize all potentially unsafe # HTML content, set this to 1. SANITIZE_HTML = 1 # ———- Python 3 modules (make it work if possible) ———- try: import rfc822 except ImportError: from email import _parseaddr as rfc822 try: # Python 3.1 introduces bytes.maketrans and simultaneously # deprecates string.maketrans; use bytes.maketrans if possible _maketrans = bytes.maketrans except (NameError, AttributeError): import string _maketrans = string.maketrans # base64 support for Atom feeds that contain embedded binary data try: import base64, binascii except ImportError: base64 = binascii = None else: # Python 3.1 deprecates decodestring in favor of decodebytes _base64decode = getattr(base64, ‘decodebytes’, base64.decodestring) # _s2bytes: convert a UTF-8 str to bytes if the interpreter is Python 3 # _l2bytes: convert a list of ints to bytes if the interpreter is Python 3 try: if bytes is str: # In Python 2.5 and below, bytes doesn’t exist (NameError) # In Python 2.6 and above, bytes and str are the same type raise NameError except NameError: # Python 2 def _s2bytes(s): return s def _l2bytes(l): return ”.join(map(chr, l)) else: # Python 3 def _s2bytes(s): return bytes(s, ‘utf8’) def _l2bytes(l): return bytes(l) # If you want feedparser to allow all URL schemes, set this to () # List culled from Python’s urlparse documentation at: # http://docs.python.org/library/urlparse.html # as well as from “URI scheme” at Wikipedia: # https://secure.wikimedia.org/wikipedia/en/wiki/URI_scheme # Many more will likely need to be added! ACCEPTABLE_URI_SCHEMES = ( ‘file’, ‘ftp’, ‘gopher’, ‘h323’, ‘hdl’, ‘http’, ‘https’, ‘imap’, ‘magnet’, ‘mailto’, ‘mms’, ‘news’, ‘nntp’, ‘prospero’, ‘rsync’, ‘rtsp’, ‘rtspu’, ‘sftp’, ‘shttp’, ‘sip’, ‘sips’, ‘snews’, ‘svn’, ‘svn+ssh’, ‘telnet’, ‘wais’, # Additional common-but-unofficial schemes ‘aim’, ‘callto’, ‘cvs’, ‘facetime’, ‘feed’, ‘git’, ‘gtalk’, ‘irc’, ‘ircs’, ‘irc6’, ‘itms’, ‘mms’, ‘msnim’, ‘skype’, ‘ssh’, ‘smb’, ‘svn’, ‘ymsg’, ) #ACCEPTABLE_URI_SCHEMES = () # ———- required modules (should come with any Python distribution) ———- import cgi import codecs import copy import datetime import itertools import re import struct import time import types import urllib.request, urllib.parse, urllib.error import urllib.request, urllib.error, urllib.parse import urllib.parse import warnings from html.entities import name2codepoint, codepoint2name, entitydefs import collections try: from io import BytesIO as _StringIO except ImportError: try: from io import StringIO as _StringIO except ImportError: from io 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 ImportError: gzip = None try: import zlib except ImportError: 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 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 from xml.sax.saxutils import escape as _xmlescape except ImportError: _XML_AVAILABLE = 0 def _xmlescape(data,entities={}): data = data.replace(‘&’, ‘&amp;’) data = data.replace(‘>’, ‘&gt;’) data = data.replace(‘<‘, ‘&lt;’) for char, entity in entities: data = data.replace(char, entity) return data else: try: xml.sax.make_parser(PREFERRED_XML_PARSERS) # test for valid parsers except xml.sax.SAXReaderNotAvailable: _XML_AVAILABLE = 0 else: _XML_AVAILABLE = 1 # sgmllib is not available by default in Python 3; if the end user doesn’t have # it available then we’ll lose illformed XML parsing and content santizing try: import sgmllib except ImportError: # This is probably Python 3, which doesn’t include sgmllib anymore _SGML_AVAILABLE = 0 # Mock sgmllib enough to allow subclassing later on class sgmllib(object): class SGMLParser(object): def goahead(self, i): pass def parse_starttag(self, i): pass else: _SGML_AVAILABLE = 1 # sgmllib defines a number of module-level regular expressions that are # insufficient for the XML parsing feedparser needs. Rather than modify # the variables directly in sgmllib, they’re defined here using the same # names, and the compiled code objects of several sgmllib.SGMLParser # methods are copied into _BaseHTMLProcessor so that they execute in # feedparser’s scope instead of sgmllib’s scope. charref = re.compile(‘&#(\d+|[xX][0-9a-fA-F]+);’) tagfind = re.compile(‘[a-zA-Z][-_.:a-zA-Z0-9]*’) attrfind = re.compile( r’\s*([a-zA-Z_][-:.a-zA-Z_0-9]*)[$]?(\s*=\s*’ r'(\'[^\’]*\’|”[^”]*”|[][\-a-zA-Z0-9./,:;+*%?!&$\(\)_#=~\'”@]*))?’ ) # Unfortunately, these must be copied over to prevent NameError exceptions entityref = sgmllib.entityref incomplete = sgmllib.incomplete interesting = sgmllib.interesting shorttag = sgmllib.shorttag shorttagopen = sgmllib.shorttagopen starttagopen = sgmllib.starttagopen class _EndBracketRegEx: def __init__(self): # Overriding the built-in sgmllib.endbracket regex allows the # parser to find angle brackets embedded in element attributes. self.endbracket = re.compile(”'([^'”<>]|”[^”]*”(?=>|/|\s|\w+=)|'[^’]*'(?=>|/|\s|\w+=))*(?=[<>])|.*?(?=[<>])”’) def search(self, target, index=0): match = self.endbracket.match(target, index) if match is not None: # Returning a new object in the calling thread’s context # resolves a thread-safety. return EndBracketMatch(match) return None class EndBracketMatch: def __init__(self, match): self.match = match def start(self, n): return self.match.end(n) endbracket = _EndBracketRegEx() # iconv_codec provides support for more character encodings. # It’s available from http://cjkpython.i18n.org/ try: import iconv_codec except ImportError: pass # chardet library auto-detects character encodings # Download from http://chardet.feedparser.org/ try: import chardet except ImportError: 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 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’, } class FeedParserDict(dict): keymap = {‘channel’: ‘feed’, ‘items’: ‘entries’, ‘guid’: ‘id’, ‘date’: ‘updated’, ‘date_parsed’: ‘updated_parsed’, ‘description’: [‘summary’, ‘subtitle’], ‘description_detail’: [‘summary_detail’, ‘subtitle_detail’], ‘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): ”’ :return: A :class:`FeedParserDict`. ”’ if key == ‘category’: try: return dict.__getitem__(self, ‘tags’)[0][‘term’] except IndexError: raise KeyError(“object doesn’t have key ‘category'”) elif key == ‘enclosures’: norel = lambda link: FeedParserDict([(name,value) for (name,value) in list(link.items()) if name!=’rel’]) return [norel(link) for link in dict.__getitem__(self, ‘links’) if link[‘rel’]==’enclosure’] elif key == ‘license’: for link in dict.__getitem__(self, ‘links’): if link[‘rel’]==’license’ and ‘href’ in link: return link[‘href’] elif key == ‘updated’: # Temporarily help developers out by keeping the old # broken behavior that was reported in issue 310. # This fix was proposed in issue 328. if not dict.__contains__(self, ‘updated’) and \ dict.__contains__(self, ‘published’): warnings.warn(“To avoid breaking existing software while ” “fixing issue 310, a temporary mapping has been created ” “from `updated` to `published` if `updated` doesn’t ” “exist. This fallback will be removed in a future version ” “of feedparser.”, DeprecationWarning) return dict.__getitem__(self, ‘published’) return dict.__getitem__(self, ‘updated’) elif key == ‘updated_parsed’: if not dict.__contains__(self, ‘updated_parsed’) and \ dict.__contains__(self, ‘published_parsed’): warnings.warn(“To avoid breaking existing software while ” “fixing issue 310, a temporary mapping has been created ” “from `updated_parsed` to `published_parsed` if ” “`updated_parsed` doesn’t exist. This fallback will be ” “removed in a future version of feedparser.”, DeprecationWarning) return dict.__getitem__(self, ‘published_parsed’) return dict.__getitem__(self, ‘updated_parsed’) else: realkey = self.keymap.get(key, key) if isinstance(realkey, list): for k in realkey: if dict.__contains__(self, k): return dict.__getitem__(self, k) elif dict.__contains__(self, realkey): return dict.__getitem__(self, realkey) return dict.__getitem__(self, key) def __contains__(self, key): if key in (‘updated’, ‘updated_parsed’): # Temporarily help developers out by keeping the old # broken behavior that was reported in issue 310. # This fix was proposed in issue 328. return dict.__contains__(self, key) try: self.__getitem__(key) except KeyError: return False else: return True has_key = __contains__ def get(self, key, default=None): ”’ :return: A :class:`FeedParserDict`. ”’ try: return self.__getitem__(key) except KeyError: return default def __setitem__(self, key, value): key = self.keymap.get(key, key) if isinstance(key, list): key = key[0] return dict.__setitem__(self, key, value) def setdefault(self, key, value): if key not in self: self[key] = value return value return self[key] def __getattr__(self, key): # __getattribute__() is called first; this will be called # only if an attribute was not already found try: return self.__getitem__(key) except KeyError: raise AttributeError(“object has no attribute ‘%s'” % key) def __hash__(self): return id(self) _cp1252 = { 128: chr(8364), # euro sign 130: chr(8218), # single low-9 quotation mark 131: chr( 402), # latin small letter f with hook 132: chr(8222), # double low-9 quotation mark 133: chr(8230), # horizontal ellipsis 134: chr(8224), # dagger 135: chr(8225), # double dagger 136: chr( 710), # modifier letter circumflex accent 137: chr(8240), # per mille sign 138: chr( 352), # latin capital letter s with caron 139: chr(8249), # single left-pointing angle quotation mark 140: chr( 338), # latin capital ligature oe 142: chr( 381), # latin capital letter z with caron 145: chr(8216), # left single quotation mark 146: chr(8217), # right single quotation mark 147: chr(8220), # left double quotation mark 148: chr(8221), # right double quotation mark 149: chr(8226), # bullet 150: chr(8211), # en dash 151: chr(8212), # em dash 152: chr( 732), # small tilde 153: chr(8482), # trade mark sign 154: chr( 353), # latin small letter s with caron 155: chr(8250), # single right-pointing angle quotation mark 156: chr( 339), # latin small ligature oe 158: chr( 382), # latin small letter z with caron 159: chr( 376), # latin capital letter y with diaeresis } _urifixer = re.compile(‘^([A-Za-z][A-Za-z0-9+-.]*://)(/*)(.*?)’) def _urljoin(base, uri): uri = _urifixer.sub(r’\1\3′, uri) if not isinstance(uri, str): uri = uri.decode(‘utf-8’, ‘ignore’) try: uri = urllib.parse.urljoin(base, uri) except ValueError: uri = ” if not isinstance(uri, str): return uri.decode(‘utf-8’, ‘ignore’) return 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://www.georss.org/georss’: ‘georss’, ‘http://www.opengis.net/gml’: ‘gml’, ‘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’, # Version 1.1.2 of the Media RSS spec added the trailing slash on the namespace ‘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://schemas.pocketsoap.com/rss/myDescModule/’: ‘szf’, ‘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/1999/xlink’: ‘xlink’, ‘http://www.w3.org/XML/1998/namespace’: ‘xml’, ‘http://podlove.org/simple-chapters’: ‘psc’, } _matchnamespaces = {} can_be_relative_uri = set([‘link’, ‘id’, ‘wfw_comment’, ‘wfw_commentrss’, ‘docs’, ‘url’, ‘href’, ‘comments’, ‘icon’, ‘logo’]) can_contain_relative_uris = set([‘content’, ‘title’, ‘summary’, ‘info’, ‘tagline’, ‘subtitle’, ‘copyright’, ‘rights’, ‘description’]) can_contain_dangerous_markup = set([‘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 not self._matchnamespaces: for k, v in list(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 # georss self.ingeometry = 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 self.svgOK = 0 self.title_depth = -1 self.depth = 0 # psc_chapters_flag prevents multiple psc_chapters from being # captured in a single entry or item. The transition states are # None -> True -> False. psc_chapter elements will only be # captured while it is True. self.psc_chapters_flag = None if baselang: self.feeddata[‘language’] = baselang.replace(‘_’,’-‘) # A map of the following form: # { # object_that_value_is_set_on: { # property_name: depth_of_node_property_was_extracted_from, # other_property: depth_of_node_property_was_extracted_from, # }, # } self.property_depth_map = {} def _normalize_attributes(self, kv): k = kv[0].lower() v = k in (‘rel’, ‘type’) and kv[1].lower() or kv[1] # the sgml parser doesn’t handle entities in attributes, nor # does it pass the attribute values through as unicode, while # strict xml parsers do — account for this difference if isinstance(self, _LooseFeedParser): v = v.replace(‘&amp;’, ‘&’) if not isinstance(v, str): v = v.decode(‘utf-8’) return (k, v) def unknown_starttag(self, tag, attrs): # increment depth counter self.depth += 1 # normalize attrs attrs = list(map(self._normalize_attributes, attrs)) # track xml:base and xml:lang attrsD = dict(attrs) baseuri = attrsD.get(‘xml:base’, attrsD.get(‘base’)) or self.baseuri if not isinstance(baseuri, str): baseuri = baseuri.decode(self.encoding, ‘ignore’) # ensure that self.baseuri is always an absolute URI that # uses a whitelisted URI scheme (e.g. not `javscript:`) if self.baseuri: self.baseuri = _makeSafeAbsoluteURI(self.baseuri, baseuri) or self.baseuri else: 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.replace(‘_’,’-‘) 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 not self.contentparams.get(‘type’, ‘xml’).endswith(‘xml’): if tag in (‘xhtml:div’, ‘div’): return # typepad does this 10/2007 # 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’: if tag.find(‘:’) != -1: prefix, tag = tag.split(‘:’, 1) namespace = self.namespacesInUse.get(prefix, ”) if tag==’math’ and namespace==’http://www.w3.org/1998/Math/MathML’: attrs.append((‘xmlns’,namespace)) if tag==’svg’ and namespace==’http://www.w3.org/2000/svg’: attrs.append((‘xmlns’,namespace)) if tag == ‘svg’: self.svgOK += 1 return self.handle_data(‘<%s%s>’ % (tag, self.strattrs(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: # Since there’s no handler or something has gone wrong we explicitly add the element and its attributes unknown_tag = prefix + suffix if len(attrsD) == 0: # No attributes so merge it into the encosing dictionary return self.push(unknown_tag, 1) else: # Has attributes so create it in its own dictionary context = self._getContext() context[unknown_tag] = attrsD def unknown_endtag(self, 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 + ‘_’ if suffix == ‘svg’ and self.svgOK: self.svgOK -= 1 # call special handler (if defined) or default handler methodname = ‘_end_’ + prefix + suffix try: if self.svgOK: raise AttributeError() method = getattr(self, methodname) method() except AttributeError: self.pop(prefix + suffix) # track inline content if self.incontent and not self.contentparams.get(‘type’, ‘xml’).endswith(‘xml’): # element declared itself as escaped markup, but it isn’t really if tag in (‘xhtml:div’, ‘div’): return # typepad does this 10/2007 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] self.depth -= 1 def handle_charref(self, ref): # called for each character reference, e.g. for ‘ ’, 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 = chr(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 ref in (‘lt’, ‘gt’, ‘quot’, ‘amp’, ‘apos’): text = ‘&%s;’ % ref elif ref in self.entities: text = self.entities[ref] if text.startswith(‘&#’) and text.endswith(‘;’): return self.handle_entityref(text) else: try: name2codepoint[ref] except KeyError: text = ‘&%s;’ % ref else: text = chr(name2codepoint[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 self.rawdata[i:i+9] == ‘<![CDATA[‘: k = self.rawdata.find(‘]]>’, i) if k == -1: # CDATA block began but didn’t finish k = len(self.rawdata) return k self.handle_data(_xmlescape(self.rawdata[i+9:k]), 0) return k+3 else: k = self.rawdata.find(‘>’, i) if k >= 0: return k+1 else: # We have an incomplete CDATA block. return k def mapContentType(self, contentType): contentType = contentType.lower() if contentType == ‘text’ or contentType == ‘plain’: 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 not self.version: if (prefix, loweruri) == (None, ‘http://my.netscape.com/rdf/simple/0.9/’): self.version = ‘rss090’ elif loweruri == ‘http://purl.org/rss/1.0/’: self.version = ‘rss10’ elif loweruri == ‘http://www.w3.org/2005/atom’: 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 loweruri in self._matchnamespaces: 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 strattrs(self, attrs): return ”.join([‘ %s=”%s”‘ % (t[0],_xmlescape(t[1],{‘”‘:’&quot;’})) for t in attrs]) 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() if self.version == ‘atom10’ and self.contentparams.get(‘type’, ‘text’) == ‘application/xhtml+xml’: # remove enclosing child element, but only if it is a <div> and # only if all the remaining content is nested underneath it. # This means that the divs would be retained in the following: # <div>foo</div><div>bar</div> while pieces and len(pieces)>1 and not pieces[-1].strip(): del pieces[-1] while pieces and len(pieces)>1 and not pieces[0].strip(): del pieces[0] if pieces and (pieces[0] == ‘<div>’ or pieces[0].startswith(‘<div ‘)) and pieces[-1]=='</div>’: depth = 0 for piece in pieces[:-1]: if piece.startswith(‘</’): depth -= 1 if depth == 0: break elif piece.startswith(‘<‘) and not piece.endswith(‘/>’): depth += 1 else: pieces = pieces[1:-1] # Ensure each piece is a str for Python 3 for (i, v) in enumerate(pieces): if not isinstance(v, str): pieces[i] = v.decode(‘utf-8’) 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 = _base64decode(output) except binascii.Error: pass except binascii.Incomplete: pass except TypeError: # In Python 3, base64 takes and outputs bytes, not str # This may not be the most correct way to accomplish this output = _base64decode(output.encode(‘utf-8’)).decode(‘utf-8’) # resolve relative URIs if (element in self.can_be_relative_uri) and output: # do not resolve guid elements with isPermalink=”false” if not element == ‘id’ or self.guidislink: output = self.resolveURI(output) # decode entities within embedded markup if not self.contentparams.get(‘base64’, 0): output = self.decodeEntities(element, output) # some feed formats require consumers to guess # whether the content is html or plain text if not self.version.startswith(‘atom’) and self.contentparams.get(‘type’) == ‘text/plain’: if self.lookslikehtml(output): self.contentparams[‘type’] = ‘text/html’ # remove temporary cruft from contentparams try: del self.contentparams[‘mode’] except KeyError: pass try: del self.contentparams[‘base64’] except KeyError: pass is_htmlish = self.mapContentType(self.contentparams.get(‘type’, ‘text/html’)) in self.html_types # resolve relative URIs within embedded markup if is_htmlish and RESOLVE_RELATIVE_URIS: if element in self.can_contain_relative_uris: output = _resolveRelativeURIs(output, self.baseuri, self.encoding, self.contentparams.get(‘type’, ‘text/html’)) # sanitize embedded markup if is_htmlish and SANITIZE_HTML: if element in self.can_contain_dangerous_markup: output = _sanitizeHTML(output, self.encoding, self.contentparams.get(‘type’, ‘text/html’)) if self.encoding and not isinstance(output, str): output = output.decode(self.encoding, ‘ignore’) # address common error where people take data that is already # utf-8, presume that it is iso-8859-1, and re-encode it. if self.encoding in (‘utf-8’, ‘utf-8_INVALID_PYTHON_3’) and isinstance(output, str): try: output = output.encode(‘iso-8859-1’).decode(‘utf-8’) except (UnicodeEncodeError, UnicodeDecodeError): pass # map win-1252 extensions to the proper code points if isinstance(output, str): output = output.translate(_cp1252) # categories/tags/keywords/whatever are handled in _end_category or _end_tags or _end_itunes_keywords if element in (‘category’, ‘tags’, ‘itunes_keywords’): return output if element == ‘title’ and -1 < self.title_depth <= self.depth: 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’: if not self.inimage: # query variables in urls in link elements are improperly # converted from `?a=1&b=2` to `?a=1&b;=2` as if they’re # unhandled character references. fix this special case. output = output.replace(‘&amp;’, ‘&’) output = re.sub(“&([A-Za-z0-9_]+);”, “&\g<1>”, output) self.entries[-1][element] = output if output: self.entries[-1][‘links’][-1][‘href’] = output else: if element == ‘description’: element = ‘summary’ old_value_depth = self.property_depth_map.setdefault(self.entries[-1], {}).get(element) if old_value_depth is None or self.depth <= old_value_depth: self.property_depth_map[self.entries[-1]][element] = self.depth 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’: # fix query variables; see above for the explanation output = re.sub(“&([A-Za-z0-9_]+);”, “&\g<1>”, output) context[element] = output 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 if self.lang: self.lang=self.lang.replace(‘_’,’-‘) 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 # a number of elements in a number of RSS variants are nominally plain # text, but this is routinely ignored. This is an attempt to detect # the most common cases. As false positives often result in silent # data loss, this function errs on the conservative side. @staticmethod def lookslikehtml(s): # must have a close tag or an entity reference to qualify if not (re.search(r'</(\w+)>’,s) or re.search(“&#?\w+;”,s)): return # all tags must be in a restricted subset of valid HTML tags if [t for t in re.findall(r'</?(\w+)’,s) if t.lower() not in _HTMLSanitizer.acceptable_elements]: return # all entities must have been defined as valid HTML entities if [e for e in re.findall(r’&(\w+);’, s) if e not in list(entitydefs.keys())]: return return 1 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, overwrite=False): context = self._getContext() if overwrite: context[key] = value else: context.setdefault(key, value) def _start_rss(self, attrsD): versionmap = {‘0.91’: ‘rss091u’, ‘0.92’: ‘rss092’, ‘0.93’: ‘rss093’, ‘0.94’: ‘rss094’} #If we’re here then this is an RSS feed. #If we don’t have a version or have a version that starts with something #other than RSS then there’s been a mistake. Correct it. if not self.version or not self.version.startswith(‘rss’): 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_channel(self, attrsD): self.infeed = 1 self._cdf_common(attrsD) def _cdf_common(self, attrsD): if ‘lastmod’ in attrsD: self._start_modified({}) self.elementstack[-1][-1] = attrsD[‘lastmod’] self._end_modified() if ‘href’ in attrsD: 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): context = self._getContext() if not self.inentry: context.setdefault(‘image’, FeedParserDict()) self.inimage = 1 self.title_depth = -1 self.push(‘image’, 0) def _end_image(self): self.pop(‘image’) self.inimage = 0 def _start_textinput(self, attrsD): context = self._getContext() context.setdefault(‘textinput’, FeedParserDict()) self.intextinput = 1 self.title_depth = -1 self.push(‘textinput’, 0) _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) # Append a new FeedParserDict when expecting an author context = self._getContext() context.setdefault(‘authors’, []) context[‘authors’].append(FeedParserDict()) _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[‘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 ValueError: value = 0 if self.inimage: context = self._getContext() context[‘width’] = value def _start_height(self, attrsD): self.push(‘height’, 0) def _end_height(self): value = self.pop(‘height’) try: value = int(value) except ValueError: value = 0 if self.inimage: context = self._getContext() context[‘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) _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.inimage and ‘image’ in self.feeddata: context = self.feeddata[‘image’] elif self.intextinput: context = self.feeddata[‘textinput’] 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() context.setdefault(‘authors’, [FeedParserDict()]) context[‘authors’][-1][key] = value 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(‘%ss’ % key, [FeedParserDict()])[-1] 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, email = context.get(key), None if not author: return emailmatch = re.search(r”'(([a-zA-Z0-9\_\-\.\+]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?))(\?subject=\S+)?”’, author) if emailmatch: 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.replace(‘<>’, ”) author = author.replace(‘&lt;&gt;’, ”) author = author.strip() if author and (author[0] == ‘(‘): author = author[1:] if author and (author[-1] == ‘)’): author = author[:-1] author = author.strip() if author or email: context.setdefault(‘%s_detail’ % key, detail) if author: detail[‘name’] = author if email: detail[’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 self.title_depth = -1 self.psc_chapters_flag = None id = self._getAttribute(attrsD, ‘rdf:about’) if id: context = self._getContext() context[‘id’] = id self._cdf_common(attrsD) _start_entry = _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_dcterms_valid(self, attrsD): self.push(‘validity’, 1) def _end_dcterms_valid(self): for validity_detail in self.pop(‘validity’).split(‘;’): if ‘=’ in validity_detail: key, value = validity_detail.split(‘=’, 1) if key == ‘start’: self._save(‘validity_start’, value, overwrite=True) self._save(‘validity_start_parsed’, _parse_date(value), overwrite=True) elif key == ‘end’: self._save(‘validity_end’, value, overwrite=True) self._save(‘validity_end_parsed’, _parse_date(value), overwrite=True) def _start_published(self, attrsD): self.push(‘published’, 1) _start_dcterms_issued = _start_published _start_issued = _start_published _start_pubdate = _start_published def _end_published(self): value = self.pop(‘published’) self._save(‘published_parsed’, _parse_date(value), overwrite=True) _end_dcterms_issued = _end_published _end_issued = _end_published _end_pubdate = _end_published def _start_updated(self, attrsD): self.push(‘updated’, 1) _start_modified = _start_updated _start_dcterms_modified = _start_updated _start_dc_date = _start_updated _start_lastbuilddate = _start_updated def _end_updated(self): value = self.pop(‘updated’) parsed_value = _parse_date(value) self._save(‘updated_parsed’, parsed_value, overwrite=True) _end_modified = _end_updated _end_dcterms_modified = _end_updated _end_dc_date = _end_updated _end_lastbuilddate = _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), overwrite=True) _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’)), overwrite=True) # geospatial location, or “where”, from georss.org def _start_georssgeom(self, attrsD): self.push(‘geometry’, 0) context = self._getContext() context[‘where’] = FeedParserDict() _start_georss_point = _start_georssgeom _start_georss_line = _start_georssgeom _start_georss_polygon = _start_georssgeom _start_georss_box = _start_georssgeom def _save_where(self, geometry): context = self._getContext() context[‘where’].update(geometry) def _end_georss_point(self): geometry = _parse_georss_point(self.pop(‘geometry’)) if geometry: self._save_where(geometry) def _end_georss_line(self): geometry = _parse_georss_line(self.pop(‘geometry’)) if geometry: self._save_where(geometry) def _end_georss_polygon(self): this = self.pop(‘geometry’) geometry = _parse_georss_polygon(this) if geometry: self._save_where(geometry) def _end_georss_box(self): geometry = _parse_georss_box(self.pop(‘geometry’)) if geometry: self._save_where(geometry) def _start_where(self, attrsD): self.push(‘where’, 0) context = self._getContext() context[‘where’] = FeedParserDict() _start_georss_where = _start_where def _parse_srs_attrs(self, attrsD): srsName = attrsD.get(‘srsname’) try: srsDimension = int(attrsD.get(‘srsdimension’, ‘2’)) except ValueError: srsDimension = 2 context = self._getContext() context[‘where’][‘srsName’] = srsName context[‘where’][‘srsDimension’] = srsDimension def _start_gml_point(self, attrsD): self._parse_srs_attrs(attrsD) self.ingeometry = 1 self.push(‘geometry’, 0) def _start_gml_linestring(self, attrsD): self._parse_srs_attrs(attrsD) self.ingeometry = ‘linestring’ self.push(‘geometry’, 0) def _start_gml_polygon(self, attrsD): self._parse_srs_attrs(attrsD) self.push(‘geometry’, 0) def _start_gml_exterior(self, attrsD): self.push(‘geometry’, 0) def _start_gml_linearring(self, attrsD): self.ingeometry = ‘polygon’ self.push(‘geometry’, 0) def _start_gml_pos(self, attrsD): self.push(‘pos’, 0) def _end_gml_pos(self): this = self.pop(‘pos’) context = self._getContext() srsName = context[‘where’].get(‘srsName’) srsDimension = context[‘where’].get(‘srsDimension’, 2) swap = True if srsName and “EPSG” in srsName: epsg = int(srsName.split(“:”)[-1]) swap = bool(epsg in _geogCS) geometry = _parse_georss_point(this, swap=swap, dims=srsDimension) if geometry: self._save_where(geometry) def _start_gml_poslist(self, attrsD): self.push(‘pos’, 0) def _end_gml_poslist(self): this = self.pop(‘pos’) context = self._getContext() srsName = context[‘where’].get(‘srsName’) srsDimension = context[‘where’].get(‘srsDimension’, 2) swap = True if srsName and “EPSG” in srsName: epsg = int(srsName.split(“:”)[-1]) swap = bool(epsg in _geogCS) geometry = _parse_poslist( this, self.ingeometry, swap=swap, dims=srsDimension) if geometry: self._save_where(geometry) def _end_geom(self): self.ingeometry = 0 self.pop(‘geometry’) _end_gml_point = _end_geom _end_gml_linestring = _end_geom _end_gml_linearring = _end_geom _end_gml_exterior = _end_geom _end_gml_polygon = _end_geom def _end_where(self): self.pop(‘where’) _end_georss_where = _end_where # end geospatial def _start_cc_license(self, attrsD): context = self._getContext() value = self._getAttribute(attrsD, ‘rdf:resource’) attrsD = FeedParserDict() attrsD[‘rel’] = ‘license’ if value: attrsD[‘href’]=value context.setdefault(‘links’, []).append(attrsD) def _start_creativecommons_license(self, attrsD): self.push(‘license’, 1) _start_creativeCommons_license = _start_creativecommons_license def _end_creativecommons_license(self): value = self.pop(‘license’) context = self._getContext() attrsD = FeedParserDict() attrsD[‘rel’] = ‘license’ if value: attrsD[‘href’] = value context.setdefault(‘links’, []).append(attrsD) del context[‘license’] _end_creativeCommons_license = _end_creativecommons_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(value) def _start_tags(self, attrsD): # This is a completely-made up element. Its semantics are determined # only by a single feed that precipitated bug report 392 on Google Code. # In short, this is junk code. self.push(‘tags’, 1) def _end_tags(self): for term in self.pop(‘tags’).split(‘,’): self._addTag(term.strip(), None, None) def _start_category(self, 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 _start_media_category(self, attrsD): attrsD.setdefault(‘scheme’, ‘http://search.yahoo.com/mrss/category_schema’) self._start_category(attrsD) def _end_itunes_keywords(self): for term in self.pop(‘itunes_keywords’).split(‘,’): if term.strip(): self._addTag(term.strip(), ‘http://www.itunes.com/’, None) def _end_media_keywords(self): for term in self.pop(‘media_keywords’).split(‘,’): if term.strip(): self._addTag(term.strip(), None, 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 _end_media_category = _end_category def _start_cloud(self, attrsD): self._getContext()[‘cloud’] = FeedParserDict(attrsD) def _start_link(self, attrsD): attrsD.setdefault(‘rel’, ‘alternate’) if attrsD[‘rel’] == ‘self’: attrsD.setdefault(‘type’, ‘application/atom+xml’) else: attrsD.setdefault(‘type’, ‘text/html’) context = self._getContext() attrsD = self._itsAnHrefDamnIt(attrsD) if ‘href’ in attrsD: attrsD[‘href’] = self.resolveURI(attrsD[‘href’]) expectingText = self.infeed or self.inentry or self.insource context.setdefault(‘links’, []) if not (self.inentry and self.inimage): context[‘links’].append(FeedParserDict(attrsD)) if ‘href’ in attrsD: 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) def _end_link(self): value = self.pop(‘link’) def _start_guid(self, attrsD): self.guidislink = (attrsD.get(‘ispermalink’, ‘true’) == ‘true’) self.push(‘id’, 1) _start_id = _start_guid def _end_guid(self): value = self.pop(‘id’) self._save(‘guidislink’, self.guidislink and ‘link’ not in self._getContext()) 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) _end_id = _end_guid def _start_title(self, attrsD): if self.svgOK: return self.unknown_starttag(‘title’, list(attrsD.items())) 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): if self.svgOK: return value = self.popContent(‘title’) if not value: return self.title_depth = self.depth _end_dc_title = _end_title def _end_media_title(self): title_depth = self.title_depth self._end_title() self.title_depth = title_depth def _start_description(self, attrsD): context = self._getContext() if ‘summary’ in context: self._summaryKey = ‘content’ self._start_content(attrsD) else: self.pushContent(‘description’, attrsD, ‘text/html’, self.infeed or self.inentry or self.insource) _start_dc_description = _start_description _start_media_description = _start_description 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’) self._summaryKey = None _end_abstract = _end_description _end_dc_description = _end_description _end_media_description = _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 ‘href’ in attrsD: 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 ‘generator_detail’ in context: 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 ‘summary’ in context: 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) context = self._getContext() attrsD[‘rel’] = ‘enclosure’ context.setdefault(‘links’, []).append(FeedParserDict(attrsD)) def _start_source(self, attrsD): if ‘url’ in attrsD: # This means that we’re processing a source element from an RSS 2.0 feed self.sourcedata[‘href’] = attrsD[‘url’] self.push(‘source’, 1) self.insource = 1 self.title_depth = -1 def _end_source(self): self.insource = 0 value = self.pop(‘source’) if value: self.sourcedata[‘title’] = value 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_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): copyToSummary = self.mapContentType(self.contentparams.get(‘type’)) in ([‘text/plain’] + self.html_types) value = self.popContent(‘content’) if copyToSummary: self._save(‘summary’, value) _end_body = _end_content _end_xhtml_body = _end_content _end_content_encoded = _end_content _end_fullitem = _end_content def _start_itunes_image(self, attrsD): self.push(‘itunes_image’, 0) if attrsD.get(‘href’): self._getContext()[‘image’] = FeedParserDict({‘href’: attrsD.get(‘href’)}) elif attrsD.get(‘url’): self._getContext()[‘image’] = FeedParserDict({‘href’: attrsD.get(‘url’)}) _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) # Convert ‘yes’ -> True, ‘clean’ to False, and any other value to None # False and None both evaluate as False, so the difference can be ignored # by applications that only need to know if the content is explicit. self._getContext()[‘itunes_explicit’] = (None, False, True)[(value == ‘yes’ and 2) or value == ‘clean’ or 0] def _start_media_group(self, attrsD): # don’t do anything, but don’t break the enclosed tags either pass def _start_media_rating(self, attrsD): context = self._getContext() context.setdefault(‘media_rating’, attrsD) self.push(‘rating’, 1) def _end_media_rating(self): rating = self.pop(‘rating’) if rating is not None and rating.strip(): context = self._getContext() context[‘media_rating’][‘content’] = rating def _start_media_credit(self, attrsD): context = self._getContext() context.setdefault(‘media_credit’, []) context[‘media_credit’].append(attrsD) self.push(‘credit’, 1) def _end_media_credit(self): credit = self.pop(‘credit’) if credit != None and len(credit.strip()) != 0: context = self._getContext() context[‘media_credit’][-1][‘content’] = credit def _start_media_restriction(self, attrsD): context = self._getContext() context.setdefault(‘media_restriction’, attrsD) self.push(‘restriction’, 1) def _end_media_restriction(self): restriction = self.pop(‘restriction’) if restriction != None and len(restriction.strip()) != 0: context = self._getContext() context[‘media_restriction’][‘content’] = [cc.strip().lower() for cc in restriction.split(‘ ‘)] def _start_media_license(self, attrsD): context = self._getContext() context.setdefault(‘media_license’, attrsD) self.push(‘license’, 1) def _end_media_license(self): license = self.pop(‘license’) if license != None and len(license.strip()) != 0: context = self._getContext() context[‘media_license’][‘content’] = license def _start_media_content(self, attrsD): context = self._getContext() context.setdefault(‘media_content’, []) context[‘media_content’].append(attrsD) def _start_media_thumbnail(self, attrsD): context = self._getContext() context.setdefault(‘media_thumbnail’, []) self.push(‘url’, 1) # new context[‘media_thumbnail’].append(attrsD) def _end_media_thumbnail(self): url = self.pop(‘url’) context = self._getContext() if url != None and len(url.strip()) != 0: if ‘url’ not in context[‘media_thumbnail’][-1]: context[‘media_thumbnail’][-1][‘url’] = url def _start_media_player(self, attrsD): self.push(‘media_player’, 0) self._getContext()[‘media_player’] = FeedParserDict(attrsD) def _end_media_player(self): value = self.pop(‘media_player’) context = self._getContext() context[‘media_player’][‘content’] = value def _start_newlocation(self, attrsD): self.push(‘newlocation’, 1) def _end_newlocation(self): url = self.pop(‘newlocation’) context = self._getContext() # don’t set newlocation if the context isn’t right if context is not self.feeddata: return context[‘newlocation’] = _makeSafeAbsoluteURI(self.baseuri, url.strip()) def _start_psc_chapters(self, attrsD): if self.psc_chapters_flag is None: # Transition from None -> True self.psc_chapters_flag = True attrsD[‘chapters’] = [] self._getContext()[‘psc_chapters’] = FeedParserDict(attrsD) def _end_psc_chapters(self): # Transition from True -> False self.psc_chapters_flag = False def _start_psc_chapter(self, attrsD): if self.psc_chapters_flag: start = self._getAttribute(attrsD, ‘start’) attrsD[‘start_parsed’] = _parse_psc_chapter_start(start) context = self._getContext()[‘psc_chapters’] context[‘chapters’].append(FeedParserDict(attrsD)) if _XML_AVAILABLE: class _StrictFeedParser(_FeedParserMixin, xml.sax.handler.ContentHandler): def __init__(self, baseuri, baselang, encoding): xml.sax.handler.ContentHandler.__init__(self) _FeedParserMixin.__init__(self, baseuri, baselang, encoding) self.bozo = 0 self.exc = None self.decls = {} def startPrefixMapping(self, prefix, uri): if not uri: return # Jython uses ” instead of None; standardize on None prefix = prefix or None self.trackNamespace(prefix, uri) if prefix and uri == ‘http://www.w3.org/1999/xlink’: self.decls[‘xmlns:’ + 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 givenprefix not in self.namespacesInUse: raise UndeclaredNamespace(“‘%s’ is not associated with a namespace” % givenprefix) 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, self.decls = self.decls, {} if localname==’math’ and namespace==’http://www.w3.org/1998/Math/MathML’: attrsD[‘xmlns’]=namespace if localname==’svg’ and namespace==’http://www.w3.org/2000/svg’: attrsD[‘xmlns’]=namespace if prefix: localname = prefix.lower() + ‘:’ + localname elif namespace and not qname: #Expat for name,value in list(self.namespacesInUse.items()): if name and value == namespace: localname = name + ‘:’ + localname break for (namespace, attrlocalname), attrvalue in list(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) localname = str(localname).lower() self.unknown_starttag(localname, list(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 elif namespace and not qname: #Expat for name,value in list(self.namespacesInUse.items()): if name and value == namespace: localname = name + ‘:’ + localname break localname = str(localname).lower() self.unknown_endtag(localname) def error(self, exc): self.bozo = 1 self.exc = exc # drv_libxml2 calls warning() in some cases warning = error def fatalError(self, exc): self.error(exc) raise exc class _BaseHTMLProcessor(sgmllib.SGMLParser): special = re.compile(”'[<>'”]”’) bare_ampersand = re.compile(“&(?!#\d+;|#x[0-9a-fA-F]+;|\w+;)”) elements_no_end_tag = set([ ‘area’, ‘base’, ‘basefont’, ‘br’, ‘col’, ‘command’, ’embed’, ‘frame’, ‘hr’, ‘img’, ‘input’, ‘isindex’, ‘keygen’, ‘link’, ‘meta’, ‘param’, ‘source’, ‘track’, ‘wbr’ ]) def __init__(self, encoding, _type): self.encoding = encoding self._type = _type 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 + ‘>’ # By declaring these methods and overriding their compiled code # with the code from sgmllib, the original code will execute in # feedparser’s scope instead of sgmllib’s. This means that the # `tagfind` and `charref` regular expressions will be found as # they’re declared above, not as they’re declared in sgmllib. def goahead(self, i): pass goahead.__code__ = sgmllib.SGMLParser.goahead.__code__ def __parse_starttag(self, i): pass __parse_starttag.__code__ = sgmllib.SGMLParser.parse_starttag.__code__ def parse_starttag(self,i): j = self.__parse_starttag(i) if self._type == ‘application/xhtml+xml’: if j>2 and self.rawdata[j-2:j]==’/>’: self.unknown_endtag(self.lasttag) return j 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) data = data.replace(‘'’, “‘”) data = data.replace(‘"’, ‘”‘) try: bytes if bytes is str: raise NameError self.encoding = self.encoding + ‘_INVALID_PYTHON_3’ except NameError: if self.encoding and isinstance(data, str): data = data.encode(self.encoding) sgmllib.SGMLParser.feed(self, data) sgmllib.SGMLParser.close(self) def normalize_attrs(self, attrs): if not attrs: return attrs # utility method to be called by descendants attrs = list(dict([(k.lower(), v) for k, v in attrs]).items()) attrs = [(k, k in (‘rel’, ‘type’) and v.lower() or v) for k, v in attrs] attrs.sort() 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’)] uattrs = [] strattrs=” if attrs: for key, value in attrs: value=value.replace(‘>’,’&gt;’).replace(‘<‘,’&lt;’).replace(‘”‘,’&quot;’) value = self.bare_ampersand.sub(“&amp;”, value) # thanks to Kevin Marks for this breathtaking hack to deal with (valid) high-bit attribute values in UTF-8 feeds if not isinstance(value, str): value = value.decode(self.encoding, ‘ignore’) try: # Currently, in Python 3 the key is already a str, and cannot be decoded again uattrs.append((str(key, self.encoding), value)) except TypeError: uattrs.append((key, value)) strattrs = ”.join([‘ %s=”%s”‘ % (key, value) for key, value in uattrs]) if self.encoding: try: strattrs = strattrs.encode(self.encoding) except (UnicodeEncodeError, LookupError): pass if tag in self.elements_no_end_tag: self.pieces.append(‘<%s%s />’ % (tag, strattrs)) else: self.pieces.append(‘<%s%s>’ % (tag, strattrs)) 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(“</%s>” % tag) def handle_charref(self, ref): # called for each character reference, e.g. for ‘ ’, ref will be ‘160’ # Reconstruct the original character reference. ref = ref.lower() if ref.startswith(‘x’): value = int(ref[1:], 16) else: value = int(ref) if value in _cp1252: self.pieces.append(‘&#%s;’ % hex(ord(_cp1252[value]))[1:]) else: self.pieces.append(‘&#%s;’ % ref) def handle_entityref(self, ref): # called for each entity reference, e.g. for ‘&copy;’, ref will be ‘copy’ # Reconstruct the original entity reference. if ref in name2codepoint or ref == ‘apos’: self.pieces.append(‘&%s;’ % ref) else: self.pieces.append(‘&amp;%s’ % ref) 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. 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(‘<!–%s–>’ % text) def handle_pi(self, text): # called for each processing instruction, e.g. <?instruction> # Reconstruct original processing instruction. self.pieces.append(‘<?%s>’ % text) 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(‘<!%s>’ % text) _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 convert_charref(self, name): return ‘&#%s;’ % name def convert_entityref(self, name): return ‘&%s;’ % name def output(self): ”’Return processed HTML as a single string”’ return ”.join([str(p) for p in self.pieces]) def parse_declaration(self, i): try: return sgmllib.SGMLParser.parse_declaration(self, i) except sgmllib.SGMLParseError: # escape the doctype declaration and continue parsing self.handle_data(‘&lt;’) return i+1 class _LooseFeedParser(_FeedParserMixin, _BaseHTMLProcessor): def __init__(self, baseuri, baselang, encoding, entities): sgmllib.SGMLParser.__init__(self) _FeedParserMixin.__init__(self, baseuri, baselang, encoding) _BaseHTMLProcessor.__init__(self, encoding, ‘application/xhtml+xml’) self.entities=entities def decodeEntities(self, element, data): data = data.replace(‘<’, ‘&lt;’) data = data.replace(‘<’, ‘&lt;’) data = data.replace(‘<’, ‘&lt;’) data = data.replace(‘>’, ‘&gt;’) data = data.replace(‘>’, ‘&gt;’) data = data.replace(‘>’, ‘&gt;’) data = data.replace(‘&’, ‘&amp;’) data = data.replace(‘&’, ‘&amp;’) data = data.replace(‘"’, ‘&quot;’) data = data.replace(‘"’, ‘&quot;’) data = data.replace(‘'’, ‘&apos;’) data = data.replace(‘'’, ‘&apos;’) if 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;’, “‘”) data = data.replace(‘/’, ‘/’) data = data.replace(‘/’, ‘/’) return data def strattrs(self, attrs): return ”.join([‘ %s=”%s”‘ % (n,v.replace(‘”‘,’&quot;’)) for n,v in attrs]) class _RelativeURIResolver(_BaseHTMLProcessor): relative_uris = set([(‘a’, ‘href’), (‘applet’, ‘codebase’), (‘area’, ‘href’), (‘audio’, ‘src’), (‘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’), (‘source’, ‘src’), (‘video’, ‘poster’), (‘video’, ‘src’)]) def __init__(self, baseuri, encoding, _type): _BaseHTMLProcessor.__init__(self, encoding, _type) self.baseuri = baseuri def resolveURI(self, uri): return _makeSafeAbsoluteURI(self.baseuri, uri.strip()) 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, _type): if not _SGML_AVAILABLE: return htmlSource p = _RelativeURIResolver(baseURI, encoding, _type) p.feed(htmlSource) return p.output() def _makeSafeAbsoluteURI(base, rel=None): # bail if ACCEPTABLE_URI_SCHEMES is empty if not ACCEPTABLE_URI_SCHEMES: return _urljoin(base, rel or ”) if not base: return rel or ” if not rel: try: scheme = urllib.parse.urlparse(base)[0] except ValueError: return ” if not scheme or scheme in ACCEPTABLE_URI_SCHEMES: return base return ” uri = _urljoin(base, rel) if uri.strip().split(‘:’, 1)[0] not in ACCEPTABLE_URI_SCHEMES: return ” return uri class _HTMLSanitizer(_BaseHTMLProcessor): acceptable_elements = set([‘a’, ‘abbr’, ‘acronym’, ‘address’, ‘area’, ‘article’, ‘aside’, ‘audio’, ‘b’, ‘big’, ‘blockquote’, ‘br’, ‘button’, ‘canvas’, ‘caption’, ‘center’, ‘cite’, ‘code’, ‘col’, ‘colgroup’, ‘command’, ‘datagrid’, ‘datalist’, ‘dd’, ‘del’, ‘details’, ‘dfn’, ‘dialog’, ‘dir’, ‘div’, ‘dl’, ‘dt’, ’em’, ‘event-source’, ‘fieldset’, ‘figcaption’, ‘figure’, ‘footer’, ‘font’, ‘form’, ‘header’, ‘h1’, ‘h2’, ‘h3’, ‘h4’, ‘h5’, ‘h6’, ‘hr’, ‘i’, ‘img’, ‘input’, ‘ins’, ‘keygen’, ‘kbd’, ‘label’, ‘legend’, ‘li’, ‘m’, ‘map’, ‘menu’, ‘meter’, ‘multicol’, ‘nav’, ‘nextid’, ‘ol’, ‘output’, ‘optgroup’, ‘option’, ‘p’, ‘pre’, ‘progress’, ‘q’, ‘s’, ‘samp’, ‘section’, ‘select’, ‘small’, ‘sound’, ‘source’, ‘spacer’, ‘span’, ‘strike’, ‘strong’, ‘sub’, ‘sup’, ‘table’, ‘tbody’, ‘td’, ‘textarea’, ‘time’, ‘tfoot’, ‘th’, ‘thead’, ‘tr’, ‘tt’, ‘u’, ‘ul’, ‘var’, ‘video’, ‘noscript’]) acceptable_attributes = set([‘abbr’, ‘accept’, ‘accept-charset’, ‘accesskey’, ‘action’, ‘align’, ‘alt’, ‘autocomplete’, ‘autofocus’, ‘axis’, ‘background’, ‘balance’, ‘bgcolor’, ‘bgproperties’, ‘border’, ‘bordercolor’, ‘bordercolordark’, ‘bordercolorlight’, ‘bottompadding’, ‘cellpadding’, ‘cellspacing’, ‘ch’, ‘challenge’, ‘char’, ‘charoff’, ‘choff’, ‘charset’, ‘checked’, ‘cite’, ‘class’, ‘clear’, ‘color’, ‘cols’, ‘colspan’, ‘compact’, ‘contenteditable’, ‘controls’, ‘coords’, ‘data’, ‘datafld’, ‘datapagesize’, ‘datasrc’, ‘datetime’, ‘default’, ‘delay’, ‘dir’, ‘disabled’, ‘draggable’, ‘dynsrc’, ‘enctype’, ‘end’, ‘face’, ‘for’, ‘form’, ‘frame’, ‘galleryimg’, ‘gutter’, ‘headers’, ‘height’, ‘hidefocus’, ‘hidden’, ‘high’, ‘href’, ‘hreflang’, ‘hspace’, ‘icon’, ‘id’, ‘inputmode’, ‘ismap’, ‘keytype’, ‘label’, ‘leftspacing’, ‘lang’, ‘list’, ‘longdesc’, ‘loop’, ‘loopcount’, ‘loopend’, ‘loopstart’, ‘low’, ‘lowsrc’, ‘max’, ‘maxlength’, ‘media’, ‘method’, ‘min’, ‘multiple’, ‘name’, ‘nohref’, ‘noshade’, ‘nowrap’, ‘open’, ‘optimum’, ‘pattern’, ‘ping’, ‘point-size’, ‘poster’, ‘pqg’, ‘preload’, ‘prompt’, ‘radiogroup’, ‘readonly’, ‘rel’, ‘repeat-max’, ‘repeat-min’, ‘replace’, ‘required’, ‘rev’, ‘rightspacing’, ‘rows’, ‘rowspan’, ‘rules’, ‘scope’, ‘selected’, ‘shape’, ‘size’, ‘span’, ‘src’, ‘start’, ‘step’, ‘summary’, ‘suppress’, ‘tabindex’, ‘target’, ‘template’, ‘title’, ‘toppadding’, ‘type’, ‘unselectable’, ‘usemap’, ‘urn’, ‘valign’, ‘value’, ‘variable’, ‘volume’, ‘vspace’, ‘vrml’, ‘width’, ‘wrap’, ‘xml:lang’]) unacceptable_elements_with_end_tag = set([‘script’, ‘applet’, ‘style’]) acceptable_css_properties = set([‘azimuth’, ‘background-color’, ‘border-bottom-color’, ‘border-collapse’, ‘border-color’, ‘border-left-color’, ‘border-right-color’, ‘border-top-color’, ‘clear’, ‘color’, ‘cursor’, ‘direction’, ‘display’, ‘elevation’, ‘float’, ‘font’, ‘font-family’, ‘font-size’, ‘font-style’, ‘font-variant’, ‘font-weight’, ‘height’, ‘letter-spacing’, ‘line-height’, ‘overflow’, ‘pause’, ‘pause-after’, ‘pause-before’, ‘pitch’, ‘pitch-range’, ‘richness’, ‘speak’, ‘speak-header’, ‘speak-numeral’, ‘speak-punctuation’, ‘speech-rate’, ‘stress’, ‘text-align’, ‘text-decoration’, ‘text-indent’, ‘unicode-bidi’, ‘vertical-align’, ‘voice-family’, ‘volume’, ‘white-space’, ‘width’]) # survey of common keywords found in feeds acceptable_css_keywords = set([‘auto’, ‘aqua’, ‘black’, ‘block’, ‘blue’, ‘bold’, ‘both’, ‘bottom’, ‘brown’, ‘center’, ‘collapse’, ‘dashed’, ‘dotted’, ‘fuchsia’, ‘gray’, ‘green’, ‘!important’, ‘italic’, ‘left’, ‘lime’, ‘maroon’, ‘medium’, ‘none’, ‘navy’, ‘normal’, ‘nowrap’, ‘olive’, ‘pointer’, ‘purple’, ‘red’, ‘right’, ‘solid’, ‘silver’, ‘teal’, ‘top’, ‘transparent’, ‘underline’, ‘white’, ‘yellow’]) valid_css_values = re.compile(‘^(#[0-9a-f]+|rgb\(\d+%?,\d*%?,?\d*%?\)?|’ + ‘\d{0,2}\.?\d{0,2}(cm|em|ex|in|mm|pc|pt|px|%|,|\))?)$’) mathml_elements = set([ ‘annotation’, ‘annotation-xml’, ‘maction’, ‘maligngroup’, ‘malignmark’, ‘math’, ‘menclose’, ‘merror’, ‘mfenced’, ‘mfrac’, ‘mglyph’, ‘mi’, ‘mlabeledtr’, ‘mlongdiv’, ‘mmultiscripts’, ‘mn’, ‘mo’, ‘mover’, ‘mpadded’, ‘mphantom’, ‘mprescripts’, ‘mroot’, ‘mrow’, ‘ms’, ‘mscarries’, ‘mscarry’, ‘msgroup’, ‘msline’, ‘mspace’, ‘msqrt’, ‘msrow’, ‘mstack’, ‘mstyle’, ‘msub’, ‘msubsup’, ‘msup’, ‘mtable’, ‘mtd’, ‘mtext’, ‘mtr’, ‘munder’, ‘munderover’, ‘none’, ‘semantics’, ]) mathml_attributes = set([ ‘accent’, ‘accentunder’, ‘actiontype’, ‘align’, ‘alignmentscope’, ‘altimg’, ‘altimg-height’, ‘altimg-valign’, ‘altimg-width’, ‘alttext’, ‘bevelled’, ‘charalign’, ‘close’, ‘columnalign’, ‘columnlines’, ‘columnspacing’, ‘columnspan’, ‘columnwidth’, ‘crossout’, ‘decimalpoint’, ‘denomalign’, ‘depth’, ‘dir’, ‘display’, ‘displaystyle’, ‘edge’, ‘encoding’, ‘equalcolumns’, ‘equalrows’, ‘fence’, ‘fontstyle’, ‘fontweight’, ‘form’, ‘frame’, ‘framespacing’, ‘groupalign’, ‘height’, ‘href’, ‘id’, ‘indentalign’, ‘indentalignfirst’, ‘indentalignlast’, ‘indentshift’, ‘indentshiftfirst’, ‘indentshiftlast’, ‘indenttarget’, ‘infixlinebreakstyle’, ‘largeop’, ‘length’, ‘linebreak’, ‘linebreakmultchar’, ‘linebreakstyle’, ‘lineleading’, ‘linethickness’, ‘location’, ‘longdivstyle’, ‘lquote’, ‘lspace’, ‘mathbackground’, ‘mathcolor’, ‘mathsize’, ‘mathvariant’, ‘maxsize’, ‘minlabelspacing’, ‘minsize’, ‘movablelimits’, ‘notation’, ‘numalign’, ‘open’, ‘other’, ‘overflow’, ‘position’, ‘rowalign’, ‘rowlines’, ‘rowspacing’, ‘rowspan’, ‘rquote’, ‘rspace’, ‘scriptlevel’, ‘scriptminsize’, ‘scriptsizemultiplier’, ‘selection’, ‘separator’, ‘separators’, ‘shift’, ‘side’, ‘src’, ‘stackalign’, ‘stretchy’, ‘subscriptshift’, ‘superscriptshift’, ‘symmetric’, ‘voffset’, ‘width’, ‘xlink:href’, ‘xlink:show’, ‘xlink:type’, ‘xmlns’, ‘xmlns:xlink’, ]) # svgtiny – foreignObject + linearGradient + radialGradient + stop svg_elements = set([‘a’, ‘animate’, ‘animateColor’, ‘animateMotion’, ‘animateTransform’, ‘circle’, ‘defs’, ‘desc’, ‘ellipse’, ‘foreignObject’, ‘font-face’, ‘font-face-name’, ‘font-face-src’, ‘g’, ‘glyph’, ‘hkern’, ‘linearGradient’, ‘line’, ‘marker’, ‘metadata’, ‘missing-glyph’, ‘mpath’, ‘path’, ‘polygon’, ‘polyline’, ‘radialGradient’, ‘rect’, ‘set’, ‘stop’, ‘svg’, ‘switch’, ‘text’, ‘title’, ‘tspan’, ‘use’]) # svgtiny + class + opacity + offset + xmlns + xmlns:xlink svg_attributes = set([‘accent-height’, ‘accumulate’, ‘additive’, ‘alphabetic’, ‘arabic-form’, ‘ascent’, ‘attributeName’, ‘attributeType’, ‘baseProfile’, ‘bbox’, ‘begin’, ‘by’, ‘calcMode’, ‘cap-height’, ‘class’, ‘color’, ‘color-rendering’, ‘content’, ‘cx’, ‘cy’, ‘d’, ‘dx’, ‘dy’, ‘descent’, ‘display’, ‘dur’, ‘end’, ‘fill’, ‘fill-opacity’, ‘fill-rule’, ‘font-family’, ‘font-size’, ‘font-stretch’, ‘font-style’, ‘font-variant’, ‘font-weight’, ‘from’, ‘fx’, ‘fy’, ‘g1’, ‘g2’, ‘glyph-name’, ‘gradientUnits’, ‘hanging’, ‘height’, ‘horiz-adv-x’, ‘horiz-origin-x’, ‘id’, ‘ideographic’, ‘k’, ‘keyPoints’, ‘keySplines’, ‘keyTimes’, ‘lang’, ‘mathematical’, ‘marker-end’, ‘marker-mid’, ‘marker-start’, ‘markerHeight’, ‘markerUnits’, ‘markerWidth’, ‘max’, ‘min’, ‘name’, ‘offset’, ‘opacity’, ‘orient’, ‘origin’, ‘overline-position’, ‘overline-thickness’, ‘panose-1’, ‘path’, ‘pathLength’, ‘points’, ‘preserveAspectRatio’, ‘r’, ‘refX’, ‘refY’, ‘repeatCount’, ‘repeatDur’, ‘requiredExtensions’, ‘requiredFeatures’, ‘restart’, ‘rotate’, ‘rx’, ‘ry’, ‘slope’, ‘stemh’, ‘stemv’, ‘stop-color’, ‘stop-opacity’, ‘strikethrough-position’, ‘strikethrough-thickness’, ‘stroke’, ‘stroke-dasharray’, ‘stroke-dashoffset’, ‘stroke-linecap’, ‘stroke-linejoin’, ‘stroke-miterlimit’, ‘stroke-opacity’, ‘stroke-width’, ‘systemLanguage’, ‘target’, ‘text-anchor’, ‘to’, ‘transform’, ‘type’, ‘u1’, ‘u2’, ‘underline-position’, ‘underline-thickness’, ‘unicode’, ‘unicode-range’, ‘units-per-em’, ‘values’, ‘version’, ‘viewBox’, ‘visibility’, ‘width’, ‘widths’, ‘x’, ‘x-height’, ‘x1’, ‘x2’, ‘xlink:actuate’, ‘xlink:arcrole’, ‘xlink:href’, ‘xlink:role’, ‘xlink:show’, ‘xlink:title’, ‘xlink:type’, ‘xml:base’, ‘xml:lang’, ‘xml:space’, ‘xmlns’, ‘xmlns:xlink’, ‘y’, ‘y1’, ‘y2’, ‘zoomAndPan’]) svg_attr_map = None svg_elem_map = None acceptable_svg_properties = set([ ‘fill’, ‘fill-opacity’, ‘fill-rule’, ‘stroke’, ‘stroke-width’, ‘stroke-linecap’, ‘stroke-linejoin’, ‘stroke-opacity’]) def reset(self): _BaseHTMLProcessor.reset(self) self.unacceptablestack = 0 self.mathmlOK = 0 self.svgOK = 0 def unknown_starttag(self, tag, attrs): acceptable_attributes = self.acceptable_attributes keymap = {} if not tag in self.acceptable_elements or self.svgOK: if tag in self.unacceptable_elements_with_end_tag: self.unacceptablestack += 1 # add implicit namespaces to html5 inline svg/mathml if self._type.endswith(‘html’): if not dict(attrs).get(‘xmlns’): if tag==’svg’: attrs.append( (‘xmlns’,’http://www.w3.org/2000/svg’) ) if tag==’math’: attrs.append( (‘xmlns’,’http://www.w3.org/1998/Math/MathML’) ) # not otherwise acceptable, perhaps it is MathML or SVG? if tag==’math’ and (‘xmlns’,’http://www.w3.org/1998/Math/MathML’) in attrs: self.mathmlOK += 1 if tag==’svg’ and (‘xmlns’,’http://www.w3.org/2000/svg’) in attrs: self.svgOK += 1 # chose acceptable attributes based on tag class, else bail if self.mathmlOK and tag in self.mathml_elements: acceptable_attributes = self.mathml_attributes elif self.svgOK and tag in self.svg_elements: # for most vocabularies, lowercasing is a good idea. Many # svg elements, however, are camel case if not self.svg_attr_map: lower=[attr.lower() for attr in self.svg_attributes] mix=[a for a in self.svg_attributes if a not in lower] self.svg_attributes = lower self.svg_attr_map = dict([(a.lower(),a) for a in mix]) lower=[attr.lower() for attr in self.svg_elements] mix=[a for a in self.svg_elements if a not in lower] self.svg_elements = lower self.svg_elem_map = dict([(a.lower(),a) for a in mix]) acceptable_attributes = self.svg_attributes tag = self.svg_elem_map.get(tag,tag) keymap = self.svg_attr_map elif not tag in self.acceptable_elements: return # declare xlink namespace, if needed if self.mathmlOK or self.svgOK: if [n_v for n_v in attrs if n_v[0].startswith(‘xlink:’)]: if not (‘xmlns:xlink’,’http://www.w3.org/1999/xlink’) in attrs: attrs.append((‘xmlns:xlink’,’http://www.w3.org/1999/xlink’)) clean_attrs = [] for key, value in self.normalize_attrs(attrs): if key in acceptable_attributes: key=keymap.get(key,key) # make sure the uri uses an acceptable uri scheme if key == ‘href’: value = _makeSafeAbsoluteURI(value) clean_attrs.append((key,value)) elif key==’style’: clean_value = self.sanitize_style(value) if clean_value: clean_attrs.append((key,clean_value)) _BaseHTMLProcessor.unknown_starttag(self, tag, clean_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 if self.mathmlOK and tag in self.mathml_elements: if tag == ‘math’ and self.mathmlOK: self.mathmlOK -= 1 elif self.svgOK and tag in self.svg_elements: tag = self.svg_elem_map.get(tag,tag) if tag == ‘svg’ and self.svgOK: self.svgOK -= 1 else: 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 sanitize_style(self, style): # disallow urls style=re.compile(‘url\s*\(\s*[^\s)]+?\s*\)\s*’).sub(‘ ‘,style) # gauntlet if not re.match(“””^([:,;#%.\sa-zA-Z0-9!]|\w-\w|'[\s\w]+’|”[\s\w]+”|\([\d,\s]+\))*$”””, style): return ” # This replaced a regexp that used re.match and was prone to pathological back-tracking. if re.sub(“\s*[-\w]+\s*:\s*[^:;]*;?”, ”, style).strip(): return ” clean = [] for prop,value in re.findall(“([-\w]+)\s*:\s*([^:;]*)”,style): if not value: continue if prop.lower() in self.acceptable_css_properties: clean.append(prop + ‘: ‘ + value + ‘;’) elif prop.split(‘-‘)[0].lower() in [‘background’,’border’,’margin’,’padding’]: for keyword in value.split(): if not keyword in self.acceptable_css_keywords and \ not self.valid_css_values.match(keyword): break else: clean.append(prop + ‘: ‘ + value + ‘;’) elif self.svgOK and prop.lower() in self.acceptable_svg_properties: clean.append(prop + ‘: ‘ + value + ‘;’) return ‘ ‘.join(clean) def parse_comment(self, i, report=1): ret = _BaseHTMLProcessor.parse_comment(self, i, report) if ret >= 0: return ret # if ret == -1, this may be a malicious attempt to circumvent # sanitization, or a page-destroying unclosed comment match = re.compile(r’–[^>]*>’).search(self.rawdata, i+4) if match: return match.end() # unclosed comment; deliberately fail to handle_data() return len(self.rawdata) def _sanitizeHTML(htmlSource, encoding, _type): if not _SGML_AVAILABLE: return htmlSource p = _HTMLSanitizer(encoding, _type) htmlSource = htmlSource.replace(‘<![CDATA[‘, ‘&lt;![CDATA[‘) p.feed(htmlSource) data = p.output() data = data.strip().replace(‘\r\n’, ‘\n’) return data class _FeedURLHandler(urllib.request.HTTPDigestAuthHandler, urllib.request.HTTPRedirectHandler, urllib.request.HTTPDefaultErrorHandler): def http_error_default(self, req, fp, code, msg, headers): # The default implementation just raises HTTPError. # Forget that. fp.status = code return fp def http_error_301(self, req, fp, code, msg, hdrs): result = urllib.request.HTTPRedirectHandler.http_error_301(self, req, fp, code, msg, hdrs) result.status = code result.newurl = result.geturl() return result # The default implementations in urllib2.HTTPRedirectHandler # are identical, so hardcoding a http_error_301 call above # won’t affect anything http_error_300 = http_error_301 http_error_302 = http_error_301 http_error_303 = http_error_301 http_error_307 = http_error_301 def http_error_401(self, req, fp, code, msg, headers): # Check if # – server requires digest auth, AND # – we tried (unsuccessfully) with basic auth, AND # 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 = urllib.parse.urlparse(req.get_full_url())[1] if base64 is None or ‘Authorization’ not in req.headers \ or ‘WWW-Authenticate’ not in headers: return self.http_error_default(req, fp, code, msg, headers) auth = _base64decode(req.headers[‘Authorization’].split(‘ ‘)[1]) user, passw = auth.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 def _open_resource(url_file_stream_or_string, etag, modified, agent, referrer, handlers, request_headers): “””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 can be a tuple of 9 integers (as returned by gmtime() in the standard Python time module) or a date string in any format supported by feedparser. Regardless, it MUST be in GMT (Greenwich Mean Time). It will be reformatted into an RFC 1123-compliant date and 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 request_headers is supplied it is a dictionary of HTTP request headers that will override the values generated by FeedParser. :return: A :class:`StringIO.StringIO` or :class:`io.BytesIO`. “”” if hasattr(url_file_stream_or_string, ‘read’): return url_file_stream_or_string if isinstance(url_file_stream_or_string, str) \ and urllib.parse.urlparse(url_file_stream_or_string)[0] in (‘http’, ‘https’, ‘ftp’, ‘file’, ‘feed’): # Deal with the feed URI scheme if url_file_stream_or_string.startswith(‘feed:http’): url_file_stream_or_string = url_file_stream_or_string[5:] elif url_file_stream_or_string.startswith(‘feed:’): url_file_stream_or_string = ‘http:’ + url_file_stream_or_string[5:] if not agent: agent = USER_AGENT # Test for inline user:password credentials for HTTP basic auth auth = None if base64 and not url_file_stream_or_string.startswith(‘ftp:’): urltype, rest = urllib.parse.splittype(url_file_stream_or_string) realhost, rest = urllib.parse.splithost(rest) if realhost: user_passwd, realhost = urllib.parse.splituser(realhost) if user_passwd: url_file_stream_or_string = ‘%s://%s%s’ % (urltype, realhost, rest) auth = base64.standard_b64encode(user_passwd).strip() # iri support if isinstance(url_file_stream_or_string, str): url_file_stream_or_string = _convert_to_idn(url_file_stream_or_string) # try to open with urllib2 (to use optional headers) request = _build_urllib2_request(url_file_stream_or_string, agent, etag, modified, referrer, auth, request_headers) opener = urllib.request.build_opener(*tuple(handlers + [_FeedURLHandler()])) 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, ‘rb’) except (IOError, UnicodeEncodeError, TypeError): # if url_file_stream_or_string is a unicode object that # cannot be converted to the encoding returned by # sys.getfilesystemencoding(), a UnicodeEncodeError # will be thrown # If url_file_stream_or_string is a string that contains NULL # (such as an XML document encoded in UTF-32), TypeError will # be thrown. pass # treat url_file_stream_or_string as string if isinstance(url_file_stream_or_string, str): return _StringIO(url_file_stream_or_string.encode(‘utf-8’)) return _StringIO(url_file_stream_or_string) def _convert_to_idn(url): “””Convert a URL to IDN notation””” # this function should only be called with a unicode string # strategy: if the host cannot be encoded in ascii, then # it’ll be necessary to encode it in idn form parts = list(urllib.parse.urlsplit(url)) try: parts[1].encode(‘ascii’) except UnicodeEncodeError: # the url needs to be converted to idn notation host = parts[1].rsplit(‘:’, 1) newhost = [] port = ” if len(host) == 2: port = host.pop() for h in host[0].split(‘.’): newhost.append(h.encode(‘idna’).decode(‘utf-8’)) parts[1] = ‘.’.join(newhost) if port: parts[1] += ‘:’ + port return urllib.parse.urlunsplit(parts) else: return url def _build_urllib2_request(url, agent, etag, modified, referrer, auth, request_headers): request = urllib.request.Request(url) request.add_header(‘User-Agent’, agent) if etag: request.add_header(‘If-None-Match’, etag) if isinstance(modified, str): modified = _parse_date(modified) elif isinstance(modified, datetime.datetime): modified = modified.utctimetuple() 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) # use this for whatever — cookies, special headers, etc # [(‘Cookie’,’Something’),(‘x-special-header’,’Another Value’)] for header_name, header_value in list(request_headers.items()): request.add_header(header_name, header_value) request.add_header(‘A-IM’, ‘feed’) # RFC 3229 support return request def _parse_psc_chapter_start(start): FORMAT = r’^((\d{2}):)?(\d{2}):(\d{2})(\.(\d{3}))?$’ m = re.compile(FORMAT).match(start) if m is None: return None _, h, m, s, _, ms = m.groups() h, m, s, ms = (int(h or 0), int(m), int(s), int(ms or 0)) return datetime.timedelta(0, h*60*60 + m*60 + s, ms*1000) _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-0MM?-?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<fracsecond>\d+))?’ + r'(?P<tz>[+-](?P<tzhour>\d{2})(:(?P<tzmin>\d{2}))?|Z)?)?’ for tmpl in _iso8601_tmpl] try: del tmpl except NameError: pass _iso8601_matches = [re.compile(regex).match for regex in _iso8601_re] try: del regex except NameError: pass 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: 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(float(params.get(‘second’, 0))) # weekday is normalized by mktime(), we can ignore it weekday = 0 daylight_savings_flag = -1 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(tuple(tm))) registerDateHandler(_parse_date_iso8601) # 8-bit date handling routines written by ytrewq1. _korean_year = ‘\ub144’ # b3e2 in euc-kr _korean_month = ‘\uc6d4’ # bff9 in euc-kr _korean_day = ‘\uc77c’ # c0cf in euc-kr _korean_am = ‘\uc624\uc804’ # bfc0 c0fc in euc-kr _korean_pm = ‘\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(‘(\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′} 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’} return _parse_date_w3dtf(w3dtfdate) registerDateHandler(_parse_date_nate) # Unicode strings for Greek date strings _greek_months = \ { \ ‘\u0399\u03b1\u03bd’: ‘Jan’, # c9e1ed in iso-8859-7 ‘\u03a6\u03b5\u03b2’: ‘Feb’, # d6e5e2 in iso-8859-7 ‘\u039c\u03ac\u03ce’: ‘Mar’, # ccdcfe in iso-8859-7 ‘\u039c\u03b1\u03ce’: ‘Mar’, # cce1fe in iso-8859-7 ‘\u0391\u03c0\u03c1’: ‘Apr’, # c1f0f1 in iso-8859-7 ‘\u039c\u03ac\u03b9’: ‘May’, # ccdce9 in iso-8859-7 ‘\u039c\u03b1\u03ca’: ‘May’, # cce1fa in iso-8859-7 ‘\u039c\u03b1\u03b9’: ‘May’, # cce1e9 in iso-8859-7 ‘\u0399\u03bf\u03cd\u03bd’: ‘Jun’, # c9effded in iso-8859-7 ‘\u0399\u03bf\u03bd’: ‘Jun’, # c9efed in iso-8859-7 ‘\u0399\u03bf\u03cd\u03bb’: ‘Jul’, # c9effdeb in iso-8859-7 ‘\u0399\u03bf\u03bb’: ‘Jul’, # c9f9eb in iso-8859-7 ‘\u0391\u03cd\u03b3’: ‘Aug’, # c1fde3 in iso-8859-7 ‘\u0391\u03c5\u03b3’: ‘Aug’, # c1f5e3 in iso-8859-7 ‘\u03a3\u03b5\u03c0’: ‘Sep’, # d3e5f0 in iso-8859-7 ‘\u039f\u03ba\u03c4’: ‘Oct’, # cfeaf4 in iso-8859-7 ‘\u039d\u03bf\u03ad’: ‘Nov’, # cdefdd in iso-8859-7 ‘\u039d\u03bf\u03b5’: ‘Nov’, # cdefe5 in iso-8859-7 ‘\u0394\u03b5\u03ba’: ‘Dec’, # c4e5ea in iso-8859-7 } _greek_wdays = \ { \ ‘\u039a\u03c5\u03c1’: ‘Sun’, # caf5f1 in iso-8859-7 ‘\u0394\u03b5\u03c5’: ‘Mon’, # c4e5f5 in iso-8859-7 ‘\u03a4\u03c1\u03b9’: ‘Tue’, # d4f1e9 in iso-8859-7 ‘\u03a4\u03b5\u03c4’: ‘Wed’, # d4e5f4 in iso-8859-7 ‘\u03a0\u03b5\u03bc’: ‘Thu’, # d0e5ec in iso-8859-7 ‘\u03a0\u03b1\u03c1’: ‘Fri’, # d0e1f1 in iso-8859-7 ‘\u03a3\u03b1\u03b2’: ‘Sat’, # d3e1e2 in iso-8859-7 } _greek_date_format_re = \ re.compile(‘([^,]+),\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 wday = _greek_wdays[m.group(1)] month = _greek_months[m.group(3)] 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)} return _parse_date_rfc822(rfc822date) registerDateHandler(_parse_date_greek) # Unicode strings for Hungarian date strings _hungarian_months = \ { \ ‘janu\u00e1r’: ’01’, # e1 in iso-8859-2 ‘febru\u00e1ri’: ’02’, # e1 in iso-8859-2 ‘m\u00e1rcius’: ’03’, # e1 in iso-8859-2 ‘\u00e1prilis’: ’04’, # e1 in iso-8859-2 ‘m\u00e1ujus’: ’05’, # e1 in iso-8859-2 ‘j\u00fanius’: ’06’, # fa in iso-8859-2 ‘j\u00falius’: ’07’, # fa in iso-8859-2 ‘augusztus’: ’08’, ‘szeptember’: ’09’, ‘okt\u00f3ber’: ’10’, # f3 in iso-8859-2 ‘november’: ’11’, ‘december’: ’12’, } _hungarian_date_format_re = \ re.compile(‘(\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 or m.group(2) not in _hungarian_months: return None 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 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)} return _parse_date_w3dtf(w3dtfdate) registerDateHandler(_parse_date_hungarian) timezonenames = { ‘ut’: 0, ‘gmt’: 0, ‘z’: 0, ‘adt’: -3, ‘ast’: -4, ‘at’: -4, ‘edt’: -4, ‘est’: -5, ‘et’: -5, ‘cdt’: -5, ‘cst’: -6, ‘ct’: -6, ‘mdt’: -6, ‘mst’: -7, ‘mt’: -7, ‘pdt’: -7, ‘pst’: -8, ‘pt’: -8, ‘a’: -1, ‘n’: 1, ‘m’: -12, ‘y’: 12, } # W3 date and time format parser # http://www.w3.org/TR/NOTE-datetime # Also supports MSSQL-style datetimes as defined at: # http://msdn.microsoft.com/en-us/library/ms186724.aspx # (basically, allow a space as a date/time/timezone separator) def _parse_date_w3dtf(datestr): if not datestr.strip(): return None parts = datestr.lower().split(‘t’) if len(parts) == 1: # This may be a date only, or may be an MSSQL-style date parts = parts[0].split() if len(parts) == 1: # Treat this as a date only parts.append(’00:00:00z’) elif len(parts) > 2: return None date = parts[0].split(‘-‘, 2) if not date or len(date[0]) != 4: return None # Ensure that `date` has 3 elements. Using ‘1’ sets the default # month to January and the default day to the 1st of the month. date.extend([‘1’] * (3 – len(date))) try: year, month, day = [int(i) for i in date] except ValueError: # `date` may have more than 3 elements or may contain # non-integer strings. return None if parts[1].endswith(‘z’): parts[1] = parts[1][:-1] parts.append(‘z’) # Append the numeric timezone offset, if any, to parts. # If this is an MSSQL-style date then parts[2] already contains # the timezone information, so `append()` will not affect it. # Add 1 to each value so that if `find()` returns -1 it will be # treated as False. loc = parts[1].find(‘-‘) + 1 or parts[1].find(‘+’) + 1 or len(parts[1]) + 1 loc = loc – 1 parts.append(parts[1][loc:]) parts[1] = parts[1][:loc] time = parts[1].split(‘:’, 2) # Ensure that time has 3 elements. Using ‘0’ means that the # minutes and seconds, if missing, will default to 0. time.extend([‘0’] * (3 – len(time))) tzhour = 0 tzmin = 0 if parts[2][:1] in (‘-‘, ‘+’): try: tzhour = int(parts[2][1:3]) tzmin = int(parts[2][4:]) except ValueError: return None if parts[2].startswith(‘-‘): tzhour = tzhour * -1 tzmin = tzmin * -1 else: tzhour = timezonenames.get(parts[2], 0) try: hour, minute, second = [int(float(i)) for i in time] except ValueError: return None # Create the datetime object and timezone delta objects try: stamp = datetime.datetime(year, month, day, hour, minute, second) except ValueError: return None delta = datetime.timedelta(0, 0, 0, 0, tzmin, tzhour) # Return the date and timestamp in a UTC 9-tuple try: return (stamp – delta).utctimetuple() except (OverflowError, ValueError): # IronPython throws ValueErrors instead of OverflowErrors return None registerDateHandler(_parse_date_w3dtf) def _parse_date_rfc822(date): “””Parse RFC 822 dates and times http://tools.ietf.org/html/rfc822#section-5 There are some formatting differences that are accounted for: 1. Years may be two or four digits. 2. The month and day can be swapped. 3. Additional timezone names are supported. 4. A default time and timezone are assumed if only a date is present. “”” daynames = set([‘mon’, ‘tue’, ‘wed’, ‘thu’, ‘fri’, ‘sat’, ‘sun’]) months = { ‘jan’: 1, ‘feb’: 2, ‘mar’: 3, ‘apr’: 4, ‘may’: 5, ‘jun’: 6, ‘jul’: 7, ‘aug’: 8, ‘sep’: 9, ‘oct’: 10, ‘nov’: 11, ‘dec’: 12, } parts = date.lower().split() if len(parts) < 5: # Assume that the time and timezone are missing parts.extend((’00:00:00′, ‘0000’)) # Remove the day name if parts[0][:3] in daynames: parts = parts[1:] if len(parts) < 5: # If there are still fewer than five parts, there’s not enough # information to interpret this return None try: day = int(parts[0]) except ValueError: # Check if the day and month are swapped if months.get(parts[0][:3]): try: day = int(parts[1]) except ValueError: return None else: parts[1] = parts[0] else: return None month = months.get(parts[1][:3]) if not month: return None try: year = int(parts[2]) except ValueError: return None # Normalize two-digit years: # Anything in the 90’s is interpreted as 1990 and on # Anything 89 or less is interpreted as 2089 or before if len(parts[2]) <= 2: year += (1900, 2000)[year < 90] timeparts = parts[3].split(‘:’) timeparts = timeparts + ([0] * (3 – len(timeparts))) try: (hour, minute, second) = list(map(int, timeparts)) except ValueError: return None tzhour = 0 tzmin = 0 # Strip ‘Etc/’ from the timezone if parts[4].startswith(‘etc/’): parts[4] = parts[4][4:] # Normalize timezones that start with ‘gmt’: # GMT-05:00 => -0500 # GMT => GMT if parts[4].startswith(‘gmt’): parts[4] = ”.join(parts[4][3:].split(‘:’)) or ‘gmt’ # Handle timezones like ‘-0500’, ‘+0500’, and ‘EST’ if parts[4] and parts[4][0] in (‘-‘, ‘+’): try: tzhour = int(parts[4][1:3]) tzmin = int(parts[4][3:]) except ValueError: return None if parts[4].startswith(‘-‘): tzhour = tzhour * -1 tzmin = tzmin * -1 else: tzhour = timezonenames.get(parts[4], 0) # Create the datetime object and timezone delta objects try: stamp = datetime.datetime(year, month, day, hour, minute, second) except ValueError: return None delta = datetime.timedelta(0, 0, 0, 0, tzmin, tzhour) # Return the date and timestamp in a UTC 9-tuple try: return (stamp – delta).utctimetuple() except (OverflowError, ValueError): # IronPython throws ValueErrors instead of OverflowErrors return None registerDateHandler(_parse_date_rfc822) _months = [‘jan’, ‘feb’, ‘mar’, ‘apr’, ‘may’, ‘jun’, ‘jul’, ‘aug’, ‘sep’, ‘oct’, ‘nov’, ‘dec’] def _parse_date_asctime(dt): “””Parse asctime-style dates. Converts asctime to RFC822-compatible dates and uses the RFC822 parser to do the actual parsing. Supported formats (format is standardized to the first one listed): * {weekday name} {month name} dd hh:mm:ss {+-tz} yyyy * {weekday name} {month name} dd hh:mm:ss yyyy “”” parts = dt.split() # Insert a GMT timezone, if needed. if len(parts) == 5: parts.insert(4, ‘+0000’) # Exit if there are not six parts. if len(parts) != 6: return None # Reassemble the parts in an RFC822-compatible order and parse them. return _parse_date_rfc822(‘ ‘.join([ parts[0], parts[2], parts[1], parts[5], parts[3], parts[4], ])) registerDateHandler(_parse_date_asctime) def _parse_date_perforce(aDateString): “””parse a date in yyyy/mm/dd hh:mm:ss TTT format””” # Fri, 2006/09/15 08:19:53 EDT _my_date_pattern = re.compile( \ r'(\w{,3}), (\d{,4})/(\d{,2})/(\d{2}) (\d{,2}):(\d{2}):(\d{2}) (\w{,3})’) m = _my_date_pattern.search(aDateString) if m is None: return None dow, year, month, day, hour, minute, second, tz = m.groups() months = [‘Jan’, ‘Feb’, ‘Mar’, ‘Apr’, ‘May’, ‘Jun’, ‘Jul’, ‘Aug’, ‘Sep’, ‘Oct’, ‘Nov’, ‘Dec’] dateString = “%s, %s %s %s %s:%s:%s %s” % (dow, day, months[int(month) – 1], year, hour, minute, second, tz) tm = rfc822.parsedate_tz(dateString) if tm: return time.gmtime(rfc822.mktime_tz(tm)) registerDateHandler(_parse_date_perforce) def _parse_date(dateString): ”’Parses a variety of date formats into a 9-tuple in GMT”’ if not dateString: return None for handler in _date_handlers: try: date9tuple = handler(dateString) except (KeyError, OverflowError, ValueError): continue if not date9tuple: continue if len(date9tuple) != 9: continue return date9tuple return None # Each marker represents some of the characters of the opening XML # processing instruction (‘<?xm’) in the specified encoding. EBCDIC_MARKER = _l2bytes([0x4C, 0x6F, 0xA7, 0x94]) UTF16BE_MARKER = _l2bytes([0x00, 0x3C, 0x00, 0x3F]) UTF16LE_MARKER = _l2bytes([0x3C, 0x00, 0x3F, 0x00]) UTF32BE_MARKER = _l2bytes([0x00, 0x00, 0x00, 0x3C]) UTF32LE_MARKER = _l2bytes([0x3C, 0x00, 0x00, 0x00]) ZERO_BYTES = _l2bytes([0x00, 0x00]) # Match the opening XML declaration. # Example: <?xml version=”1.0″ encoding=”utf-8″?> RE_XML_DECLARATION = re.compile(‘^<\?xml[^>]*?>’) # Capture the value of the XML processing instruction’s encoding attribute. # Example: <?xml version=”1.0″ encoding=”utf-8″?> RE_XML_PI_ENCODING = re.compile(_s2bytes(‘^<\?.*encoding=[\'”](.*?)[\'”].*\?>’)) def convert_to_utf8(http_headers, data): ”’Detect and convert the character encoding to UTF-8. http_headers is a dictionary data is a raw string (not Unicode)”’ # This is so much trickier than it sounds, it’s not even funny. # According to RFC 3023 (‘XML Media Types’), if the HTTP Content-Type # is application/xml, application/*+xml, # application/xml-external-parsed-entity, or application/xml-dtd, # the encoding given in the charset parameter of the HTTP Content-Type # takes precedence over the encoding given in the XML prefix within the # document, and defaults to ‘utf-8’ if neither are specified. But, if # the HTTP Content-Type is text/xml, text/*+xml, or # text/xml-external-parsed-entity, the encoding given in the XML prefix # within the document is ALWAYS IGNORED and only the encoding given in # the charset parameter of the HTTP Content-Type header should be # respected, and it defaults to ‘us-ascii’ if not specified. # Furthermore, discussion on the atom-syntax mailing list with the # author of RFC 3023 leads me to the conclusion that any document # served with a Content-Type of text/* and no charset parameter # must be treated as us-ascii. (We now do this.) And also that it # must always be flagged as non-well-formed. (We now do this too.) # If Content-Type is unspecified (input was local file or non-HTTP source) # or unrecognized (server just got it totally wrong), then go by the # encoding given in the XML prefix of the document and default to # ‘iso-8859-1’ as per the HTTP specification (RFC 2616). # Then, assuming we didn’t find a character encoding in the HTTP headers # (and the HTTP Content-type allowed us to look in the body), we need # to sniff the first few bytes of the XML data and try to determine # whether the encoding is ASCII-compatible. Section F of the XML # specification shows the way here: # http://www.w3.org/TR/REC-xml/#sec-guessing-no-ext-info # If the sniffed encoding is not ASCII-compatible, we need to make it # ASCII compatible so that we can sniff further into the XML declaration # to find the encoding attribute, which will tell us the true encoding. # Of course, none of this guarantees that we will be able to parse the # feed in the declared character encoding (assuming it was declared # correctly, which many are not). iconv_codec can help a lot; # you should definitely install it if you can. # http://cjkpython.i18n.org/ bom_encoding = ” xml_encoding = ” rfc3023_encoding = ” # Look at the first few bytes of the document to guess what # its encoding may be. We only need to decode enough of the # document that we can use an ASCII-compatible regular # expression to search for an XML encoding declaration. # The heuristic follows the XML specification, section F: # http://www.w3.org/TR/REC-xml/#sec-guessing-no-ext-info # Check for BOMs first. if data[:4] == codecs.BOM_UTF32_BE: bom_encoding = ‘utf-32be’ data = data[4:] elif data[:4] == codecs.BOM_UTF32_LE: bom_encoding = ‘utf-32le’ data = data[4:] elif data[:2] == codecs.BOM_UTF16_BE and data[2:4] != ZERO_BYTES: bom_encoding = ‘utf-16be’ data = data[2:] elif data[:2] == codecs.BOM_UTF16_LE and data[2:4] != ZERO_BYTES: bom_encoding = ‘utf-16le’ data = data[2:] elif data[:3] == codecs.BOM_UTF8: bom_encoding = ‘utf-8’ data = data[3:] # Check for the characters ‘<?xm’ in several encodings. elif data[:4] == EBCDIC_MARKER: bom_encoding = ‘cp037’ elif data[:4] == UTF16BE_MARKER: bom_encoding = ‘utf-16be’ elif data[:4] == UTF16LE_MARKER: bom_encoding = ‘utf-16le’ elif data[:4] == UTF32BE_MARKER: bom_encoding = ‘utf-32be’ elif data[:4] == UTF32LE_MARKER: bom_encoding = ‘utf-32le’ tempdata = data try: if bom_encoding: tempdata = data.decode(bom_encoding).encode(‘utf-8’) except (UnicodeDecodeError, LookupError): # feedparser recognizes UTF-32 encodings that aren’t # available in Python 2.4 and 2.5, so it’s possible to # encounter a LookupError during decoding. xml_encoding_match = None else: xml_encoding_match = RE_XML_PI_ENCODING.match(tempdata) if xml_encoding_match: xml_encoding = xml_encoding_match.groups()[0].decode(‘utf-8’).lower() # Normalize the xml_encoding if necessary. if bom_encoding and (xml_encoding in ( ‘u16’, ‘utf-16’, ‘utf16’, ‘utf_16’, ‘u32’, ‘utf-32’, ‘utf32’, ‘utf_32’, ‘iso-10646-ucs-2’, ‘iso-10646-ucs-4’, ‘csucs4’, ‘csunicode’, ‘ucs-2’, ‘ucs-4’ )): xml_encoding = bom_encoding # Find the HTTP Content-Type and, hopefully, a character # encoding provided by the server. The Content-Type is used # to choose the “correct” encoding among the BOM encoding, # XML declaration encoding, and HTTP encoding, following the # heuristic defined in RFC 3023. http_content_type = http_headers.get(‘content-type’) or ” http_content_type, params = cgi.parse_header(http_content_type) http_encoding = params.get(‘charset’, ”).replace(“‘”, “”) if not isinstance(http_encoding, str): http_encoding = http_encoding.decode(‘utf-8’, ‘ignore’) acceptable_content_type = 0 application_content_types = (‘application/xml’, ‘application/xml-dtd’, ‘application/xml-external-parsed-entity’) text_content_types = (‘text/xml’, ‘text/xml-external-parsed-entity’) if (http_content_type in application_content_types) or \ (http_content_type.startswith(‘application/’) and http_content_type.endswith(‘+xml’)): acceptable_content_type = 1 rfc3023_encoding = http_encoding or xml_encoding or ‘utf-8’ elif (http_content_type in text_content_types) or \ (http_content_type.startswith(‘text/’) and http_content_type.endswith(‘+xml’)): acceptable_content_type = 1 rfc3023_encoding = http_encoding or ‘us-ascii’ elif http_content_type.startswith(‘text/’): rfc3023_encoding = http_encoding or ‘us-ascii’ elif http_headers and ‘content-type’ not in http_headers: rfc3023_encoding = xml_encoding or ‘iso-8859-1’ else: rfc3023_encoding = xml_encoding or ‘utf-8’ # gb18030 is a superset of gb2312, so always replace gb2312 # with gb18030 for greater compatibility. if rfc3023_encoding.lower() == ‘gb2312’: rfc3023_encoding = ‘gb18030’ if xml_encoding.lower() == ‘gb2312’: xml_encoding = ‘gb18030’ # there are four encodings to keep track of: # – http_encoding is the encoding declared in the Content-Type HTTP header # – xml_encoding is the encoding declared in the <?xml declaration # – bom_encoding is the encoding sniffed from the first 4 bytes of the XML data # – rfc3023_encoding is the actual encoding, as per RFC 3023 and a variety of other conflicting specifications error = None if http_headers and (not acceptable_content_type): if ‘content-type’ in http_headers: msg = ‘%s is not an XML media type’ % http_headers[‘content-type’] else: msg = ‘no Content-type specified’ error = NonXMLContentType(msg) # determine character encoding known_encoding = 0 lazy_chardet_encoding = None tried_encodings = [] if chardet: def lazy_chardet_encoding(): chardet_encoding = chardet.detect(data)[‘encoding’] if not chardet_encoding: chardet_encoding = ” if not isinstance(chardet_encoding, str): chardet_encoding = str(chardet_encoding, ‘ascii’, ‘ignore’) return chardet_encoding # try: HTTP encoding, declared XML encoding, encoding sniffed from BOM for proposed_encoding in (rfc3023_encoding, xml_encoding, bom_encoding, lazy_chardet_encoding, ‘utf-8’, ‘windows-1252’, ‘iso-8859-2′): if isinstance(proposed_encoding, collections.Callable): proposed_encoding = proposed_encoding() if not proposed_encoding: continue if proposed_encoding in tried_encodings: continue tried_encodings.append(proposed_encoding) try: data = data.decode(proposed_encoding) except (UnicodeDecodeError, LookupError): pass else: known_encoding = 1 # Update the encoding in the opening XML processing instruction. new_declaration = ”'<?xml version=’1.0′ encoding=’utf-8′?>”’ if RE_XML_DECLARATION.search(data): data = RE_XML_DECLARATION.sub(new_declaration, data) else: data = new_declaration + ‘\n’ + data data = data.encode(‘utf-8’) break # if still no luck, give up if not known_encoding: error = CharacterEncodingUnknown( ‘document encoding unknown, I tried ‘ + ‘%s, %s, utf-8, windows-1252, and iso-8859-2 but nothing worked’ % (rfc3023_encoding, xml_encoding)) rfc3023_encoding = ” elif proposed_encoding != rfc3023_encoding: error = CharacterEncodingOverride( ‘document declared as %s, but parsed as %s’ % (rfc3023_encoding, proposed_encoding)) rfc3023_encoding = proposed_encoding return data, rfc3023_encoding, error # Match XML entity declarations. # Example: <!ENTITY copyright “(C)”> RE_ENTITY_PATTERN = re.compile(_s2bytes(r’^\s*<!ENTITY([^>]*?)>’), re.MULTILINE) # Match XML DOCTYPE declarations. # Example: <!DOCTYPE feed [ ]> RE_DOCTYPE_PATTERN = re.compile(_s2bytes(r’^\s*<!DOCTYPE([^>]*?)>’), re.MULTILINE) # Match safe entity declarations. # This will allow hexadecimal character references through, # as well as text, but not arbitrary nested entities. # Example: cubed “³” # Example: copyright “(C)” # Forbidden: explode1 “&explode2;&explode2;” RE_SAFE_ENTITY_PATTERN = re.compile(_s2bytes(‘\s+(\w+)\s+”(&#\w+;|[^&”]*)”‘)) def replace_doctype(data): ”’Strips and replaces the DOCTYPE, returns (rss_version, stripped_data) rss_version may be ‘rss091n’ or None stripped_data is the same XML document with a replaced DOCTYPE ”’ # Divide the document into two groups by finding the location # of the first element that doesn’t begin with ‘<?’ or ‘<!’. start = re.search(_s2bytes(‘<\w’), data) start = start and start.start() or -1 head, data = data[:start+1], data[start+1:] # Save and then remove all of the ENTITY declarations. entity_results = RE_ENTITY_PATTERN.findall(head) head = RE_ENTITY_PATTERN.sub(_s2bytes(”), head) # Find the DOCTYPE declaration and check the feed type. doctype_results = RE_DOCTYPE_PATTERN.findall(head) doctype = doctype_results and doctype_results[0] or _s2bytes(”) if _s2bytes(‘netscape’) in doctype.lower(): version = ‘rss091n’ else: version = None # Re-insert the safe ENTITY declarations if a DOCTYPE was found. replacement = _s2bytes(”) if len(doctype_results) == 1 and entity_results: match_safe_entities = lambda e: RE_SAFE_ENTITY_PATTERN.match(e) safe_entities = list(filter(match_safe_entities, entity_results)) if safe_entities: replacement = _s2bytes(‘<!DOCTYPE feed [\n<!ENTITY’) \ + _s2bytes(‘>\n<!ENTITY ‘).join(safe_entities) \ + _s2bytes(‘>\n]>’) data = RE_DOCTYPE_PATTERN.sub(replacement, head) + data # Precompute the safe entities for the loose parser. safe_entities = dict((k.decode(‘utf-8’), v.decode(‘utf-8’)) for k, v in RE_SAFE_ENTITY_PATTERN.findall(replacement)) return version, data, safe_entities # GeoRSS geometry parsers. Each return a dict with ‘type’ and ‘coordinates’ # items, or None in the case of a parsing error. def _parse_poslist(value, geom_type, swap=True, dims=2): if geom_type == ‘linestring’: return _parse_georss_line(value, swap, dims) elif geom_type == ‘polygon’: ring = _parse_georss_line(value, swap, dims) return {‘type’: ‘Polygon’, ‘coordinates’: (ring[‘coordinates’],)} else: return None def _gen_georss_coords(value, swap=True, dims=2): # A generator of (lon, lat) pairs from a string of encoded GeoRSS # coordinates. Converts to floats and swaps order. latlons = map(float, value.strip().replace(‘,’, ‘ ‘).split()) nxt = latlons.__next__ while True: t = [nxt(), nxt()][::swap and -1 or 1] if dims == 3: t.append(nxt()) yield tuple(t) def _parse_georss_point(value, swap=True, dims=2): # A point contains a single latitude-longitude pair, separated by # whitespace. We’ll also handle comma separators. try: coords = list(_gen_georss_coords(value, swap, dims)) return {‘type’: ‘Point’, ‘coordinates’: coords[0]} except (IndexError, ValueError): return None def _parse_georss_line(value, swap=True, dims=2): # A line contains a space separated list of latitude-longitude pairs in # WGS84 coordinate reference system, with each pair separated by # whitespace. There must be at least two pairs. try: coords = list(_gen_georss_coords(value, swap, dims)) return {‘type’: ‘LineString’, ‘coordinates’: coords} except (IndexError, ValueError): return None def _parse_georss_polygon(value, swap=True, dims=2): # A polygon contains a space separated list of latitude-longitude pairs, # with each pair separated by whitespace. There must be at least four # pairs, with the last being identical to the first (so a polygon has a # minimum of three actual points). try: ring = list(_gen_georss_coords(value, swap, dims)) except (IndexError, ValueError): return None if len(ring) < 4: return None return {‘type’: ‘Polygon’, ‘coordinates’: (ring,)} def _parse_georss_box(value, swap=True, dims=2): # A bounding box is a rectangular region, often used to define the extents # of a map or a rough area of interest. A box contains two space seperate # latitude-longitude pairs, with each pair separated by whitespace. The # first pair is the lower corner, the second is the upper corner. try: coords = list(_gen_georss_coords(value, swap, dims)) return {‘type’: ‘Box’, ‘coordinates’: tuple(coords)} except (IndexError, ValueError): return None # end geospatial parsers def parse(url_file_stream_or_string, etag=None, modified=None, agent=None, referrer=None, handlers=None, request_headers=None, response_headers=None): ”’Parse a feed from a URL, file, stream, or string. request_headers, if given, is a dict from http header name to value to add to the request; this overrides internally generated values. :return: A :class:`FeedParserDict`. ”’ if handlers is None: handlers = [] if request_headers is None: request_headers = {} if response_headers is None: response_headers = {} result = FeedParserDict() result[‘feed’] = FeedParserDict() result[‘entries’] = [] result[‘bozo’] = 0 if not isinstance(handlers, list): handlers = [handlers] try: f = _open_resource(url_file_stream_or_string, etag, modified, agent, referrer, handlers, request_headers) data = f.read() except Exception as e: result[‘bozo’] = 1 result[‘bozo_exception’] = e data = None f = None if hasattr(f, ‘headers’): result[‘headers’] = dict(f.headers) # overwrite existing headers using response_headers if ‘headers’ in result: result[‘headers’].update(response_headers) elif response_headers: result[‘headers’] = copy.deepcopy(response_headers) # lowercase all of the HTTP headers for comparisons per RFC 2616 if ‘headers’ in result: http_headers = dict((k.lower(), v) for k, v in list(result[‘headers’].items())) else: http_headers = {} # if feed is gzip-compressed, decompress it if f and data and http_headers: if gzip and ‘gzip’ in http_headers.get(‘content-encoding’, ”): try: data = gzip.GzipFile(fileobj=_StringIO(data)).read() except (IOError, struct.error) as e: # IOError can occur if the gzip header is bad. # struct.error can occur if the data is damaged. result[‘bozo’] = 1 result[‘bozo_exception’] = e if isinstance(e, struct.error): # A gzip header was found but the data is corrupt. # Ideally, we should re-request the feed without the # ‘Accept-encoding: gzip’ header, but we don’t. data = None elif zlib and ‘deflate’ in http_headers.get(‘content-encoding’, ”): try: data = zlib.decompress(data) except zlib.error as e: try: # The data may have no headers and no checksum. data = zlib.decompress(data, -15) except zlib.error as e: result[‘bozo’] = 1 result[‘bozo_exception’] = e # save HTTP headers if http_headers: if ‘etag’ in http_headers: etag = http_headers.get(‘etag’, ”) if not isinstance(etag, str): etag = etag.decode(‘utf-8’, ‘ignore’) if etag: result[‘etag’] = etag if ‘last-modified’ in http_headers: modified = http_headers.get(‘last-modified’, ”) if modified: result[‘modified’] = modified result[‘modified_parsed’] = _parse_date(modified) if hasattr(f, ‘url’): if not isinstance(f.url, str): result[‘href’] = f.url.decode(‘utf-8’, ‘ignore’) else: result[‘href’] = f.url result[‘status’] = 200 if hasattr(f, ‘status’): result[‘status’] = f.status if hasattr(f, ‘close’): f.close() if data is None: return result # Stop processing if the server sent HTTP 304 Not Modified. if getattr(f, ‘code’, 0) == 304: result[‘version’] = ” result[‘debug_message’] = ‘The feed has not changed since you last checked, ‘ + \ ‘so the server sent no data. This is a feature, not a bug!’ return result data, result[‘encoding’], error = convert_to_utf8(http_headers, data) use_strict_parser = result[‘encoding’] and True or False if error is not None: result[‘bozo’] = 1 result[‘bozo_exception’] = error result[‘version’], data, entities = replace_doctype(data) # Ensure that baseuri is an absolute URI using an acceptable URI scheme. contentloc = http_headers.get(‘content-location’, ”) href = result.get(‘href’, ”) baseuri = _makeSafeAbsoluteURI(href, contentloc) or _makeSafeAbsoluteURI(contentloc) or href baselang = http_headers.get(‘content-language’, None) if not isinstance(baselang, str) and baselang is not None: baselang = baselang.decode(‘utf-8’, ‘ignore’) if not _XML_AVAILABLE: use_strict_parser = 0 if use_strict_parser: # initialize the SAX parser feedparser = _StrictFeedParser(baseuri, baselang, ‘utf-8’) saxparser = xml.sax.make_parser(PREFERRED_XML_PARSERS) saxparser.setFeature(xml.sax.handler.feature_namespaces, 1) try: # disable downloading external doctype references, if possible saxparser.setFeature(xml.sax.handler.feature_external_ges, 0) except xml.sax.SAXNotSupportedException: pass saxparser.setContentHandler(feedparser) saxparser.setErrorHandler(feedparser) source = xml.sax.xmlreader.InputSource() source.setByteStream(_StringIO(data)) try: saxparser.parse(source) except xml.sax.SAXException as e: result[‘bozo’] = 1 result[‘bozo_exception’] = feedparser.exc or e use_strict_parser = 0 if not use_strict_parser and _SGML_AVAILABLE: feedparser = _LooseFeedParser(baseuri, baselang, ‘utf-8’, entities) feedparser.feed(data.decode(‘utf-8’, ‘replace’)) result[‘feed’] = feedparser.feeddata result[‘entries’] = feedparser.entries result[‘version’] = result[‘version’] or feedparser.version result[‘namespaces’] = feedparser.namespacesInUse return result # The list of EPSG codes for geographic (latitude/longitude) coordinate # systems to support decoding of GeoRSS GML profiles. _geogCS = [ 3819, 3821, 3824, 3889, 3906, 4001, 4002, 4003, 4004, 4005, 4006, 4007, 4008, 4009, 4010, 4011, 4012, 4013, 4014, 4015, 4016, 4018, 4019, 4020, 4021, 4022, 4023, 4024, 4025, 4027, 4028, 4029, 4030, 4031, 4032, 4033, 4034, 4035, 4036, 4041, 4042, 4043, 4044, 4045, 4046, 4047, 4052, 4053, 4054, 4055, 4075, 4081, 4120, 4121, 4122, 4123, 4124, 4125, 4126, 4127, 4128, 4129, 4130, 4131, 4132, 4133, 4134, 4135, 4136, 4137, 4138, 4139, 4140, 4141, 4142, 4143, 4144, 4145, 4146, 4147, 4148, 4149, 4150, 4151, 4152, 4153, 4154, 4155, 4156, 4157, 4158, 4159, 4160, 4161, 4162, 4163, 4164, 4165, 4166, 4167, 4168, 4169, 4170, 4171, 4172, 4173, 4174, 4175, 4176, 4178, 4179, 4180, 4181, 4182, 4183, 4184, 4185, 4188, 4189, 4190, 4191, 4192, 4193, 4194, 4195, 4196, 4197, 4198, 4199, 4200, 4201, 4202, 4203, 4204, 4205, 4206, 4207, 4208, 4209, 4210, 4211, 4212, 4213, 4214, 4215, 4216, 4218, 4219, 4220, 4221, 4222, 4223, 4224, 4225, 4226, 4227, 4228, 4229, 4230, 4231, 4232, 4233, 4234, 4235, 4236, 4237, 4238, 4239, 4240, 4241, 4242, 4243, 4244, 4245, 4246, 4247, 4248, 4249, 4250, 4251, 4252, 4253, 4254, 4255, 4256, 4257, 4258, 4259, 4260, 4261, 4262, 4263, 4264, 4265, 4266, 4267, 4268, 4269, 4270, 4271, 4272, 4273, 4274, 4275, 4276, 4277, 4278, 4279, 4280, 4281, 4282, 4283, 4284, 4285, 4286, 4287, 4288, 4289, 4291, 4292, 4293, 4294, 4295, 4296, 4297, 4298, 4299, 4300, 4301, 4302, 4303, 4304, 4306, 4307, 4308, 4309, 4310, 4311, 4312, 4313, 4314, 4315, 4316, 4317, 4318, 4319, 4322, 4324, 4326, 4463, 4470, 4475, 4483, 4490, 4555, 4558, 4600, 4601, 4602, 4603, 4604, 4605, 4606, 4607, 4608, 4609, 4610, 4611, 4612, 4613, 4614, 4615, 4616, 4617, 4618, 4619, 4620, 4621, 4622, 4623, 4624, 4625, 4626, 4627, 4628, 4629, 4630, 4631, 4632, 4633, 4634, 4635, 4636, 4637, 4638, 4639, 4640, 4641, 4642, 4643, 4644, 4645, 4646, 4657, 4658, 4659, 4660, 4661, 4662, 4663, 4664, 4665, 4666, 4667, 4668, 4669, 4670, 4671, 4672, 4673, 4674, 4675, 4676, 4677, 4678, 4679, 4680, 4681, 4682, 4683, 4684, 4685, 4686, 4687, 4688, 4689, 4690, 4691, 4692, 4693, 4694, 4695, 4696, 4697, 4698, 4699, 4700, 4701, 4702, 4703, 4704, 4705, 4706, 4707, 4708, 4709, 4710, 4711, 4712, 4713, 4714, 4715, 4716, 4717, 4718, 4719, 4720, 4721, 4722, 4723, 4724, 4725, 4726, 4727, 4728, 4729, 4730, 4731, 4732, 4733, 4734, 4735, 4736, 4737, 4738, 4739, 4740, 4741, 4742, 4743, 4744, 4745, 4746, 4747, 4748, 4749, 4750, 4751, 4752, 4753, 4754, 4755, 4756, 4757, 4758, 4759, 4760, 4761, 4762, 4763, 4764, 4765, 4801, 4802, 4803, 4804, 4805, 4806, 4807, 4808, 4809, 4810, 4811, 4813, 4814, 4815, 4816, 4817, 4818, 4819, 4820, 4821, 4823, 4824, 4901, 4902, 4903, 4904, 4979 ]