2591 lines
109 KiB
Python
2591 lines
109 KiB
Python
#!/usr/bin/env python
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"""Universal feed parser
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Handles RSS 0.9x, RSS 1.0, RSS 2.0, CDF, Atom feeds
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Visit http://feedparser.org/ for the latest version
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Visit http://feedparser.org/docs/ for the latest documentation
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Required: Python 2.1 or later
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Recommended: Python 2.3 or later
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Recommended: CJKCodecs and iconv_codec <http://cjkpython.i18n.org/>
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"""
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from types import *
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#__version__ = "pre-3.3-" + "$Revision: 1.51 $"[11:15] + "-cvs"
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__version__ = "3.3.2"
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__license__ = "Python"
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__copyright__ = "Copyright 2002-4, Mark Pilgrim"
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__author__ = "Mark Pilgrim <http://diveintomark.org/>"
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__contributors__ = ["Jason Diamond <http://injektilo.org/>",
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"John Beimler <http://john.beimler.org/>",
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"Fazal Majid <http://www.majid.info/mylos/weblog/>",
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"Aaron Swartz <http://aaronsw.com>"]
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_debug = 0
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# HTTP "User-Agent" header to send to servers when downloading feeds.
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# If you are embedding feedparser in a larger application, you should
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# change this to your application name and URL.
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USER_AGENT = "UniversalFeedParser/%s +http://feedparser.org/" % __version__
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# HTTP "Accept" header to send to servers when downloading feeds. If you don't
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# want to send an Accept header, set this to None.
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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"
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# List of preferred XML parsers, by SAX driver name. These will be tried first,
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# but if they're not installed, Python will keep searching through its own list
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# of pre-installed parsers until it finds one that supports everything we need.
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PREFERRED_XML_PARSERS = ["drv_libxml2"]
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# If you want feedparser to automatically run HTML markup through HTML Tidy, set
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# this to 1. This is off by default because of reports of crashing on some
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# platforms. If it crashes for you, please submit a bug report with your OS
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# platform, Python version, and the URL of the feed you were attempting to parse.
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# Requires mxTidy <http://www.egenix.com/files/python/mxTidy.html>
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TIDY_MARKUP = 0
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# ---------- required modules (should come with any Python distribution) ----------
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import sgmllib, re, sys, copy, urlparse, time, rfc822, types, cgi
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try:
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from cStringIO import StringIO as _StringIO
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except:
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from StringIO import StringIO as _StringIO
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# ---------- optional modules (feedparser will work without these, but with reduced functionality) ----------
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# gzip is included with most Python distributions, but may not be available if you compiled your own
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try:
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import gzip
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except:
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gzip = None
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try:
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import zlib
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except:
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zlib = None
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# timeoutsocket allows feedparser to time out rather than hang forever on ultra-slow servers.
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# Python 2.3 now has this functionality available in the standard socket library, so under
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# 2.3 you don't need to install anything. But you probably should anyway, because the socket
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# module is buggy and timeoutsocket is better.
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try:
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import timeoutsocket # http://www.timo-tasi.org/python/timeoutsocket.py
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timeoutsocket.setDefaultSocketTimeout(20)
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except ImportError:
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import socket
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if hasattr(socket, 'setdefaulttimeout'):
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socket.setdefaulttimeout(20)
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import urllib, urllib2
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_mxtidy = None
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if TIDY_MARKUP:
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try:
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from mx.Tidy import Tidy as _mxtidy
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except:
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pass
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# If a real XML parser is available, feedparser will attempt to use it. feedparser has
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# been tested with the built-in SAX parser, PyXML, and libxml2. On platforms where the
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# Python distribution does not come with an XML parser (such as Mac OS X 10.2 and some
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# versions of FreeBSD), feedparser will quietly fall back on regex-based parsing.
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try:
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import xml.sax
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xml.sax.make_parser(PREFERRED_XML_PARSERS) # test for valid parsers
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from xml.sax.saxutils import escape as _xmlescape
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_XML_AVAILABLE = 1
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except:
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_XML_AVAILABLE = 0
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def _xmlescape(data):
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data = data.replace("&", "&")
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data = data.replace(">", ">")
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data = data.replace("<", "<")
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return data
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# base64 support for Atom feeds that contain embedded binary data
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try:
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import base64, binascii
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except:
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base64 = binascii = None
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# cjkcodecs and iconv_codec provide support for more character encodings.
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# Both are available from http://cjkpython.i18n.org/
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try:
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import cjkcodecs.aliases
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except:
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pass
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try:
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import iconv_codec
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except:
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pass
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# ---------- don't touch these ----------
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class CharacterEncodingOverride(Exception): pass
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class CharacterEncodingUnknown(Exception): pass
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class NonXMLContentType(Exception): pass
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sgmllib.tagfind = re.compile('[a-zA-Z][-_.:a-zA-Z0-9]*')
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sgmllib.special = re.compile('<!')
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sgmllib.charref = re.compile('&#(x?[0-9A-Fa-f]+)[^0-9A-Fa-f]')
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SUPPORTED_VERSIONS = {'': 'unknown',
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'rss090': 'RSS 0.90',
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'rss091n': 'RSS 0.91 (Netscape)',
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'rss091u': 'RSS 0.91 (Userland)',
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'rss092': 'RSS 0.92',
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'rss093': 'RSS 0.93',
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'rss094': 'RSS 0.94',
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'rss20': 'RSS 2.0',
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'rss10': 'RSS 1.0',
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'rss': 'RSS (unknown version)',
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'atom01': 'Atom 0.1',
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'atom02': 'Atom 0.2',
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'atom03': 'Atom 0.3',
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'atom': 'Atom (unknown version)',
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'cdf': 'CDF',
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'hotrss': 'Hot RSS'
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}
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try:
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UserDict = dict
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except NameError:
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# Python 2.1 does not have dict
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from UserDict import UserDict
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def dict(aList):
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rc = {}
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for k, v in aList:
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rc[k] = v
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return rc
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class FeedParserDict(UserDict):
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def __getitem__(self, key):
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keymap = {'channel': 'feed',
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'items': 'entries',
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'guid': 'id',
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'date': 'modified',
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'date_parsed': 'modified_parsed',
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'description': ['tagline', 'summary']}
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realkey = keymap.get(key, key)
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if type(realkey) == types.ListType:
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for k in realkey:
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if UserDict.has_key(self, k):
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return UserDict.__getitem__(self, k)
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return UserDict.__getitem__(self, key)
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return UserDict.__getitem__(self, realkey)
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def has_key(self, key):
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return hasattr(self, key) or UserDict.has_key(self, key)
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def __getattr__(self, key):
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try:
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return self.__dict__[key]
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except KeyError:
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pass
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try:
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return self.__getitem__(key)
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except:
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raise AttributeError, "object has no attribute '%s'" % key
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def __contains__(self, key):
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return self.has_key(key)
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def zopeCompatibilityHack():
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global FeedParserDict
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del FeedParserDict
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def FeedParserDict(aDict=None):
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rc = {}
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if aDict:
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rc.update(aDict)
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return rc
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_ebcdic_to_ascii_map = None
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def _ebcdic_to_ascii(s):
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global _ebcdic_to_ascii_map
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if not _ebcdic_to_ascii_map:
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emap = (
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0,1,2,3,156,9,134,127,151,141,142,11,12,13,14,15,
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16,17,18,19,157,133,8,135,24,25,146,143,28,29,30,31,
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128,129,130,131,132,10,23,27,136,137,138,139,140,5,6,7,
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144,145,22,147,148,149,150,4,152,153,154,155,20,21,158,26,
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32,160,161,162,163,164,165,166,167,168,91,46,60,40,43,33,
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38,169,170,171,172,173,174,175,176,177,93,36,42,41,59,94,
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45,47,178,179,180,181,182,183,184,185,124,44,37,95,62,63,
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186,187,188,189,190,191,192,193,194,96,58,35,64,39,61,34,
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195,97,98,99,100,101,102,103,104,105,196,197,198,199,200,201,
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202,106,107,108,109,110,111,112,113,114,203,204,205,206,207,208,
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209,126,115,116,117,118,119,120,121,122,210,211,212,213,214,215,
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216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,
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123,65,66,67,68,69,70,71,72,73,232,233,234,235,236,237,
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125,74,75,76,77,78,79,80,81,82,238,239,240,241,242,243,
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92,159,83,84,85,86,87,88,89,90,244,245,246,247,248,249,
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48,49,50,51,52,53,54,55,56,57,250,251,252,253,254,255
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)
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import string
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_ebcdic_to_ascii_map = string.maketrans( \
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"".join(map(chr, range(256))), "".join(map(chr, emap)))
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return s.translate(_ebcdic_to_ascii_map)
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class _FeedParserMixin:
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namespaces = {"": "",
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"http://backend.userland.com/rss": "",
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"http://blogs.law.harvard.edu/tech/rss": "",
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"http://purl.org/rss/1.0/": "",
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"http://my.netscape.com/rdf/simple/0.9/": "",
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"http://example.com/newformat#": "",
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"http://example.com/necho": "",
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"http://purl.org/echo/": "",
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"uri/of/echo/namespace#": "",
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"urn:yahoo:yn":"",
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"http://purl.org/pie/": "",
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"http://purl.org/atom/ns#": "",
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"http://purl.org/rss/1.0/modules/rss091#": "",
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"http://www.w3.org/2005/Atom": "",
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"http://webns.net/mvcb/": "admin",
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"http://purl.org/rss/1.0/modules/aggregation/": "ag",
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"http://purl.org/rss/1.0/modules/annotate/": "annotate",
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"http://media.tangent.org/rss/1.0/": "audio",
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"http://backend.userland.com/blogChannelModule": "blogChannel",
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"http://web.resource.org/cc/": "cc",
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"http://backend.userland.com/creativeCommonsRssModule": "creativeCommons",
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"http://purl.org/rss/1.0/modules/company": "co",
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"http://purl.org/rss/1.0/modules/content/": "content",
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"http://my.theinfo.org/changed/1.0/rss/": "cp",
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"http://purl.org/dc/elements/1.1/": "dc",
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"http://purl.org/dc/terms/": "dcterms",
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"http://purl.org/rss/1.0/modules/email/": "email",
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"http://purl.org/rss/1.0/modules/event/": "ev",
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"http://postneo.com/icbm/": "icbm",
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"http://purl.org/rss/1.0/modules/image/": "image",
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"http://xmlns.com/foaf/0.1/": "foaf",
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"http://freshmeat.net/rss/fm/": "fm",
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"http://purl.org/rss/1.0/modules/link/": "l",
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"http://madskills.com/public/xml/rss/module/pingback/": "pingback",
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"http://prismstandard.org/namespaces/1.2/basic/": "prism",
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"http://www.w3.org/1999/02/22-rdf-syntax-ns#": "rdf",
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"http://www.w3.org/2000/01/rdf-schema#": "rdfs",
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"http://purl.org/rss/1.0/modules/reference/": "ref",
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"http://purl.org/rss/1.0/modules/richequiv/": "reqv",
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"http://purl.org/rss/1.0/modules/search/": "search",
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"http://purl.org/rss/1.0/modules/slash/": "slash",
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"http://purl.org/rss/1.0/modules/servicestatus/": "ss",
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"http://hacks.benhammersley.com/rss/streaming/": "str",
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"http://purl.org/rss/1.0/modules/subscription/": "sub",
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"http://purl.org/rss/1.0/modules/syndication/": "sy",
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"http://purl.org/rss/1.0/modules/taxonomy/": "taxo",
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"http://purl.org/rss/1.0/modules/threading/": "thr",
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"http://purl.org/rss/1.0/modules/textinput/": "ti",
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"http://madskills.com/public/xml/rss/module/trackback/":"trackback",
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"http://wellformedweb.org/CommentAPI/": "wfw",
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"http://purl.org/rss/1.0/modules/wiki/": "wiki",
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"http://schemas.xmlsoap.org/soap/envelope/": "soap",
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"http://www.w3.org/1999/xhtml": "xhtml",
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"http://www.w3.org/XML/1998/namespace": "xml",
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"http://www.itunes.com/DTDs/Podcast-1.0.dtd": "itunes",
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"http://www.blinkx.tv/SmartFeedGuide.php#": "blinkx",
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"http://search.yahoo.com/mrss": "media"
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}
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can_be_relative_uri = ['link', 'id', 'wfw_comment', 'wfw_commentrss', 'docs', 'url', 'comments', 'license']
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can_contain_relative_uris = ['content', 'title', 'summary', 'info', 'tagline', 'copyright', 'description']
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can_contain_dangerous_markup = ['content', 'title', 'summary', 'info', 'tagline', 'copyright', 'description']
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html_types = ['text/html', 'application/xhtml+xml']
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def __init__(self, baseuri=None, baselang=None, encoding='utf-8'):
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if _debug: sys.stderr.write("initializing FeedParser\n")
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self.feeddata = FeedParserDict() # feed-level data
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self.encoding = encoding # character encoding
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self.entries = [] # list of entry-level data
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self.version = '' # feed type/version, see SUPPORTED_VERSIONS
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# the following are used internally to track state;
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# some of this is kind of out of control and should
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# probably be refactored into a finite state machine
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self.infeed = 0
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self.inentry = 0
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self.incontent = 0
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self.intextinput = 0
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self.inimage = 0
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self.inauthor = 0
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self.incontributor = 0
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self.contentparams = FeedParserDict()
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self.namespacemap = {}
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self.elementstack = []
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self.basestack = []
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self.langstack = []
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self.baseuri = baseuri or ''
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self.lang = baselang or None
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if baselang:
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self.feeddata['language'] = baselang
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def unknown_starttag(self, tag, attrs):
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if _debug: sys.stderr.write('start %s with %s\n' % (tag, attrs))
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# normalize attrs
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attrs = [(k.lower(), v) for k, v in attrs]
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attrs = [(k, k in ('rel', 'type') and v.lower() or v) for k, v in attrs]
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# track xml:base and xml:lang
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attrsD = dict(attrs)
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baseuri = attrsD.get('xml:base', attrsD.get('base')) or self.baseuri
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self.baseuri = baseuri
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lang = attrsD.get('xml:lang', attrsD.get('lang'))
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if lang == '':
|
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# xml:lang could be explicitly set to '', we need to capture that
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lang = None
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elif lang is None:
|
|
# if no xml:lang is specified, use parent lang
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lang = self.lang
|
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if lang:
|
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if tag in ('feed', 'rss', 'rdf:RDF'):
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self.feeddata['language'] = lang
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self.lang = lang
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self.basestack.append(baseuri)
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self.langstack.append(lang)
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|
|
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# track namespaces
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for prefix, uri in attrs:
|
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if prefix.startswith('xmlns:'):
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self.trackNamespace(prefix[6:], uri)
|
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elif prefix == 'xmlns':
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self.trackNamespace(None, uri)
|
|
|
|
# track inline content
|
|
if self.incontent and self.contentparams.get('mode') == 'escaped':
|
|
# element declared itself as escaped markup, but it isn't really
|
|
self.contentparams['mode'] = 'xml'
|
|
if self.incontent and self.contentparams.get('mode') == 'xml':
|
|
# Note: probably shouldn't simply recreate localname here, but
|
|
# our namespace handling isn't actually 100% correct in cases where
|
|
# the feed redefines the default namespace (which is actually
|
|
# the usual case for inline content, thanks Sam), so here we
|
|
# cheat and just reconstruct the element based on localname
|
|
# because that compensates for the bugs in our namespace handling.
|
|
# This will horribly munge inline content with non-empty qnames,
|
|
# but nobody actually does that, so I'm not fixing it.
|
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tag = tag.split(':')[-1]
|
|
return self.handle_data("<%s%s>" % (tag, "".join([' %s="%s"' % t for t in attrs])), escape=0)
|
|
|
|
# match namespaces
|
|
if tag.find(':') <> -1:
|
|
prefix, suffix = tag.split(':', 1)
|
|
else:
|
|
prefix, suffix = '', tag
|
|
prefix = self.namespacemap.get(prefix, prefix)
|
|
if prefix:
|
|
prefix = prefix + '_'
|
|
|
|
# special hack for better tracking of empty textinput/image elements in illformed feeds
|
|
if (not prefix) and tag not in ('title', 'link', 'description', 'name'):
|
|
self.intextinput = 0
|
|
if (not prefix) and tag not in ('title', 'link', 'description', 'url', 'width', 'height'):
|
|
self.inimage = 0
|
|
|
|
# call special handler (if defined) or default handler
|
|
methodname = '_start_' + prefix + suffix
|
|
try:
|
|
method = getattr(self, methodname)
|
|
return method(attrsD)
|
|
except AttributeError:
|
|
return self.push(prefix + suffix, 1)
|
|
|
|
def unknown_endtag(self, tag):
|
|
if _debug: sys.stderr.write('end %s\n' % tag)
|
|
# match namespaces
|
|
if tag.find(':') <> -1:
|
|
prefix, suffix = tag.split(':', 1)
|
|
else:
|
|
prefix, suffix = '', tag
|
|
prefix = self.namespacemap.get(prefix, prefix)
|
|
if prefix:
|
|
prefix = prefix + '_'
|
|
|
|
# call special handler (if defined) or default handler
|
|
methodname = '_end_' + prefix + suffix
|
|
try:
|
|
method = getattr(self, methodname)
|
|
method()
|
|
except AttributeError:
|
|
self.pop(prefix + suffix)
|
|
|
|
# track inline content
|
|
if self.incontent and self.contentparams.get('mode') == 'escaped':
|
|
# element declared itself as escaped markup, but it isn't really
|
|
self.contentparams['mode'] = 'xml'
|
|
if self.incontent and self.contentparams.get('mode') == 'xml':
|
|
tag = tag.split(':')[-1]
|
|
self.handle_data("</%s>" % tag, escape=0)
|
|
|
|
# track xml:base and xml:lang going out of scope
|
|
if self.basestack:
|
|
self.basestack.pop()
|
|
if self.basestack and self.basestack[-1]:
|
|
self.baseuri = self.basestack[-1]
|
|
if self.langstack:
|
|
self.langstack.pop()
|
|
if self.langstack: # and (self.langstack[-1] is not None):
|
|
self.lang = self.langstack[-1]
|
|
|
|
def handle_charref(self, ref):
|
|
# called for each character reference, e.g. for " ", ref will be "160"
|
|
if not self.elementstack: return
|
|
ref = ref.lower()
|
|
if ref in ('34', '38', '39', '60', '62', 'x22', 'x26', 'x27', 'x3c', 'x3e'):
|
|
text = "&#%s;" % ref
|
|
else:
|
|
if ref[0] == 'x':
|
|
c = int(ref[1:], 16)
|
|
else:
|
|
c = int(ref)
|
|
text = unichr(c).encode('utf-8')
|
|
self.elementstack[-1][2].append(text)
|
|
|
|
def handle_entityref(self, ref):
|
|
# called for each entity reference, e.g. for "©", ref will be "copy"
|
|
if not self.elementstack: return
|
|
if _debug: sys.stderr.write("entering handle_entityref with %s\n" % ref)
|
|
if ref in ('lt', 'gt', 'quot', 'amp', 'apos'):
|
|
text = '&%s;' % ref
|
|
else:
|
|
# entity resolution graciously donated by Aaron Swartz
|
|
def name2cp(k):
|
|
import htmlentitydefs
|
|
if hasattr(htmlentitydefs, "name2codepoint"): # requires Python 2.3
|
|
return htmlentitydefs.name2codepoint[k]
|
|
k = htmlentitydefs.entitydefs[k]
|
|
if k.startswith("&#") and k.endswith(";"):
|
|
return int(k[2:-1]) # not in latin-1
|
|
return ord(k)
|
|
try: name2cp(ref)
|
|
except KeyError: text = "&%s;" % ref
|
|
else: text = unichr(name2cp(ref)).encode('utf-8')
|
|
self.elementstack[-1][2].append(text)
|
|
|
|
def handle_data(self, text, escape=1):
|
|
# called for each block of plain text, i.e. outside of any tag and
|
|
# not containing any character or entity references
|
|
if not self.elementstack: return
|
|
if escape and self.contentparams.get('mode') == 'xml':
|
|
text = _xmlescape(text)
|
|
self.elementstack[-1][2].append(text)
|
|
|
|
def handle_comment(self, text):
|
|
# called for each comment, e.g. <!-- insert message here -->
|
|
pass
|
|
|
|
def handle_pi(self, text):
|
|
# called for each processing instruction, e.g. <?instruction>
|
|
pass
|
|
|
|
def handle_decl(self, text):
|
|
pass
|
|
|
|
def parse_declaration(self, i):
|
|
# override internal declaration handler to handle CDATA blocks
|
|
if _debug: sys.stderr.write("entering parse_declaration\n")
|
|
if self.rawdata[i:i+9] == '<![CDATA[':
|
|
k = self.rawdata.find(']]>', i)
|
|
if k == -1: k = len(self.rawdata)
|
|
self.handle_data(_xmlescape(self.rawdata[i+9:k]), 0)
|
|
return k+3
|
|
else:
|
|
k = self.rawdata.find('>', i)
|
|
return k+1
|
|
|
|
def trackNamespace(self, prefix, uri):
|
|
if (prefix, uri) == (None, 'http://my.netscape.com/rdf/simple/0.9/') and not self.version:
|
|
self.version = 'rss090'
|
|
if uri == 'http://purl.org/rss/1.0/' and not self.version:
|
|
self.version = 'rss10'
|
|
if not prefix: return
|
|
if uri.find('backend.userland.com/rss') <> -1:
|
|
# match any backend.userland.com namespace
|
|
uri = 'http://backend.userland.com/rss'
|
|
if self.namespaces.has_key(uri):
|
|
self.namespacemap[prefix] = self.namespaces[uri]
|
|
|
|
def resolveURI(self, uri):
|
|
return urlparse.urljoin(self.baseuri or '', uri)
|
|
|
|
def decodeEntities(self, element, data):
|
|
return data
|
|
|
|
def push(self, element, expectingText):
|
|
self.elementstack.append([element, expectingText, []])
|
|
|
|
def pop(self, element):
|
|
if not self.elementstack: return
|
|
if self.elementstack[-1][0] != element: return
|
|
|
|
element, expectingText, pieces = self.elementstack.pop()
|
|
output = "".join(pieces)
|
|
output = output.strip()
|
|
if not expectingText: return output
|
|
|
|
# decode base64 content
|
|
if self.contentparams.get('mode') == 'base64' and base64:
|
|
try:
|
|
output = base64.decodestring(output)
|
|
except binascii.Error:
|
|
pass
|
|
except binascii.Incomplete:
|
|
pass
|
|
|
|
# resolve relative URIs
|
|
if (element in self.can_be_relative_uri) and output:
|
|
output = self.resolveURI(output)
|
|
|
|
# decode entities within embedded markup
|
|
output = self.decodeEntities(element, output)
|
|
|
|
# resolve relative URIs within embedded markup
|
|
if self.contentparams.get('type', 'text/html') in self.html_types:
|
|
if element in self.can_contain_relative_uris:
|
|
output = _resolveRelativeURIs(output, self.baseuri, self.encoding)
|
|
|
|
# sanitize embedded markup
|
|
if self.contentparams.get('type', 'text/html') in self.html_types:
|
|
if element in self.can_contain_dangerous_markup:
|
|
output = _sanitizeHTML(output, self.encoding)
|
|
|
|
if self.encoding and (type(output) == types.StringType):
|
|
try:
|
|
output = unicode(output, self.encoding)
|
|
except:
|
|
pass
|
|
|
|
# store output in appropriate place(s)
|
|
if self.inentry:
|
|
if element == 'content':
|
|
self.entries[-1].setdefault(element, [])
|
|
contentparams = copy.deepcopy(self.contentparams)
|
|
contentparams['value'] = output
|
|
self.entries[-1][element].append(contentparams)
|
|
elif element == 'category':
|
|
self.entries[-1][element] = output
|
|
domain = self.entries[-1]['categories'][-1][0]
|
|
self.entries[-1]['categories'][-1] = (domain, output)
|
|
elif element == 'source':
|
|
self.entries[-1]['source']['value'] = output
|
|
elif element == 'link':
|
|
self.entries[-1][element] = output
|
|
if output:
|
|
self.entries[-1]['links'][-1]['href'] = output
|
|
else:
|
|
if element == 'description':
|
|
element = 'summary'
|
|
self.entries[-1][element] = output
|
|
if self.incontent:
|
|
contentparams = copy.deepcopy(self.contentparams)
|
|
contentparams['value'] = output
|
|
self.entries[-1][element + '_detail'] = contentparams
|
|
elif self.infeed and (not self.intextinput) and (not self.inimage):
|
|
if element == 'description':
|
|
element = 'tagline'
|
|
self.feeddata[element] = output
|
|
if element == 'category':
|
|
domain = self.feeddata['categories'][-1][0]
|
|
self.feeddata['categories'][-1] = (domain, output)
|
|
elif element == 'link':
|
|
self.feeddata['links'][-1]['href'] = output
|
|
elif self.incontent:
|
|
contentparams = copy.deepcopy(self.contentparams)
|
|
contentparams['value'] = output
|
|
self.feeddata[element + '_detail'] = contentparams
|
|
return output
|
|
|
|
def _mapToStandardPrefix(self, name):
|
|
colonpos = name.find(':')
|
|
if colonpos <> -1:
|
|
prefix = name[:colonpos]
|
|
suffix = name[colonpos+1:]
|
|
prefix = self.namespacemap.get(prefix, prefix)
|
|
name = prefix + ':' + suffix
|
|
return name
|
|
|
|
def _getAttribute(self, attrsD, name):
|
|
return attrsD.get(self._mapToStandardPrefix(name))
|
|
|
|
def _save(self, key, value):
|
|
if self.inentry:
|
|
self.entries[-1].setdefault(key, value)
|
|
elif self.feeddata:
|
|
self.feeddata.setdefault(key, value)
|
|
|
|
def _start_rss(self, attrsD):
|
|
versionmap = {'0.91': 'rss091u',
|
|
'0.92': 'rss092',
|
|
'0.93': 'rss093',
|
|
'0.94': 'rss094'}
|
|
if not self.version:
|
|
attr_version = attrsD.get('version', '')
|
|
version = versionmap.get(attr_version)
|
|
if version:
|
|
self.version = version
|
|
elif attr_version.startswith('2.'):
|
|
self.version = 'rss20'
|
|
else:
|
|
self.version = 'rss'
|
|
|
|
def _start_dlhottitles(self, attrsD):
|
|
self.version = 'hotrss'
|
|
|
|
def _start_channel(self, attrsD):
|
|
self.infeed = 1
|
|
self._cdf_common(attrsD)
|
|
_start_feedinfo = _start_channel
|
|
|
|
def _cdf_common(self, attrsD):
|
|
if attrsD.has_key('lastmod'):
|
|
self._start_modified({})
|
|
self.elementstack[-1][-1] = attrsD['lastmod']
|
|
self._end_modified()
|
|
if attrsD.has_key('href'):
|
|
self._start_link({})
|
|
self.elementstack[-1][-1] = attrsD['href']
|
|
self._end_link()
|
|
|
|
def _start_feed(self, attrsD):
|
|
self.infeed = 1
|
|
versionmap = {'0.1': 'atom01',
|
|
'0.2': 'atom02',
|
|
'0.3': 'atom03'}
|
|
if not self.version:
|
|
attr_version = attrsD.get('version')
|
|
version = versionmap.get(attr_version)
|
|
if version:
|
|
self.version = version
|
|
else:
|
|
self.version = 'atom'
|
|
|
|
def _end_channel(self):
|
|
self.infeed = 0
|
|
_end_feed = _end_channel
|
|
|
|
def _start_image(self, attrsD):
|
|
self.inimage = 1
|
|
self.push('image', 0)
|
|
context = self._getContext()
|
|
context.setdefault('image', FeedParserDict())
|
|
|
|
def _end_image(self):
|
|
self.pop('image')
|
|
self.inimage = 0
|
|
|
|
def _start_textinput(self, attrsD):
|
|
self.intextinput = 1
|
|
self.push('textinput', 0)
|
|
context = self._getContext()
|
|
context.setdefault('textinput', FeedParserDict())
|
|
_start_textInput = _start_textinput
|
|
|
|
def _end_textinput(self):
|
|
self.pop('textinput')
|
|
self.intextinput = 0
|
|
_end_textInput = _end_textinput
|
|
|
|
def _start_author(self, attrsD):
|
|
self.inauthor = 1
|
|
self.push('author', 1)
|
|
_start_managingeditor = _start_author
|
|
_start_dc_author = _start_author
|
|
_start_dc_creator = _start_author
|
|
|
|
def _end_author(self):
|
|
self.pop('author')
|
|
self.inauthor = 0
|
|
self._sync_author_detail()
|
|
_end_managingeditor = _end_author
|
|
_end_dc_author = _end_author
|
|
_end_dc_creator = _end_author
|
|
|
|
def _start_contributor(self, attrsD):
|
|
self.incontributor = 1
|
|
context = self._getContext()
|
|
context.setdefault('contributors', [])
|
|
context['contributors'].append(FeedParserDict())
|
|
self.push('contributor', 0)
|
|
|
|
def _end_contributor(self):
|
|
self.pop('contributor')
|
|
self.incontributor = 0
|
|
|
|
def _start_name(self, attrsD):
|
|
self.push('name', 0)
|
|
|
|
def _end_name(self):
|
|
value = self.pop('name')
|
|
if self.inauthor:
|
|
self._save_author('name', value)
|
|
elif self.incontributor:
|
|
self._save_contributor('name', value)
|
|
elif self.intextinput:
|
|
context = self._getContext()
|
|
context['textinput']['name'] = value
|
|
|
|
def _start_width(self, attrsD):
|
|
self.push('width', 0)
|
|
|
|
def _end_width(self):
|
|
value = self.pop('width')
|
|
try:
|
|
value = int(value)
|
|
except:
|
|
value = 0
|
|
if self.inimage:
|
|
context = self._getContext()
|
|
context['image']['width'] = value
|
|
|
|
def _start_height(self, attrsD):
|
|
self.push('height', 0)
|
|
|
|
def _end_height(self):
|
|
value = self.pop('height')
|
|
try:
|
|
value = int(value)
|
|
except:
|
|
value = 0
|
|
if self.inimage:
|
|
context = self._getContext()
|
|
context['image']['height'] = value
|
|
|
|
def _start_url(self, attrsD):
|
|
self.push('url', 1)
|
|
_start_homepage = _start_url
|
|
_start_uri = _start_url
|
|
|
|
def _end_url(self):
|
|
value = self.pop('url')
|
|
if self.inauthor:
|
|
self._save_author('url', value)
|
|
elif self.incontributor:
|
|
self._save_contributor('url', value)
|
|
elif self.inimage:
|
|
context = self._getContext()
|
|
context['image']['url'] = value
|
|
elif self.intextinput:
|
|
context = self._getContext()
|
|
context['textinput']['link'] = value
|
|
_end_homepage = _end_url
|
|
_end_uri = _end_url
|
|
|
|
def _start_email(self, attrsD):
|
|
self.push('email', 0)
|
|
|
|
def _end_email(self):
|
|
value = self.pop('email')
|
|
if self.inauthor:
|
|
self._save_author('email', value)
|
|
elif self.incontributor:
|
|
self._save_contributor('email', value)
|
|
pass
|
|
|
|
def _getContext(self):
|
|
if self.inentry:
|
|
context = self.entries[-1]
|
|
else:
|
|
context = self.feeddata
|
|
return context
|
|
|
|
def _save_author(self, key, value):
|
|
context = self._getContext()
|
|
context.setdefault('author_detail', FeedParserDict())
|
|
context['author_detail'][key] = value
|
|
self._sync_author_detail()
|
|
|
|
def _save_contributor(self, key, value):
|
|
context = self._getContext()
|
|
context.setdefault('contributors', [FeedParserDict()])
|
|
context['contributors'][-1][key] = value
|
|
|
|
def _sync_author_detail(self, key='author'):
|
|
context = self._getContext()
|
|
detail = context.get('%s_detail' % key)
|
|
if detail:
|
|
name = detail.get('name')
|
|
email = detail.get('email')
|
|
if name and email:
|
|
context[key] = "%s (%s)" % (name, email)
|
|
elif name:
|
|
context[key] = name
|
|
elif email:
|
|
context[key] = email
|
|
else:
|
|
author = context.get(key)
|
|
if not author: return
|
|
emailmatch = re.search(r"""(([a-zA-Z0-9\_\-\.\+]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?))""", author)
|
|
if not emailmatch: return
|
|
email = emailmatch.group(0)
|
|
# probably a better way to do the following, but it passes all the tests
|
|
author = author.replace(email, '')
|
|
author = author.replace('()', '')
|
|
author = author.strip()
|
|
if author and (author[0] == '('):
|
|
author = author[1:]
|
|
if author and (author[-1] == ')'):
|
|
author = author[:-1]
|
|
author = author.strip()
|
|
context.setdefault('%s_detail' % key, FeedParserDict())
|
|
context['%s_detail' % key]['name'] = author
|
|
context['%s_detail' % key]['email'] = email
|
|
|
|
def _start_tagline(self, attrsD):
|
|
self.incontent += 1
|
|
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'escaped'),
|
|
'type': attrsD.get('type', 'text/plain'),
|
|
'language': self.lang,
|
|
'base': self.baseuri})
|
|
self.push('tagline', 1)
|
|
_start_subtitle = _start_tagline
|
|
|
|
def _end_tagline(self):
|
|
value = self.pop('tagline')
|
|
self.incontent -= 1
|
|
self.contentparams.clear()
|
|
if self.infeed:
|
|
self.feeddata['description'] = value
|
|
_end_subtitle = _end_tagline
|
|
|
|
def _start_copyright(self, attrsD):
|
|
self.incontent += 1
|
|
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'escaped'),
|
|
'type': attrsD.get('type', 'text/plain'),
|
|
'language': self.lang,
|
|
'base': self.baseuri})
|
|
self.push('copyright', 1)
|
|
_start_dc_rights = _start_copyright
|
|
|
|
def _end_copyright(self):
|
|
self.pop('copyright')
|
|
self.incontent -= 1
|
|
self.contentparams.clear()
|
|
_end_dc_rights = _end_copyright
|
|
|
|
def _start_item(self, attrsD):
|
|
self.entries.append(FeedParserDict())
|
|
self.push('item', 0)
|
|
self.inentry = 1
|
|
self.guidislink = 0
|
|
id = self._getAttribute(attrsD, 'rdf:about')
|
|
if id:
|
|
context = self._getContext()
|
|
context['id'] = id
|
|
self._cdf_common(attrsD)
|
|
_start_entry = _start_item
|
|
_start_product = _start_item
|
|
|
|
def _end_item(self):
|
|
self.pop('item')
|
|
self.inentry = 0
|
|
_end_entry = _end_item
|
|
|
|
def _start_dc_language(self, attrsD):
|
|
self.push('language', 1)
|
|
_start_language = _start_dc_language
|
|
|
|
def _end_dc_language(self):
|
|
self.lang = self.pop('language')
|
|
_end_language = _end_dc_language
|
|
|
|
def _start_dc_publisher(self, attrsD):
|
|
self.push('publisher', 1)
|
|
_start_webmaster = _start_dc_publisher
|
|
|
|
def _end_dc_publisher(self):
|
|
self.pop('publisher')
|
|
self._sync_author_detail('publisher')
|
|
_end_webmaster = _end_dc_publisher
|
|
|
|
def _start_dcterms_issued(self, attrsD):
|
|
self.push('issued', 1)
|
|
_start_issued = _start_dcterms_issued
|
|
|
|
def _end_dcterms_issued(self):
|
|
value = self.pop('issued')
|
|
self._save('issued_parsed', _parse_date(value))
|
|
_end_issued = _end_dcterms_issued
|
|
|
|
def _start_dcterms_created(self, attrsD):
|
|
self.push('created', 1)
|
|
_start_created = _start_dcterms_created
|
|
|
|
def _end_dcterms_created(self):
|
|
value = self.pop('created')
|
|
self._save('created_parsed', _parse_date(value))
|
|
_end_created = _end_dcterms_created
|
|
|
|
def _start_dcterms_modified(self, attrsD):
|
|
self.push('modified', 1)
|
|
_start_modified = _start_dcterms_modified
|
|
_start_dc_date = _start_dcterms_modified
|
|
_start_pubdate = _start_dcterms_modified
|
|
|
|
def _end_dcterms_modified(self):
|
|
value = self.pop('modified')
|
|
parsed_value = _parse_date(value)
|
|
self._save('modified_parsed', parsed_value)
|
|
_end_modified = _end_dcterms_modified
|
|
_end_dc_date = _end_dcterms_modified
|
|
_end_pubdate = _end_dcterms_modified
|
|
|
|
def _start_expirationdate(self, attrsD):
|
|
self.push('expired', 1)
|
|
|
|
def _end_expirationdate(self):
|
|
self._save('expired_parsed', _parse_date(self.pop('expired')))
|
|
|
|
def _start_cc_license(self, attrsD):
|
|
self.push('license', 1)
|
|
value = self._getAttribute(attrsD, 'rdf:resource')
|
|
if value:
|
|
self.elementstack[-1][2].append(value)
|
|
self.pop('license')
|
|
|
|
def _start_creativecommons_license(self, attrsD):
|
|
self.push('license', 1)
|
|
|
|
def _end_creativecommons_license(self):
|
|
self.pop('license')
|
|
|
|
def _start_category(self, attrsD):
|
|
self.push('category', 1)
|
|
domain = self._getAttribute(attrsD, 'domain')
|
|
cats = []
|
|
if self.inentry:
|
|
cats = self.entries[-1].setdefault('categories', [])
|
|
elif self.infeed:
|
|
cats = self.feeddata.setdefault('categories', [])
|
|
cats.append((domain, None))
|
|
_start_dc_subject = _start_category
|
|
_start_keywords = _start_category
|
|
|
|
def _end_category(self):
|
|
self.pop('category')
|
|
_end_dc_subject = _end_category
|
|
_end_keywords = _end_category
|
|
|
|
def _start_cloud(self, attrsD):
|
|
self.feeddata['cloud'] = FeedParserDict(attrsD)
|
|
|
|
def _start_link(self, attrsD):
|
|
attrsD.setdefault('rel', 'alternate')
|
|
attrsD.setdefault('type', 'text/html')
|
|
if attrsD.has_key('href'):
|
|
attrsD['href'] = self.resolveURI(attrsD['href'])
|
|
expectingText = self.infeed or self.inentry
|
|
if self.inentry:
|
|
self.entries[-1].setdefault('links', [])
|
|
self.entries[-1]['links'].append(FeedParserDict(attrsD))
|
|
elif self.infeed:
|
|
self.feeddata.setdefault('links', [])
|
|
self.feeddata['links'].append(FeedParserDict(attrsD))
|
|
if attrsD.has_key('href'):
|
|
expectingText = 0
|
|
if attrsD.get('type', '') in self.html_types:
|
|
if self.inentry:
|
|
self.entries[-1]['link'] = attrsD['href']
|
|
elif self.infeed:
|
|
self.feeddata['link'] = attrsD['href']
|
|
else:
|
|
self.push('link', expectingText)
|
|
_start_producturl = _start_link
|
|
|
|
def _end_link(self):
|
|
value = self.pop('link')
|
|
if self.intextinput:
|
|
context = self._getContext()
|
|
context['textinput']['link'] = value
|
|
if self.inimage:
|
|
context = self._getContext()
|
|
context['image']['link'] = value
|
|
_end_producturl = _end_link
|
|
|
|
def _start_guid(self, attrsD):
|
|
self.guidislink = (attrsD.get('ispermalink', 'true') == 'true')
|
|
self.push('id', 1)
|
|
|
|
def _end_guid(self):
|
|
value = self.pop('id')
|
|
self._save('guidislink', self.guidislink and not self._getContext().has_key('link'))
|
|
if self.guidislink:
|
|
# guid acts as link, but only if "ispermalink" is not present or is "true",
|
|
# and only if the item doesn't already have a link element
|
|
self._save('link', value)
|
|
|
|
def _start_id(self, attrsD):
|
|
self.push('id', 1)
|
|
|
|
def _end_id(self):
|
|
value = self.pop('id')
|
|
|
|
def _start_title(self, attrsD):
|
|
self.incontent += 1
|
|
if _debug: sys.stderr.write('attrsD.xml:lang = %s\n' % attrsD.get('xml:lang'))
|
|
if _debug: sys.stderr.write('self.lang = %s\n' % self.lang)
|
|
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'escaped'),
|
|
'type': attrsD.get('type', 'text/plain'),
|
|
'language': self.lang,
|
|
'base': self.baseuri})
|
|
self.push('title', self.infeed or self.inentry)
|
|
_start_dc_title = _start_title
|
|
|
|
def _end_title(self):
|
|
value = self.pop('title')
|
|
self.incontent -= 1
|
|
self.contentparams.clear()
|
|
if self.intextinput:
|
|
context = self._getContext()
|
|
context['textinput']['title'] = value
|
|
elif self.inimage:
|
|
context = self._getContext()
|
|
context['image']['title'] = value
|
|
_end_dc_title = _end_title
|
|
|
|
def _start_description(self, attrsD, default_content_type='text/html'):
|
|
self.incontent += 1
|
|
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'escaped'),
|
|
'type': attrsD.get('type', default_content_type),
|
|
'language': self.lang,
|
|
'base': self.baseuri})
|
|
self.push('description', self.infeed or self.inentry)
|
|
|
|
def _start_abstract(self, attrsD):
|
|
return self._start_description(attrsD, 'text/plain')
|
|
|
|
def _end_description(self):
|
|
value = self.pop('description')
|
|
self.incontent -= 1
|
|
self.contentparams.clear()
|
|
context = self._getContext()
|
|
if self.intextinput:
|
|
context['textinput']['description'] = value
|
|
elif self.inimage:
|
|
context['image']['description'] = value
|
|
# elif self.inentry:
|
|
# context['summary'] = value
|
|
# elif self.infeed:
|
|
# context['tagline'] = value
|
|
_end_abstract = _end_description
|
|
|
|
def _start_info(self, attrsD):
|
|
self.incontent += 1
|
|
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'escaped'),
|
|
'type': attrsD.get('type', 'text/plain'),
|
|
'language': self.lang,
|
|
'base': self.baseuri})
|
|
self.push('info', 1)
|
|
|
|
def _end_info(self):
|
|
self.pop('info')
|
|
self.incontent -= 1
|
|
self.contentparams.clear()
|
|
|
|
def _start_generator(self, attrsD):
|
|
if attrsD:
|
|
if attrsD.has_key('url'):
|
|
attrsD['url'] = self.resolveURI(attrsD['url'])
|
|
self.feeddata['generator_detail'] = FeedParserDict(attrsD)
|
|
self.push('generator', 1)
|
|
|
|
def _end_generator(self):
|
|
value = self.pop('generator')
|
|
if self.feeddata.has_key('generator_detail'):
|
|
self.feeddata['generator_detail']['name'] = value
|
|
|
|
def _start_admin_generatoragent(self, attrsD):
|
|
self.push('generator', 1)
|
|
value = self._getAttribute(attrsD, 'rdf:resource')
|
|
if value:
|
|
self.elementstack[-1][2].append(value)
|
|
self.pop('generator')
|
|
self.feeddata['generator_detail'] = FeedParserDict({"url": 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):
|
|
self.incontent += 1
|
|
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'escaped'),
|
|
'type': attrsD.get('type', 'text/plain'),
|
|
'language': self.lang,
|
|
'base': self.baseuri})
|
|
self.push('summary', 1)
|
|
|
|
def _end_summary(self):
|
|
value = self.pop('summary')
|
|
if self.entries:
|
|
self.entries[-1]['description'] = value
|
|
self.incontent -= 1
|
|
self.contentparams.clear()
|
|
|
|
def _start_enclosure(self, attrsD):
|
|
if self.inentry:
|
|
self.entries[-1].setdefault('enclosures', [])
|
|
self.entries[-1]['enclosures'].append(FeedParserDict(attrsD))
|
|
|
|
def _start_source(self, attrsD):
|
|
if self.inentry:
|
|
self.entries[-1]['source'] = FeedParserDict(attrsD)
|
|
self.push('source', 1)
|
|
|
|
def _end_source(self):
|
|
self.pop('source')
|
|
|
|
def _start_content(self, attrsD):
|
|
self.incontent += 1
|
|
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'xml'),
|
|
'type': attrsD.get('type', 'text/plain'),
|
|
'language': self.lang,
|
|
'base': self.baseuri})
|
|
self.push('content', 1)
|
|
|
|
def _start_prodlink(self, attrsD):
|
|
self.incontent += 1
|
|
self.contentparams = FeedParserDict({'mode': attrsD.get('mode', 'xml'),
|
|
'type': attrsD.get('type', 'text/html'),
|
|
'language': self.lang,
|
|
'base': self.baseuri})
|
|
self.push('content', 1)
|
|
|
|
def _start_body(self, attrsD):
|
|
self.incontent += 1
|
|
self.contentparams = FeedParserDict({'mode': 'xml',
|
|
'type': 'application/xhtml+xml',
|
|
'language': self.lang,
|
|
'base': self.baseuri})
|
|
self.push('content', 1)
|
|
_start_xhtml_body = _start_body
|
|
|
|
def _start_content_encoded(self, attrsD):
|
|
self.incontent += 1
|
|
self.contentparams = FeedParserDict({'mode': 'escaped',
|
|
'type': 'text/html',
|
|
'language': self.lang,
|
|
'base': self.baseuri})
|
|
self.push('content', 1)
|
|
_start_fullitem = _start_content_encoded
|
|
|
|
def _end_content(self):
|
|
value = self.pop('content')
|
|
if self.contentparams.get('type') in (['text/plain'] + self.html_types):
|
|
self._save('description', value)
|
|
self.incontent -= 1
|
|
self.contentparams.clear()
|
|
_end_body = _end_content
|
|
_end_xhtml_body = _end_content
|
|
_end_content_encoded = _end_content
|
|
_end_fullitem = _end_content
|
|
_end_prodlink = _end_content
|
|
|
|
if _XML_AVAILABLE:
|
|
class _StrictFeedParser(_FeedParserMixin, xml.sax.handler.ContentHandler):
|
|
def __init__(self, baseuri, baselang, encoding):
|
|
if _debug: sys.stderr.write('trying StrictFeedParser\n')
|
|
xml.sax.handler.ContentHandler.__init__(self)
|
|
_FeedParserMixin.__init__(self, baseuri, baselang, encoding)
|
|
self.bozo = 0
|
|
self.exc = None
|
|
|
|
def startPrefixMapping(self, prefix, uri):
|
|
self.trackNamespace(prefix, uri)
|
|
|
|
def startElementNS(self, name, qname, attrs):
|
|
namespace, localname = name
|
|
namespace = str(namespace or '')
|
|
if namespace.find('backend.userland.com/rss') <> -1:
|
|
# match any backend.userland.com namespace
|
|
namespace = 'http://backend.userland.com/rss'
|
|
prefix = self.namespaces.get(namespace, 'unknown')
|
|
if prefix:
|
|
localname = prefix + ':' + localname
|
|
localname = str(localname).lower()
|
|
|
|
# qname implementation is horribly broken in Python 2.1 (it
|
|
# doesn't report any), and slightly broken in Python 2.2 (it
|
|
# doesn't report the xml: namespace). So we match up namespaces
|
|
# with a known list first, and then possibly override them with
|
|
# the qnames the SAX parser gives us (if indeed it gives us any
|
|
# at all). Thanks to MatejC for helping me test this and
|
|
# tirelessly telling me that it didn't work yet.
|
|
attrsD = {}
|
|
for (namespace, attrlocalname), attrvalue in attrs._attrs.items():
|
|
prefix = self.namespaces.get(namespace, '')
|
|
if prefix:
|
|
attrlocalname = prefix + ":" + attrlocalname
|
|
attrsD[str(attrlocalname).lower()] = attrvalue
|
|
for qname in attrs.getQNames():
|
|
attrsD[str(qname).lower()] = attrs.getValueByQName(qname)
|
|
self.unknown_starttag(localname, attrsD.items())
|
|
|
|
# def resolveEntity(self, publicId, systemId):
|
|
# return _StringIO()
|
|
|
|
def characters(self, text):
|
|
self.handle_data(text)
|
|
|
|
def endElementNS(self, name, qname):
|
|
namespace, localname = name
|
|
namespace = str(namespace)
|
|
prefix = self.namespaces.get(namespace, '')
|
|
if prefix:
|
|
localname = prefix + ':' + localname
|
|
localname = str(localname).lower()
|
|
self.unknown_endtag(localname)
|
|
|
|
def error(self, exc):
|
|
self.bozo = 1
|
|
self.exc = exc
|
|
|
|
def fatalError(self, exc):
|
|
self.error(exc)
|
|
raise exc
|
|
|
|
class _BaseHTMLProcessor(sgmllib.SGMLParser):
|
|
elements_no_end_tag = ['area', 'base', 'basefont', 'br', 'col', 'frame', 'hr',
|
|
'img', 'input', 'isindex', 'link', 'meta', 'param']
|
|
|
|
def __init__(self, encoding):
|
|
self.encoding = encoding
|
|
if _debug: sys.stderr.write('entering BaseHTMLProcessor, encoding=%s\n' % self.encoding)
|
|
sgmllib.SGMLParser.__init__(self)
|
|
|
|
def reset(self):
|
|
self.pieces = []
|
|
sgmllib.SGMLParser.reset(self)
|
|
|
|
def feed(self, data):
|
|
data = re.compile(r'<!((?!DOCTYPE|--|\[))', re.IGNORECASE).sub(r'<!\1', data)
|
|
data = re.sub(r'<(\S+)/>', r'<\1></\1>', data)
|
|
data = data.replace(''', "'")
|
|
data = data.replace('"', '"')
|
|
if self.encoding and (type(data) == types.UnicodeType):
|
|
data = data.encode(self.encoding)
|
|
sgmllib.SGMLParser.feed(self, data)
|
|
|
|
def normalize_attrs(self, attrs):
|
|
# utility method to be called by descendants
|
|
attrs = [(k.lower(), v) for k, v in attrs]
|
|
# if self.encoding:
|
|
# if _debug: sys.stderr.write('normalize_attrs, encoding=%s\n' % self.encoding)
|
|
# attrs = [(k, v.encode(self.encoding)) for k, v in attrs]
|
|
attrs = [(k, k in ('rel', 'type') and v.lower() or v) for k, v in attrs]
|
|
return attrs
|
|
|
|
def unknown_starttag(self, tag, attrs):
|
|
# called for each start tag
|
|
# attrs is a list of (attr, value) tuples
|
|
# e.g. for <pre class="screen">, tag="pre", attrs=[("class", "screen")]
|
|
attrsList = []
|
|
for attr in attrs:
|
|
attrsList.append(list(attr))
|
|
|
|
for attr in attrsList:
|
|
for key in attr:
|
|
if type(key) is UnicodeType:
|
|
strKey = key.encode('utf-8')
|
|
attr.remove(key)
|
|
attr.append(strKey)
|
|
|
|
if _debug: sys.stderr.write('_BaseHTMLProcessor, unknown_starttag, tag=%s\n' % tag)
|
|
strattrs = "".join([' %s="%s"' % (key, value) for key, value in attrsList])
|
|
if tag in self.elements_no_end_tag:
|
|
self.pieces.append("<%(tag)s%(strattrs)s />" % locals())
|
|
else:
|
|
self.pieces.append("<%(tag)s%(strattrs)s>" % locals())
|
|
|
|
def unknown_endtag(self, tag):
|
|
# called for each end tag, e.g. for </pre>, tag will be "pre"
|
|
# Reconstruct the original end tag.
|
|
if tag not in self.elements_no_end_tag:
|
|
self.pieces.append("</%(tag)s>" % locals())
|
|
|
|
def handle_charref(self, ref):
|
|
# called for each character reference, e.g. for " ", ref will be "160"
|
|
# Reconstruct the original character reference.
|
|
self.pieces.append("&#%(ref)s;" % locals())
|
|
|
|
def handle_entityref(self, ref):
|
|
# called for each entity reference, e.g. for "©", ref will be "copy"
|
|
# Reconstruct the original entity reference.
|
|
self.pieces.append("&%(ref)s;" % locals())
|
|
|
|
def handle_data(self, text):
|
|
# called for each block of plain text, i.e. outside of any tag and
|
|
# not containing any character or entity references
|
|
# Store the original text verbatim.
|
|
if _debug: sys.stderr.write('_BaseHTMLProcessor, handle_text, text=%s\n' % text)
|
|
self.pieces.append(text)
|
|
|
|
def handle_comment(self, text):
|
|
# called for each HTML comment, e.g. <!-- insert Javascript code here -->
|
|
# Reconstruct the original comment.
|
|
self.pieces.append("<!--%(text)s-->" % locals())
|
|
|
|
def handle_pi(self, text):
|
|
# called for each processing instruction, e.g. <?instruction>
|
|
# Reconstruct original processing instruction.
|
|
self.pieces.append("<?%(text)s>" % locals())
|
|
|
|
def handle_decl(self, text):
|
|
# called for the DOCTYPE, if present, e.g.
|
|
# <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
|
|
# "http://www.w3.org/TR/html4/loose.dtd">
|
|
# Reconstruct original DOCTYPE
|
|
self.pieces.append("<!%(text)s>" % locals())
|
|
|
|
_new_declname_match = re.compile(r'[a-zA-Z][-_.a-zA-Z0-9:]*\s*').match
|
|
def _scan_name(self, i, declstartpos):
|
|
rawdata = self.rawdata
|
|
n = len(rawdata)
|
|
if i == n:
|
|
return None, -1
|
|
m = self._new_declname_match(rawdata, i)
|
|
if m:
|
|
s = m.group()
|
|
name = s.strip()
|
|
if (i + len(s)) == n:
|
|
return None, -1 # end of buffer
|
|
return name.lower(), m.end()
|
|
else:
|
|
self.handle_data(rawdata)
|
|
# self.updatepos(declstartpos, i)
|
|
return None, -1
|
|
|
|
def output(self):
|
|
"""Return processed HTML as a single string"""
|
|
return "".join([str(p) for p in self.pieces])
|
|
|
|
class _LooseFeedParser(_FeedParserMixin, _BaseHTMLProcessor):
|
|
def __init__(self, baseuri, baselang, encoding):
|
|
sgmllib.SGMLParser.__init__(self)
|
|
_FeedParserMixin.__init__(self, baseuri, baselang, encoding)
|
|
|
|
def decodeEntities(self, element, data):
|
|
data = data.replace('<', '<')
|
|
data = data.replace('<', '<')
|
|
data = data.replace('>', '>')
|
|
data = data.replace('>', '>')
|
|
data = data.replace('&', '&')
|
|
data = data.replace('&', '&')
|
|
data = data.replace('"', '"')
|
|
data = data.replace('"', '"')
|
|
data = data.replace(''', ''')
|
|
data = data.replace(''', ''')
|
|
if self.contentparams.get('mode') == 'escaped':
|
|
data = data.replace('<', '<')
|
|
data = data.replace('>', '>')
|
|
data = data.replace('&', '&')
|
|
data = data.replace('"', '"')
|
|
data = data.replace(''', "'")
|
|
return data
|
|
|
|
class _RelativeURIResolver(_BaseHTMLProcessor):
|
|
relative_uris = [('a', 'href'),
|
|
('applet', 'codebase'),
|
|
('area', 'href'),
|
|
('blockquote', 'cite'),
|
|
('body', 'background'),
|
|
('del', 'cite'),
|
|
('form', 'action'),
|
|
('frame', 'longdesc'),
|
|
('frame', 'src'),
|
|
('iframe', 'longdesc'),
|
|
('iframe', 'src'),
|
|
('head', 'profile'),
|
|
('img', 'longdesc'),
|
|
('img', 'src'),
|
|
('img', 'usemap'),
|
|
('input', 'src'),
|
|
('input', 'usemap'),
|
|
('ins', 'cite'),
|
|
('link', 'href'),
|
|
('object', 'classid'),
|
|
('object', 'codebase'),
|
|
('object', 'data'),
|
|
('object', 'usemap'),
|
|
('q', 'cite'),
|
|
('script', 'src')]
|
|
|
|
def __init__(self, baseuri, encoding):
|
|
_BaseHTMLProcessor.__init__(self, encoding)
|
|
self.baseuri = baseuri
|
|
|
|
def resolveURI(self, uri):
|
|
return urlparse.urljoin(self.baseuri, uri)
|
|
|
|
def unknown_starttag(self, tag, attrs):
|
|
attrs = self.normalize_attrs(attrs)
|
|
attrs = [(key, ((tag, key) in self.relative_uris) and self.resolveURI(value) or value) for key, value in attrs]
|
|
_BaseHTMLProcessor.unknown_starttag(self, tag, attrs)
|
|
|
|
def _resolveRelativeURIs(htmlSource, baseURI, encoding):
|
|
if _debug: sys.stderr.write("entering _resolveRelativeURIs\n")
|
|
p = _RelativeURIResolver(baseURI, encoding)
|
|
p.feed(htmlSource)
|
|
return p.output()
|
|
|
|
class _HTMLSanitizer(_BaseHTMLProcessor):
|
|
acceptable_elements = ['a', 'abbr', 'acronym', 'address', 'area', 'b', 'big',
|
|
'blockquote', 'br', 'button', 'caption', 'center', 'cite', 'code', 'col',
|
|
'colgroup', 'dd', 'del', 'dfn', 'dir', 'div', 'dl', 'dt', 'em', 'fieldset',
|
|
'font', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'hr', 'i', 'img', 'input',
|
|
'ins', 'kbd', 'label', 'legend', 'li', 'map', 'menu', 'ol', 'optgroup',
|
|
'option', 'p', 'pre', 'q', 's', 'samp', 'select', 'small', 'span', 'strike',
|
|
'strong', 'sub', 'sup', 'table', 'tbody', 'td', 'textarea', 'tfoot', 'th',
|
|
'thead', 'tr', 'tt', 'u', 'ul', 'var']
|
|
|
|
acceptable_attributes = ['abbr', 'accept', 'accept-charset', 'accesskey',
|
|
'action', 'align', 'alt', 'axis', 'border', 'cellpadding', 'cellspacing',
|
|
'char', 'charoff', 'charset', 'checked', 'cite', 'class', 'clear', 'cols',
|
|
'colspan', 'color', 'compact', 'coords', 'datetime', 'dir', 'disabled',
|
|
'enctype', 'for', 'frame', 'headers', 'height', 'href', 'hreflang', 'hspace',
|
|
'id', 'ismap', 'label', 'lang', 'longdesc', 'maxlength', 'media', 'method',
|
|
'multiple', 'name', 'nohref', 'noshade', 'nowrap', 'prompt', 'readonly',
|
|
'rel', 'rev', 'rows', 'rowspan', 'rules', 'scope', 'selected', 'shape', 'size',
|
|
'span', 'src', 'start', 'summary', 'tabindex', 'target', 'title', 'type',
|
|
'usemap', 'valign', 'value', 'vspace', 'width','style']
|
|
|
|
unacceptable_elements_with_end_tag = ['script', 'applet']
|
|
|
|
def reset(self):
|
|
_BaseHTMLProcessor.reset(self)
|
|
self.unacceptablestack = 0
|
|
|
|
def unknown_starttag(self, tag, attrs):
|
|
if not tag in self.acceptable_elements:
|
|
if tag in self.unacceptable_elements_with_end_tag:
|
|
self.unacceptablestack += 1
|
|
return
|
|
attrs = self.normalize_attrs(attrs)
|
|
attrs = [(key, value) for key, value in attrs if key in self.acceptable_attributes]
|
|
_BaseHTMLProcessor.unknown_starttag(self, tag, attrs)
|
|
|
|
def unknown_endtag(self, tag):
|
|
if not tag in self.acceptable_elements:
|
|
if tag in self.unacceptable_elements_with_end_tag:
|
|
self.unacceptablestack -= 1
|
|
return
|
|
_BaseHTMLProcessor.unknown_endtag(self, tag)
|
|
|
|
def handle_pi(self, text):
|
|
pass
|
|
|
|
def handle_decl(self, text):
|
|
pass
|
|
|
|
def handle_data(self, text):
|
|
if not self.unacceptablestack:
|
|
_BaseHTMLProcessor.handle_data(self, text)
|
|
|
|
def _sanitizeHTML(htmlSource, encoding):
|
|
p = _HTMLSanitizer(encoding)
|
|
p.feed(htmlSource)
|
|
data = p.output()
|
|
if _mxtidy and TIDY_MARKUP:
|
|
nerrors, nwarnings, data, errordata = _mxtidy.tidy(data, output_xhtml=1, numeric_entities=1, wrap=0)
|
|
if data.count('<body'):
|
|
data = data.split('<body', 1)[1]
|
|
if data.count('>'):
|
|
data = data.split('>', 1)[1]
|
|
if data.count('</body'):
|
|
data = data.split('</body', 1)[0]
|
|
data = data.strip().replace('\r\n', '\n')
|
|
return data
|
|
|
|
class _FeedURLHandler(urllib2.HTTPRedirectHandler, urllib2.HTTPDefaultErrorHandler):
|
|
def http_error_default(self, req, fp, code, msg, headers):
|
|
if ((code / 100) == 3) and (code != 304):
|
|
return self.http_error_302(req, fp, code, msg, headers)
|
|
infourl = urllib.addinfourl(fp, headers, req.get_full_url())
|
|
infourl.status = code
|
|
return infourl
|
|
|
|
def http_error_302(self, req, fp, code, msg, headers):
|
|
if headers.dict.has_key('location'):
|
|
infourl = urllib2.HTTPRedirectHandler.http_error_302(self, req, fp, code, msg, headers)
|
|
else:
|
|
infourl = urllib.addinfourl(fp, headers, req.get_full_url())
|
|
if not hasattr(infourl, 'status'):
|
|
infourl.status = code
|
|
return infourl
|
|
|
|
def http_error_301(self, req, fp, code, msg, headers):
|
|
if headers.dict.has_key('location'):
|
|
infourl = urllib2.HTTPRedirectHandler.http_error_301(self, req, fp, code, msg, headers)
|
|
else:
|
|
infourl = urllib.addinfourl(fp, headers, req.get_full_url())
|
|
if not hasattr(infourl, 'status'):
|
|
infourl.status = code
|
|
return infourl
|
|
|
|
http_error_300 = http_error_302
|
|
http_error_303 = http_error_302
|
|
http_error_307 = http_error_302
|
|
|
|
def _open_resource(url_file_stream_or_string, etag, modified, agent, referrer, handlers):
|
|
"""URL, filename, or string --> stream
|
|
|
|
This function lets you define parsers that take any input source
|
|
(URL, pathname to local or network file, or actual data as a string)
|
|
and deal with it in a uniform manner. Returned object is guaranteed
|
|
to have all the basic stdio read methods (read, readline, readlines).
|
|
Just .close() the object when you're done with it.
|
|
|
|
If the etag argument is supplied, it will be used as the value of an
|
|
If-None-Match request header.
|
|
|
|
If the modified argument is supplied, it must be a tuple of 9 integers
|
|
as returned by gmtime() in the standard Python time module. This MUST
|
|
be in GMT (Greenwich Mean Time). The formatted date/time will be used
|
|
as the value of an If-Modified-Since request header.
|
|
|
|
If the agent argument is supplied, it will be used as the value of a
|
|
User-Agent request header.
|
|
|
|
If the referrer argument is supplied, it will be used as the value of a
|
|
Referer[sic] request header.
|
|
|
|
If handlers is supplied, it is a list of handlers used to build a
|
|
urllib2 opener.
|
|
"""
|
|
|
|
if hasattr(url_file_stream_or_string, "read"):
|
|
return url_file_stream_or_string
|
|
|
|
if url_file_stream_or_string == "-":
|
|
return sys.stdin
|
|
|
|
if urlparse.urlparse(url_file_stream_or_string)[0] in ('http', 'https', 'ftp'):
|
|
if not agent:
|
|
agent = USER_AGENT
|
|
# test for inline user:password for basic auth
|
|
auth = None
|
|
if base64:
|
|
urltype, rest = urllib.splittype(url_file_stream_or_string)
|
|
realhost, rest = urllib.splithost(rest)
|
|
if realhost:
|
|
user_passwd, realhost = urllib.splituser(realhost)
|
|
if user_passwd:
|
|
url_file_stream_or_string = "%s://%s%s" % (urltype, realhost, rest)
|
|
auth = base64.encodestring(user_passwd).strip()
|
|
# try to open with urllib2 (to use optional headers)
|
|
request = urllib2.Request(url_file_stream_or_string)
|
|
request.add_header("User-Agent", agent)
|
|
if etag:
|
|
request.add_header("If-None-Match", etag)
|
|
if modified:
|
|
# format into an RFC 1123-compliant timestamp. We can't use
|
|
# time.strftime() since the %a and %b directives can be affected
|
|
# by the current locale, but RFC 2616 states that dates must be
|
|
# in English.
|
|
short_weekdays = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]
|
|
months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
|
|
request.add_header("If-Modified-Since", "%s, %02d %s %04d %02d:%02d:%02d GMT" % (short_weekdays[modified[6]], modified[2], months[modified[1] - 1], modified[0], modified[3], modified[4], modified[5]))
|
|
if referrer:
|
|
request.add_header("Referer", referrer)
|
|
if gzip and zlib:
|
|
request.add_header("Accept-encoding", "gzip, deflate")
|
|
elif gzip:
|
|
request.add_header("Accept-encoding", "gzip")
|
|
elif zlib:
|
|
request.add_header("Accept-encoding", "deflate")
|
|
else:
|
|
request.add_header("Accept-encoding", "")
|
|
if auth:
|
|
request.add_header("Authorization", "Basic %s" % auth)
|
|
if ACCEPT_HEADER:
|
|
request.add_header("Accept", ACCEPT_HEADER)
|
|
opener = apply(urllib2.build_opener, tuple([_FeedURLHandler()] + handlers))
|
|
opener.addheaders = [] # RMK - must clear so we only send our custom User-Agent
|
|
try:
|
|
return opener.open(request)
|
|
finally:
|
|
opener.close() # JohnD
|
|
|
|
# try to open with native open function (if url_file_stream_or_string is a filename)
|
|
try:
|
|
return open(url_file_stream_or_string)
|
|
except:
|
|
pass
|
|
|
|
# treat url_file_stream_or_string as string
|
|
return _StringIO(str(url_file_stream_or_string))
|
|
|
|
_date_handlers = []
|
|
def registerDateHandler(func):
|
|
"""Register a date handler function (takes string, returns 9-tuple date in GMT)"""
|
|
_date_handlers.insert(0, func)
|
|
|
|
# ISO-8601 date parsing routines written by Fazal Majid.
|
|
# The ISO 8601 standard is very convoluted and irregular - a full ISO 8601
|
|
# parser is beyond the scope of feedparser and would be a worthwhile addition
|
|
# to the Python library.
|
|
# A single regular expression cannot parse ISO 8601 date formats into groups
|
|
# as the standard is highly irregular (for instance is 030104 2003-01-04 or
|
|
# 0301-04-01), so we use templates instead.
|
|
# Please note the order in templates is significant because we need a
|
|
# greedy match.
|
|
_iso8601_tmpl = ['YYYY-?MM-?DD', 'YYYY-MM', 'YYYY-?OOO',
|
|
'YY-?MM-?DD', 'YY-?OOO', 'YYYY',
|
|
'-YY-?MM', '-OOO', '-YY',
|
|
'--MM-?DD', '--MM',
|
|
'---DD',
|
|
'CC', '']
|
|
_iso8601_re = [
|
|
tmpl.replace(
|
|
'YYYY', r'(?P<year>\d{4})').replace(
|
|
'YY', r'(?P<year>\d\d)').replace(
|
|
'MM', r'(?P<month>[01]\d)').replace(
|
|
'DD', r'(?P<day>[0123]\d)').replace(
|
|
'OOO', r'(?P<ordinal>[0123]\d\d)').replace(
|
|
'CC', r'(?P<century>\d\d$)')
|
|
+ r'(T?(?P<hour>\d{2}):(?P<minute>\d{2})'
|
|
+ r'(:(?P<second>\d{2}))?'
|
|
+ r'(?P<tz>[+-](?P<tzhour>\d{2})(:(?P<tzmin>\d{2}))?|Z)?)?'
|
|
for tmpl in _iso8601_tmpl]
|
|
del tmpl
|
|
_iso8601_matches = [re.compile(regex).match for regex in _iso8601_re]
|
|
del regex
|
|
def _parse_date_iso8601(dateString):
|
|
"""Parse a variety of ISO-8601-compatible formats like 20040105"""
|
|
m = None
|
|
for _iso8601_match in _iso8601_matches:
|
|
m = _iso8601_match(dateString)
|
|
if m: break
|
|
if not m: return
|
|
if m.span() == (0, 0): return
|
|
params = m.groupdict()
|
|
ordinal = params.get("ordinal", 0)
|
|
if ordinal:
|
|
ordinal = int(ordinal)
|
|
else:
|
|
ordinal = 0
|
|
year = params.get("year", "--")
|
|
if not year or year == "--":
|
|
year = time.gmtime()[0]
|
|
elif len(year) == 2:
|
|
# ISO 8601 assumes current century, i.e. 93 -> 2093, NOT 1993
|
|
year = 100 * int(time.gmtime()[0] / 100) + int(year)
|
|
else:
|
|
year = int(year)
|
|
month = params.get("month", "-")
|
|
if not month or month == "-":
|
|
# ordinals are NOT normalized by mktime, we simulate them
|
|
# by setting month=1, day=ordinal
|
|
if ordinal:
|
|
month = 1
|
|
else:
|
|
month = time.gmtime()[1]
|
|
month = int(month)
|
|
day = params.get("day", 0)
|
|
if not day:
|
|
# see above
|
|
if ordinal:
|
|
day = ordinal
|
|
elif params.get("century", 0) or \
|
|
params.get("year", 0) or params.get("month", 0):
|
|
day = 1
|
|
else:
|
|
day = time.gmtime()[2]
|
|
else:
|
|
day = int(day)
|
|
# special case of the century - is the first year of the 21st century
|
|
# 2000 or 2001 ? The debate goes on...
|
|
if "century" in params.keys():
|
|
year = (int(params["century"]) - 1) * 100 + 1
|
|
# in ISO 8601 most fields are optional
|
|
for field in ["hour", "minute", "second", "tzhour", "tzmin"]:
|
|
if not params.get(field, None):
|
|
params[field] = 0
|
|
hour = int(params.get("hour", 0))
|
|
minute = int(params.get("minute", 0))
|
|
second = int(params.get("second", 0))
|
|
# weekday is normalized by mktime(), we can ignore it
|
|
weekday = 0
|
|
# daylight savings is complex, but not needed for feedparser's purposes
|
|
# as time zones, if specified, include mention of whether it is active
|
|
# (e.g. PST vs. PDT, CET). Using -1 is implementation-dependent and
|
|
# and most implementations have DST bugs
|
|
daylight_savings_flag = 0
|
|
tm = [year, month, day, hour, minute, second, weekday,
|
|
ordinal, daylight_savings_flag]
|
|
# ISO 8601 time zone adjustments
|
|
tz = params.get("tz")
|
|
if tz and tz != "Z":
|
|
if tz[0] == "-":
|
|
tm[3] += int(params.get("tzhour", 0))
|
|
tm[4] += int(params.get("tzmin", 0))
|
|
elif tz[0] == "+":
|
|
tm[3] -= int(params.get("tzhour", 0))
|
|
tm[4] -= int(params.get("tzmin", 0))
|
|
else:
|
|
return None
|
|
# Python's time.mktime() is a wrapper around the ANSI C mktime(3c)
|
|
# which is guaranteed to normalize d/m/y/h/m/s.
|
|
# Many implementations have bugs, but we'll pretend they don't.
|
|
return time.localtime(time.mktime(tm))
|
|
registerDateHandler(_parse_date_iso8601)
|
|
|
|
# 8-bit date handling routines written by ytrewq1.
|
|
_korean_year = u'\ub144' # b3e2 in euc-kr
|
|
_korean_month = u'\uc6d4' # bff9 in euc-kr
|
|
_korean_day = u'\uc77c' # c0cf in euc-kr
|
|
_korean_am = u'\uc624\uc804' # bfc0 c0fc in euc-kr
|
|
_korean_pm = u'\uc624\ud6c4' # bfc0 c8c4 in euc-kr
|
|
|
|
_korean_onblog_date_re = \
|
|
re.compile('(\d{4})%s\s+(\d{2})%s\s+(\d{2})%s\s+(\d{2}):(\d{2}):(\d{2})' % \
|
|
(_korean_year, _korean_month, _korean_day))
|
|
_korean_nate_date_re = \
|
|
re.compile(u'(\d{4})-(\d{2})-(\d{2})\s+(%s|%s)\s+(\d{,2}):(\d{,2}):(\d{,2})' % \
|
|
(_korean_am, _korean_pm))
|
|
def _parse_date_onblog(dateString):
|
|
"""Parse a string according to the OnBlog 8-bit date format"""
|
|
m = _korean_onblog_date_re.match(dateString)
|
|
if not m: return
|
|
w3dtfdate = "%(year)s-%(month)s-%(day)sT%(hour)s:%(minute)s:%(second)s%(zonediff)s" % \
|
|
{'year': m.group(1), 'month': m.group(2), 'day': m.group(3),\
|
|
'hour': m.group(4), 'minute': m.group(5), 'second': m.group(6),\
|
|
'zonediff': '+09:00'}
|
|
if _debug: sys.stderr.write("OnBlog date parsed as: %s\n" % w3dtfdate)
|
|
return _parse_date_w3dtf(w3dtfdate)
|
|
registerDateHandler(_parse_date_onblog)
|
|
|
|
def _parse_date_nate(dateString):
|
|
"""Parse a string according to the Nate 8-bit date format"""
|
|
m = _korean_nate_date_re.match(dateString)
|
|
if not m: return
|
|
hour = int(m.group(5))
|
|
ampm = m.group(4)
|
|
if (ampm == _korean_pm):
|
|
hour += 12
|
|
hour = str(hour)
|
|
if len(hour) == 1:
|
|
hour = '0' + hour
|
|
w3dtfdate = "%(year)s-%(month)s-%(day)sT%(hour)s:%(minute)s:%(second)s%(zonediff)s" % \
|
|
{'year': m.group(1), 'month': m.group(2), 'day': m.group(3),\
|
|
'hour': hour, 'minute': m.group(6), 'second': m.group(7),\
|
|
'zonediff': '+09:00'}
|
|
if _debug: sys.stderr.write("Nate date parsed as: %s\n" % w3dtfdate)
|
|
return _parse_date_w3dtf(w3dtfdate)
|
|
registerDateHandler(_parse_date_nate)
|
|
|
|
_mssql_date_re = \
|
|
re.compile('(\d{4})-(\d{2})-(\d{2})\s+(\d{2}):(\d{2}):(\d{2})\.\d+')
|
|
def _parse_date_mssql(dateString):
|
|
"""Parse a string according to the MS SQL date format"""
|
|
m = _mssql_date_re.match(dateString)
|
|
if not m: return
|
|
w3dtfdate = "%(year)s-%(month)s-%(day)sT%(hour)s:%(minute)s:%(second)s%(zonediff)s" % \
|
|
{'year': m.group(1), 'month': m.group(2), 'day': m.group(3),\
|
|
'hour': m.group(4), 'minute': m.group(5), 'second': m.group(6),\
|
|
'zonediff': '+09:00'}
|
|
if _debug: sys.stderr.write("MS SQL date parsed as: %s\n" % w3dtfdate)
|
|
return _parse_date_w3dtf(w3dtfdate)
|
|
registerDateHandler(_parse_date_mssql)
|
|
|
|
# Unicode strings for Greek date strings
|
|
_greek_months = \
|
|
{ \
|
|
u'\u0399\u03b1\u03bd': u'Jan', # c9e1ed in iso-8859-7
|
|
u'\u03a6\u03b5\u03b2': u'Feb', # d6e5e2 in iso-8859-7
|
|
u'\u039c\u03ac\u03ce': u'Mar', # ccdcfe in iso-8859-7
|
|
u'\u039c\u03b1\u03ce': u'Mar', # cce1fe in iso-8859-7
|
|
u'\u0391\u03c0\u03c1': u'Apr', # c1f0f1 in iso-8859-7
|
|
u'\u039c\u03ac\u03b9': u'May', # ccdce9 in iso-8859-7
|
|
u'\u039c\u03b1\u03ca': u'May', # cce1fa in iso-8859-7
|
|
u'\u039c\u03b1\u03b9': u'May', # cce1e9 in iso-8859-7
|
|
u'\u0399\u03bf\u03cd\u03bd': u'Jun', # c9effded in iso-8859-7
|
|
u'\u0399\u03bf\u03bd': u'Jun', # c9efed in iso-8859-7
|
|
u'\u0399\u03bf\u03cd\u03bb': u'Jul', # c9effdeb in iso-8859-7
|
|
u'\u0399\u03bf\u03bb': u'Jul', # c9f9eb in iso-8859-7
|
|
u'\u0391\u03cd\u03b3': u'Aug', # c1fde3 in iso-8859-7
|
|
u'\u0391\u03c5\u03b3': u'Aug', # c1f5e3 in iso-8859-7
|
|
u'\u03a3\u03b5\u03c0': u'Sep', # d3e5f0 in iso-8859-7
|
|
u'\u039f\u03ba\u03c4': u'Oct', # cfeaf4 in iso-8859-7
|
|
u'\u039d\u03bf\u03ad': u'Nov', # cdefdd in iso-8859-7
|
|
u'\u039d\u03bf\u03b5': u'Nov', # cdefe5 in iso-8859-7
|
|
u'\u0394\u03b5\u03ba': u'Dec', # c4e5ea in iso-8859-7
|
|
}
|
|
|
|
_greek_wdays = \
|
|
{ \
|
|
u'\u039a\u03c5\u03c1': u'Sun', # caf5f1 in iso-8859-7
|
|
u'\u0394\u03b5\u03c5': u'Mon', # c4e5f5 in iso-8859-7
|
|
u'\u03a4\u03c1\u03b9': u'Tue', # d4f1e9 in iso-8859-7
|
|
u'\u03a4\u03b5\u03c4': u'Wed', # d4e5f4 in iso-8859-7
|
|
u'\u03a0\u03b5\u03bc': u'Thu', # d0e5ec in iso-8859-7
|
|
u'\u03a0\u03b1\u03c1': u'Fri', # d0e1f1 in iso-8859-7
|
|
u'\u03a3\u03b1\u03b2': u'Sat', # d3e1e2 in iso-8859-7
|
|
}
|
|
|
|
_greek_date_format_re = \
|
|
re.compile(u'([^,]+),\s+(\d{2})\s+([^\s]+)\s+(\d{4})\s+(\d{2}):(\d{2}):(\d{2})\s+([^\s]+)')
|
|
|
|
def _parse_date_greek(dateString):
|
|
"""Parse a string according to a Greek 8-bit date format."""
|
|
m = _greek_date_format_re.match(dateString)
|
|
if not m: return
|
|
try:
|
|
wday = _greek_wdays[m.group(1)]
|
|
month = _greek_months[m.group(3)]
|
|
except:
|
|
return
|
|
rfc822date = "%(wday)s, %(day)s %(month)s %(year)s %(hour)s:%(minute)s:%(second)s %(zonediff)s" % \
|
|
{'wday': wday, 'day': m.group(2), 'month': month, 'year': m.group(4),\
|
|
'hour': m.group(5), 'minute': m.group(6), 'second': m.group(7),\
|
|
'zonediff': m.group(8)}
|
|
if _debug: sys.stderr.write("Greek date parsed as: %s\n" % rfc822date)
|
|
return _parse_date_rfc822(rfc822date)
|
|
registerDateHandler(_parse_date_greek)
|
|
|
|
# Unicode strings for Hungarian date strings
|
|
_hungarian_months = \
|
|
{ \
|
|
u'janu\u00e1r': u'01', # e1 in iso-8859-2
|
|
u'febru\u00e1ri': u'02', # e1 in iso-8859-2
|
|
u'm\u00e1rcius': u'03', # e1 in iso-8859-2
|
|
u'\u00e1prilis': u'04', # e1 in iso-8859-2
|
|
u'm\u00e1ujus': u'05', # e1 in iso-8859-2
|
|
u'j\u00fanius': u'06', # fa in iso-8859-2
|
|
u'j\u00falius': u'07', # fa in iso-8859-2
|
|
u'augusztus': u'08',
|
|
u'szeptember': u'09',
|
|
u'okt\u00f3ber': u'10', # f3 in iso-8859-2
|
|
u'november': u'11',
|
|
u'december': u'12',
|
|
}
|
|
|
|
_hungarian_date_format_re = \
|
|
re.compile(u'(\d{4})-([^-]+)-(\d{,2})T(\d{,2}):(\d{2})((\+|-)(\d{,2}:\d{2}))')
|
|
|
|
def _parse_date_hungarian(dateString):
|
|
"""Parse a string according to a Hungarian 8-bit date format."""
|
|
m = _hungarian_date_format_re.match(dateString)
|
|
if not m: return
|
|
try:
|
|
month = _hungarian_months[m.group(2)]
|
|
day = m.group(3)
|
|
if len(day) == 1:
|
|
day = '0' + day
|
|
hour = m.group(4)
|
|
if len(hour) == 1:
|
|
hour = '0' + hour
|
|
except:
|
|
return
|
|
w3dtfdate = "%(year)s-%(month)s-%(day)sT%(hour)s:%(minute)s%(zonediff)s" % \
|
|
{'year': m.group(1), 'month': month, 'day': day,\
|
|
'hour': hour, 'minute': m.group(5),\
|
|
'zonediff': m.group(6)}
|
|
if _debug: sys.stderr.write("Hungarian date parsed as: %s\n" % w3dtfdate)
|
|
return _parse_date_w3dtf(w3dtfdate)
|
|
registerDateHandler(_parse_date_hungarian)
|
|
|
|
# W3DTF-style date parsing adapted from PyXML xml.utils.iso8601, written by
|
|
# Drake and licensed under the Python license. Removed all range checking
|
|
# for month, day, hour, minute, and second, since mktime will normalize
|
|
# these later
|
|
def _parse_date_w3dtf(dateString):
|
|
def __extract_date(m):
|
|
year = int(m.group("year"))
|
|
if year < 100:
|
|
year = 100 * int(time.gmtime()[0] / 100) + int(year)
|
|
if year < 1000:
|
|
return 0, 0, 0
|
|
julian = m.group("julian")
|
|
if julian:
|
|
julian = int(julian)
|
|
month = julian / 30 + 1
|
|
day = julian % 30 + 1
|
|
jday = None
|
|
while jday != julian:
|
|
t = time.mktime((year, month, day, 0, 0, 0, 0, 0, 0))
|
|
jday = time.gmtime(t)[-2]
|
|
diff = abs(jday - julian)
|
|
if jday > julian:
|
|
if diff < day:
|
|
day = day - diff
|
|
else:
|
|
month = month - 1
|
|
day = 31
|
|
elif jday < julian:
|
|
if day + diff < 28:
|
|
day = day + diff
|
|
else:
|
|
month = month + 1
|
|
return year, month, day
|
|
month = m.group("month")
|
|
day = 1
|
|
if month is None:
|
|
month = 1
|
|
else:
|
|
month = int(month)
|
|
day = m.group("day")
|
|
if day:
|
|
day = int(day)
|
|
else:
|
|
day = 1
|
|
return year, month, day
|
|
|
|
def __extract_time(m):
|
|
if not m:
|
|
return 0, 0, 0
|
|
hours = m.group("hours")
|
|
if not hours:
|
|
return 0, 0, 0
|
|
hours = int(hours)
|
|
minutes = int(m.group("minutes"))
|
|
seconds = m.group("seconds")
|
|
if seconds:
|
|
seconds = int(seconds)
|
|
else:
|
|
seconds = 0
|
|
return hours, minutes, seconds
|
|
|
|
def __extract_tzd(m):
|
|
"""Return the Time Zone Designator as an offset in seconds from UTC."""
|
|
if not m:
|
|
return 0
|
|
tzd = m.group("tzd")
|
|
if not tzd:
|
|
return 0
|
|
if tzd == "Z":
|
|
return 0
|
|
hours = int(m.group("tzdhours"))
|
|
minutes = m.group("tzdminutes")
|
|
if minutes:
|
|
minutes = int(minutes)
|
|
else:
|
|
minutes = 0
|
|
offset = (hours*60 + minutes) * 60
|
|
if tzd[0] == "+":
|
|
return -offset
|
|
return offset
|
|
|
|
__date_re = ("(?P<year>\d\d\d\d)"
|
|
"(?:(?P<dsep>-|)"
|
|
"(?:(?P<julian>\d\d\d)"
|
|
"|(?P<month>\d\d)(?:(?P=dsep)(?P<day>\d\d))?))?")
|
|
__tzd_re = "(?P<tzd>[-+](?P<tzdhours>\d\d)(?::?(?P<tzdminutes>\d\d))|Z)"
|
|
__tzd_rx = re.compile(__tzd_re)
|
|
__time_re = ("(?P<hours>\d\d)(?P<tsep>:|)(?P<minutes>\d\d)"
|
|
"(?:(?P=tsep)(?P<seconds>\d\d(?:[.,]\d+)?))?"
|
|
+ __tzd_re)
|
|
__datetime_re = "%s(?:T%s)?" % (__date_re, __time_re)
|
|
__datetime_rx = re.compile(__datetime_re)
|
|
m = __datetime_rx.match(dateString)
|
|
if (m is None) or (m.group() != dateString): return
|
|
gmt = __extract_date(m) + __extract_time(m) + (0, 0, 0)
|
|
if gmt[0] == 0: return
|
|
return time.gmtime(time.mktime(gmt) + __extract_tzd(m) - time.timezone)
|
|
registerDateHandler(_parse_date_w3dtf)
|
|
|
|
def _parse_date_rfc822(dateString):
|
|
"""Parse an RFC822, RFC1123, RFC2822, or asctime-style date"""
|
|
tm = rfc822.parsedate_tz(dateString)
|
|
if tm:
|
|
return time.gmtime(rfc822.mktime_tz(tm))
|
|
# rfc822.py defines several time zones, but we define some extra ones.
|
|
# "ET" is equivalent to "EST", etc.
|
|
_additional_timezones = {'AT': -400, 'ET': -500, 'CT': -600, 'MT': -700, 'PT': -800}
|
|
rfc822._timezones.update(_additional_timezones)
|
|
registerDateHandler(_parse_date_rfc822)
|
|
|
|
def _parse_date(dateString):
|
|
"""Parses a variety of date formats into a 9-tuple in GMT"""
|
|
for handler in _date_handlers:
|
|
try:
|
|
date9tuple = handler(dateString)
|
|
if not date9tuple: continue
|
|
if len(date9tuple) != 9:
|
|
if _debug: sys.stderr.write("date handler function must return 9-tuple\n")
|
|
raise ValueError
|
|
map(int, date9tuple)
|
|
return date9tuple
|
|
except Exception, e:
|
|
if _debug: sys.stderr.write("%s raised %s\n" % (handler.__name__, repr(e)))
|
|
pass
|
|
return None
|
|
|
|
def _getCharacterEncoding(http_headers, xml_data):
|
|
"""Get the character encoding of the XML document
|
|
|
|
http_headers is a dictionary
|
|
xml_data is a raw string (not Unicode)
|
|
|
|
This is so much trickier than it sounds, it's not even funny.
|
|
According to RFC 3023 ("XML Media Types"), if the HTTP Content-Type
|
|
is application/xml, application/*+xml,
|
|
application/xml-external-parsed-entity, or application/xml-dtd,
|
|
the encoding given in the charset parameter of the HTTP Content-Type
|
|
takes precedence over the encoding given in the XML prefix within the
|
|
document, and defaults to "utf-8" if neither are specified. But, if
|
|
the HTTP Content-Type is text/xml, text/*+xml, or
|
|
text/xml-external-parsed-entity, the encoding given in the XML prefix
|
|
within the document is ALWAYS IGNORED and only the encoding given in
|
|
the charset parameter of the HTTP Content-Type header should be
|
|
respected, and it defaults to "us-ascii" if not specified.
|
|
|
|
Furthermore, discussion on the atom-syntax mailing list with the
|
|
author of RFC 3023 leads me to the conclusion that any document
|
|
served with a Content-Type of text/* and no charset parameter
|
|
must be treated as us-ascii. (We now do this.) And also that it
|
|
must always be flagged as non-well-formed. (We now do this too.)
|
|
|
|
If Content-Type is unspecified (input was local file or non-HTTP source)
|
|
or unrecognized (server just got it totally wrong), then go by the
|
|
encoding given in the XML prefix of the document and default to
|
|
"iso-8859-1" as per the HTTP specification (RFC 2616).
|
|
|
|
Then, assuming we didn't find a character encoding in the HTTP headers
|
|
(and the HTTP Content-type allowed us to look in the body), we need
|
|
to sniff the first few bytes of the XML data and try to determine
|
|
whether the encoding is ASCII-compatible. Section F of the XML
|
|
specification shows the way here:
|
|
http://www.w3.org/TR/REC-xml/#sec-guessing-no-ext-info
|
|
|
|
If the sniffed encoding is not ASCII-compatible, we need to make it
|
|
ASCII compatible so that we can sniff further into the XML declaration
|
|
to find the encoding attribute, which will tell us the true encoding.
|
|
|
|
Of course, none of this guarantees that we will be able to parse the
|
|
feed in the declared character encoding (assuming it was declared
|
|
correctly, which many are not). CJKCodecs and iconv_codec help a lot;
|
|
you should definitely install them if you can.
|
|
http://cjkpython.i18n.org/
|
|
"""
|
|
|
|
def _parseHTTPContentType(content_type):
|
|
"""takes HTTP Content-Type header and returns (content type, charset)
|
|
|
|
If no charset is specified, returns (content type, '')
|
|
If no content type is specified, returns ('', '')
|
|
Both return parameters are guaranteed to be lowercase strings
|
|
"""
|
|
content_type = content_type or ''
|
|
content_type, params = cgi.parse_header(content_type)
|
|
return content_type, params.get('charset', '').replace("'", "")
|
|
|
|
sniffed_xml_encoding = ''
|
|
xml_encoding = ''
|
|
true_encoding = ''
|
|
http_content_type, http_encoding = _parseHTTPContentType(http_headers.get("content-type"))
|
|
# Must sniff for non-ASCII-compatible character encodings before
|
|
# searching for XML declaration. This heuristic is defined in
|
|
# section F of the XML specification:
|
|
# http://www.w3.org/TR/REC-xml/#sec-guessing-no-ext-info
|
|
try:
|
|
if xml_data[:4] == '\x4c\x6f\xa7\x94':
|
|
# EBCDIC
|
|
xml_data = _ebcdic_to_ascii(xml_data)
|
|
elif xml_data[:4] == '\x00\x3c\x00\x3f':
|
|
# UTF-16BE
|
|
sniffed_xml_encoding = 'utf-16be'
|
|
xml_data = unicode(xml_data, 'utf-16be').encode('utf-8')
|
|
elif (len(xml_data) >= 4) and (xml_data[:2] == '\xfe\xff') and (xml_data[2:4] != '\x00\x00'):
|
|
# UTF-16BE with BOM
|
|
sniffed_xml_encoding = 'utf-16be'
|
|
xml_data = unicode(xml_data[2:], 'utf-16be').encode('utf-8')
|
|
elif xml_data[:4] == '\x3c\x00\x3f\x00':
|
|
# UTF-16LE
|
|
sniffed_xml_encoding = 'utf-16le'
|
|
xml_data = unicode(xml_data, 'utf-16le').encode('utf-8')
|
|
elif (len(xml_data) >= 4) and (xml_data[:2] == '\xff\xfe') and (xml_data[2:4] != '\x00\x00'):
|
|
# UTF-16LE with BOM
|
|
sniffed_xml_encoding = 'utf-16le'
|
|
xml_data = unicode(xml_data[2:], 'utf-16le').encode('utf-8')
|
|
elif xml_data[:4] == '\x00\x00\x00\x3c':
|
|
# UTF-32BE
|
|
sniffed_xml_encoding = 'utf-32be'
|
|
xml_data = unicode(xml_data, 'utf-32be').encode('utf-8')
|
|
elif xml_data[:4] == '\x3c\x00\x00\x00':
|
|
# UTF-32LE
|
|
sniffed_xml_encoding = 'utf-32le'
|
|
xml_data = unicode(xml_data, 'utf-32le').encode('utf-8')
|
|
elif xml_data[:4] == '\x00\x00\xfe\xff':
|
|
# UTF-32BE with BOM
|
|
sniffed_xml_encoding = 'utf-32be'
|
|
xml_data = unicode(xml_data[4:], 'utf-32be').encode('utf-8')
|
|
elif xml_data[:4] == '\xff\xfe\x00\x00':
|
|
# UTF-32LE with BOM
|
|
sniffed_xml_encoding = 'utf-32le'
|
|
xml_data = unicode(xml_data[4:], 'utf-32le').encode('utf-8')
|
|
elif xml_data[:3] == '\xef\xbb\xbf':
|
|
# UTF-8 with BOM
|
|
sniffed_xml_encoding = 'utf-8'
|
|
xml_data = unicode(xml_data[3:], 'utf-8').encode('utf-8')
|
|
else:
|
|
# ASCII-compatible
|
|
pass
|
|
xml_encoding_match = re.compile('^<\?.*encoding=[\'"](.*?)[\'"].*\?>').match(xml_data)
|
|
except:
|
|
xml_encoding_match = None
|
|
if xml_encoding_match:
|
|
xml_encoding = xml_encoding_match.groups()[0].lower()
|
|
if sniffed_xml_encoding and (xml_encoding in ('iso-10646-ucs-2', 'ucs-2', 'csunicode', 'iso-10646-ucs-4', 'ucs-4', 'csucs4', 'utf-16', 'utf-32', 'utf_16', 'utf_32', 'utf16', 'u16')):
|
|
xml_encoding = sniffed_xml_encoding
|
|
acceptable_content_type = 0
|
|
application_content_types = ('application/xml', 'application/xml-dtd', 'application/xml-external-parsed-entity')
|
|
text_content_types = ('text/xml', 'text/xml-external-parsed-entity')
|
|
if (http_content_type in application_content_types) or \
|
|
(http_content_type.startswith('application/') and http_content_type.endswith('+xml')):
|
|
acceptable_content_type = 1
|
|
true_encoding = http_encoding or xml_encoding or 'utf-8'
|
|
elif (http_content_type in text_content_types) or \
|
|
(http_content_type.startswith('text/')) and http_content_type.endswith('+xml'):
|
|
acceptable_content_type = 1
|
|
true_encoding = http_encoding or 'us-ascii'
|
|
elif http_content_type.startswith('text/'):
|
|
true_encoding = http_encoding or 'us-ascii'
|
|
elif http_headers and (not http_headers.has_key('content-type')):
|
|
true_encoding = xml_encoding or 'iso-8859-1'
|
|
else:
|
|
true_encoding = xml_encoding or 'utf-8'
|
|
return true_encoding, http_encoding, xml_encoding, sniffed_xml_encoding, acceptable_content_type
|
|
|
|
def _toUTF8(data, encoding):
|
|
"""Changes an XML data stream on the fly to specify a new encoding
|
|
|
|
data is a raw sequence of bytes (not Unicode) that is presumed to be in %encoding already
|
|
encoding is a string recognized by encodings.aliases
|
|
"""
|
|
if _debug: sys.stderr.write('entering _toUTF8, trying encoding %s\n' % encoding)
|
|
# strip Byte Order Mark (if present)
|
|
if (len(data) >= 4) and (data[:2] == '\xfe\xff') and (data[2:4] != '\x00\x00'):
|
|
if _debug:
|
|
sys.stderr.write('stripping BOM\n')
|
|
if encoding != 'utf-16be':
|
|
sys.stderr.write('trying utf-16be instead\n')
|
|
encoding = 'utf-16be'
|
|
data = data[2:]
|
|
elif (len(data) >= 4) and (data[:2] == '\xff\xfe') and (data[2:4] != '\x00\x00'):
|
|
if _debug:
|
|
sys.stderr.write('stripping BOM\n')
|
|
if encoding != 'utf-16le':
|
|
sys.stderr.write('trying utf-16le instead\n')
|
|
encoding = 'utf-16le'
|
|
data = data[2:]
|
|
elif data[:3] == '\xef\xbb\xbf':
|
|
if _debug:
|
|
sys.stderr.write('stripping BOM\n')
|
|
if encoding != 'utf-8':
|
|
sys.stderr.write('trying utf-8 instead\n')
|
|
encoding = 'utf-8'
|
|
data = data[3:]
|
|
elif data[:4] == '\x00\x00\xfe\xff':
|
|
if _debug:
|
|
sys.stderr.write('stripping BOM\n')
|
|
if encoding != 'utf-32be':
|
|
sys.stderr.write('trying utf-32be instead\n')
|
|
encoding = 'utf-32be'
|
|
data = data[4:]
|
|
elif data[:4] == '\xff\xfe\x00\x00':
|
|
if _debug:
|
|
sys.stderr.write('stripping BOM\n')
|
|
if encoding != 'utf-32le':
|
|
sys.stderr.write('trying utf-32le instead\n')
|
|
encoding = 'utf-32le'
|
|
data = data[4:]
|
|
newdata = unicode(data, encoding)
|
|
if _debug: sys.stderr.write('successfully converted %s data to unicode\n' % encoding)
|
|
declmatch = re.compile('^<\?xml[^>]*?>')
|
|
newdecl = """<?xml version='1.0' encoding='utf-8'?>"""
|
|
if declmatch.search(newdata):
|
|
newdata = declmatch.sub(newdecl, newdata)
|
|
else:
|
|
newdata = newdecl + u'\n' + newdata
|
|
return newdata.encode("utf-8")
|
|
|
|
def _stripDoctype(data):
|
|
"""Strips DOCTYPE from XML document, returns (rss_version, stripped_data)
|
|
|
|
rss_version may be "rss091n" or None
|
|
stripped_data is the same XML document, minus the DOCTYPE
|
|
"""
|
|
entity_pattern = re.compile(r'<!ENTITY([^>]*?)>', re.MULTILINE)
|
|
data = entity_pattern.sub('', data)
|
|
doctype_pattern = re.compile(r'<!DOCTYPE([^>]*?)>', re.MULTILINE)
|
|
doctype_results = doctype_pattern.findall(data)
|
|
doctype = doctype_results and doctype_results[0] or ''
|
|
if doctype.lower().count('netscape'):
|
|
version = 'rss091n'
|
|
else:
|
|
version = None
|
|
data = doctype_pattern.sub('', data)
|
|
return version, data
|
|
|
|
def parse(url_file_stream_or_string, etag=None, modified=None, agent=None, referrer=None, handlers=[]):
|
|
"""Parse a feed from a URL, file, stream, or string"""
|
|
result = FeedParserDict()
|
|
result['feed'] = FeedParserDict()
|
|
result['entries'] = []
|
|
if _XML_AVAILABLE:
|
|
result['bozo'] = 0
|
|
if type(handlers) == types.InstanceType:
|
|
handlers = [handlers]
|
|
try:
|
|
f = _open_resource(url_file_stream_or_string, etag, modified, agent, referrer, handlers)
|
|
data = f.read()
|
|
except Exception, e:
|
|
result['bozo'] = 1
|
|
result['bozo_exception'] = e
|
|
data = ''
|
|
f = None
|
|
|
|
# if feed is gzip-compressed, decompress it
|
|
if f and data and hasattr(f, "headers"):
|
|
if gzip and f.headers.get('content-encoding', '') == 'gzip':
|
|
try:
|
|
data = gzip.GzipFile(fileobj=_StringIO(data)).read()
|
|
except Exception, e:
|
|
# Some feeds claim to be gzipped but they're not, so
|
|
# we get garbage. Ideally, we should re-request the
|
|
# feed without the "Accept-encoding: gzip" header,
|
|
# but we don't.
|
|
result['bozo'] = 1
|
|
result['bozo_exception'] = e
|
|
data = ''
|
|
elif zlib and f.headers.get('content-encoding', '') == 'deflate':
|
|
try:
|
|
data = zlib.decompress(data, -zlib.MAX_WBITS)
|
|
except Exception, e:
|
|
result['bozo'] = 1
|
|
result['bozo_exception'] = e
|
|
data = ''
|
|
|
|
# save HTTP headers
|
|
if hasattr(f, "info"):
|
|
info = f.info()
|
|
result["etag"] = info.getheader("ETag")
|
|
last_modified = info.getheader("Last-Modified")
|
|
if last_modified:
|
|
result["modified"] = _parse_date(last_modified)
|
|
if hasattr(f, "url"):
|
|
result["url"] = f.url
|
|
result["status"] = 200
|
|
if hasattr(f, "status"):
|
|
result["status"] = f.status
|
|
if hasattr(f, "headers"):
|
|
result["headers"] = f.headers.dict
|
|
if hasattr(f, "close"):
|
|
f.close()
|
|
|
|
# there are four encodings to keep track of:
|
|
# - http_encoding is the encoding declared in the Content-Type HTTP header
|
|
# - xml_encoding is the encoding declared in the <?xml declaration
|
|
# - sniffed_encoding is the encoding sniffed from the first 4 bytes of the XML data
|
|
# - result['encoding'] is the actual encoding, as per RFC 3023 and a variety of other conflicting specifications
|
|
http_headers = result.get("headers", {})
|
|
result['encoding'], http_encoding, xml_encoding, sniffed_xml_encoding, acceptable_content_type = \
|
|
_getCharacterEncoding(http_headers, data)
|
|
if http_headers and (not acceptable_content_type):
|
|
if http_headers.has_key('content-type'):
|
|
bozo_message = '%s is not an XML media type' % http_headers['content-type']
|
|
else:
|
|
bozo_message = 'no Content-type specified'
|
|
result['bozo'] = 1
|
|
result['bozo_exception'] = NonXMLContentType(bozo_message)
|
|
|
|
result['version'], data = _stripDoctype(data)
|
|
|
|
baseuri = http_headers.get('content-location', result.get('url'))
|
|
baselang = http_headers.get('content-language', None)
|
|
|
|
# if server sent 304, we're done
|
|
if result.get("status", 0) == 304:
|
|
result['version'] = ''
|
|
result['debug_message'] = "The feed has not changed since you last checked, " + \
|
|
"so the server sent no data. This is a feature, not a bug!"
|
|
return result
|
|
|
|
# if there was a problem downloading, we're done
|
|
if not data:
|
|
return result
|
|
|
|
# determine character encoding
|
|
use_strict_parser = 0
|
|
known_encoding = 0
|
|
tried_encodings = []
|
|
for proposed_encoding in (result['encoding'], xml_encoding, sniffed_xml_encoding, 'utf-8', 'windows-1252'):
|
|
if proposed_encoding in tried_encodings: continue
|
|
if not proposed_encoding: continue
|
|
try:
|
|
data = _toUTF8(data, proposed_encoding)
|
|
known_encoding = 1
|
|
use_strict_parser = 1
|
|
break
|
|
except:
|
|
pass
|
|
tried_encodings.append(proposed_encoding)
|
|
if not known_encoding:
|
|
result['bozo'] = 1
|
|
result['bozo_exception'] = CharacterEncodingUnknown( \
|
|
"document encoding unknown, I tried " + \
|
|
"%s, %s, utf-8, and windows-1252 but nothing worked" % \
|
|
(result['encoding'], xml_encoding))
|
|
result['encoding'] = ''
|
|
elif proposed_encoding != result['encoding']:
|
|
result['bozo'] = 1
|
|
result['bozo_exception'] = CharacterEncodingOverride( \
|
|
"documented declared as %s, but parsed as %s" % \
|
|
(result['encoding'], proposed_encoding))
|
|
result['encoding'] = proposed_encoding
|
|
|
|
if not _XML_AVAILABLE:
|
|
use_strict_parser = 0
|
|
if use_strict_parser:
|
|
# initialize the SAX parser
|
|
feedparser = _StrictFeedParser(baseuri, baselang, 'utf-8')
|
|
saxparser = xml.sax.make_parser(PREFERRED_XML_PARSERS)
|
|
saxparser.setFeature(xml.sax.handler.feature_namespaces, 1)
|
|
saxparser.setContentHandler(feedparser)
|
|
saxparser.setErrorHandler(feedparser)
|
|
source = xml.sax.xmlreader.InputSource()
|
|
source.setByteStream(_StringIO(data))
|
|
if hasattr(saxparser, '_ns_stack'):
|
|
# work around bug in built-in SAX parser (doesn't recognize xml: namespace)
|
|
# PyXML doesn't have this problem, and it doesn't have _ns_stack either
|
|
saxparser._ns_stack.append({'http://www.w3.org/XML/1998/namespace':'xml'})
|
|
try:
|
|
saxparser.parse(source)
|
|
except Exception, e:
|
|
if _debug:
|
|
import traceback
|
|
traceback.print_stack()
|
|
traceback.print_exc()
|
|
sys.stderr.write('xml parsing failed\n')
|
|
result['bozo'] = 1
|
|
result['bozo_exception'] = feedparser.exc or e
|
|
use_strict_parser = 0
|
|
if not use_strict_parser:
|
|
feedparser = _LooseFeedParser(baseuri, baselang, known_encoding and 'utf-8' or '')
|
|
feedparser.feed(data)
|
|
result['feed'] = feedparser.feeddata
|
|
result['entries'] = feedparser.entries
|
|
result['version'] = result['version'] or feedparser.version
|
|
return result
|
|
|
|
if __name__ == '__main__':
|
|
if not sys.argv[1:]:
|
|
print __doc__
|
|
sys.exit(0)
|
|
else:
|
|
urls = sys.argv[1:]
|
|
zopeCompatibilityHack()
|
|
from pprint import pprint
|
|
for url in urls:
|
|
print url
|
|
print
|
|
result = parse(url)
|
|
pprint(result)
|
|
print
|
|
|
|
#REVISION HISTORY
|
|
#1.0 - 9/27/2002 - MAP - fixed namespace processing on prefixed RSS 2.0 elements,
|
|
# added Simon Fell's test suite
|
|
#1.1 - 9/29/2002 - MAP - fixed infinite loop on incomplete CDATA sections
|
|
#2.0 - 10/19/2002
|
|
# JD - use inchannel to watch out for image and textinput elements which can
|
|
# also contain title, link, and description elements
|
|
# JD - check for isPermaLink="false" attribute on guid elements
|
|
# JD - replaced openAnything with open_resource supporting ETag and
|
|
# If-Modified-Since request headers
|
|
# JD - parse now accepts etag, modified, agent, and referrer optional
|
|
# arguments
|
|
# JD - modified parse to return a dictionary instead of a tuple so that any
|
|
# etag or modified information can be returned and cached by the caller
|
|
#2.0.1 - 10/21/2002 - MAP - changed parse() so that if we don't get anything
|
|
# because of etag/modified, return the old etag/modified to the caller to
|
|
# indicate why nothing is being returned
|
|
#2.0.2 - 10/21/2002 - JB - added the inchannel to the if statement, otherwise its
|
|
# useless. Fixes the problem JD was addressing by adding it.
|
|
#2.1 - 11/14/2002 - MAP - added gzip support
|
|
#2.2 - 1/27/2003 - MAP - added attribute support, admin:generatorAgent.
|
|
# start_admingeneratoragent is an example of how to handle elements with
|
|
# only attributes, no content.
|
|
#2.3 - 6/11/2003 - MAP - added USER_AGENT for default (if caller doesn't specify);
|
|
# also, make sure we send the User-Agent even if urllib2 isn't available.
|
|
# Match any variation of backend.userland.com/rss namespace.
|
|
#2.3.1 - 6/12/2003 - MAP - if item has both link and guid, return both as-is.
|
|
#2.4 - 7/9/2003 - MAP - added preliminary Pie/Atom/Echo support based on Sam Ruby's
|
|
# snapshot of July 1 <http://www.intertwingly.net/blog/1506.html>; changed
|
|
# project name
|
|
#2.5 - 7/25/2003 - MAP - changed to Python license (all contributors agree);
|
|
# removed unnecessary urllib code -- urllib2 should always be available anyway;
|
|
# return actual url, status, and full HTTP headers (as result['url'],
|
|
# result['status'], and result['headers']) if parsing a remote feed over HTTP --
|
|
# this should pass all the HTTP tests at <http://diveintomark.org/tests/client/http/>;
|
|
# added the latest namespace-of-the-week for RSS 2.0
|
|
#2.5.1 - 7/26/2003 - RMK - clear opener.addheaders so we only send our custom
|
|
# User-Agent (otherwise urllib2 sends two, which confuses some servers)
|
|
#2.5.2 - 7/28/2003 - MAP - entity-decode inline xml properly; added support for
|
|
# inline <xhtml:body> and <xhtml:div> as used in some RSS 2.0 feeds
|
|
#2.5.3 - 8/6/2003 - TvdV - patch to track whether we're inside an image or
|
|
# textInput, and also to return the character encoding (if specified)
|
|
#2.6 - 1/1/2004 - MAP - dc:author support (MarekK); fixed bug tracking
|
|
# nested divs within content (JohnD); fixed missing sys import (JohanS);
|
|
# fixed regular expression to capture XML character encoding (Andrei);
|
|
# added support for Atom 0.3-style links; fixed bug with textInput tracking;
|
|
# added support for cloud (MartijnP); added support for multiple
|
|
# category/dc:subject (MartijnP); normalize content model: "description" gets
|
|
# description (which can come from description, summary, or full content if no
|
|
# description), "content" gets dict of base/language/type/value (which can come
|
|
# from content:encoded, xhtml:body, content, or fullitem);
|
|
# fixed bug matching arbitrary Userland namespaces; added xml:base and xml:lang
|
|
# tracking; fixed bug tracking unknown tags; fixed bug tracking content when
|
|
# <content> element is not in default namespace (like Pocketsoap feed);
|
|
# resolve relative URLs in link, guid, docs, url, comments, wfw:comment,
|
|
# wfw:commentRSS; resolve relative URLs within embedded HTML markup in
|
|
# description, xhtml:body, content, content:encoded, title, subtitle,
|
|
# summary, info, tagline, and copyright; added support for pingback and
|
|
# trackback namespaces
|
|
#2.7 - 1/5/2004 - MAP - really added support for trackback and pingback
|
|
# namespaces, as opposed to 2.6 when I said I did but didn't really;
|
|
# sanitize HTML markup within some elements; added mxTidy support (if
|
|
# installed) to tidy HTML markup within some elements; fixed indentation
|
|
# bug in _parse_date (FazalM); use socket.setdefaulttimeout if available
|
|
# (FazalM); universal date parsing and normalization (FazalM): 'created', modified',
|
|
# 'issued' are parsed into 9-tuple date format and stored in 'created_parsed',
|
|
# 'modified_parsed', and 'issued_parsed'; 'date' is duplicated in 'modified'
|
|
# and vice-versa; 'date_parsed' is duplicated in 'modified_parsed' and vice-versa
|
|
#2.7.1 - 1/9/2004 - MAP - fixed bug handling " and '. fixed memory
|
|
# leak not closing url opener (JohnD); added dc:publisher support (MarekK);
|
|
# added admin:errorReportsTo support (MarekK); Python 2.1 dict support (MarekK)
|
|
#2.7.4 - 1/14/2004 - MAP - added workaround for improperly formed <br/> tags in
|
|
# encoded HTML (skadz); fixed unicode handling in normalize_attrs (ChrisL);
|
|
# fixed relative URI processing for guid (skadz); added ICBM support; added
|
|
# base64 support
|
|
#2.7.5 - 1/15/2004 - MAP - added workaround for malformed DOCTYPE (seen on many
|
|
# blogspot.com sites); added _debug variable
|
|
#2.7.6 - 1/16/2004 - MAP - fixed bug with StringIO importing
|
|
#3.0b3 - 1/23/2004 - MAP - parse entire feed with real XML parser (if available);
|
|
# added several new supported namespaces; fixed bug tracking naked markup in
|
|
# description; added support for enclosure; added support for source; re-added
|
|
# support for cloud which got dropped somehow; added support for expirationDate
|
|
#3.0b4 - 1/26/2004 - MAP - fixed xml:lang inheritance; fixed multiple bugs tracking
|
|
# xml:base URI, one for documents that don't define one explicitly and one for
|
|
# documents that define an outer and an inner xml:base that goes out of scope
|
|
# before the end of the document
|
|
#3.0b5 - 1/26/2004 - MAP - fixed bug parsing multiple links at feed level
|
|
#3.0b6 - 1/27/2004 - MAP - added feed type and version detection, result["version"]
|
|
# will be one of SUPPORTED_VERSIONS.keys() or empty string if unrecognized;
|
|
# added support for creativeCommons:license and cc:license; added support for
|
|
# full Atom content model in title, tagline, info, copyright, summary; fixed bug
|
|
# with gzip encoding (not always telling server we support it when we do)
|
|
#3.0b7 - 1/28/2004 - MAP - support Atom-style author element in author_detail
|
|
# (dictionary of "name", "url", "email"); map author to author_detail if author
|
|
# contains name + email address
|
|
#3.0b8 - 1/28/2004 - MAP - added support for contributor
|
|
#3.0b9 - 1/29/2004 - MAP - fixed check for presence of dict function; added
|
|
# support for summary
|
|
#3.0b10 - 1/31/2004 - MAP - incorporated ISO-8601 date parsing routines from
|
|
# xml.util.iso8601
|
|
#3.0b11 - 2/2/2004 - MAP - added 'rights' to list of elements that can contain
|
|
# dangerous markup; fiddled with decodeEntities (not right); liberalized
|
|
# date parsing even further
|
|
#3.0b12 - 2/6/2004 - MAP - fiddled with decodeEntities (still not right);
|
|
# added support to Atom 0.2 subtitle; added support for Atom content model
|
|
# in copyright; better sanitizing of dangerous HTML elements with end tags
|
|
# (script, frameset)
|
|
#3.0b13 - 2/8/2004 - MAP - better handling of empty HTML tags (br, hr, img,
|
|
# etc.) in embedded markup, in either HTML or XHTML form (<br>, <br/>, <br />)
|
|
#3.0b14 - 2/8/2004 - MAP - fixed CDATA handling in non-wellformed feeds under
|
|
# Python 2.1
|
|
#3.0b15 - 2/11/2004 - MAP - fixed bug resolving relative links in wfw:commentRSS;
|
|
# fixed bug capturing author and contributor URL; fixed bug resolving relative
|
|
# links in author and contributor URL; fixed bug resolvin relative links in
|
|
# generator URL; added support for recognizing RSS 1.0; passed Simon Fell's
|
|
# namespace tests, and included them permanently in the test suite with his
|
|
# permission; fixed namespace handling under Python 2.1
|
|
#3.0b16 - 2/12/2004 - MAP - fixed support for RSS 0.90 (broken in b15)
|
|
#3.0b17 - 2/13/2004 - MAP - determine character encoding as per RFC 3023
|
|
#3.0b18 - 2/17/2004 - MAP - always map description to summary_detail (Andrei);
|
|
# use libxml2 (if available)
|
|
#3.0b19 - 3/15/2004 - MAP - fixed bug exploding author information when author
|
|
# name was in parentheses; removed ultra-problematic mxTidy support; patch to
|
|
# workaround crash in PyXML/expat when encountering invalid entities
|
|
# (MarkMoraes); support for textinput/textInput
|
|
#3.0b20 - 4/7/2004 - MAP - added CDF support
|
|
#3.0b21 - 4/14/2004 - MAP - added Hot RSS support
|
|
#3.0b22 - 4/19/2004 - MAP - changed 'channel' to 'feed', 'item' to 'entries' in
|
|
# results dict; changed results dict to allow getting values with results.key
|
|
# as well as results[key]; work around embedded illformed HTML with half
|
|
# a DOCTYPE; work around malformed Content-Type header; if character encoding
|
|
# is wrong, try several common ones before falling back to regexes (if this
|
|
# works, bozo_exception is set to CharacterEncodingOverride); fixed character
|
|
# encoding issues in BaseHTMLProcessor by tracking encoding and converting
|
|
# from Unicode to raw strings before feeding data to sgmllib.SGMLParser;
|
|
# convert each value in results to Unicode (if possible), even if using
|
|
# regex-based parsing
|
|
#3.0b23 - 4/21/2004 - MAP - fixed UnicodeDecodeError for feeds that contain
|
|
# high-bit characters in attributes in embedded HTML in description (thanks
|
|
# Thijs van de Vossen); moved guid, date, and date_parsed to mapped keys in
|
|
# FeedParserDict; tweaked FeedParserDict.has_key to return True if asking
|
|
# about a mapped key
|
|
#3.0fc1 - 4/23/2004 - MAP - made results.entries[0].links[0] and
|
|
# results.entries[0].enclosures[0] into FeedParserDict; fixed typo that could
|
|
# cause the same encoding to be tried twice (even if it failed the first time);
|
|
# fixed DOCTYPE stripping when DOCTYPE contained entity declarations;
|
|
# better textinput and image tracking in illformed RSS 1.0 feeds
|
|
#3.0fc2 - 5/10/2004 - MAP - added and passed Sam's amp tests; added and passed
|
|
# my blink tag tests
|
|
#3.0fc3 - 6/18/2004 - MAP - fixed bug in _changeEncodingDeclaration that
|
|
# failed to parse utf-16 encoded feeds; made source into a FeedParserDict;
|
|
# duplicate admin:generatorAgent/@rdf:resource in generator_detail.url;
|
|
# added support for image; refactored parse() fallback logic to try other
|
|
# encodings if SAX parsing fails (previously it would only try other encodings
|
|
# if re-encoding failed); remove unichr madness in normalize_attrs now that
|
|
# we're properly tracking encoding in and out of BaseHTMLProcessor; set
|
|
# feed.language from root-level xml:lang; set entry.id from rdf:about;
|
|
# send Accept header
|
|
#3.0 - 6/21/2004 - MAP - don't try iso-8859-1 (can't distinguish between
|
|
# iso-8859-1 and windows-1252 anyway, and most incorrectly marked feeds are
|
|
# windows-1252); fixed regression that could cause the same encoding to be
|
|
# tried twice (even if it failed the first time)
|
|
#3.0.1 - 6/22/2004 - MAP - default to us-ascii for all text/* content types;
|
|
# recover from malformed content-type header parameter with no equals sign
|
|
# ("text/xml; charset:iso-8859-1")
|
|
#3.1 - 6/28/2004 - MAP - added and passed tests for converting HTML entities
|
|
# to Unicode equivalents in illformed feeds (aaronsw); added and
|
|
# passed tests for converting character entities to Unicode equivalents
|
|
# in illformed feeds (aaronsw); test for valid parsers when setting
|
|
# XML_AVAILABLE; make version and encoding available when server returns
|
|
# a 304; add handlers parameter to pass arbitrary urllib2 handlers (like
|
|
# digest auth or proxy support); add code to parse username/password
|
|
# out of url and send as basic authentication; expose downloading-related
|
|
# exceptions in bozo_exception (aaronsw); added __contains__ method to
|
|
# FeedParserDict (aaronsw); added publisher_detail (aaronsw)
|
|
#3.2 - 7/3/2004 - MAP - use cjkcodecs and iconv_codec if available; always
|
|
# convert feed to UTF-8 before passing to XML parser; completely revamped
|
|
# logic for determining character encoding and attempting XML parsing
|
|
# (much faster); increased default timeout to 20 seconds; test for presence
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# of Location header on redirects; added tests for many alternate character
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# encodings; support various EBCDIC encodings; support UTF-16BE and
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# UTF16-LE with or without a BOM; support UTF-8 with a BOM; support
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# UTF-32BE and UTF-32LE with or without a BOM; fixed crashing bug if no
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# XML parsers are available; added support for "Content-encoding: deflate";
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# send blank "Accept-encoding: " header if neither gzip nor zlib modules
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# are available
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#3.3 - 7/15/2004 - MAP - optimize EBCDIC to ASCII conversion; fix obscure
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# problem tracking xml:base and xml:lang if element declares it, child
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# doesn't, first grandchild redeclares it, and second grandchild doesn't;
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# refactored date parsing; defined public registerDateHandler so callers
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# can add support for additional date formats at runtime; added support
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# for OnBlog, Nate, MSSQL, Greek, and Hungarian dates (ytrewq1); added
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# zopeCompatibilityHack() which turns FeedParserDict into a regular
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# dictionary, required for Zope compatibility, and also makes command-
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# line debugging easier because pprint module formats real dictionaries
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# better than dictionary-like objects; added NonXMLContentType exception,
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# which is stored in bozo_exception when a feed is served with a non-XML
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# media type such as "text/plain"; respect Content-Language as default
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# language if not xml:lang is present; cloud dict is now FeedParserDict;
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# generator dict is now FeedParserDict; better tracking of xml:lang,
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# including support for xml:lang="" to unset the current language;
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# recognize RSS 1.0 feeds even when RSS 1.0 namespace is not the default
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# namespace; don't overwrite final status on redirects (scenarios:
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# redirecting to a URL that returns 304, redirecting to a URL that
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# redirects to another URL with a different type of redirect); add
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# support for HTTP 303 redirects
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#3.3.1 - 11/23/2004 - RSlakinski - added support for podcast:enclosure
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# to support the RSS 2.0 module for this element type
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#3.3.2 - 07/13/2005 -RSlakinski - added the namespaces for Yahoo Media |