':
depth = 0
for piece in pieces[:-1]:
if piece.startswith(''):
depth += 1
else:
pieces = pieces[1:-1]
# Ensure each piece is a str for Python 3
for (i, v) in enumerate(pieces):
if not isinstance(v, str):
pieces[i] = v.decode('utf-8')
output = ''.join(pieces)
if stripWhitespace:
output = output.strip()
if not expectingText:
return output
# decode base64 content
if base64 and self.contentparams.get('base64', 0):
try:
output = _base64decode(output)
except binascii.Error:
pass
except binascii.Incomplete:
pass
except TypeError:
# In Python 3, base64 takes and outputs bytes, not str
# This may not be the most correct way to accomplish this
output = _base64decode(output.encode('utf-8')).decode('utf-8')
# resolve relative URIs
if (element in self.can_be_relative_uri) and output:
# do not resolve guid elements with isPermalink="false"
if not element == 'id' or self.guidislink:
output = self.resolveURI(output)
# decode entities within embedded markup
if not self.contentparams.get('base64', 0):
output = self.decodeEntities(element, output)
# some feed formats require consumers to guess
# whether the content is html or plain text
if not self.version.startswith('atom') and self.contentparams.get('type') == 'text/plain':
if self.lookslikehtml(output):
self.contentparams['type'] = 'text/html'
# remove temporary cruft from contentparams
try:
del self.contentparams['mode']
except KeyError:
pass
try:
del self.contentparams['base64']
except KeyError:
pass
is_htmlish = self.mapContentType(self.contentparams.get('type', 'text/html')) in self.html_types
# resolve relative URIs within embedded markup
if is_htmlish and RESOLVE_RELATIVE_URIS:
if element in self.can_contain_relative_uris:
output = _resolveRelativeURIs(output, self.baseuri, self.encoding, self.contentparams.get('type', 'text/html'))
# sanitize embedded markup
if is_htmlish and SANITIZE_HTML:
if element in self.can_contain_dangerous_markup:
output = _sanitizeHTML(output, self.encoding, self.contentparams.get('type', 'text/html'))
if self.encoding and not isinstance(output, str):
output = output.decode(self.encoding, 'ignore')
# address common error where people take data that is already
# utf-8, presume that it is iso-8859-1, and re-encode it.
if self.encoding in ('utf-8', 'utf-8_INVALID_PYTHON_3') and isinstance(output, str):
try:
output = output.encode('iso-8859-1').decode('utf-8')
except (UnicodeEncodeError, UnicodeDecodeError):
pass
# map win-1252 extensions to the proper code points
if isinstance(output, str):
output = output.translate(_cp1252)
# categories/tags/keywords/whatever are handled in _end_category or _end_tags or _end_itunes_keywords
if element in ('category', 'tags', 'itunes_keywords'):
return output
if element == 'title' and -1 < self.title_depth <= self.depth:
return output
# store output in appropriate place(s)
if self.inentry and not self.insource:
if element == 'content':
self.entries[-1].setdefault(element, [])
contentparams = copy.deepcopy(self.contentparams)
contentparams['value'] = output
self.entries[-1][element].append(contentparams)
elif element == 'link':
if not self.inimage:
# query variables in urls in link elements are improperly
# converted from `?a=1&b=2` to `?a=1&b;=2` as if they're
# unhandled character references. fix this special case.
output = output.replace('&', '&')
output = re.sub("&([A-Za-z0-9_]+);", "&\g<1>", output)
self.entries[-1][element] = output
if output:
self.entries[-1]['links'][-1]['href'] = output
else:
if element == 'description':
element = 'summary'
old_value_depth = self.property_depth_map.setdefault(self.entries[-1], {}).get(element)
if old_value_depth is None or self.depth <= old_value_depth:
self.property_depth_map[self.entries[-1]][element] = self.depth
self.entries[-1][element] = output
if self.incontent:
contentparams = copy.deepcopy(self.contentparams)
contentparams['value'] = output
self.entries[-1][element + '_detail'] = contentparams
elif (self.infeed or self.insource):# and (not self.intextinput) and (not self.inimage):
context = self._getContext()
if element == 'description':
element = 'subtitle'
context[element] = output
if element == 'link':
# fix query variables; see above for the explanation
output = re.sub("&([A-Za-z0-9_]+);", "&\g<1>", output)
context[element] = output
context['links'][-1]['href'] = output
elif self.incontent:
contentparams = copy.deepcopy(self.contentparams)
contentparams['value'] = output
context[element + '_detail'] = contentparams
return output
def pushContent(self, tag, attrsD, defaultContentType, expectingText):
self.incontent += 1
if self.lang:
self.lang=self.lang.replace('_','-')
self.contentparams = FeedParserDict({
'type': self.mapContentType(attrsD.get('type', defaultContentType)),
'language': self.lang,
'base': self.baseuri})
self.contentparams['base64'] = self._isBase64(attrsD, self.contentparams)
self.push(tag, expectingText)
def popContent(self, tag):
value = self.pop(tag)
self.incontent -= 1
self.contentparams.clear()
return value
# a number of elements in a number of RSS variants are nominally plain
# text, but this is routinely ignored. This is an attempt to detect
# the most common cases. As false positives often result in silent
# data loss, this function errs on the conservative side.
@staticmethod
def lookslikehtml(s):
# must have a close tag or an entity reference to qualify
if not (re.search(r'',s) or re.search("&#?\w+;",s)):
return
# all tags must be in a restricted subset of valid HTML tags
if [t for t in re.findall(r'', '')
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()
if author or email:
context.setdefault('%s_detail' % key, detail)
if author:
detail['name'] = author
if email:
detail['email'] = email
def _start_subtitle(self, attrsD):
self.pushContent('subtitle', attrsD, 'text/plain', 1)
_start_tagline = _start_subtitle
_start_itunes_subtitle = _start_subtitle
def _end_subtitle(self):
self.popContent('subtitle')
_end_tagline = _end_subtitle
_end_itunes_subtitle = _end_subtitle
def _start_rights(self, attrsD):
self.pushContent('rights', attrsD, 'text/plain', 1)
_start_dc_rights = _start_rights
_start_copyright = _start_rights
def _end_rights(self):
self.popContent('rights')
_end_dc_rights = _end_rights
_end_copyright = _end_rights
def _start_item(self, attrsD):
self.entries.append(FeedParserDict())
self.push('item', 0)
self.inentry = 1
self.guidislink = 0
self.title_depth = -1
self.psc_chapters_flag = None
id = self._getAttribute(attrsD, 'rdf:about')
if id:
context = self._getContext()
context['id'] = id
self._cdf_common(attrsD)
_start_entry = _start_item
def _end_item(self):
self.pop('item')
self.inentry = 0
_end_entry = _end_item
def _start_dc_language(self, attrsD):
self.push('language', 1)
_start_language = _start_dc_language
def _end_dc_language(self):
self.lang = self.pop('language')
_end_language = _end_dc_language
def _start_dc_publisher(self, attrsD):
self.push('publisher', 1)
_start_webmaster = _start_dc_publisher
def _end_dc_publisher(self):
self.pop('publisher')
self._sync_author_detail('publisher')
_end_webmaster = _end_dc_publisher
def _start_dcterms_valid(self, attrsD):
self.push('validity', 1)
def _end_dcterms_valid(self):
for validity_detail in self.pop('validity').split(';'):
if '=' in validity_detail:
key, value = validity_detail.split('=', 1)
if key == 'start':
self._save('validity_start', value, overwrite=True)
self._save('validity_start_parsed', _parse_date(value), overwrite=True)
elif key == 'end':
self._save('validity_end', value, overwrite=True)
self._save('validity_end_parsed', _parse_date(value), overwrite=True)
def _start_published(self, attrsD):
self.push('published', 1)
_start_dcterms_issued = _start_published
_start_issued = _start_published
_start_pubdate = _start_published
def _end_published(self):
value = self.pop('published')
self._save('published_parsed', _parse_date(value), overwrite=True)
_end_dcterms_issued = _end_published
_end_issued = _end_published
_end_pubdate = _end_published
def _start_updated(self, attrsD):
self.push('updated', 1)
_start_modified = _start_updated
_start_dcterms_modified = _start_updated
_start_dc_date = _start_updated
_start_lastbuilddate = _start_updated
def _end_updated(self):
value = self.pop('updated')
parsed_value = _parse_date(value)
self._save('updated_parsed', parsed_value, overwrite=True)
_end_modified = _end_updated
_end_dcterms_modified = _end_updated
_end_dc_date = _end_updated
_end_lastbuilddate = _end_updated
def _start_created(self, attrsD):
self.push('created', 1)
_start_dcterms_created = _start_created
def _end_created(self):
value = self.pop('created')
self._save('created_parsed', _parse_date(value), overwrite=True)
_end_dcterms_created = _end_created
def _start_expirationdate(self, attrsD):
self.push('expired', 1)
def _end_expirationdate(self):
self._save('expired_parsed', _parse_date(self.pop('expired')), overwrite=True)
# geospatial location, or "where", from georss.org
def _start_georssgeom(self, attrsD):
self.push('geometry', 0)
context = self._getContext()
context['where'] = FeedParserDict()
_start_georss_point = _start_georssgeom
_start_georss_line = _start_georssgeom
_start_georss_polygon = _start_georssgeom
_start_georss_box = _start_georssgeom
def _save_where(self, geometry):
context = self._getContext()
context['where'].update(geometry)
def _end_georss_point(self):
geometry = _parse_georss_point(self.pop('geometry'))
if geometry:
self._save_where(geometry)
def _end_georss_line(self):
geometry = _parse_georss_line(self.pop('geometry'))
if geometry:
self._save_where(geometry)
def _end_georss_polygon(self):
this = self.pop('geometry')
geometry = _parse_georss_polygon(this)
if geometry:
self._save_where(geometry)
def _end_georss_box(self):
geometry = _parse_georss_box(self.pop('geometry'))
if geometry:
self._save_where(geometry)
def _start_where(self, attrsD):
self.push('where', 0)
context = self._getContext()
context['where'] = FeedParserDict()
_start_georss_where = _start_where
def _parse_srs_attrs(self, attrsD):
srsName = attrsD.get('srsname')
try:
srsDimension = int(attrsD.get('srsdimension', '2'))
except ValueError:
srsDimension = 2
context = self._getContext()
context['where']['srsName'] = srsName
context['where']['srsDimension'] = srsDimension
def _start_gml_point(self, attrsD):
self._parse_srs_attrs(attrsD)
self.ingeometry = 1
self.push('geometry', 0)
def _start_gml_linestring(self, attrsD):
self._parse_srs_attrs(attrsD)
self.ingeometry = 'linestring'
self.push('geometry', 0)
def _start_gml_polygon(self, attrsD):
self._parse_srs_attrs(attrsD)
self.push('geometry', 0)
def _start_gml_exterior(self, attrsD):
self.push('geometry', 0)
def _start_gml_linearring(self, attrsD):
self.ingeometry = 'polygon'
self.push('geometry', 0)
def _start_gml_pos(self, attrsD):
self.push('pos', 0)
def _end_gml_pos(self):
this = self.pop('pos')
context = self._getContext()
srsName = context['where'].get('srsName')
srsDimension = context['where'].get('srsDimension', 2)
swap = True
if srsName and "EPSG" in srsName:
epsg = int(srsName.split(":")[-1])
swap = bool(epsg in _geogCS)
geometry = _parse_georss_point(this, swap=swap, dims=srsDimension)
if geometry:
self._save_where(geometry)
def _start_gml_poslist(self, attrsD):
self.push('pos', 0)
def _end_gml_poslist(self):
this = self.pop('pos')
context = self._getContext()
srsName = context['where'].get('srsName')
srsDimension = context['where'].get('srsDimension', 2)
swap = True
if srsName and "EPSG" in srsName:
epsg = int(srsName.split(":")[-1])
swap = bool(epsg in _geogCS)
geometry = _parse_poslist(
this, self.ingeometry, swap=swap, dims=srsDimension)
if geometry:
self._save_where(geometry)
def _end_geom(self):
self.ingeometry = 0
self.pop('geometry')
_end_gml_point = _end_geom
_end_gml_linestring = _end_geom
_end_gml_linearring = _end_geom
_end_gml_exterior = _end_geom
_end_gml_polygon = _end_geom
def _end_where(self):
self.pop('where')
_end_georss_where = _end_where
# end geospatial
def _start_cc_license(self, attrsD):
context = self._getContext()
value = self._getAttribute(attrsD, 'rdf:resource')
attrsD = FeedParserDict()
attrsD['rel'] = 'license'
if value:
attrsD['href']=value
context.setdefault('links', []).append(attrsD)
def _start_creativecommons_license(self, attrsD):
self.push('license', 1)
_start_creativeCommons_license = _start_creativecommons_license
def _end_creativecommons_license(self):
value = self.pop('license')
context = self._getContext()
attrsD = FeedParserDict()
attrsD['rel'] = 'license'
if value:
attrsD['href'] = value
context.setdefault('links', []).append(attrsD)
del context['license']
_end_creativeCommons_license = _end_creativecommons_license
def _addTag(self, term, scheme, label):
context = self._getContext()
tags = context.setdefault('tags', [])
if (not term) and (not scheme) and (not label):
return
value = FeedParserDict(term=term, scheme=scheme, label=label)
if value not in tags:
tags.append(value)
def _start_tags(self, attrsD):
# This is a completely-made up element. Its semantics are determined
# only by a single feed that precipitated bug report 392 on Google Code.
# In short, this is junk code.
self.push('tags', 1)
def _end_tags(self):
for term in self.pop('tags').split(','):
self._addTag(term.strip(), None, None)
def _start_category(self, attrsD):
term = attrsD.get('term')
scheme = attrsD.get('scheme', attrsD.get('domain'))
label = attrsD.get('label')
self._addTag(term, scheme, label)
self.push('category', 1)
_start_dc_subject = _start_category
_start_keywords = _start_category
def _start_media_category(self, attrsD):
attrsD.setdefault('scheme', 'http://search.yahoo.com/mrss/category_schema')
self._start_category(attrsD)
def _end_itunes_keywords(self):
for term in self.pop('itunes_keywords').split(','):
if term.strip():
self._addTag(term.strip(), 'http://www.itunes.com/', None)
def _end_media_keywords(self):
for term in self.pop('media_keywords').split(','):
if term.strip():
self._addTag(term.strip(), None, None)
def _start_itunes_category(self, attrsD):
self._addTag(attrsD.get('text'), 'http://www.itunes.com/', None)
self.push('category', 1)
def _end_category(self):
value = self.pop('category')
if not value:
return
context = self._getContext()
tags = context['tags']
if value and len(tags) and not tags[-1]['term']:
tags[-1]['term'] = value
else:
self._addTag(value, None, None)
_end_dc_subject = _end_category
_end_keywords = _end_category
_end_itunes_category = _end_category
_end_media_category = _end_category
def _start_cloud(self, attrsD):
self._getContext()['cloud'] = FeedParserDict(attrsD)
def _start_link(self, attrsD):
attrsD.setdefault('rel', 'alternate')
if attrsD['rel'] == 'self':
attrsD.setdefault('type', 'application/atom+xml')
else:
attrsD.setdefault('type', 'text/html')
context = self._getContext()
attrsD = self._itsAnHrefDamnIt(attrsD)
if 'href' in attrsD:
attrsD['href'] = self.resolveURI(attrsD['href'])
expectingText = self.infeed or self.inentry or self.insource
context.setdefault('links', [])
if not (self.inentry and self.inimage):
context['links'].append(FeedParserDict(attrsD))
if 'href' in attrsD:
expectingText = 0
if (attrsD.get('rel') == 'alternate') and (self.mapContentType(attrsD.get('type')) in self.html_types):
context['link'] = attrsD['href']
else:
self.push('link', expectingText)
def _end_link(self):
value = self.pop('link')
def _start_guid(self, attrsD):
self.guidislink = (attrsD.get('ispermalink', 'true') == 'true')
self.push('id', 1)
_start_id = _start_guid
def _end_guid(self):
value = self.pop('id')
self._save('guidislink', self.guidislink and 'link' not in self._getContext())
if self.guidislink:
# guid acts as link, but only if 'ispermalink' is not present or is 'true',
# and only if the item doesn't already have a link element
self._save('link', value)
_end_id = _end_guid
def _start_title(self, attrsD):
if self.svgOK:
return self.unknown_starttag('title', list(attrsD.items()))
self.pushContent('title', attrsD, 'text/plain', self.infeed or self.inentry or self.insource)
_start_dc_title = _start_title
_start_media_title = _start_title
def _end_title(self):
if self.svgOK:
return
value = self.popContent('title')
if not value:
return
self.title_depth = self.depth
_end_dc_title = _end_title
def _end_media_title(self):
title_depth = self.title_depth
self._end_title()
self.title_depth = title_depth
def _start_description(self, attrsD):
context = self._getContext()
if 'summary' in context:
self._summaryKey = 'content'
self._start_content(attrsD)
else:
self.pushContent('description', attrsD, 'text/html', self.infeed or self.inentry or self.insource)
_start_dc_description = _start_description
_start_media_description = _start_description
def _start_abstract(self, attrsD):
self.pushContent('description', attrsD, 'text/plain', self.infeed or self.inentry or self.insource)
def _end_description(self):
if self._summaryKey == 'content':
self._end_content()
else:
value = self.popContent('description')
self._summaryKey = None
_end_abstract = _end_description
_end_dc_description = _end_description
_end_media_description = _end_description
def _start_info(self, attrsD):
self.pushContent('info', attrsD, 'text/plain', 1)
_start_feedburner_browserfriendly = _start_info
def _end_info(self):
self.popContent('info')
_end_feedburner_browserfriendly = _end_info
def _start_generator(self, attrsD):
if attrsD:
attrsD = self._itsAnHrefDamnIt(attrsD)
if 'href' in attrsD:
attrsD['href'] = self.resolveURI(attrsD['href'])
self._getContext()['generator_detail'] = FeedParserDict(attrsD)
self.push('generator', 1)
def _end_generator(self):
value = self.pop('generator')
context = self._getContext()
if 'generator_detail' in context:
context['generator_detail']['name'] = value
def _start_admin_generatoragent(self, attrsD):
self.push('generator', 1)
value = self._getAttribute(attrsD, 'rdf:resource')
if value:
self.elementstack[-1][2].append(value)
self.pop('generator')
self._getContext()['generator_detail'] = FeedParserDict({'href': value})
def _start_admin_errorreportsto(self, attrsD):
self.push('errorreportsto', 1)
value = self._getAttribute(attrsD, 'rdf:resource')
if value:
self.elementstack[-1][2].append(value)
self.pop('errorreportsto')
def _start_summary(self, attrsD):
context = self._getContext()
if 'summary' in context:
self._summaryKey = 'content'
self._start_content(attrsD)
else:
self._summaryKey = 'summary'
self.pushContent(self._summaryKey, attrsD, 'text/plain', 1)
_start_itunes_summary = _start_summary
def _end_summary(self):
if self._summaryKey == 'content':
self._end_content()
else:
self.popContent(self._summaryKey or 'summary')
self._summaryKey = None
_end_itunes_summary = _end_summary
def _start_enclosure(self, attrsD):
attrsD = self._itsAnHrefDamnIt(attrsD)
context = self._getContext()
attrsD['rel'] = 'enclosure'
context.setdefault('links', []).append(FeedParserDict(attrsD))
def _start_source(self, attrsD):
if 'url' in attrsD:
# This means that we're processing a source element from an RSS 2.0 feed
self.sourcedata['href'] = attrsD['url']
self.push('source', 1)
self.insource = 1
self.title_depth = -1
def _end_source(self):
self.insource = 0
value = self.pop('source')
if value:
self.sourcedata['title'] = value
self._getContext()['source'] = copy.deepcopy(self.sourcedata)
self.sourcedata.clear()
def _start_content(self, attrsD):
self.pushContent('content', attrsD, 'text/plain', 1)
src = attrsD.get('src')
if src:
self.contentparams['src'] = src
self.push('content', 1)
def _start_body(self, attrsD):
self.pushContent('content', attrsD, 'application/xhtml+xml', 1)
_start_xhtml_body = _start_body
def _start_content_encoded(self, attrsD):
self.pushContent('content', attrsD, 'text/html', 1)
_start_fullitem = _start_content_encoded
def _end_content(self):
copyToSummary = self.mapContentType(self.contentparams.get('type')) in (['text/plain'] + self.html_types)
value = self.popContent('content')
if copyToSummary:
self._save('summary', value)
_end_body = _end_content
_end_xhtml_body = _end_content
_end_content_encoded = _end_content
_end_fullitem = _end_content
def _start_itunes_image(self, attrsD):
self.push('itunes_image', 0)
if attrsD.get('href'):
self._getContext()['image'] = FeedParserDict({'href': attrsD.get('href')})
elif attrsD.get('url'):
self._getContext()['image'] = FeedParserDict({'href': attrsD.get('url')})
_start_itunes_link = _start_itunes_image
def _end_itunes_block(self):
value = self.pop('itunes_block', 0)
self._getContext()['itunes_block'] = (value == 'yes') and 1 or 0
def _end_itunes_explicit(self):
value = self.pop('itunes_explicit', 0)
# Convert 'yes' -> True, 'clean' to False, and any other value to None
# False and None both evaluate as False, so the difference can be ignored
# by applications that only need to know if the content is explicit.
self._getContext()['itunes_explicit'] = (None, False, True)[(value == 'yes' and 2) or value == 'clean' or 0]
def _start_media_group(self, attrsD):
# don't do anything, but don't break the enclosed tags either
pass
def _start_media_rating(self, attrsD):
context = self._getContext()
context.setdefault('media_rating', attrsD)
self.push('rating', 1)
def _end_media_rating(self):
rating = self.pop('rating')
if rating is not None and rating.strip():
context = self._getContext()
context['media_rating']['content'] = rating
def _start_media_credit(self, attrsD):
context = self._getContext()
context.setdefault('media_credit', [])
context['media_credit'].append(attrsD)
self.push('credit', 1)
def _end_media_credit(self):
credit = self.pop('credit')
if credit != None and len(credit.strip()) != 0:
context = self._getContext()
context['media_credit'][-1]['content'] = credit
def _start_media_restriction(self, attrsD):
context = self._getContext()
context.setdefault('media_restriction', attrsD)
self.push('restriction', 1)
def _end_media_restriction(self):
restriction = self.pop('restriction')
if restriction != None and len(restriction.strip()) != 0:
context = self._getContext()
context['media_restriction']['content'] = [cc.strip().lower() for cc in restriction.split(' ')]
def _start_media_license(self, attrsD):
context = self._getContext()
context.setdefault('media_license', attrsD)
self.push('license', 1)
def _end_media_license(self):
license = self.pop('license')
if license != None and len(license.strip()) != 0:
context = self._getContext()
context['media_license']['content'] = license
def _start_media_content(self, attrsD):
context = self._getContext()
context.setdefault('media_content', [])
context['media_content'].append(attrsD)
def _start_media_thumbnail(self, attrsD):
context = self._getContext()
context.setdefault('media_thumbnail', [])
self.push('url', 1) # new
context['media_thumbnail'].append(attrsD)
def _end_media_thumbnail(self):
url = self.pop('url')
context = self._getContext()
if url != None and len(url.strip()) != 0:
if 'url' not in context['media_thumbnail'][-1]:
context['media_thumbnail'][-1]['url'] = url
def _start_media_player(self, attrsD):
self.push('media_player', 0)
self._getContext()['media_player'] = FeedParserDict(attrsD)
def _end_media_player(self):
value = self.pop('media_player')
context = self._getContext()
context['media_player']['content'] = value
def _start_newlocation(self, attrsD):
self.push('newlocation', 1)
def _end_newlocation(self):
url = self.pop('newlocation')
context = self._getContext()
# don't set newlocation if the context isn't right
if context is not self.feeddata:
return
context['newlocation'] = _makeSafeAbsoluteURI(self.baseuri, url.strip())
def _start_psc_chapters(self, attrsD):
if self.psc_chapters_flag is None:
# Transition from None -> True
self.psc_chapters_flag = True
attrsD['chapters'] = []
self._getContext()['psc_chapters'] = FeedParserDict(attrsD)
def _end_psc_chapters(self):
# Transition from True -> False
self.psc_chapters_flag = False
def _start_psc_chapter(self, attrsD):
if self.psc_chapters_flag:
start = self._getAttribute(attrsD, 'start')
attrsD['start_parsed'] = _parse_psc_chapter_start(start)
context = self._getContext()['psc_chapters']
context['chapters'].append(FeedParserDict(attrsD))
if _XML_AVAILABLE:
class _StrictFeedParser(_FeedParserMixin, xml.sax.handler.ContentHandler):
def __init__(self, baseuri, baselang, encoding):
xml.sax.handler.ContentHandler.__init__(self)
_FeedParserMixin.__init__(self, baseuri, baselang, encoding)
self.bozo = 0
self.exc = None
self.decls = {}
def startPrefixMapping(self, prefix, uri):
if not uri:
return
# Jython uses '' instead of None; standardize on None
prefix = prefix or None
self.trackNamespace(prefix, uri)
if prefix and uri == 'http://www.w3.org/1999/xlink':
self.decls['xmlns:' + prefix] = uri
def startElementNS(self, name, qname, attrs):
namespace, localname = name
lowernamespace = str(namespace or '').lower()
if lowernamespace.find('backend.userland.com/rss') != -1:
# match any backend.userland.com namespace
namespace = 'http://backend.userland.com/rss'
lowernamespace = namespace
if qname and qname.find(':') > 0:
givenprefix = qname.split(':')[0]
else:
givenprefix = None
prefix = self._matchnamespaces.get(lowernamespace, givenprefix)
if givenprefix and (prefix == None or (prefix == '' and lowernamespace == '')) and givenprefix not in self.namespacesInUse:
raise UndeclaredNamespace("'%s' is not associated with a namespace" % givenprefix)
localname = str(localname).lower()
# qname implementation is horribly broken in Python 2.1 (it
# doesn't report any), and slightly broken in Python 2.2 (it
# doesn't report the xml: namespace). So we match up namespaces
# with a known list first, and then possibly override them with
# the qnames the SAX parser gives us (if indeed it gives us any
# at all). Thanks to MatejC for helping me test this and
# tirelessly telling me that it didn't work yet.
attrsD, self.decls = self.decls, {}
if localname=='math' and namespace=='http://www.w3.org/1998/Math/MathML':
attrsD['xmlns']=namespace
if localname=='svg' and namespace=='http://www.w3.org/2000/svg':
attrsD['xmlns']=namespace
if prefix:
localname = prefix.lower() + ':' + localname
elif namespace and not qname: #Expat
for name,value in list(self.namespacesInUse.items()):
if name and value == namespace:
localname = name + ':' + localname
break
for (namespace, attrlocalname), attrvalue in list(attrs.items()):
lowernamespace = (namespace or '').lower()
prefix = self._matchnamespaces.get(lowernamespace, '')
if prefix:
attrlocalname = prefix + ':' + attrlocalname
attrsD[str(attrlocalname).lower()] = attrvalue
for qname in attrs.getQNames():
attrsD[str(qname).lower()] = attrs.getValueByQName(qname)
localname = str(localname).lower()
self.unknown_starttag(localname, list(attrsD.items()))
def characters(self, text):
self.handle_data(text)
def endElementNS(self, name, qname):
namespace, localname = name
lowernamespace = str(namespace or '').lower()
if qname and qname.find(':') > 0:
givenprefix = qname.split(':')[0]
else:
givenprefix = ''
prefix = self._matchnamespaces.get(lowernamespace, givenprefix)
if prefix:
localname = prefix + ':' + localname
elif namespace and not qname: #Expat
for name,value in list(self.namespacesInUse.items()):
if name and value == namespace:
localname = name + ':' + localname
break
localname = str(localname).lower()
self.unknown_endtag(localname)
def error(self, exc):
self.bozo = 1
self.exc = exc
# drv_libxml2 calls warning() in some cases
warning = error
def fatalError(self, exc):
self.error(exc)
raise exc
class _BaseHTMLProcessor(sgmllib.SGMLParser):
special = re.compile('''[<>'"]''')
bare_ampersand = re.compile("&(?!#\d+;|#x[0-9a-fA-F]+;|\w+;)")
elements_no_end_tag = set([
'area', 'base', 'basefont', 'br', 'col', 'command', 'embed', 'frame',
'hr', 'img', 'input', 'isindex', 'keygen', 'link', 'meta', 'param',
'source', 'track', 'wbr'
])
def __init__(self, encoding, _type):
self.encoding = encoding
self._type = _type
sgmllib.SGMLParser.__init__(self)
def reset(self):
self.pieces = []
sgmllib.SGMLParser.reset(self)
def _shorttag_replace(self, match):
tag = match.group(1)
if tag in self.elements_no_end_tag:
return '<' + tag + ' />'
else:
return '<' + tag + '>'
# By declaring these methods and overriding their compiled code
# with the code from sgmllib, the original code will execute in
# feedparser's scope instead of sgmllib's. This means that the
# `tagfind` and `charref` regular expressions will be found as
# they're declared above, not as they're declared in sgmllib.
def goahead(self, i):
pass
goahead.__code__ = sgmllib.SGMLParser.goahead.__code__
def __parse_starttag(self, i):
pass
__parse_starttag.__code__ = sgmllib.SGMLParser.parse_starttag.__code__
def parse_starttag(self,i):
j = self.__parse_starttag(i)
if self._type == 'application/xhtml+xml':
if j>2 and self.rawdata[j-2:j]=='/>':
self.unknown_endtag(self.lasttag)
return j
def feed(self, data):
data = re.compile(r'\s]+?)\s*/>', self._shorttag_replace, data)
data = data.replace(''', "'")
data = data.replace('"', '"')
try:
bytes
if bytes is str:
raise NameError
self.encoding = self.encoding + '_INVALID_PYTHON_3'
except NameError:
if self.encoding and isinstance(data, str):
data = data.encode(self.encoding)
sgmllib.SGMLParser.feed(self, data)
sgmllib.SGMLParser.close(self)
def normalize_attrs(self, attrs):
if not attrs:
return attrs
# utility method to be called by descendants
attrs = list(dict([(k.lower(), v) for k, v in attrs]).items())
attrs = [(k, k in ('rel', 'type') and v.lower() or v) for k, v in attrs]
attrs.sort()
return attrs
def unknown_starttag(self, tag, attrs):
# called for each start tag
# attrs is a list of (attr, value) tuples
# e.g. for
, tag='pre', attrs=[('class', 'screen')]
uattrs = []
strattrs=''
if attrs:
for key, value in attrs:
value=value.replace('>','>').replace('<','<').replace('"','"')
value = self.bare_ampersand.sub("&", value)
# thanks to Kevin Marks for this breathtaking hack to deal with (valid) high-bit attribute values in UTF-8 feeds
if not isinstance(value, str):
value = value.decode(self.encoding, 'ignore')
try:
# Currently, in Python 3 the key is already a str, and cannot be decoded again
uattrs.append((str(key, self.encoding), value))
except TypeError:
uattrs.append((key, value))
strattrs = ''.join([' %s="%s"' % (key, value) for key, value in uattrs])
if self.encoding:
try:
strattrs = strattrs.encode(self.encoding)
except (UnicodeEncodeError, LookupError):
pass
if tag in self.elements_no_end_tag:
self.pieces.append('<%s%s />' % (tag, strattrs))
else:
self.pieces.append('<%s%s>' % (tag, strattrs))
def unknown_endtag(self, tag):
# called for each end tag, e.g. for , tag will be 'pre'
# Reconstruct the original end tag.
if tag not in self.elements_no_end_tag:
self.pieces.append("" % tag)
def handle_charref(self, ref):
# called for each character reference, e.g. for ' ', ref will be '160'
# Reconstruct the original character reference.
ref = ref.lower()
if ref.startswith('x'):
value = int(ref[1:], 16)
else:
value = int(ref)
if value in _cp1252:
self.pieces.append('&#%s;' % hex(ord(_cp1252[value]))[1:])
else:
self.pieces.append('&#%s;' % ref)
def handle_entityref(self, ref):
# called for each entity reference, e.g. for '©', ref will be 'copy'
# Reconstruct the original entity reference.
if ref in name2codepoint or ref == 'apos':
self.pieces.append('&%s;' % ref)
else:
self.pieces.append('&%s' % ref)
def handle_data(self, text):
# called for each block of plain text, i.e. outside of any tag and
# not containing any character or entity references
# Store the original text verbatim.
self.pieces.append(text)
def handle_comment(self, text):
# called for each HTML comment, e.g.
# Reconstruct the original comment.
self.pieces.append('' % text)
def handle_pi(self, text):
# called for each processing instruction, e.g.
# Reconstruct original processing instruction.
self.pieces.append('' % text)
def handle_decl(self, text):
# called for the DOCTYPE, if present, e.g.
#
# Reconstruct original DOCTYPE
self.pieces.append('' % text)
_new_declname_match = re.compile(r'[a-zA-Z][-_.a-zA-Z0-9:]*\s*').match
def _scan_name(self, i, declstartpos):
rawdata = self.rawdata
n = len(rawdata)
if i == n:
return None, -1
m = self._new_declname_match(rawdata, i)
if m:
s = m.group()
name = s.strip()
if (i + len(s)) == n:
return None, -1 # end of buffer
return name.lower(), m.end()
else:
self.handle_data(rawdata)
# self.updatepos(declstartpos, i)
return None, -1
def convert_charref(self, name):
return '&#%s;' % name
def convert_entityref(self, name):
return '&%s;' % name
def output(self):
'''Return processed HTML as a single string'''
return ''.join([str(p) for p in self.pieces])
def parse_declaration(self, i):
try:
return sgmllib.SGMLParser.parse_declaration(self, i)
except sgmllib.SGMLParseError:
# escape the doctype declaration and continue parsing
self.handle_data('<')
return i+1
class _LooseFeedParser(_FeedParserMixin, _BaseHTMLProcessor):
def __init__(self, baseuri, baselang, encoding, entities):
sgmllib.SGMLParser.__init__(self)
_FeedParserMixin.__init__(self, baseuri, baselang, encoding)
_BaseHTMLProcessor.__init__(self, encoding, 'application/xhtml+xml')
self.entities=entities
def decodeEntities(self, element, data):
data = data.replace('<', '<')
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(''', ''')
data = data.replace(''', ''')
if not self.contentparams.get('type', 'xml').endswith('xml'):
data = data.replace('<', '<')
data = data.replace('>', '>')
data = data.replace('&', '&')
data = data.replace('"', '"')
data = data.replace(''', "'")
data = data.replace('/', '/')
data = data.replace('/', '/')
return data
def strattrs(self, attrs):
return ''.join([' %s="%s"' % (n,v.replace('"','"')) for n,v in attrs])
class _RelativeURIResolver(_BaseHTMLProcessor):
relative_uris = set([('a', 'href'),
('applet', 'codebase'),
('area', 'href'),
('audio', 'src'),
('blockquote', 'cite'),
('body', 'background'),
('del', 'cite'),
('form', 'action'),
('frame', 'longdesc'),
('frame', 'src'),
('iframe', 'longdesc'),
('iframe', 'src'),
('head', 'profile'),
('img', 'longdesc'),
('img', 'src'),
('img', 'usemap'),
('input', 'src'),
('input', 'usemap'),
('ins', 'cite'),
('link', 'href'),
('object', 'classid'),
('object', 'codebase'),
('object', 'data'),
('object', 'usemap'),
('q', 'cite'),
('script', 'src'),
('source', 'src'),
('video', 'poster'),
('video', 'src')])
def __init__(self, baseuri, encoding, _type):
_BaseHTMLProcessor.__init__(self, encoding, _type)
self.baseuri = baseuri
def resolveURI(self, uri):
return _makeSafeAbsoluteURI(self.baseuri, uri.strip())
def unknown_starttag(self, tag, attrs):
attrs = self.normalize_attrs(attrs)
attrs = [(key, ((tag, key) in self.relative_uris) and self.resolveURI(value) or value) for key, value in attrs]
_BaseHTMLProcessor.unknown_starttag(self, tag, attrs)
def _resolveRelativeURIs(htmlSource, baseURI, encoding, _type):
if not _SGML_AVAILABLE:
return htmlSource
p = _RelativeURIResolver(baseURI, encoding, _type)
p.feed(htmlSource)
return p.output()
def _makeSafeAbsoluteURI(base, rel=None):
# bail if ACCEPTABLE_URI_SCHEMES is empty
if not ACCEPTABLE_URI_SCHEMES:
return _urljoin(base, rel or '')
if not base:
return rel or ''
if not rel:
try:
scheme = urllib.parse.urlparse(base)[0]
except ValueError:
return ''
if not scheme or scheme in ACCEPTABLE_URI_SCHEMES:
return base
return ''
uri = _urljoin(base, rel)
if uri.strip().split(':', 1)[0] not in ACCEPTABLE_URI_SCHEMES:
return ''
return uri
class _HTMLSanitizer(_BaseHTMLProcessor):
acceptable_elements = set(['a', 'abbr', 'acronym', 'address', 'area',
'article', 'aside', 'audio', 'b', 'big', 'blockquote', 'br', 'button',
'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup',
'command', 'datagrid', 'datalist', 'dd', 'del', 'details', 'dfn',
'dialog', 'dir', 'div', 'dl', 'dt', 'em', 'event-source', 'fieldset',
'figcaption', 'figure', 'footer', 'font', 'form', 'header', 'h1',
'h2', 'h3', 'h4', 'h5', 'h6', 'hr', 'i', 'img', 'input', 'ins',
'keygen', 'kbd', 'label', 'legend', 'li', 'm', 'map', 'menu', 'meter',
'multicol', 'nav', 'nextid', 'ol', 'output', 'optgroup', 'option',
'p', 'pre', 'progress', 'q', 's', 'samp', 'section', 'select',
'small', 'sound', 'source', 'spacer', 'span', 'strike', 'strong',
'sub', 'sup', 'table', 'tbody', 'td', 'textarea', 'time', 'tfoot',
'th', 'thead', 'tr', 'tt', 'u', 'ul', 'var', 'video', 'noscript'])
acceptable_attributes = set(['abbr', 'accept', 'accept-charset', 'accesskey',
'action', 'align', 'alt', 'autocomplete', 'autofocus', 'axis',
'background', 'balance', 'bgcolor', 'bgproperties', 'border',
'bordercolor', 'bordercolordark', 'bordercolorlight', 'bottompadding',
'cellpadding', 'cellspacing', 'ch', 'challenge', 'char', 'charoff',
'choff', 'charset', 'checked', 'cite', 'class', 'clear', 'color', 'cols',
'colspan', 'compact', 'contenteditable', 'controls', 'coords', 'data',
'datafld', 'datapagesize', 'datasrc', 'datetime', 'default', 'delay',
'dir', 'disabled', 'draggable', 'dynsrc', 'enctype', 'end', 'face', 'for',
'form', 'frame', 'galleryimg', 'gutter', 'headers', 'height', 'hidefocus',
'hidden', 'high', 'href', 'hreflang', 'hspace', 'icon', 'id', 'inputmode',
'ismap', 'keytype', 'label', 'leftspacing', 'lang', 'list', 'longdesc',
'loop', 'loopcount', 'loopend', 'loopstart', 'low', 'lowsrc', 'max',
'maxlength', 'media', 'method', 'min', 'multiple', 'name', 'nohref',
'noshade', 'nowrap', 'open', 'optimum', 'pattern', 'ping', 'point-size',
'poster', 'pqg', 'preload', 'prompt', 'radiogroup', 'readonly', 'rel',
'repeat-max', 'repeat-min', 'replace', 'required', 'rev', 'rightspacing',
'rows', 'rowspan', 'rules', 'scope', 'selected', 'shape', 'size', 'span',
'src', 'start', 'step', 'summary', 'suppress', 'tabindex', 'target',
'template', 'title', 'toppadding', 'type', 'unselectable', 'usemap',
'urn', 'valign', 'value', 'variable', 'volume', 'vspace', 'vrml',
'width', 'wrap', 'xml:lang'])
unacceptable_elements_with_end_tag = set(['script', 'applet', 'style'])
acceptable_css_properties = set(['azimuth', 'background-color',
'border-bottom-color', 'border-collapse', 'border-color',
'border-left-color', 'border-right-color', 'border-top-color', 'clear',
'color', 'cursor', 'direction', 'display', 'elevation', 'float', 'font',
'font-family', 'font-size', 'font-style', 'font-variant', 'font-weight',
'height', 'letter-spacing', 'line-height', 'overflow', 'pause',
'pause-after', 'pause-before', 'pitch', 'pitch-range', 'richness',
'speak', 'speak-header', 'speak-numeral', 'speak-punctuation',
'speech-rate', 'stress', 'text-align', 'text-decoration', 'text-indent',
'unicode-bidi', 'vertical-align', 'voice-family', 'volume',
'white-space', 'width'])
# survey of common keywords found in feeds
acceptable_css_keywords = set(['auto', 'aqua', 'black', 'block', 'blue',
'bold', 'both', 'bottom', 'brown', 'center', 'collapse', 'dashed',
'dotted', 'fuchsia', 'gray', 'green', '!important', 'italic', 'left',
'lime', 'maroon', 'medium', 'none', 'navy', 'normal', 'nowrap', 'olive',
'pointer', 'purple', 'red', 'right', 'solid', 'silver', 'teal', 'top',
'transparent', 'underline', 'white', 'yellow'])
valid_css_values = re.compile('^(#[0-9a-f]+|rgb\(\d+%?,\d*%?,?\d*%?\)?|' +
'\d{0,2}\.?\d{0,2}(cm|em|ex|in|mm|pc|pt|px|%|,|\))?)$')
mathml_elements = set([
'annotation',
'annotation-xml',
'maction',
'maligngroup',
'malignmark',
'math',
'menclose',
'merror',
'mfenced',
'mfrac',
'mglyph',
'mi',
'mlabeledtr',
'mlongdiv',
'mmultiscripts',
'mn',
'mo',
'mover',
'mpadded',
'mphantom',
'mprescripts',
'mroot',
'mrow',
'ms',
'mscarries',
'mscarry',
'msgroup',
'msline',
'mspace',
'msqrt',
'msrow',
'mstack',
'mstyle',
'msub',
'msubsup',
'msup',
'mtable',
'mtd',
'mtext',
'mtr',
'munder',
'munderover',
'none',
'semantics',
])
mathml_attributes = set([
'accent',
'accentunder',
'actiontype',
'align',
'alignmentscope',
'altimg',
'altimg-height',
'altimg-valign',
'altimg-width',
'alttext',
'bevelled',
'charalign',
'close',
'columnalign',
'columnlines',
'columnspacing',
'columnspan',
'columnwidth',
'crossout',
'decimalpoint',
'denomalign',
'depth',
'dir',
'display',
'displaystyle',
'edge',
'encoding',
'equalcolumns',
'equalrows',
'fence',
'fontstyle',
'fontweight',
'form',
'frame',
'framespacing',
'groupalign',
'height',
'href',
'id',
'indentalign',
'indentalignfirst',
'indentalignlast',
'indentshift',
'indentshiftfirst',
'indentshiftlast',
'indenttarget',
'infixlinebreakstyle',
'largeop',
'length',
'linebreak',
'linebreakmultchar',
'linebreakstyle',
'lineleading',
'linethickness',
'location',
'longdivstyle',
'lquote',
'lspace',
'mathbackground',
'mathcolor',
'mathsize',
'mathvariant',
'maxsize',
'minlabelspacing',
'minsize',
'movablelimits',
'notation',
'numalign',
'open',
'other',
'overflow',
'position',
'rowalign',
'rowlines',
'rowspacing',
'rowspan',
'rquote',
'rspace',
'scriptlevel',
'scriptminsize',
'scriptsizemultiplier',
'selection',
'separator',
'separators',
'shift',
'side',
'src',
'stackalign',
'stretchy',
'subscriptshift',
'superscriptshift',
'symmetric',
'voffset',
'width',
'xlink:href',
'xlink:show',
'xlink:type',
'xmlns',
'xmlns:xlink',
])
# svgtiny - foreignObject + linearGradient + radialGradient + stop
svg_elements = set(['a', 'animate', 'animateColor', 'animateMotion',
'animateTransform', 'circle', 'defs', 'desc', 'ellipse', 'foreignObject',
'font-face', 'font-face-name', 'font-face-src', 'g', 'glyph', 'hkern',
'linearGradient', 'line', 'marker', 'metadata', 'missing-glyph', 'mpath',
'path', 'polygon', 'polyline', 'radialGradient', 'rect', 'set', 'stop',
'svg', 'switch', 'text', 'title', 'tspan', 'use'])
# svgtiny + class + opacity + offset + xmlns + xmlns:xlink
svg_attributes = set(['accent-height', 'accumulate', 'additive', 'alphabetic',
'arabic-form', 'ascent', 'attributeName', 'attributeType',
'baseProfile', 'bbox', 'begin', 'by', 'calcMode', 'cap-height',
'class', 'color', 'color-rendering', 'content', 'cx', 'cy', 'd', 'dx',
'dy', 'descent', 'display', 'dur', 'end', 'fill', 'fill-opacity',
'fill-rule', 'font-family', 'font-size', 'font-stretch', 'font-style',
'font-variant', 'font-weight', 'from', 'fx', 'fy', 'g1', 'g2',
'glyph-name', 'gradientUnits', 'hanging', 'height', 'horiz-adv-x',
'horiz-origin-x', 'id', 'ideographic', 'k', 'keyPoints', 'keySplines',
'keyTimes', 'lang', 'mathematical', 'marker-end', 'marker-mid',
'marker-start', 'markerHeight', 'markerUnits', 'markerWidth', 'max',
'min', 'name', 'offset', 'opacity', 'orient', 'origin',
'overline-position', 'overline-thickness', 'panose-1', 'path',
'pathLength', 'points', 'preserveAspectRatio', 'r', 'refX', 'refY',
'repeatCount', 'repeatDur', 'requiredExtensions', 'requiredFeatures',
'restart', 'rotate', 'rx', 'ry', 'slope', 'stemh', 'stemv',
'stop-color', 'stop-opacity', 'strikethrough-position',
'strikethrough-thickness', 'stroke', 'stroke-dasharray',
'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin',
'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'systemLanguage',
'target', 'text-anchor', 'to', 'transform', 'type', 'u1', 'u2',
'underline-position', 'underline-thickness', 'unicode', 'unicode-range',
'units-per-em', 'values', 'version', 'viewBox', 'visibility', 'width',
'widths', 'x', 'x-height', 'x1', 'x2', 'xlink:actuate', 'xlink:arcrole',
'xlink:href', 'xlink:role', 'xlink:show', 'xlink:title', 'xlink:type',
'xml:base', 'xml:lang', 'xml:space', 'xmlns', 'xmlns:xlink', 'y', 'y1',
'y2', 'zoomAndPan'])
svg_attr_map = None
svg_elem_map = None
acceptable_svg_properties = set([ 'fill', 'fill-opacity', 'fill-rule',
'stroke', 'stroke-width', 'stroke-linecap', 'stroke-linejoin',
'stroke-opacity'])
def reset(self):
_BaseHTMLProcessor.reset(self)
self.unacceptablestack = 0
self.mathmlOK = 0
self.svgOK = 0
def unknown_starttag(self, tag, attrs):
acceptable_attributes = self.acceptable_attributes
keymap = {}
if not tag in self.acceptable_elements or self.svgOK:
if tag in self.unacceptable_elements_with_end_tag:
self.unacceptablestack += 1
# add implicit namespaces to html5 inline svg/mathml
if self._type.endswith('html'):
if not dict(attrs).get('xmlns'):
if tag=='svg':
attrs.append( ('xmlns','http://www.w3.org/2000/svg') )
if tag=='math':
attrs.append( ('xmlns','http://www.w3.org/1998/Math/MathML') )
# not otherwise acceptable, perhaps it is MathML or SVG?
if tag=='math' and ('xmlns','http://www.w3.org/1998/Math/MathML') in attrs:
self.mathmlOK += 1
if tag=='svg' and ('xmlns','http://www.w3.org/2000/svg') in attrs:
self.svgOK += 1
# chose acceptable attributes based on tag class, else bail
if self.mathmlOK and tag in self.mathml_elements:
acceptable_attributes = self.mathml_attributes
elif self.svgOK and tag in self.svg_elements:
# for most vocabularies, lowercasing is a good idea. Many
# svg elements, however, are camel case
if not self.svg_attr_map:
lower=[attr.lower() for attr in self.svg_attributes]
mix=[a for a in self.svg_attributes if a not in lower]
self.svg_attributes = lower
self.svg_attr_map = dict([(a.lower(),a) for a in mix])
lower=[attr.lower() for attr in self.svg_elements]
mix=[a for a in self.svg_elements if a not in lower]
self.svg_elements = lower
self.svg_elem_map = dict([(a.lower(),a) for a in mix])
acceptable_attributes = self.svg_attributes
tag = self.svg_elem_map.get(tag,tag)
keymap = self.svg_attr_map
elif not tag in self.acceptable_elements:
return
# declare xlink namespace, if needed
if self.mathmlOK or self.svgOK:
if [n_v for n_v in attrs if n_v[0].startswith('xlink:')]:
if not ('xmlns:xlink','http://www.w3.org/1999/xlink') in attrs:
attrs.append(('xmlns:xlink','http://www.w3.org/1999/xlink'))
clean_attrs = []
for key, value in self.normalize_attrs(attrs):
if key in acceptable_attributes:
key=keymap.get(key,key)
# make sure the uri uses an acceptable uri scheme
if key == 'href':
value = _makeSafeAbsoluteURI(value)
clean_attrs.append((key,value))
elif key=='style':
clean_value = self.sanitize_style(value)
if clean_value:
clean_attrs.append((key,clean_value))
_BaseHTMLProcessor.unknown_starttag(self, tag, clean_attrs)
def unknown_endtag(self, tag):
if not tag in self.acceptable_elements:
if tag in self.unacceptable_elements_with_end_tag:
self.unacceptablestack -= 1
if self.mathmlOK and tag in self.mathml_elements:
if tag == 'math' and self.mathmlOK:
self.mathmlOK -= 1
elif self.svgOK and tag in self.svg_elements:
tag = self.svg_elem_map.get(tag,tag)
if tag == 'svg' and self.svgOK:
self.svgOK -= 1
else:
return
_BaseHTMLProcessor.unknown_endtag(self, tag)
def handle_pi(self, text):
pass
def handle_decl(self, text):
pass
def handle_data(self, text):
if not self.unacceptablestack:
_BaseHTMLProcessor.handle_data(self, text)
def sanitize_style(self, style):
# disallow urls
style=re.compile('url\s*\(\s*[^\s)]+?\s*\)\s*').sub(' ',style)
# gauntlet
if not re.match("""^([:,;#%.\sa-zA-Z0-9!]|\w-\w|'[\s\w]+'|"[\s\w]+"|\([\d,\s]+\))*$""", style):
return ''
# This replaced a regexp that used re.match and was prone to pathological back-tracking.
if re.sub("\s*[-\w]+\s*:\s*[^:;]*;?", '', style).strip():
return ''
clean = []
for prop,value in re.findall("([-\w]+)\s*:\s*([^:;]*)",style):
if not value:
continue
if prop.lower() in self.acceptable_css_properties:
clean.append(prop + ': ' + value + ';')
elif prop.split('-')[0].lower() in ['background','border','margin','padding']:
for keyword in value.split():
if not keyword in self.acceptable_css_keywords and \
not self.valid_css_values.match(keyword):
break
else:
clean.append(prop + ': ' + value + ';')
elif self.svgOK and prop.lower() in self.acceptable_svg_properties:
clean.append(prop + ': ' + value + ';')
return ' '.join(clean)
def parse_comment(self, i, report=1):
ret = _BaseHTMLProcessor.parse_comment(self, i, report)
if ret >= 0:
return ret
# if ret == -1, this may be a malicious attempt to circumvent
# sanitization, or a page-destroying unclosed comment
match = re.compile(r'--[^>]*>').search(self.rawdata, i+4)
if match:
return match.end()
# unclosed comment; deliberately fail to handle_data()
return len(self.rawdata)
def _sanitizeHTML(htmlSource, encoding, _type):
if not _SGML_AVAILABLE:
return htmlSource
p = _HTMLSanitizer(encoding, _type)
htmlSource = htmlSource.replace(' stream
This function lets you define parsers that take any input source
(URL, pathname to local or network file, or actual data as a string)
and deal with it in a uniform manner. Returned object is guaranteed
to have all the basic stdio read methods (read, readline, readlines).
Just .close() the object when you're done with it.
If the etag argument is supplied, it will be used as the value of an
If-None-Match request header.
If the modified argument is supplied, it can be a tuple of 9 integers
(as returned by gmtime() in the standard Python time module) or a date
string in any format supported by feedparser. Regardless, it MUST
be in GMT (Greenwich Mean Time). It will be reformatted into an
RFC 1123-compliant date and used as the value of an If-Modified-Since
request header.
If the agent argument is supplied, it will be used as the value of a
User-Agent request header.
If the referrer argument is supplied, it will be used as the value of a
Referer[sic] request header.
If handlers is supplied, it is a list of handlers used to build a
urllib2 opener.
if request_headers is supplied it is a dictionary of HTTP request headers
that will override the values generated by FeedParser.
:return: A :class:`StringIO.StringIO` or :class:`io.BytesIO`.
"""
if hasattr(url_file_stream_or_string, 'read'):
return url_file_stream_or_string
if isinstance(url_file_stream_or_string, str) \
and urllib.parse.urlparse(url_file_stream_or_string)[0] in ('http', 'https', 'ftp', 'file', 'feed'):
# Deal with the feed URI scheme
if url_file_stream_or_string.startswith('feed:http'):
url_file_stream_or_string = url_file_stream_or_string[5:]
elif url_file_stream_or_string.startswith('feed:'):
url_file_stream_or_string = 'http:' + url_file_stream_or_string[5:]
if not agent:
agent = USER_AGENT
# Test for inline user:password credentials for HTTP basic auth
auth = None
if base64 and not url_file_stream_or_string.startswith('ftp:'):
urltype, rest = urllib.parse.splittype(url_file_stream_or_string)
realhost, rest = urllib.parse.splithost(rest)
if realhost:
user_passwd, realhost = urllib.parse.splituser(realhost)
if user_passwd:
url_file_stream_or_string = '%s://%s%s' % (urltype, realhost, rest)
auth = base64.standard_b64encode(user_passwd).strip()
# iri support
if isinstance(url_file_stream_or_string, str):
url_file_stream_or_string = _convert_to_idn(url_file_stream_or_string)
# try to open with urllib2 (to use optional headers)
request = _build_urllib2_request(url_file_stream_or_string, agent, etag, modified, referrer, auth, request_headers)
opener = urllib.request.build_opener(*tuple(handlers + [_FeedURLHandler()]))
opener.addheaders = [] # RMK - must clear so we only send our custom User-Agent
try:
return opener.open(request)
finally:
opener.close() # JohnD
# try to open with native open function (if url_file_stream_or_string is a filename)
try:
return open(url_file_stream_or_string, 'rb')
except (IOError, UnicodeEncodeError, TypeError):
# if url_file_stream_or_string is a unicode object that
# cannot be converted to the encoding returned by
# sys.getfilesystemencoding(), a UnicodeEncodeError
# will be thrown
# If url_file_stream_or_string is a string that contains NULL
# (such as an XML document encoded in UTF-32), TypeError will
# be thrown.
pass
# treat url_file_stream_or_string as string
if isinstance(url_file_stream_or_string, str):
return _StringIO(url_file_stream_or_string.encode('utf-8'))
return _StringIO(url_file_stream_or_string)
def _convert_to_idn(url):
"""Convert a URL to IDN notation"""
# this function should only be called with a unicode string
# strategy: if the host cannot be encoded in ascii, then
# it'll be necessary to encode it in idn form
parts = list(urllib.parse.urlsplit(url))
try:
parts[1].encode('ascii')
except UnicodeEncodeError:
# the url needs to be converted to idn notation
host = parts[1].rsplit(':', 1)
newhost = []
port = ''
if len(host) == 2:
port = host.pop()
for h in host[0].split('.'):
newhost.append(h.encode('idna').decode('utf-8'))
parts[1] = '.'.join(newhost)
if port:
parts[1] += ':' + port
return urllib.parse.urlunsplit(parts)
else:
return url
def _build_urllib2_request(url, agent, etag, modified, referrer, auth, request_headers):
request = urllib.request.Request(url)
request.add_header('User-Agent', agent)
if etag:
request.add_header('If-None-Match', etag)
if isinstance(modified, str):
modified = _parse_date(modified)
elif isinstance(modified, datetime.datetime):
modified = modified.utctimetuple()
if modified:
# format into an RFC 1123-compliant timestamp. We can't use
# time.strftime() since the %a and %b directives can be affected
# by the current locale, but RFC 2616 states that dates must be
# in English.
short_weekdays = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
request.add_header('If-Modified-Since', '%s, %02d %s %04d %02d:%02d:%02d GMT' % (short_weekdays[modified[6]], modified[2], months[modified[1] - 1], modified[0], modified[3], modified[4], modified[5]))
if referrer:
request.add_header('Referer', referrer)
if gzip and zlib:
request.add_header('Accept-encoding', 'gzip, deflate')
elif gzip:
request.add_header('Accept-encoding', 'gzip')
elif zlib:
request.add_header('Accept-encoding', 'deflate')
else:
request.add_header('Accept-encoding', '')
if auth:
request.add_header('Authorization', 'Basic %s' % auth)
if ACCEPT_HEADER:
request.add_header('Accept', ACCEPT_HEADER)
# use this for whatever -- cookies, special headers, etc
# [('Cookie','Something'),('x-special-header','Another Value')]
for header_name, header_value in list(request_headers.items()):
request.add_header(header_name, header_value)
request.add_header('A-IM', 'feed') # RFC 3229 support
return request
def _parse_psc_chapter_start(start):
FORMAT = r'^((\d{2}):)?(\d{2}):(\d{2})(\.(\d{3}))?$'
m = re.compile(FORMAT).match(start)
if m is None:
return None
_, h, m, s, _, ms = m.groups()
h, m, s, ms = (int(h or 0), int(m), int(s), int(ms or 0))
return datetime.timedelta(0, h*60*60 + m*60 + s, ms*1000)
_date_handlers = []
def registerDateHandler(func):
'''Register a date handler function (takes string, returns 9-tuple date in GMT)'''
_date_handlers.insert(0, func)
# ISO-8601 date parsing routines written by Fazal Majid.
# The ISO 8601 standard is very convoluted and irregular - a full ISO 8601
# parser is beyond the scope of feedparser and would be a worthwhile addition
# to the Python library.
# A single regular expression cannot parse ISO 8601 date formats into groups
# as the standard is highly irregular (for instance is 030104 2003-01-04 or
# 0301-04-01), so we use templates instead.
# Please note the order in templates is significant because we need a
# greedy match.
_iso8601_tmpl = ['YYYY-?MM-?DD', 'YYYY-0MM?-?DD', 'YYYY-MM', 'YYYY-?OOO',
'YY-?MM-?DD', 'YY-?OOO', 'YYYY',
'-YY-?MM', '-OOO', '-YY',
'--MM-?DD', '--MM',
'---DD',
'CC', '']
_iso8601_re = [
tmpl.replace(
'YYYY', r'(?P
\d{4})').replace(
'YY', r'(?P\d\d)').replace(
'MM', r'(?P[01]\d)').replace(
'DD', r'(?P[0123]\d)').replace(
'OOO', r'(?P[0123]\d\d)').replace(
'CC', r'(?P\d\d$)')
+ r'(T?(?P\d{2}):(?P\d{2})'
+ r'(:(?P\d{2}))?'
+ r'(\.(?P\d+))?'
+ r'(?P[+-](?P\d{2})(:(?P\d{2}))?|Z)?)?'
for tmpl in _iso8601_tmpl]
try:
del tmpl
except NameError:
pass
_iso8601_matches = [re.compile(regex).match for regex in _iso8601_re]
try:
del regex
except NameError:
pass
def _parse_date_iso8601(dateString):
'''Parse a variety of ISO-8601-compatible formats like 20040105'''
m = None
for _iso8601_match in _iso8601_matches:
m = _iso8601_match(dateString)
if m:
break
if not m:
return
if m.span() == (0, 0):
return
params = m.groupdict()
ordinal = params.get('ordinal', 0)
if ordinal:
ordinal = int(ordinal)
else:
ordinal = 0
year = params.get('year', '--')
if not year or year == '--':
year = time.gmtime()[0]
elif len(year) == 2:
# ISO 8601 assumes current century, i.e. 93 -> 2093, NOT 1993
year = 100 * int(time.gmtime()[0] / 100) + int(year)
else:
year = int(year)
month = params.get('month', '-')
if not month or month == '-':
# ordinals are NOT normalized by mktime, we simulate them
# by setting month=1, day=ordinal
if ordinal:
month = 1
else:
month = time.gmtime()[1]
month = int(month)
day = params.get('day', 0)
if not day:
# see above
if ordinal:
day = ordinal
elif params.get('century', 0) or \
params.get('year', 0) or params.get('month', 0):
day = 1
else:
day = time.gmtime()[2]
else:
day = int(day)
# special case of the century - is the first year of the 21st century
# 2000 or 2001 ? The debate goes on...
if 'century' in params:
year = (int(params['century']) - 1) * 100 + 1
# in ISO 8601 most fields are optional
for field in ['hour', 'minute', 'second', 'tzhour', 'tzmin']:
if not params.get(field, None):
params[field] = 0
hour = int(params.get('hour', 0))
minute = int(params.get('minute', 0))
second = int(float(params.get('second', 0)))
# weekday is normalized by mktime(), we can ignore it
weekday = 0
daylight_savings_flag = -1
tm = [year, month, day, hour, minute, second, weekday,
ordinal, daylight_savings_flag]
# ISO 8601 time zone adjustments
tz = params.get('tz')
if tz and tz != 'Z':
if tz[0] == '-':
tm[3] += int(params.get('tzhour', 0))
tm[4] += int(params.get('tzmin', 0))
elif tz[0] == '+':
tm[3] -= int(params.get('tzhour', 0))
tm[4] -= int(params.get('tzmin', 0))
else:
return None
# Python's time.mktime() is a wrapper around the ANSI C mktime(3c)
# which is guaranteed to normalize d/m/y/h/m/s.
# Many implementations have bugs, but we'll pretend they don't.
return time.localtime(time.mktime(tuple(tm)))
registerDateHandler(_parse_date_iso8601)
# 8-bit date handling routines written by ytrewq1.
_korean_year = '\ub144' # b3e2 in euc-kr
_korean_month = '\uc6d4' # bff9 in euc-kr
_korean_day = '\uc77c' # c0cf in euc-kr
_korean_am = '\uc624\uc804' # bfc0 c0fc in euc-kr
_korean_pm = '\uc624\ud6c4' # bfc0 c8c4 in euc-kr
_korean_onblog_date_re = \
re.compile('(\d{4})%s\s+(\d{2})%s\s+(\d{2})%s\s+(\d{2}):(\d{2}):(\d{2})' % \
(_korean_year, _korean_month, _korean_day))
_korean_nate_date_re = \
re.compile('(\d{4})-(\d{2})-(\d{2})\s+(%s|%s)\s+(\d{,2}):(\d{,2}):(\d{,2})' % \
(_korean_am, _korean_pm))
def _parse_date_onblog(dateString):
'''Parse a string according to the OnBlog 8-bit date format'''
m = _korean_onblog_date_re.match(dateString)
if not m:
return
w3dtfdate = '%(year)s-%(month)s-%(day)sT%(hour)s:%(minute)s:%(second)s%(zonediff)s' % \
{'year': m.group(1), 'month': m.group(2), 'day': m.group(3),\
'hour': m.group(4), 'minute': m.group(5), 'second': m.group(6),\
'zonediff': '+09:00'}
return _parse_date_w3dtf(w3dtfdate)
registerDateHandler(_parse_date_onblog)
def _parse_date_nate(dateString):
'''Parse a string according to the Nate 8-bit date format'''
m = _korean_nate_date_re.match(dateString)
if not m:
return
hour = int(m.group(5))
ampm = m.group(4)
if (ampm == _korean_pm):
hour += 12
hour = str(hour)
if len(hour) == 1:
hour = '0' + hour
w3dtfdate = '%(year)s-%(month)s-%(day)sT%(hour)s:%(minute)s:%(second)s%(zonediff)s' % \
{'year': m.group(1), 'month': m.group(2), 'day': m.group(3),\
'hour': hour, 'minute': m.group(6), 'second': m.group(7),\
'zonediff': '+09:00'}
return _parse_date_w3dtf(w3dtfdate)
registerDateHandler(_parse_date_nate)
# Unicode strings for Greek date strings
_greek_months = \
{ \
'\u0399\u03b1\u03bd': 'Jan', # c9e1ed in iso-8859-7
'\u03a6\u03b5\u03b2': 'Feb', # d6e5e2 in iso-8859-7
'\u039c\u03ac\u03ce': 'Mar', # ccdcfe in iso-8859-7
'\u039c\u03b1\u03ce': 'Mar', # cce1fe in iso-8859-7
'\u0391\u03c0\u03c1': 'Apr', # c1f0f1 in iso-8859-7
'\u039c\u03ac\u03b9': 'May', # ccdce9 in iso-8859-7
'\u039c\u03b1\u03ca': 'May', # cce1fa in iso-8859-7
'\u039c\u03b1\u03b9': 'May', # cce1e9 in iso-8859-7
'\u0399\u03bf\u03cd\u03bd': 'Jun', # c9effded in iso-8859-7
'\u0399\u03bf\u03bd': 'Jun', # c9efed in iso-8859-7
'\u0399\u03bf\u03cd\u03bb': 'Jul', # c9effdeb in iso-8859-7
'\u0399\u03bf\u03bb': 'Jul', # c9f9eb in iso-8859-7
'\u0391\u03cd\u03b3': 'Aug', # c1fde3 in iso-8859-7
'\u0391\u03c5\u03b3': 'Aug', # c1f5e3 in iso-8859-7
'\u03a3\u03b5\u03c0': 'Sep', # d3e5f0 in iso-8859-7
'\u039f\u03ba\u03c4': 'Oct', # cfeaf4 in iso-8859-7
'\u039d\u03bf\u03ad': 'Nov', # cdefdd in iso-8859-7
'\u039d\u03bf\u03b5': 'Nov', # cdefe5 in iso-8859-7
'\u0394\u03b5\u03ba': 'Dec', # c4e5ea in iso-8859-7
}
_greek_wdays = \
{ \
'\u039a\u03c5\u03c1': 'Sun', # caf5f1 in iso-8859-7
'\u0394\u03b5\u03c5': 'Mon', # c4e5f5 in iso-8859-7
'\u03a4\u03c1\u03b9': 'Tue', # d4f1e9 in iso-8859-7
'\u03a4\u03b5\u03c4': 'Wed', # d4e5f4 in iso-8859-7
'\u03a0\u03b5\u03bc': 'Thu', # d0e5ec in iso-8859-7
'\u03a0\u03b1\u03c1': 'Fri', # d0e1f1 in iso-8859-7
'\u03a3\u03b1\u03b2': 'Sat', # d3e1e2 in iso-8859-7
}
_greek_date_format_re = \
re.compile('([^,]+),\s+(\d{2})\s+([^\s]+)\s+(\d{4})\s+(\d{2}):(\d{2}):(\d{2})\s+([^\s]+)')
def _parse_date_greek(dateString):
'''Parse a string according to a Greek 8-bit date format.'''
m = _greek_date_format_re.match(dateString)
if not m:
return
wday = _greek_wdays[m.group(1)]
month = _greek_months[m.group(3)]
rfc822date = '%(wday)s, %(day)s %(month)s %(year)s %(hour)s:%(minute)s:%(second)s %(zonediff)s' % \
{'wday': wday, 'day': m.group(2), 'month': month, 'year': m.group(4),\
'hour': m.group(5), 'minute': m.group(6), 'second': m.group(7),\
'zonediff': m.group(8)}
return _parse_date_rfc822(rfc822date)
registerDateHandler(_parse_date_greek)
# Unicode strings for Hungarian date strings
_hungarian_months = \
{ \
'janu\u00e1r': '01', # e1 in iso-8859-2
'febru\u00e1ri': '02', # e1 in iso-8859-2
'm\u00e1rcius': '03', # e1 in iso-8859-2
'\u00e1prilis': '04', # e1 in iso-8859-2
'm\u00e1ujus': '05', # e1 in iso-8859-2
'j\u00fanius': '06', # fa in iso-8859-2
'j\u00falius': '07', # fa in iso-8859-2
'augusztus': '08',
'szeptember': '09',
'okt\u00f3ber': '10', # f3 in iso-8859-2
'november': '11',
'december': '12',
}
_hungarian_date_format_re = \
re.compile('(\d{4})-([^-]+)-(\d{,2})T(\d{,2}):(\d{2})((\+|-)(\d{,2}:\d{2}))')
def _parse_date_hungarian(dateString):
'''Parse a string according to a Hungarian 8-bit date format.'''
m = _hungarian_date_format_re.match(dateString)
if not m or m.group(2) not in _hungarian_months:
return None
month = _hungarian_months[m.group(2)]
day = m.group(3)
if len(day) == 1:
day = '0' + day
hour = m.group(4)
if len(hour) == 1:
hour = '0' + hour
w3dtfdate = '%(year)s-%(month)s-%(day)sT%(hour)s:%(minute)s%(zonediff)s' % \
{'year': m.group(1), 'month': month, 'day': day,\
'hour': hour, 'minute': m.group(5),\
'zonediff': m.group(6)}
return _parse_date_w3dtf(w3dtfdate)
registerDateHandler(_parse_date_hungarian)
timezonenames = {
'ut': 0, 'gmt': 0, 'z': 0,
'adt': -3, 'ast': -4, 'at': -4,
'edt': -4, 'est': -5, 'et': -5,
'cdt': -5, 'cst': -6, 'ct': -6,
'mdt': -6, 'mst': -7, 'mt': -7,
'pdt': -7, 'pst': -8, 'pt': -8,
'a': -1, 'n': 1,
'm': -12, 'y': 12,
}
# W3 date and time format parser
# http://www.w3.org/TR/NOTE-datetime
# Also supports MSSQL-style datetimes as defined at:
# http://msdn.microsoft.com/en-us/library/ms186724.aspx
# (basically, allow a space as a date/time/timezone separator)
def _parse_date_w3dtf(datestr):
if not datestr.strip():
return None
parts = datestr.lower().split('t')
if len(parts) == 1:
# This may be a date only, or may be an MSSQL-style date
parts = parts[0].split()
if len(parts) == 1:
# Treat this as a date only
parts.append('00:00:00z')
elif len(parts) > 2:
return None
date = parts[0].split('-', 2)
if not date or len(date[0]) != 4:
return None
# Ensure that `date` has 3 elements. Using '1' sets the default
# month to January and the default day to the 1st of the month.
date.extend(['1'] * (3 - len(date)))
try:
year, month, day = [int(i) for i in date]
except ValueError:
# `date` may have more than 3 elements or may contain
# non-integer strings.
return None
if parts[1].endswith('z'):
parts[1] = parts[1][:-1]
parts.append('z')
# Append the numeric timezone offset, if any, to parts.
# If this is an MSSQL-style date then parts[2] already contains
# the timezone information, so `append()` will not affect it.
# Add 1 to each value so that if `find()` returns -1 it will be
# treated as False.
loc = parts[1].find('-') + 1 or parts[1].find('+') + 1 or len(parts[1]) + 1
loc = loc - 1
parts.append(parts[1][loc:])
parts[1] = parts[1][:loc]
time = parts[1].split(':', 2)
# Ensure that time has 3 elements. Using '0' means that the
# minutes and seconds, if missing, will default to 0.
time.extend(['0'] * (3 - len(time)))
tzhour = 0
tzmin = 0
if parts[2][:1] in ('-', '+'):
try:
tzhour = int(parts[2][1:3])
tzmin = int(parts[2][4:])
except ValueError:
return None
if parts[2].startswith('-'):
tzhour = tzhour * -1
tzmin = tzmin * -1
else:
tzhour = timezonenames.get(parts[2], 0)
try:
hour, minute, second = [int(float(i)) for i in time]
except ValueError:
return None
# Create the datetime object and timezone delta objects
try:
stamp = datetime.datetime(year, month, day, hour, minute, second)
except ValueError:
return None
delta = datetime.timedelta(0, 0, 0, 0, tzmin, tzhour)
# Return the date and timestamp in a UTC 9-tuple
try:
return (stamp - delta).utctimetuple()
except (OverflowError, ValueError):
# IronPython throws ValueErrors instead of OverflowErrors
return None
registerDateHandler(_parse_date_w3dtf)
def _parse_date_rfc822(date):
"""Parse RFC 822 dates and times
http://tools.ietf.org/html/rfc822#section-5
There are some formatting differences that are accounted for:
1. Years may be two or four digits.
2. The month and day can be swapped.
3. Additional timezone names are supported.
4. A default time and timezone are assumed if only a date is present.
"""
daynames = set(['mon', 'tue', 'wed', 'thu', 'fri', 'sat', 'sun'])
months = {
'jan': 1, 'feb': 2, 'mar': 3, 'apr': 4, 'may': 5, 'jun': 6,
'jul': 7, 'aug': 8, 'sep': 9, 'oct': 10, 'nov': 11, 'dec': 12,
}
parts = date.lower().split()
if len(parts) < 5:
# Assume that the time and timezone are missing
parts.extend(('00:00:00', '0000'))
# Remove the day name
if parts[0][:3] in daynames:
parts = parts[1:]
if len(parts) < 5:
# If there are still fewer than five parts, there's not enough
# information to interpret this
return None
try:
day = int(parts[0])
except ValueError:
# Check if the day and month are swapped
if months.get(parts[0][:3]):
try:
day = int(parts[1])
except ValueError:
return None
else:
parts[1] = parts[0]
else:
return None
month = months.get(parts[1][:3])
if not month:
return None
try:
year = int(parts[2])
except ValueError:
return None
# Normalize two-digit years:
# Anything in the 90's is interpreted as 1990 and on
# Anything 89 or less is interpreted as 2089 or before
if len(parts[2]) <= 2:
year += (1900, 2000)[year < 90]
timeparts = parts[3].split(':')
timeparts = timeparts + ([0] * (3 - len(timeparts)))
try:
(hour, minute, second) = list(map(int, timeparts))
except ValueError:
return None
tzhour = 0
tzmin = 0
# Strip 'Etc/' from the timezone
if parts[4].startswith('etc/'):
parts[4] = parts[4][4:]
# Normalize timezones that start with 'gmt':
# GMT-05:00 => -0500
# GMT => GMT
if parts[4].startswith('gmt'):
parts[4] = ''.join(parts[4][3:].split(':')) or 'gmt'
# Handle timezones like '-0500', '+0500', and 'EST'
if parts[4] and parts[4][0] in ('-', '+'):
try:
tzhour = int(parts[4][1:3])
tzmin = int(parts[4][3:])
except ValueError:
return None
if parts[4].startswith('-'):
tzhour = tzhour * -1
tzmin = tzmin * -1
else:
tzhour = timezonenames.get(parts[4], 0)
# Create the datetime object and timezone delta objects
try:
stamp = datetime.datetime(year, month, day, hour, minute, second)
except ValueError:
return None
delta = datetime.timedelta(0, 0, 0, 0, tzmin, tzhour)
# Return the date and timestamp in a UTC 9-tuple
try:
return (stamp - delta).utctimetuple()
except (OverflowError, ValueError):
# IronPython throws ValueErrors instead of OverflowErrors
return None
registerDateHandler(_parse_date_rfc822)
_months = ['jan', 'feb', 'mar', 'apr', 'may', 'jun',
'jul', 'aug', 'sep', 'oct', 'nov', 'dec']
def _parse_date_asctime(dt):
"""Parse asctime-style dates.
Converts asctime to RFC822-compatible dates and uses the RFC822 parser
to do the actual parsing.
Supported formats (format is standardized to the first one listed):
* {weekday name} {month name} dd hh:mm:ss {+-tz} yyyy
* {weekday name} {month name} dd hh:mm:ss yyyy
"""
parts = dt.split()
# Insert a GMT timezone, if needed.
if len(parts) == 5:
parts.insert(4, '+0000')
# Exit if there are not six parts.
if len(parts) != 6:
return None
# Reassemble the parts in an RFC822-compatible order and parse them.
return _parse_date_rfc822(' '.join([
parts[0], parts[2], parts[1], parts[5], parts[3], parts[4],
]))
registerDateHandler(_parse_date_asctime)
def _parse_date_perforce(aDateString):
"""parse a date in yyyy/mm/dd hh:mm:ss TTT format"""
# Fri, 2006/09/15 08:19:53 EDT
_my_date_pattern = re.compile( \
r'(\w{,3}), (\d{,4})/(\d{,2})/(\d{2}) (\d{,2}):(\d{2}):(\d{2}) (\w{,3})')
m = _my_date_pattern.search(aDateString)
if m is None:
return None
dow, year, month, day, hour, minute, second, tz = m.groups()
months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
dateString = "%s, %s %s %s %s:%s:%s %s" % (dow, day, months[int(month) - 1], year, hour, minute, second, tz)
tm = rfc822.parsedate_tz(dateString)
if tm:
return time.gmtime(rfc822.mktime_tz(tm))
registerDateHandler(_parse_date_perforce)
def _parse_date(dateString):
'''Parses a variety of date formats into a 9-tuple in GMT'''
if not dateString:
return None
for handler in _date_handlers:
try:
date9tuple = handler(dateString)
except (KeyError, OverflowError, ValueError):
continue
if not date9tuple:
continue
if len(date9tuple) != 9:
continue
return date9tuple
return None
# Each marker represents some of the characters of the opening XML
# processing instruction ('
RE_XML_DECLARATION = re.compile('^<\?xml[^>]*?>')
# Capture the value of the XML processing instruction's encoding attribute.
# Example:
RE_XML_PI_ENCODING = re.compile(_s2bytes('^<\?.*encoding=[\'"](.*?)[\'"].*\?>'))
def convert_to_utf8(http_headers, data):
'''Detect and convert the character encoding to UTF-8.
http_headers is a dictionary
data is a raw string (not Unicode)'''
# This is so much trickier than it sounds, it's not even funny.
# According to RFC 3023 ('XML Media Types'), if the HTTP Content-Type
# is application/xml, application/*+xml,
# application/xml-external-parsed-entity, or application/xml-dtd,
# the encoding given in the charset parameter of the HTTP Content-Type
# takes precedence over the encoding given in the XML prefix within the
# document, and defaults to 'utf-8' if neither are specified. But, if
# the HTTP Content-Type is text/xml, text/*+xml, or
# text/xml-external-parsed-entity, the encoding given in the XML prefix
# within the document is ALWAYS IGNORED and only the encoding given in
# the charset parameter of the HTTP Content-Type header should be
# respected, and it defaults to 'us-ascii' if not specified.
# Furthermore, discussion on the atom-syntax mailing list with the
# author of RFC 3023 leads me to the conclusion that any document
# served with a Content-Type of text/* and no charset parameter
# must be treated as us-ascii. (We now do this.) And also that it
# must always be flagged as non-well-formed. (We now do this too.)
# If Content-Type is unspecified (input was local file or non-HTTP source)
# or unrecognized (server just got it totally wrong), then go by the
# encoding given in the XML prefix of the document and default to
# 'iso-8859-1' as per the HTTP specification (RFC 2616).
# Then, assuming we didn't find a character encoding in the HTTP headers
# (and the HTTP Content-type allowed us to look in the body), we need
# to sniff the first few bytes of the XML data and try to determine
# whether the encoding is ASCII-compatible. Section F of the XML
# specification shows the way here:
# http://www.w3.org/TR/REC-xml/#sec-guessing-no-ext-info
# If the sniffed encoding is not ASCII-compatible, we need to make it
# ASCII compatible so that we can sniff further into the XML declaration
# to find the encoding attribute, which will tell us the true encoding.
# Of course, none of this guarantees that we will be able to parse the
# feed in the declared character encoding (assuming it was declared
# correctly, which many are not). iconv_codec can help a lot;
# you should definitely install it if you can.
# http://cjkpython.i18n.org/
bom_encoding = ''
xml_encoding = ''
rfc3023_encoding = ''
# Look at the first few bytes of the document to guess what
# its encoding may be. We only need to decode enough of the
# document that we can use an ASCII-compatible regular
# expression to search for an XML encoding declaration.
# The heuristic follows the XML specification, section F:
# http://www.w3.org/TR/REC-xml/#sec-guessing-no-ext-info
# Check for BOMs first.
if data[:4] == codecs.BOM_UTF32_BE:
bom_encoding = 'utf-32be'
data = data[4:]
elif data[:4] == codecs.BOM_UTF32_LE:
bom_encoding = 'utf-32le'
data = data[4:]
elif data[:2] == codecs.BOM_UTF16_BE and data[2:4] != ZERO_BYTES:
bom_encoding = 'utf-16be'
data = data[2:]
elif data[:2] == codecs.BOM_UTF16_LE and data[2:4] != ZERO_BYTES:
bom_encoding = 'utf-16le'
data = data[2:]
elif data[:3] == codecs.BOM_UTF8:
bom_encoding = 'utf-8'
data = data[3:]
# Check for the characters ''''
if RE_XML_DECLARATION.search(data):
data = RE_XML_DECLARATION.sub(new_declaration, data)
else:
data = new_declaration + '\n' + data
data = data.encode('utf-8')
break
# if still no luck, give up
if not known_encoding:
error = CharacterEncodingUnknown(
'document encoding unknown, I tried ' +
'%s, %s, utf-8, windows-1252, and iso-8859-2 but nothing worked' %
(rfc3023_encoding, xml_encoding))
rfc3023_encoding = ''
elif proposed_encoding != rfc3023_encoding:
error = CharacterEncodingOverride(
'document declared as %s, but parsed as %s' %
(rfc3023_encoding, proposed_encoding))
rfc3023_encoding = proposed_encoding
return data, rfc3023_encoding, error
# Match XML entity declarations.
# Example:
RE_ENTITY_PATTERN = re.compile(_s2bytes(r'^\s*]*?)>'), re.MULTILINE)
# Match XML DOCTYPE declarations.
# Example:
RE_DOCTYPE_PATTERN = re.compile(_s2bytes(r'^\s*]*?)>'), re.MULTILINE)
# Match safe entity declarations.
# This will allow hexadecimal character references through,
# as well as text, but not arbitrary nested entities.
# Example: cubed "³"
# Example: copyright "(C)"
# Forbidden: explode1 "&explode2;&explode2;"
RE_SAFE_ENTITY_PATTERN = re.compile(_s2bytes('\s+(\w+)\s+"(&#\w+;|[^&"]*)"'))
def replace_doctype(data):
'''Strips and replaces the DOCTYPE, returns (rss_version, stripped_data)
rss_version may be 'rss091n' or None
stripped_data is the same XML document with a replaced DOCTYPE
'''
# Divide the document into two groups by finding the location
# of the first element that doesn't begin with '\n\n]>')
data = RE_DOCTYPE_PATTERN.sub(replacement, head) + data
# Precompute the safe entities for the loose parser.
safe_entities = dict((k.decode('utf-8'), v.decode('utf-8'))
for k, v in RE_SAFE_ENTITY_PATTERN.findall(replacement))
return version, data, safe_entities
# GeoRSS geometry parsers. Each return a dict with 'type' and 'coordinates'
# items, or None in the case of a parsing error.
def _parse_poslist(value, geom_type, swap=True, dims=2):
if geom_type == 'linestring':
return _parse_georss_line(value, swap, dims)
elif geom_type == 'polygon':
ring = _parse_georss_line(value, swap, dims)
return {'type': 'Polygon', 'coordinates': (ring['coordinates'],)}
else:
return None
def _gen_georss_coords(value, swap=True, dims=2):
# A generator of (lon, lat) pairs from a string of encoded GeoRSS
# coordinates. Converts to floats and swaps order.
latlons = map(float, value.strip().replace(',', ' ').split())
nxt = latlons.__next__
while True:
t = [nxt(), nxt()][::swap and -1 or 1]
if dims == 3:
t.append(nxt())
yield tuple(t)
def _parse_georss_point(value, swap=True, dims=2):
# A point contains a single latitude-longitude pair, separated by
# whitespace. We'll also handle comma separators.
try:
coords = list(_gen_georss_coords(value, swap, dims))
return {'type': 'Point', 'coordinates': coords[0]}
except (IndexError, ValueError):
return None
def _parse_georss_line(value, swap=True, dims=2):
# A line contains a space separated list of latitude-longitude pairs in
# WGS84 coordinate reference system, with each pair separated by
# whitespace. There must be at least two pairs.
try:
coords = list(_gen_georss_coords(value, swap, dims))
return {'type': 'LineString', 'coordinates': coords}
except (IndexError, ValueError):
return None
def _parse_georss_polygon(value, swap=True, dims=2):
# A polygon contains a space separated list of latitude-longitude pairs,
# with each pair separated by whitespace. There must be at least four
# pairs, with the last being identical to the first (so a polygon has a
# minimum of three actual points).
try:
ring = list(_gen_georss_coords(value, swap, dims))
except (IndexError, ValueError):
return None
if len(ring) < 4:
return None
return {'type': 'Polygon', 'coordinates': (ring,)}
def _parse_georss_box(value, swap=True, dims=2):
# A bounding box is a rectangular region, often used to define the extents
# of a map or a rough area of interest. A box contains two space seperate
# latitude-longitude pairs, with each pair separated by whitespace. The
# first pair is the lower corner, the second is the upper corner.
try:
coords = list(_gen_georss_coords(value, swap, dims))
return {'type': 'Box', 'coordinates': tuple(coords)}
except (IndexError, ValueError):
return None
# end geospatial parsers
def parse(url_file_stream_or_string, etag=None, modified=None, agent=None, referrer=None, handlers=None, request_headers=None, response_headers=None):
'''Parse a feed from a URL, file, stream, or string.
request_headers, if given, is a dict from http header name to value to add
to the request; this overrides internally generated values.
:return: A :class:`FeedParserDict`.
'''
if handlers is None:
handlers = []
if request_headers is None:
request_headers = {}
if response_headers is None:
response_headers = {}
result = FeedParserDict()
result['feed'] = FeedParserDict()
result['entries'] = []
result['bozo'] = 0
if not isinstance(handlers, list):
handlers = [handlers]
try:
f = _open_resource(url_file_stream_or_string, etag, modified, agent, referrer, handlers, request_headers)
data = f.read()
except Exception as e:
result['bozo'] = 1
result['bozo_exception'] = e
data = None
f = None
if hasattr(f, 'headers'):
result['headers'] = dict(f.headers)
# overwrite existing headers using response_headers
if 'headers' in result:
result['headers'].update(response_headers)
elif response_headers:
result['headers'] = copy.deepcopy(response_headers)
# lowercase all of the HTTP headers for comparisons per RFC 2616
if 'headers' in result:
http_headers = dict((k.lower(), v) for k, v in list(result['headers'].items()))
else:
http_headers = {}
# if feed is gzip-compressed, decompress it
if f and data and http_headers:
if gzip and 'gzip' in http_headers.get('content-encoding', ''):
try:
data = gzip.GzipFile(fileobj=_StringIO(data)).read()
except (IOError, struct.error) as e:
# IOError can occur if the gzip header is bad.
# struct.error can occur if the data is damaged.
result['bozo'] = 1
result['bozo_exception'] = e
if isinstance(e, struct.error):
# A gzip header was found but the data is corrupt.
# Ideally, we should re-request the feed without the
# 'Accept-encoding: gzip' header, but we don't.
data = None
elif zlib and 'deflate' in http_headers.get('content-encoding', ''):
try:
data = zlib.decompress(data)
except zlib.error as e:
try:
# The data may have no headers and no checksum.
data = zlib.decompress(data, -15)
except zlib.error as e:
result['bozo'] = 1
result['bozo_exception'] = e
# save HTTP headers
if http_headers:
if 'etag' in http_headers:
etag = http_headers.get('etag', '')
if not isinstance(etag, str):
etag = etag.decode('utf-8', 'ignore')
if etag:
result['etag'] = etag
if 'last-modified' in http_headers:
modified = http_headers.get('last-modified', '')
if modified:
result['modified'] = modified
result['modified_parsed'] = _parse_date(modified)
if hasattr(f, 'url'):
if not isinstance(f.url, str):
result['href'] = f.url.decode('utf-8', 'ignore')
else:
result['href'] = f.url
result['status'] = 200
if hasattr(f, 'status'):
result['status'] = f.status
if hasattr(f, 'close'):
f.close()
if data is None:
return result
# Stop processing if the server sent HTTP 304 Not Modified.
if getattr(f, 'code', 0) == 304:
result['version'] = ''
result['debug_message'] = 'The feed has not changed since you last checked, ' + \
'so the server sent no data. This is a feature, not a bug!'
return result
data, result['encoding'], error = convert_to_utf8(http_headers, data)
use_strict_parser = result['encoding'] and True or False
if error is not None:
result['bozo'] = 1
result['bozo_exception'] = error
result['version'], data, entities = replace_doctype(data)
# Ensure that baseuri is an absolute URI using an acceptable URI scheme.
contentloc = http_headers.get('content-location', '')
href = result.get('href', '')
baseuri = _makeSafeAbsoluteURI(href, contentloc) or _makeSafeAbsoluteURI(contentloc) or href
baselang = http_headers.get('content-language', None)
if not isinstance(baselang, str) and baselang is not None:
baselang = baselang.decode('utf-8', 'ignore')
if not _XML_AVAILABLE:
use_strict_parser = 0
if use_strict_parser:
# initialize the SAX parser
feedparser = _StrictFeedParser(baseuri, baselang, 'utf-8')
saxparser = xml.sax.make_parser(PREFERRED_XML_PARSERS)
saxparser.setFeature(xml.sax.handler.feature_namespaces, 1)
try:
# disable downloading external doctype references, if possible
saxparser.setFeature(xml.sax.handler.feature_external_ges, 0)
except xml.sax.SAXNotSupportedException:
pass
saxparser.setContentHandler(feedparser)
saxparser.setErrorHandler(feedparser)
source = xml.sax.xmlreader.InputSource()
source.setByteStream(_StringIO(data))
try:
saxparser.parse(source)
except xml.sax.SAXException as e:
result['bozo'] = 1
result['bozo_exception'] = feedparser.exc or e
use_strict_parser = 0
if not use_strict_parser and _SGML_AVAILABLE:
feedparser = _LooseFeedParser(baseuri, baselang, 'utf-8', entities)
feedparser.feed(data.decode('utf-8', 'replace'))
result['feed'] = feedparser.feeddata
result['entries'] = feedparser.entries
result['version'] = result['version'] or feedparser.version
result['namespaces'] = feedparser.namespacesInUse
return result
# The list of EPSG codes for geographic (latitude/longitude) coordinate
# systems to support decoding of GeoRSS GML profiles.
_geogCS = [
3819, 3821, 3824, 3889, 3906, 4001, 4002, 4003, 4004, 4005, 4006, 4007, 4008,
4009, 4010, 4011, 4012, 4013, 4014, 4015, 4016, 4018, 4019, 4020, 4021, 4022,
4023, 4024, 4025, 4027, 4028, 4029, 4030, 4031, 4032, 4033, 4034, 4035, 4036,
4041, 4042, 4043, 4044, 4045, 4046, 4047, 4052, 4053, 4054, 4055, 4075, 4081,
4120, 4121, 4122, 4123, 4124, 4125, 4126, 4127, 4128, 4129, 4130, 4131, 4132,
4133, 4134, 4135, 4136, 4137, 4138, 4139, 4140, 4141, 4142, 4143, 4144, 4145,
4146, 4147, 4148, 4149, 4150, 4151, 4152, 4153, 4154, 4155, 4156, 4157, 4158,
4159, 4160, 4161, 4162, 4163, 4164, 4165, 4166, 4167, 4168, 4169, 4170, 4171,
4172, 4173, 4174, 4175, 4176, 4178, 4179, 4180, 4181, 4182, 4183, 4184, 4185,
4188, 4189, 4190, 4191, 4192, 4193, 4194, 4195, 4196, 4197, 4198, 4199, 4200,
4201, 4202, 4203, 4204, 4205, 4206, 4207, 4208, 4209, 4210, 4211, 4212, 4213,
4214, 4215, 4216, 4218, 4219, 4220, 4221, 4222, 4223, 4224, 4225, 4226, 4227,
4228, 4229, 4230, 4231, 4232, 4233, 4234, 4235, 4236, 4237, 4238, 4239, 4240,
4241, 4242, 4243, 4244, 4245, 4246, 4247, 4248, 4249, 4250, 4251, 4252, 4253,
4254, 4255, 4256, 4257, 4258, 4259, 4260, 4261, 4262, 4263, 4264, 4265, 4266,
4267, 4268, 4269, 4270, 4271, 4272, 4273, 4274, 4275, 4276, 4277, 4278, 4279,
4280, 4281, 4282, 4283, 4284, 4285, 4286, 4287, 4288, 4289, 4291, 4292, 4293,
4294, 4295, 4296, 4297, 4298, 4299, 4300, 4301, 4302, 4303, 4304, 4306, 4307,
4308, 4309, 4310, 4311, 4312, 4313, 4314, 4315, 4316, 4317, 4318, 4319, 4322,
4324, 4326, 4463, 4470, 4475, 4483, 4490, 4555, 4558, 4600, 4601, 4602, 4603,
4604, 4605, 4606, 4607, 4608, 4609, 4610, 4611, 4612, 4613, 4614, 4615, 4616,
4617, 4618, 4619, 4620, 4621, 4622, 4623, 4624, 4625, 4626, 4627, 4628, 4629,
4630, 4631, 4632, 4633, 4634, 4635, 4636, 4637, 4638, 4639, 4640, 4641, 4642,
4643, 4644, 4645, 4646, 4657, 4658, 4659, 4660, 4661, 4662, 4663, 4664, 4665,
4666, 4667, 4668, 4669, 4670, 4671, 4672, 4673, 4674, 4675, 4676, 4677, 4678,
4679, 4680, 4681, 4682, 4683, 4684, 4685, 4686, 4687, 4688, 4689, 4690, 4691,
4692, 4693, 4694, 4695, 4696, 4697, 4698, 4699, 4700, 4701, 4702, 4703, 4704,
4705, 4706, 4707, 4708, 4709, 4710, 4711, 4712, 4713, 4714, 4715, 4716, 4717,
4718, 4719, 4720, 4721, 4722, 4723, 4724, 4725, 4726, 4727, 4728, 4729, 4730,
4731, 4732, 4733, 4734, 4735, 4736, 4737, 4738, 4739, 4740, 4741, 4742, 4743,
4744, 4745, 4746, 4747, 4748, 4749, 4750, 4751, 4752, 4753, 4754, 4755, 4756,
4757, 4758, 4759, 4760, 4761, 4762, 4763, 4764, 4765, 4801, 4802, 4803, 4804,
4805, 4806, 4807, 4808, 4809, 4810, 4811, 4813, 4814, 4815, 4816, 4817, 4818,
4819, 4820, 4821, 4823, 4824, 4901, 4902, 4903, 4904, 4979 ]