in bleach/_vendor/html5lib/serializer.py [0:0]
def serialize(self, treewalker, encoding=None):
# pylint:disable=too-many-nested-blocks
self.encoding = encoding
in_cdata = False
self.errors = []
if encoding and self.inject_meta_charset:
from .filters.inject_meta_charset import Filter
treewalker = Filter(treewalker, encoding)
# Alphabetical attributes is here under the assumption that none of
# the later filters add or change order of attributes; it needs to be
# before the sanitizer so escaped elements come out correctly
if self.alphabetical_attributes:
from .filters.alphabeticalattributes import Filter
treewalker = Filter(treewalker)
# WhitespaceFilter should be used before OptionalTagFilter
# for maximum efficiently of this latter filter
if self.strip_whitespace:
from .filters.whitespace import Filter
treewalker = Filter(treewalker)
if self.sanitize:
from .filters.sanitizer import Filter
treewalker = Filter(treewalker)
if self.omit_optional_tags:
from .filters.optionaltags import Filter
treewalker = Filter(treewalker)
for token in treewalker:
type = token["type"]
if type == "Doctype":
doctype = "<!DOCTYPE %s" % token["name"]
if token["publicId"]:
doctype += ' PUBLIC "%s"' % token["publicId"]
elif token["systemId"]:
doctype += " SYSTEM"
if token["systemId"]:
if token["systemId"].find('"') >= 0:
if token["systemId"].find("'") >= 0:
self.serializeError("System identifier contains both single and double quote characters")
quote_char = "'"
else:
quote_char = '"'
doctype += " %s%s%s" % (quote_char, token["systemId"], quote_char)
doctype += ">"
yield self.encodeStrict(doctype)
elif type in ("Characters", "SpaceCharacters"):
if type == "SpaceCharacters" or in_cdata:
if in_cdata and token["data"].find("</") >= 0:
self.serializeError("Unexpected </ in CDATA")
yield self.encode(token["data"])
else:
yield self.encode(escape(token["data"]))
elif type in ("StartTag", "EmptyTag"):
name = token["name"]
yield self.encodeStrict("<%s" % name)
if name in rcdataElements and not self.escape_rcdata:
in_cdata = True
elif in_cdata:
self.serializeError("Unexpected child element of a CDATA element")
for (_, attr_name), attr_value in token["data"].items():
# TODO: Add namespace support here
k = attr_name
v = attr_value
yield self.encodeStrict(' ')
yield self.encodeStrict(k)
if not self.minimize_boolean_attributes or \
(k not in booleanAttributes.get(name, tuple()) and
k not in booleanAttributes.get("", tuple())):
yield self.encodeStrict("=")
if self.quote_attr_values == "always" or len(v) == 0:
quote_attr = True
elif self.quote_attr_values == "spec":
quote_attr = _quoteAttributeSpec.search(v) is not None
elif self.quote_attr_values == "legacy":
quote_attr = _quoteAttributeLegacy.search(v) is not None
else:
raise ValueError("quote_attr_values must be one of: "
"'always', 'spec', or 'legacy'")
v = v.replace("&", "&")
if self.escape_lt_in_attrs:
v = v.replace("<", "<")
if quote_attr:
quote_char = self.quote_char
if self.use_best_quote_char:
if "'" in v and '"' not in v:
quote_char = '"'
elif '"' in v and "'" not in v:
quote_char = "'"
if quote_char == "'":
v = v.replace("'", "'")
else:
v = v.replace('"', """)
yield self.encodeStrict(quote_char)
yield self.encode(v)
yield self.encodeStrict(quote_char)
else:
yield self.encode(v)
if name in voidElements and self.use_trailing_solidus:
if self.space_before_trailing_solidus:
yield self.encodeStrict(" /")
else:
yield self.encodeStrict("/")
yield self.encode(">")
elif type == "EndTag":
name = token["name"]
if name in rcdataElements:
in_cdata = False
elif in_cdata:
self.serializeError("Unexpected child element of a CDATA element")
yield self.encodeStrict("</%s>" % name)
elif type == "Comment":
data = token["data"]
if data.find("--") >= 0:
self.serializeError("Comment contains --")
yield self.encodeStrict("<!--%s-->" % token["data"])
elif type == "Entity":
name = token["name"]
key = name + ";"
if key not in entities:
self.serializeError("Entity %s not recognized" % name)
if self.resolve_entities and key not in xmlEntities:
data = entities[key]
else:
data = "&%s;" % name
yield self.encodeStrict(data)
else:
self.serializeError(token["data"])