Uploaded Test files
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"""Tree adapters let you convert from one tree structure to another
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Example:
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.. code-block:: python
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import html5lib
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from html5lib.treeadapters import genshi
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doc = '<html><body>Hi!</body></html>'
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treebuilder = html5lib.getTreeBuilder('etree')
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parser = html5lib.HTMLParser(tree=treebuilder)
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tree = parser.parse(doc)
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TreeWalker = html5lib.getTreeWalker('etree')
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genshi_tree = genshi.to_genshi(TreeWalker(tree))
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"""
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from __future__ import absolute_import, division, unicode_literals
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from . import sax
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__all__ = ["sax"]
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try:
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from . import genshi # noqa
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except ImportError:
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pass
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else:
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__all__.append("genshi")
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from __future__ import absolute_import, division, unicode_literals
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from genshi.core import QName, Attrs
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from genshi.core import START, END, TEXT, COMMENT, DOCTYPE
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def to_genshi(walker):
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"""Convert a tree to a genshi tree
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:arg walker: the treewalker to use to walk the tree to convert it
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:returns: generator of genshi nodes
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"""
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text = []
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for token in walker:
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type = token["type"]
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if type in ("Characters", "SpaceCharacters"):
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text.append(token["data"])
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elif text:
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yield TEXT, "".join(text), (None, -1, -1)
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text = []
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if type in ("StartTag", "EmptyTag"):
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if token["namespace"]:
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name = "{%s}%s" % (token["namespace"], token["name"])
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else:
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name = token["name"]
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attrs = Attrs([(QName("{%s}%s" % attr if attr[0] is not None else attr[1]), value)
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for attr, value in token["data"].items()])
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yield (START, (QName(name), attrs), (None, -1, -1))
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if type == "EmptyTag":
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type = "EndTag"
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if type == "EndTag":
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if token["namespace"]:
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name = "{%s}%s" % (token["namespace"], token["name"])
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else:
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name = token["name"]
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yield END, QName(name), (None, -1, -1)
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elif type == "Comment":
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yield COMMENT, token["data"], (None, -1, -1)
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elif type == "Doctype":
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yield DOCTYPE, (token["name"], token["publicId"],
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token["systemId"]), (None, -1, -1)
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else:
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pass # FIXME: What to do?
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if text:
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yield TEXT, "".join(text), (None, -1, -1)
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from __future__ import absolute_import, division, unicode_literals
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from xml.sax.xmlreader import AttributesNSImpl
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from ..constants import adjustForeignAttributes, unadjustForeignAttributes
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prefix_mapping = {}
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for prefix, localName, namespace in adjustForeignAttributes.values():
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if prefix is not None:
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prefix_mapping[prefix] = namespace
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def to_sax(walker, handler):
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"""Call SAX-like content handler based on treewalker walker
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:arg walker: the treewalker to use to walk the tree to convert it
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:arg handler: SAX handler to use
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"""
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handler.startDocument()
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for prefix, namespace in prefix_mapping.items():
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handler.startPrefixMapping(prefix, namespace)
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for token in walker:
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type = token["type"]
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if type == "Doctype":
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continue
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elif type in ("StartTag", "EmptyTag"):
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attrs = AttributesNSImpl(token["data"],
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unadjustForeignAttributes)
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handler.startElementNS((token["namespace"], token["name"]),
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token["name"],
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attrs)
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if type == "EmptyTag":
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handler.endElementNS((token["namespace"], token["name"]),
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token["name"])
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elif type == "EndTag":
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handler.endElementNS((token["namespace"], token["name"]),
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token["name"])
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elif type in ("Characters", "SpaceCharacters"):
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handler.characters(token["data"])
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elif type == "Comment":
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pass
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else:
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assert False, "Unknown token type"
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for prefix, namespace in prefix_mapping.items():
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handler.endPrefixMapping(prefix)
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handler.endDocument()
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