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100 lines
3.2 KiB
100 lines
3.2 KiB
"""
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Legacy module - don't use in new code!
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html5lib now has its own proper implementation.
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This module implements a tree builder for html5lib that generates lxml
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html element trees. This module uses camelCase as it follows the
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html5lib style guide.
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"""
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from html5lib.treebuilders import _base, etree as etree_builders
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from lxml import html, etree
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class DocumentType(object):
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def __init__(self, name, publicId, systemId):
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self.name = name
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self.publicId = publicId
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self.systemId = systemId
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class Document(object):
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def __init__(self):
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self._elementTree = None
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self.childNodes = []
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def appendChild(self, element):
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self._elementTree.getroot().addnext(element._element)
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class TreeBuilder(_base.TreeBuilder):
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documentClass = Document
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doctypeClass = DocumentType
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elementClass = None
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commentClass = None
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fragmentClass = Document
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def __init__(self, *args, **kwargs):
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html_builder = etree_builders.getETreeModule(html, fullTree=False)
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etree_builder = etree_builders.getETreeModule(etree, fullTree=False)
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self.elementClass = html_builder.Element
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self.commentClass = etree_builder.Comment
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_base.TreeBuilder.__init__(self, *args, **kwargs)
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def reset(self):
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_base.TreeBuilder.reset(self)
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self.rootInserted = False
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self.initialComments = []
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self.doctype = None
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def getDocument(self):
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return self.document._elementTree
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def getFragment(self):
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fragment = []
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element = self.openElements[0]._element
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if element.text:
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fragment.append(element.text)
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fragment.extend(element.getchildren())
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if element.tail:
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fragment.append(element.tail)
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return fragment
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def insertDoctype(self, name, publicId, systemId):
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doctype = self.doctypeClass(name, publicId, systemId)
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self.doctype = doctype
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def insertComment(self, data, parent=None):
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if not self.rootInserted:
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self.initialComments.append(data)
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else:
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_base.TreeBuilder.insertComment(self, data, parent)
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def insertRoot(self, name):
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buf = []
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if self.doctype and self.doctype.name:
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buf.append('<!DOCTYPE %s' % self.doctype.name)
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if self.doctype.publicId is not None or self.doctype.systemId is not None:
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buf.append(' PUBLIC "%s" "%s"' % (self.doctype.publicId,
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self.doctype.systemId))
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buf.append('>')
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buf.append('<html></html>')
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root = html.fromstring(''.join(buf))
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# Append the initial comments:
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for comment in self.initialComments:
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root.addprevious(etree.Comment(comment))
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# Create the root document and add the ElementTree to it
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self.document = self.documentClass()
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self.document._elementTree = root.getroottree()
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# Add the root element to the internal child/open data structures
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root_element = self.elementClass(name)
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root_element._element = root
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self.document.childNodes.append(root_element)
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self.openElements.append(root_element)
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self.rootInserted = True
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