html5lib-python/src/html5lib/treebuilders/soup.py at python3-old · dstufft/html5lib-python · GitHub

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from BeautifulSoup import BeautifulSoup, Tag, NavigableString, Comment, Declaration

import _base

class AttrList(object):

def __init__(self, element):

self.element = element

self.attrs = dict(self.element.attrs)

def __iter__(self):

return self.attrs.items().__iter__()

def __setitem__(self, name, value):

"set attr", name, value

self.element[name] = value

def items(self):

return self.attrs.items()

def keys(self):

return self.attrs.keys()

def __getitem__(self, name):

return self.attrs[name]

def __contains__(self, name):

return name in self.attrs.keys()

class Element(_base.Node):

def __init__(self, element, soup):

_base.Node.__init__(self, element.name)

self.element = element

self.soup = soup

def _nodeIndex(self, node, refNode):

# Finds a node by identity rather than equality

for index in range(len(self.element.contents)):

if id(self.element.contents[index]) == id(refNode.element):

return index

return None

def appendChild(self, node):

if (node.element.__class__ == NavigableString and self.element.contents

and self.element.contents[-1].__class__ == NavigableString):

# Concatenate new text onto old text node

# (TODO: This has O(n^2) performance, for input like "a</a>a</a>a</a>...")

newStr = NavigableString(self.element.contents[-1]+node.element)

# Remove the old text node

# (Can't simply use .extract() by itself, because it fails if

# an equal text node exists within the parent node)

oldElement = self.element.contents[-1]

del self.element.contents[-1]

oldElement.parent = None

oldElement.extract()

self.element.insert(len(self.element.contents), newStr)

else:

self.element.insert(len(self.element.contents), node.element)

node.parent = self

def getAttributes(self):

return AttrList(self.element)

def setAttributes(self, attributes):

if attributes:

for name, value in attributes.items():

self.element[name] = value

attributes = property(getAttributes, setAttributes)

def insertText(self, data, insertBefore=None):

text = TextNode(NavigableString(data), self.soup)

if insertBefore:

self.insertBefore(text, insertBefore)

else:

self.appendChild(text)

def insertBefore(self, node, refNode):

index = self._nodeIndex(node, refNode)

if (node.element.__class__ == NavigableString and self.element.contents

and self.element.contents[index-1].__class__ == NavigableString):

# (See comments in appendChild)

newStr = NavigableString(self.element.contents[index-1]+node.element)

oldNode = self.element.contents[index-1]

del self.element.contents[index-1]

oldNode.parent = None

oldNode.extract()

self.element.insert(index-1, newStr)

else:

self.element.insert(index, node.element)

node.parent = self

def removeChild(self, node):

index = self._nodeIndex(node.parent, node)

del node.parent.element.contents[index]

node.element.parent = None

node.element.extract()

node.parent = None

def reparentChildren(self, newParent):

while self.element.contents:

child = self.element.contents[0]

child.extract()

if isinstance(child, Tag):

newParent.appendChild(Element(child, self.soup))

else:

newParent.appendChild(TextNode(child, self.soup))

def cloneNode(self):

node = Element(Tag(self.soup, self.element.name), self.soup)

for key,value in self.attributes:

node.attributes[key] = value

return node

def hasContent(self):

return self.element.contents

class TextNode(Element):

def __init__(self, element, soup):

_base.Node.__init__(self, None)

self.element = element

self.soup = soup

def cloneNode(self):

raise NotImplementedError

class TreeBuilder(_base.TreeBuilder):

def documentClass(self):

self.soup = BeautifulSoup("")

return Element(self.soup, self.soup)

def insertDoctype(self, name, publicId, systemId):

if publicId:

self.soup.insert(0, Declaration("%s PUBLIC \"%s\" \"%s\""%(name, publicId, systemId)))

elif systemId:

self.soup.insert(0, Declaration("%s SYSTEM \"%s\""%

(name, systemId)))

else:

self.soup.insert(0, Declaration(name))

def elementClass(self, name):

return Element(Tag(self.soup, name), self.soup)

def commentClass(self, data):

return TextNode(Comment(data), self.soup)

def fragmentClass(self):

self.soup = BeautifulSoup("")

self.soup.name = "[document_fragment]"

return Element(self.soup, self.soup)

def appendChild(self, node):

self.soup.insert(len(self.soup.contents), node.element)

def testSerializer(self, element):

return testSerializer(element)

def getDocument(self):

return self.soup

def getFragment(self):

return _base.TreeBuilder.getFragment(self).element

def testSerializer(element):

import re

rv = []

def serializeElement(element, indent=0):

if isinstance(element, Declaration):

doctype_regexp = r'(?P<name>[^\s]*)( PUBLIC "(?P<publicId>.*)" "(?P<systemId1>.*)"| SYSTEM "(?P<systemId2>.*)")?'

m = re.compile(doctype_regexp).match(element.string)

assert m is not None, "DOCTYPE did not match expected format"

name = m.group('name')

publicId = m.group('publicId')

if publicId is not None:

systemId = m.group('systemId1')

else:

systemId = m.group('systemId2')

if publicId is not None or systemId is not None:

rv.append("""|%s<!DOCTYPE %s "%s" "%s">"""%

(' '*indent, name, publicId or "", systemId or ""))

else:

rv.append("|%s<!DOCTYPE %s>"%(' '*indent, name))

elif isinstance(element, BeautifulSoup):

if element.name == "[document_fragment]":

rv.append("#document-fragment")

else:

rv.append("#document")

elif isinstance(element, Comment):

rv.append("|%s"%(' '*indent, element.string))

elif isinstance(element, unicode):

rv.append("|%s\"%s\"" %(' '*indent, element))

else:

rv.append("|%s<%s>"%(' '*indent, element.name))

if element.attrs:

for name, value in element.attrs:

rv.append('|%s%s="%s"' % (' '*(indent+2), name, value))

indent += 2

if hasattr(element, "contents"):

for child in element.contents:

serializeElement(child, indent)

serializeElement(element, 0)

return "\n".join(rv)

html5lib-python/src/html5lib/treebuilders/soup.py at python3-old · dstufft/html5lib-python · GitHub

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