mirror of
https://github.com/moparisthebest/SickRage
synced 2024-12-13 11:32:20 -05:00
79 lines
2.6 KiB
Python
79 lines
2.6 KiB
Python
|
import gettext
|
||
|
|
_ = gettext.gettext
|
||
|
|
|
||
|
|
import _base
|
||
|
|
|
||
|
|
class TreeWalker(_base.NonRecursiveTreeWalker):
|
||
|
|
"""Given that simpletree has no performant way of getting a node's
|
||
|
|
next sibling, this implementation returns "nodes" as tuples with the
|
||
|
|
following content:
|
||
|
|
|
||
|
|
1. The parent Node (Element, Document or DocumentFragment)
|
||
|
|
|
||
|
|
2. The child index of the current node in its parent's children list
|
||
|
|
|
||
|
|
3. A list used as a stack of all ancestors. It is a pair tuple whose
|
||
|
|
first item is a parent Node and second item is a child index.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def getNodeDetails(self, node):
|
||
|
|
if isinstance(node, tuple): # It might be the root Node
|
||
|
|
parent, idx, parents = node
|
||
|
|
node = parent.childNodes[idx]
|
||
|
|
|
||
|
|
# testing node.type allows us not to import treebuilders.simpletree
|
||
|
|
if node.type in (1, 2): # Document or DocumentFragment
|
||
|
|
return (_base.DOCUMENT,)
|
||
|
|
|
||
|
|
elif node.type == 3: # DocumentType
|
||
|
|
return _base.DOCTYPE, node.name, node.publicId, node.systemId
|
||
|
|
|
||
|
|
elif node.type == 4: # TextNode
|
||
|
|
return _base.TEXT, node.value
|
||
|
|
|
||
|
|
elif node.type == 5: # Element
|
||
|
|
attrs = {}
|
||
|
|
for name, value in node.attributes.items():
|
||
|
|
if isinstance(name, tuple):
|
||
|
|
attrs[(name[2],name[1])] = value
|
||
|
|
else:
|
||
|
|
attrs[(None,name)] = value
|
||
|
|
return (_base.ELEMENT, node.namespace, node.name,
|
||
|
|
attrs, node.hasContent())
|
||
|
|
|
||
|
|
elif node.type == 6: # CommentNode
|
||
|
|
return _base.COMMENT, node.data
|
||
|
|
|
||
|
|
else:
|
||
|
|
return _node.UNKNOWN, node.type
|
||
|
|
|
||
|
|
def getFirstChild(self, node):
|
||
|
|
if isinstance(node, tuple): # It might be the root Node
|
||
|
|
parent, idx, parents = node
|
||
|
|
parents.append((parent, idx))
|
||
|
|
node = parent.childNodes[idx]
|
||
|
|
else:
|
||
|
|
parents = []
|
||
|
|
|
||
|
|
assert node.hasContent(), "Node has no children"
|
||
|
|
return (node, 0, parents)
|
||
|
|
|
||
|
|
def getNextSibling(self, node):
|
||
|
|
assert isinstance(node, tuple), "Node is not a tuple: " + str(node)
|
||
|
|
parent, idx, parents = node
|
||
|
|
idx += 1
|
||
|
|
if len(parent.childNodes) > idx:
|
||
|
|
return (parent, idx, parents)
|
||
|
|
else:
|
||
|
|
return None
|
||
|
|
|
||
|
|
def getParentNode(self, node):
|
||
|
|
assert isinstance(node, tuple)
|
||
|
|
parent, idx, parents = node
|
||
|
|
if parents:
|
||
|
|
parent, idx = parents.pop()
|
||
|
|
return parent, idx, parents
|
||
|
|
else:
|
||
|
|
# HACK: We could return ``parent`` but None will stop the algorithm the same way
|
||
|
|
return None
|