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__pycache__ | Directory | - | - | |
__init__.py | File | 2323 bytes | November 13 2023 21:20:25. | |
_base.py | File | 6919 bytes | November 13 2023 21:20:25. | |
dom.py | File | 1457 bytes | November 13 2023 21:20:25. | |
etree.py | File | 4625 bytes | November 13 2023 21:20:25. | |
genshistream.py | File | 2278 bytes | November 13 2023 21:20:25. | |
lxmletree.py | File | 6215 bytes | November 13 2023 21:20:25. | |
pulldom.py | File | 2302 bytes | November 13 2023 21:20:25. |
"""A collection of modules for iterating through different kinds of tree, generating tokens identical to those produced by the tokenizer module. To create a tree walker for a new type of tree, you need to do implement a tree walker object (called TreeWalker by convention) that implements a 'serialize' method taking a tree as sole argument and returning an iterator generating tokens. """ from __future__ import absolute_import, division, unicode_literals import sys from ..utils import default_etree treeWalkerCache = {} def getTreeWalker(treeType, implementation=None, **kwargs): """Get a TreeWalker class for various types of tree with built-in support treeType - the name of the tree type required (case-insensitive). Supported values are: "dom" - The xml.dom.minidom DOM implementation "pulldom" - The xml.dom.pulldom event stream "etree" - A generic walker for tree implementations exposing an elementtree-like interface (known to work with ElementTree, cElementTree and lxml.etree). "lxml" - Optimized walker for lxml.etree "genshi" - a Genshi stream implementation - (Currently applies to the "etree" tree type only). A module implementing the tree type e.g. xml.etree.ElementTree or cElementTree.""" treeType = treeType.lower() if treeType not in treeWalkerCache: if treeType in ("dom", "pulldom"): name = "%s.%s" % (__name__, treeType) __import__(name) mod = sys.modules[name] treeWalkerCache[treeType] = mod.TreeWalker elif treeType == "genshi": from . import genshistream treeWalkerCache[treeType] = genshistream.TreeWalker elif treeType == "lxml": from . import lxmletree treeWalkerCache[treeType] = lxmletree.TreeWalker elif treeType == "etree": from . import etree if implementation is None: implementation = default_etree # XXX: NEVER cache here, caching is done in the etree submodule return etree.getETreeModule(implementation, **kwargs).TreeWalker return treeWalkerCache.get(treeType)
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