/usr/lib/python2.7/dist-packages/html5lib/treewalkers/etree_lxml.py is in python-html5lib 0.999999999-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 | from __future__ import absolute_import, division, unicode_literals
from six import text_type
from lxml import etree
from ..treebuilders.etree import tag_regexp
from . import base
from .. import _ihatexml
def ensure_str(s):
if s is None:
return None
elif isinstance(s, text_type):
return s
else:
return s.decode("ascii", "strict")
class Root(object):
def __init__(self, et):
self.elementtree = et
self.children = []
try:
if et.docinfo.internalDTD:
self.children.append(Doctype(self,
ensure_str(et.docinfo.root_name),
ensure_str(et.docinfo.public_id),
ensure_str(et.docinfo.system_url)))
except AttributeError:
pass
try:
node = et.getroot()
except AttributeError:
node = et
while node.getprevious() is not None:
node = node.getprevious()
while node is not None:
self.children.append(node)
node = node.getnext()
self.text = None
self.tail = None
def __getitem__(self, key):
return self.children[key]
def getnext(self):
return None
def __len__(self):
return 1
class Doctype(object):
def __init__(self, root_node, name, public_id, system_id):
self.root_node = root_node
self.name = name
self.public_id = public_id
self.system_id = system_id
self.text = None
self.tail = None
def getnext(self):
return self.root_node.children[1]
class FragmentRoot(Root):
def __init__(self, children):
self.children = [FragmentWrapper(self, child) for child in children]
self.text = self.tail = None
def getnext(self):
return None
class FragmentWrapper(object):
def __init__(self, fragment_root, obj):
self.root_node = fragment_root
self.obj = obj
if hasattr(self.obj, 'text'):
self.text = ensure_str(self.obj.text)
else:
self.text = None
if hasattr(self.obj, 'tail'):
self.tail = ensure_str(self.obj.tail)
else:
self.tail = None
def __getattr__(self, name):
return getattr(self.obj, name)
def getnext(self):
siblings = self.root_node.children
idx = siblings.index(self)
if idx < len(siblings) - 1:
return siblings[idx + 1]
else:
return None
def __getitem__(self, key):
return self.obj[key]
def __bool__(self):
return bool(self.obj)
def getparent(self):
return None
def __str__(self):
return str(self.obj)
def __unicode__(self):
return str(self.obj)
def __len__(self):
return len(self.obj)
class TreeWalker(base.NonRecursiveTreeWalker):
def __init__(self, tree):
# pylint:disable=redefined-variable-type
if isinstance(tree, list):
self.fragmentChildren = set(tree)
tree = FragmentRoot(tree)
else:
self.fragmentChildren = set()
tree = Root(tree)
base.NonRecursiveTreeWalker.__init__(self, tree)
self.filter = _ihatexml.InfosetFilter()
def getNodeDetails(self, node):
if isinstance(node, tuple): # Text node
node, key = node
assert key in ("text", "tail"), "Text nodes are text or tail, found %s" % key
return base.TEXT, ensure_str(getattr(node, key))
elif isinstance(node, Root):
return (base.DOCUMENT,)
elif isinstance(node, Doctype):
return base.DOCTYPE, node.name, node.public_id, node.system_id
elif isinstance(node, FragmentWrapper) and not hasattr(node, "tag"):
return base.TEXT, ensure_str(node.obj)
elif node.tag == etree.Comment:
return base.COMMENT, ensure_str(node.text)
elif node.tag == etree.Entity:
return base.ENTITY, ensure_str(node.text)[1:-1] # strip &;
else:
# This is assumed to be an ordinary element
match = tag_regexp.match(ensure_str(node.tag))
if match:
namespace, tag = match.groups()
else:
namespace = None
tag = ensure_str(node.tag)
attrs = {}
for name, value in list(node.attrib.items()):
name = ensure_str(name)
value = ensure_str(value)
match = tag_regexp.match(name)
if match:
attrs[(match.group(1), match.group(2))] = value
else:
attrs[(None, name)] = value
return (base.ELEMENT, namespace, self.filter.fromXmlName(tag),
attrs, len(node) > 0 or node.text)
def getFirstChild(self, node):
assert not isinstance(node, tuple), "Text nodes have no children"
assert len(node) or node.text, "Node has no children"
if node.text:
return (node, "text")
else:
return node[0]
def getNextSibling(self, node):
if isinstance(node, tuple): # Text node
node, key = node
assert key in ("text", "tail"), "Text nodes are text or tail, found %s" % key
if key == "text":
# XXX: we cannot use a "bool(node) and node[0] or None" construct here
# because node[0] might evaluate to False if it has no child element
if len(node):
return node[0]
else:
return None
else: # tail
return node.getnext()
return (node, "tail") if node.tail else node.getnext()
def getParentNode(self, node):
if isinstance(node, tuple): # Text node
node, key = node
assert key in ("text", "tail"), "Text nodes are text or tail, found %s" % key
if key == "text":
return node
# else: fallback to "normal" processing
elif node in self.fragmentChildren:
return None
return node.getparent()
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