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Editing: dom.py
from __future__ import absolute_import, division, unicode_literals try: from collections.abc import MutableMapping except ImportError: # Python 2.7 from collections import MutableMapping from xml.dom import minidom, Node import weakref from . import base from .. import constants from ..constants import namespaces from .._utils import moduleFactoryFactory def getDomBuilder(DomImplementation): Dom = DomImplementation class AttrList(MutableMapping): def __init__(self, element): self.element = element def __iter__(self): return iter(self.element.attributes.keys()) def __setitem__(self, name, value): if isinstance(name, tuple): raise NotImplementedError else: attr = self.element.ownerDocument.createAttribute(name) attr.value = value self.element.attributes[name] = attr def __len__(self): return len(self.element.attributes) def items(self): return list(self.element.attributes.items()) def values(self): return list(self.element.attributes.values()) def __getitem__(self, name): if isinstance(name, tuple): raise NotImplementedError else: return self.element.attributes[name].value def __delitem__(self, name): if isinstance(name, tuple): raise NotImplementedError else: del self.element.attributes[name] class NodeBuilder(base.Node): def __init__(self, element): base.Node.__init__(self, element.nodeName) self.element = element namespace = property(lambda self: hasattr(self.element, "namespaceURI") and self.element.namespaceURI or None) def appendChild(self, node): node.parent = self self.element.appendChild(node.element) def insertText(self, data, insertBefore=None): text = self.element.ownerDocument.createTextNode(data) if insertBefore: self.element.insertBefore(text, insertBefore.element) else: self.element.appendChild(text) def insertBefore(self, node, refNode): self.element.insertBefore(node.element, refNode.element) node.parent = self def removeChild(self, node): if node.element.parentNode == self.element: self.element.removeChild(node.element) node.parent = None def reparentChildren(self, newParent): while self.element.hasChildNodes(): child = self.element.firstChild self.element.removeChild(child) newParent.element.appendChild(child) self.childNodes = [] def getAttributes(self): return AttrList(self.element) def setAttributes(self, attributes): if attributes: for name, value in list(attributes.items()): if isinstance(name, tuple): if name[0] is not None: qualifiedName = (name[0] + ":" + name[1]) else: qualifiedName = name[1] self.element.setAttributeNS(name[2], qualifiedName, value) else: self.element.setAttribute( name, value) attributes = property(getAttributes, setAttributes) def cloneNode(self): return NodeBuilder(self.element.cloneNode(False)) def hasContent(self): return self.element.hasChildNodes() def getNameTuple(self): if self.namespace is None: return namespaces["html"], self.name else: return self.namespace, self.name nameTuple = property(getNameTuple) class TreeBuilder(base.TreeBuilder): # pylint:disable=unused-variable def documentClass(self): self.dom = Dom.getDOMImplementation().createDocument(None, None, None) return weakref.proxy(self) def insertDoctype(self, token): name = token["name"] publicId = token["publicId"] systemId = token["systemId"] domimpl = Dom.getDOMImplementation() doctype = domimpl.createDocumentType(name, publicId, systemId) self.document.appendChild(NodeBuilder(doctype)) if Dom == minidom: doctype.ownerDocument = self.dom def elementClass(self, name, namespace=None): if namespace is None and self.defaultNamespace is None: node = self.dom.createElement(name) else: node = self.dom.createElementNS(namespace, name) return NodeBuilder(node) def commentClass(self, data): return NodeBuilder(self.dom.createComment(data)) def fragmentClass(self): return NodeBuilder(self.dom.createDocumentFragment()) def appendChild(self, node): self.dom.appendChild(node.element) def testSerializer(self, element): return testSerializer(element) def getDocument(self): return self.dom def getFragment(self): return base.TreeBuilder.getFragment(self).element def insertText(self, data, parent=None): data = data if parent != self: base.TreeBuilder.insertText(self, data, parent) else: # HACK: allow text nodes as children of the document node if hasattr(self.dom, '_child_node_types'): # pylint:disable=protected-access if Node.TEXT_NODE not in self.dom._child_node_types: self.dom._child_node_types = list(self.dom._child_node_types) self.dom._child_node_types.append(Node.TEXT_NODE) self.dom.appendChild(self.dom.createTextNode(data)) implementation = DomImplementation name = None def testSerializer(element): element.normalize() rv = [] def serializeElement(element, indent=0): if element.nodeType == Node.DOCUMENT_TYPE_NODE: if element.name: if element.publicId or element.systemId: publicId = element.publicId or "" systemId = element.systemId or "" rv.append("""|%s<!DOCTYPE %s "%s" "%s">""" % (' ' * indent, element.name, publicId, systemId)) else: rv.append("|%s<!DOCTYPE %s>" % (' ' * indent, element.name)) else: rv.append("|%s<!DOCTYPE >" % (' ' * indent,)) elif element.nodeType == Node.DOCUMENT_NODE: rv.append("#document") elif element.nodeType == Node.DOCUMENT_FRAGMENT_NODE: rv.append("#document-fragment") elif element.nodeType == Node.COMMENT_NODE: rv.append("|%s<!-- %s -->" % (' ' * indent, element.nodeValue)) elif element.nodeType == Node.TEXT_NODE: rv.append("|%s\"%s\"" % (' ' * indent, element.nodeValue)) else: if (hasattr(element, "namespaceURI") and element.namespaceURI is not None): name = "%s %s" % (constants.prefixes[element.namespaceURI], element.nodeName) else: name = element.nodeName rv.append("|%s<%s>" % (' ' * indent, name)) if element.hasAttributes(): attributes = [] for i in range(len(element.attributes)): attr = element.attributes.item(i) name = attr.nodeName value = attr.value ns = attr.namespaceURI if ns: name = "%s %s" % (constants.prefixes[ns], attr.localName) else: name = attr.nodeName attributes.append((name, value)) for name, value in sorted(attributes): rv.append('|%s%s="%s"' % (' ' * (indent + 2), name, value)) indent += 2 for child in element.childNodes: serializeElement(child, indent) serializeElement(element, 0) return "\n".join(rv) return locals() # The actual means to get a module! getDomModule = moduleFactoryFactory(getDomBuilder)
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