############################################################################## # # Zope Public License (ZPL) Version 1.0 # ------------------------------------- # # Copyright (c) Digital Creations. All rights reserved. # # This license has been certified as Open Source(tm). # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are # met: # # 1. Redistributions in source code must retain the above copyright # notice, this list of conditions, and the following disclaimer. # # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions, and the following disclaimer in # the documentation and/or other materials provided with the # distribution. # # 3. Digital Creations requests that attribution be given to Zope # in any manner possible. Zope includes a "Powered by Zope" # button that is installed by default. While it is not a license # violation to remove this button, it is requested that the # attribution remain. A significant investment has been put # into Zope, and this effort will continue if the Zope community # continues to grow. This is one way to assure that growth. # # 4. All advertising materials and documentation mentioning # features derived from or use of this software must display # the following acknowledgement: # # "This product includes software developed by Digital Creations # for use in the Z Object Publishing Environment # (http://www.zope.org/)." # # In the event that the product being advertised includes an # intact Zope distribution (with copyright and license included) # then this clause is waived. # # 5. Names associated with Zope or Digital Creations must not be used to # endorse or promote products derived from this software without # prior written permission from Digital Creations. # # 6. Modified redistributions of any form whatsoever must retain # the following acknowledgment: # # "This product includes software developed by Digital Creations # for use in the Z Object Publishing Environment # (http://www.zope.org/)." # # Intact (re-)distributions of any official Zope release do not # require an external acknowledgement. # # 7. Modifications are encouraged but must be packaged separately as # patches to official Zope releases. Distributions that do not # clearly separate the patches from the original work must be clearly # labeled as unofficial distributions. Modifications which do not # carry the name Zope may be packaged in any form, as long as they # conform to all of the clauses above. # # # Disclaimer # # THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS ``AS IS'' AND ANY # EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DIGITAL CREATIONS OR ITS # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # # # This software consists of contributions made by Digital Creations and # many individuals on behalf of Digital Creations. Specific # attributions are listed in the accompanying credits file. # ############################################################################## """ Make an exact copy of a DOM document (sub)tree. """ from xml.dom import Node from DOMVisitor import DOMVisitor class CopyingDOMVisitor(DOMVisitor): def __init__(self, rootNode, documentFactory): DOMVisitor.__init__(self, rootNode) self.documentFactory = documentFactory def __call__(self): self.newDocument = None self.curNode = None DOMVisitor.__call__(self) return self.newDocument def visitElement(self, node): self.copyElement(node) self.copyAllAttributes(node) DOMVisitor.visitElement(self, node) self.backUp() def backUp(self): self.curNode = self.curNode.parentNode def copyElement(self, node): namespaceURI = node.namespaceURI if self.newDocument is None: # This must be the documentElement node. Create the # document now; this also creates the documentElement node self.newDocument = self.documentFactory.createDocument( namespaceURI, node.nodeName, None) newNode = self.newDocument.documentElement else: newNode = self.newDocument.createElementNS(namespaceURI, node.nodeName) self.curNode.appendChild(newNode) self.curNode = newNode def copyAllAttributes(self, node): for attr in node.attributes.values(): self.copyAttribute(attr) def copyAttribute(self, attr): if attr.namespaceURI: self.curNode.setAttributeNS( attr.namespaceURI, attr.nodeName, attr.nodeValue) else: self.curNode.setAttribute(attr.nodeName, attr.nodeValue) def visitText(self, node): newNode = self.newDocument.createTextNode(node.nodeValue) self.curNode.appendChild(newNode) def visitComment(self, node): if self.newDocument: newNode = self.newDocument.createComment(node.nodeValue) self.curNode.appendChild(newNode) # XXX Else, this is a comment before the documentElement; lose it.