[Fredrik Lundh] > my point was that (unless I'm missing something here), there are at > least two widely used implementations (libxml2 and the 4DOM domlette > stuff) that don't interpret the spec in this way.
Libxml2dom is of alpha quality, according to its CheeseShop page anyway. http://cheeseshop.python.org/pypi/libxml2dom/0.2.4 This can be seen in its incorrect serialisation of the following valid DOM. #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= document = libxml2dom.createDocument(None, "doc", None) top = document.xpath("*")[0] elem1 = document.createElementNS("DAV:", "myns:href") elem1.setAttributeNS(xml.dom.XMLNS_NAMESPACE, "xmlns:myns", "DAV:") document.replaceChild(elem1, top) print document.toString() #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Which produces """ <?xml version="1.0"?> <myns:href xmlns:myns="DAV:" xmlns:xmlns="http://www.w3.org/2000/xmlns/"; xmlns:myns="DAV:" /> """ Which is not even well-formed XML (duplicate attributes), let alone namespace well-formed. Note also the invalid xml namespace "xmlns:xmlns" attribute. So I don't accept that libxml2dom's behaviour is definitive in this case. The other DOM you refer to, the 4DOM stuff, was written by a participant in this discussion. Will you accept Apache Xerces 2 for Java as a widely used DOM Implementation? I guarantee that it is far more widely used than either of the DOMs mentioned. Download Xerces 2 (I am using Xerces 2.7.1), and run the following code under jython:- http://www.apache.org/dist/xml/xerces-j/ #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= # # This is a simple adaptation of the DOMGenerate.java # sample from the Xerces 2.7.1 distribution. # from javax.xml.parsers import DocumentBuilder, DocumentBuilderFactory from org.apache.xml.serialize import OutputFormat, XMLSerializer from java.io import StringWriter def create_document(): dbf = DocumentBuilderFactory.newInstance() db = dbf.newDocumentBuilder() return db.newDocument() def serialise(doc): format = OutputFormat( doc ) outbuf = StringWriter() serial = XMLSerializer( outbuf, format ) serial.asDOMSerializer() serial.serialize(doc.getDocumentElement()) return outbuf.toString() doc = create_document() root = doc.createElementNS("DAV:", "href") doc.appendChild( root ) print serialise(doc) #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Which produces """ <?xml version="1.0" encoding="UTF-8"?> <href/> """ As I expected it would. -- alan kennedy ------------------------------------------------------ email alan: http://xhaus.com/contact/alan -- http://mail.python.org/mailman/listinfo/python-list
