# HG changeset patch
# User paulb
# Date 1191105264 0
# Node ID cd8ccc2f9e32a27e994e6549b63f289db5b76111
# Parent  03817ecc20ede30c98aadc0c5b8e6a986673b911
[project @ 2007-09-29 22:34:24 by paulb]
Added retrieval of namespace nodes having the standard XML_NAMESPACE value.
Introduced deletion of conflicting attributes in setAttributeNS.
Added slightly nicer errors for parsing and serialising.

diff -r 03817ecc20ed -r cd8ccc2f9e32 libxml2dom/macrolib/macrolib.py
--- a/libxml2dom/macrolib/macrolib.py	Fri Jun 20 21:46:24 2008 +0200
+++ b/libxml2dom/macrolib/macrolib.py	Sat Sep 29 22:34:24 2007 +0000
@@ -85,6 +85,11 @@
     and 'prefix'.
     """
 
+    # Special treatment for XML namespace.
+
+    if prefix == "xml" and ns == xml.dom.XML_NAMESPACE:
+        return libxml2mod.xmlSearchNsByHref(Node_ownerDocument(node), node, xml.dom.XML_NAMESPACE)
+
     new_ns = None
     current = libxml2mod.xmlNodeGetNsDefs(node)
     while current is not None:
@@ -323,6 +328,9 @@
             if prefix is None:
                 prefix = _get_invented_prefix(node, ns)
             new_ns = _make_namespace(node, ns, prefix, set_default=0)
+        # Remove any conflicting attribute.
+        if Node_hasAttributeNS(node, ns, localName):
+            Node_removeAttributeNS(node, ns, localName)
         libxml2mod.xmlSetNsProp(node, new_ns, localName, value)
     else:
         # NOTE: Needs verifying: what should happen to the namespace?
@@ -504,6 +512,18 @@
     PARSE_ERR = 81
     SERIALIZE_ERR = 82
 
+    def __repr__(self):
+        return str(self)
+
+    def __str__(self):
+        exctype = self.args[0]
+        if exctype == self.PARSE_ERR:
+            return "Parse error: LSException(%d)" % exctype
+        elif exctype == self.SERIALIZE_ERR:
+            return "Serialize error: LSException(%d)" % exctype
+        else:
+            return Exception.__repr__(self)
+
 # Utility functions.
 
 def createDocument(namespaceURI, localName, doctype):