File libxml2-xpath-ns-attr-axis.patch of Package libxml2

From 91d19754d46acd4a639a8b9e31f50f31c78f8c9c Mon Sep 17 00:00:00 2001
From: Daniel Veillard <veillard@redhat.com>
Date: Fri, 15 Oct 2010 14:30:52 +0200
Subject: [PATCH] Fix the semantic of XPath axis for namespace/attribute context nodes

The processing of namespace and attributes nodes was not compliant
to the XPath-1.0 specification
---
 xpath.c |   23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

Index: libxml2-2.7.7/xpath.c
===================================================================
--- libxml2-2.7.7.orig/xpath.c
+++ libxml2-2.7.7/xpath.c
@@ -8106,9 +8106,17 @@ xmlXPathNextPrecedingSibling(xmlXPathPar
 xmlNodePtr
 xmlXPathNextFollowing(xmlXPathParserContextPtr ctxt, xmlNodePtr cur) {
     if ((ctxt == NULL) || (ctxt->context == NULL)) return(NULL);
-    if (cur != NULL && cur->children != NULL)
-        return cur->children ;
-    if (cur == NULL) cur = ctxt->context->node;
+    if ((cur != NULL) && (cur->type  != XML_ATTRIBUTE_NODE) &&
+        (cur->type != XML_NAMESPACE_DECL) && (cur->children != NULL))
+        return(cur->children);
+
+    if (cur == NULL) {
+        cur = ctxt->context->node;
+        if (cur->type == XML_NAMESPACE_DECL)
+            return(NULL);
+        if (cur->type == XML_ATTRIBUTE_NODE)
+            cur = cur->parent;
+    }
     if (cur == NULL) return(NULL) ; /* ERROR */
     if (cur->next != NULL) return(cur->next) ;
     do {
@@ -8162,8 +8170,13 @@ xmlNodePtr
 xmlXPathNextPreceding(xmlXPathParserContextPtr ctxt, xmlNodePtr cur)
 {
     if ((ctxt == NULL) || (ctxt->context == NULL)) return(NULL);
-    if (cur == NULL)
+    if (cur == NULL) {
         cur = ctxt->context->node;
+        if (cur->type == XML_NAMESPACE_DECL)
+            return(NULL);
+        if (cur->type == XML_ATTRIBUTE_NODE)
+            return(cur->parent);
+    }
     if (cur == NULL)
 	return (NULL);
     if ((cur->prev != NULL) && (cur->prev->type == XML_DTD_NODE))
@@ -8208,7 +8221,7 @@ xmlXPathNextPrecedingInternal(xmlXPathPa
         if (cur == NULL)
             return (NULL);
 	if (cur->type == XML_NAMESPACE_DECL)
-	    cur = (xmlNodePtr)((xmlNsPtr)cur)->next;
+            return (NULL);
         ctxt->ancestor = cur->parent;
     }
     if ((cur->prev != NULL) && (cur->prev->type == XML_DTD_NODE))