/*******************************************************************************
* Copyright (c) 2002, 2007 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Jens Lukowski/Innoopract - initial renaming/restructuring
* David Carver - STAR - bug 198807 - attribute order dependancy.
*******************************************************************************/
package org.eclipse.wst.xml.core.internal.contentmodel.util;
import org.w3c.dom.Attr;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import com.ibm.icu.util.StringTokenizer;
public class NamespaceAttributeVisitor
{
public static final String XML_SCHEMA_INSTANCE_URI = "http://www.w3.org/2001/XMLSchema-instance"; //$NON-NLS-1$
public String xsiPrefix = "xsi"; //$NON-NLS-1$
public void visitXMLNamespaceAttribute(Attr attr, String namespacePrefix, String namespaceURI)
{
if (namespaceURI.equals(XML_SCHEMA_INSTANCE_URI))
{
xsiPrefix = namespacePrefix;
}
}
public void visitXSINoNamespaceSchemaLocationAttribute(Attr attr, String value)
{
}
public void visitXSISchemaLocationAttribute(Attr attr, String value)
{
StringTokenizer st = new StringTokenizer(value);
while (true)
{
String nsURI = st.hasMoreTokens() ? st.nextToken() : null;
String locationHint = st.hasMoreTokens() ? st.nextToken() : null;
if (nsURI != null && locationHint != null)
{
visitXSISchemaLocationValuePair(nsURI, locationHint);
}
else
{
break;
}
}
}
public void visitXSISchemaLocationValuePair(String uri, String locationHint)
{
}
public void visitElement(Element element)
{
NamedNodeMap map = element.getAttributes();
int mapLength = map.getLength();
// First retrieve all the namespaces so that they are loaded before
// doing any special prefix handling. This allows the attributes to be
// defined in any order, but the namespaces have to be retrieved first.
for (int i = 0; i < mapLength; i++)
{
Attr attr = (Attr)map.item(i);
String prefix = DOMNamespaceHelper.getPrefix(attr.getName());
String unprefixedName = DOMNamespaceHelper.getUnprefixedName(attr.getName());
if (prefix != null && unprefixedName != null)
{
if (prefix.equals("xmlns")) //$NON-NLS-1$
{
visitXMLNamespaceAttribute(attr, unprefixedName, attr.getValue());
}
}
else if (unprefixedName != null)
{
if (unprefixedName.equals("xmlns")) //$NON-NLS-1$
{
visitXMLNamespaceAttribute(attr, "", attr.getValue()); //$NON-NLS-1$
}
}
}
for (int i = 0; i < mapLength; i++)
{
Attr attr = (Attr)map.item(i);
String prefix = DOMNamespaceHelper.getPrefix(attr.getName());
String unprefixedName = DOMNamespaceHelper.getUnprefixedName(attr.getName());
if (prefix != null && unprefixedName != null)
{
if (prefix.equals(xsiPrefix) && unprefixedName.equals("schemaLocation")) //$NON-NLS-1$
{
visitXSISchemaLocationAttribute(attr, attr.getValue());
}
else if (prefix.equals(xsiPrefix) && unprefixedName.equals("noNamespaceSchemaLocation")) //$NON-NLS-1$
{
visitXSINoNamespaceSchemaLocationAttribute(attr, attr.getValue());
}
}
}
}
}