/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.xpath.pattern;
import com.caucho.vfs.WriteStream;
import com.caucho.xml.CauchoElement;
import com.caucho.xml.CauchoNode;
import com.caucho.xml.QAbstractNode;
import com.caucho.xml.QAttr;
import org.w3c.dom.DOMException;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import java.io.IOException;
import java.util.HashMap;
/**
* A pseudo-node for handling the namespace:: axis.
*/
public class NamespaceNode extends QAbstractNode implements CauchoNode {
Node _parent;
NamespaceNode _next;
NamespaceNode _prev;
String _local;
String _name;
String _url;
/**
* Creates a new namespace node.
*/
public NamespaceNode(Node parent, NamespaceNode next,
String prefix, String url)
{
_parent = parent;
_next = next;
if (next != null)
next._prev = this;
_local = prefix;
if (prefix == null || prefix.equals(""))
_name = "xmlns";
else
_name = ("xmlns:" + prefix).intern();
_url = url;
}
/**
* Creates a list of namespace nodes based on the current element.
* The list is the list of namespaces active for that element.
*/
static NamespaceNode create(Node node)
{
Node top = node;
NamespaceNode nodes = null;
HashMap<String,String> map = new HashMap<String,String>();
for (; node instanceof CauchoElement; node = node.getParentNode()) {
CauchoElement elt = (CauchoElement) node;
String prefix = elt.getPrefix();
String url = elt.getNamespaceURI();
if (url == null)
url = "";
if (map.get(prefix) == null) {
map.put(prefix, url);
if (! url.equals(""))
nodes = new NamespaceNode(top, nodes, prefix, url);
}
QAttr attr = (QAttr) elt.getFirstAttribute();
for (; attr != null; attr = (QAttr) attr.getNextSibling()) {
String name = attr.getNodeName();
prefix = null;
url = "";
if (name.startsWith("xmlns:")) {
prefix = name.substring(6);
url = attr.getNodeValue();
}
else if (name.equals("xmlns")) {
prefix = "";
url = attr.getNodeValue();
}
else {
prefix = attr.getPrefix();
url = attr.getNamespaceURI();
}
if (url == null)
url = "";
if (map.get(prefix) == null) {
map.put(prefix, url);
if (! url.equals(""))
nodes = new NamespaceNode(top, nodes, prefix, url);
}
}
}
return nodes;
}
public short getNodeType()
{
return ATTRIBUTE_NODE;
}
public String getNodeName()
{
return _name;
}
public String getPrefix()
{
return "xmlns";
}
public void setPrefix(String prefix)
{
}
public boolean supports(String feature, String version)
{
return false;
}
public String getCanonicalName()
{
return "";
}
public String getLocalName()
{
return _local;
}
public String getNamespaceURI()
{
return null;
}
public String getNodeValue()
{
return _url;
}
public Node getParentNode()
{
return _parent;
}
public Node getPreviousSibling()
{
return _prev;
}
public Node getNextSibling()
{
return _next;
}
// The following are just stubs to conform to the api
public void setLocation(String filename, int line, int column)
{
}
public String getFilename()
{
return null;
}
public int getLine()
{
return 0;
}
public int getColumn() { return 0; }
public Document getOwnerDocument() { return null; }
public void setNodeValue(String value) {}
public NodeList getChildNodes() { return null; }
public Node getFirstChild() { return null; }
public Node getLastChild() { return null; }
public NamedNodeMap getAttributes() { return null; }
public Node insertBefore(Node newChild, Node refChild)
{
return null;
}
public Node replaceChild(Node newChild, Node refChild)
{
return null;
}
public Node removeChild(Node oldChild) throws DOMException
{
return null;
}
public Node appendChild(Node newNode) throws DOMException
{
return null;
}
public boolean hasChildNodes() { return false; }
public boolean equals(Node arg, boolean deep)
{
return this == arg;
}
public Node cloneNode(boolean deep)
{
return null;
}
public void normalize()
{
}
public String getTextValue() { return getNodeValue(); }
public boolean checkValid() { return false; }
public void print(WriteStream out) throws IOException
{
}
public void printPretty(WriteStream out) throws IOException
{
}
public void printHtml(WriteStream out) throws IOException
{
}
public boolean isSupported(String feature, String version)
{
return false;
}
public boolean hasAttributes()
{
return false;
}
public String toString()
{
return "NamespaceNode[" + _name + " " + _url + "]";
}
}