/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* $Id: NodeInfo.java,v 1.2.4.1 2005/09/10 18:54:37 jeffsuttor Exp $
*/
package com.sun.org.apache.xalan.internal.lib;
import javax.xml.transform.SourceLocator;
import com.sun.org.apache.xalan.internal.extensions.ExpressionContext;
import com.sun.org.apache.xml.internal.dtm.ref.DTMNodeProxy;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* <code>NodeInfo</code> defines a set of XSLT extension functions to be
* used from stylesheets.
*
* @author <a href="mailto:ovidiu@cup.hp.com">Ovidiu Predescu</a>
* @since May 24, 2001
*/
public class NodeInfo
{
/**
* <code>systemId</code> returns the system id of the current
* context node.
*
* @param context an <code>ExpressionContext</code> value
* @return a <code>String</code> value
*/
public static String systemId(ExpressionContext context)
{
Node contextNode = context.getContextNode();
int nodeHandler = ((DTMNodeProxy)contextNode).getDTMNodeNumber();
SourceLocator locator = ((DTMNodeProxy)contextNode).getDTM()
.getSourceLocatorFor(nodeHandler);
if (locator != null)
return locator.getSystemId();
else
return null;
}
/**
* <code>systemId</code> returns the system id of the node passed as
* argument. If a node set is passed as argument, the system id of
* the first node in the set is returned.
*
* @param nodeList a <code>NodeList</code> value
* @return a <code>String</code> value
*/
public static String systemId(NodeList nodeList)
{
if (nodeList == null || nodeList.getLength() == 0)
return null;
Node node = nodeList.item(0);
int nodeHandler = ((DTMNodeProxy)node).getDTMNodeNumber();
SourceLocator locator = ((DTMNodeProxy)node).getDTM()
.getSourceLocatorFor(nodeHandler);
if (locator != null)
return locator.getSystemId();
else
return null;
}
/**
* <code>publicId</code> returns the public identifier of the current
* context node.
*
* Xalan does not currently record this value, and will return null.
*
* @param context an <code>ExpressionContext</code> value
* @return a <code>String</code> value
*/
public static String publicId(ExpressionContext context)
{
Node contextNode = context.getContextNode();
int nodeHandler = ((DTMNodeProxy)contextNode).getDTMNodeNumber();
SourceLocator locator = ((DTMNodeProxy)contextNode).getDTM()
.getSourceLocatorFor(nodeHandler);
if (locator != null)
return locator.getPublicId();
else
return null;
}
/**
* <code>publicId</code> returns the public identifier of the node passed as
* argument. If a node set is passed as argument, the public identifier of
* the first node in the set is returned.
*
* Xalan does not currently record this value, and will return null.
*
* @param nodeList a <code>NodeList</code> value
* @return a <code>String</code> value
*/
public static String publicId(NodeList nodeList)
{
if (nodeList == null || nodeList.getLength() == 0)
return null;
Node node = nodeList.item(0);
int nodeHandler = ((DTMNodeProxy)node).getDTMNodeNumber();
SourceLocator locator = ((DTMNodeProxy)node).getDTM()
.getSourceLocatorFor(nodeHandler);
if (locator != null)
return locator.getPublicId();
else
return null;
}
/**
* <code>lineNumber</code> returns the line number of the current
* context node.
*
* NOTE: Xalan does not normally record location information for each node.
* To obtain it, you must set the custom TrAX attribute
* "http://xml.apache.org/xalan/features/source_location"
* true in the TransformerFactory before generating the Transformer and executing
* the stylesheet. Storage cost per node will be noticably increased in this mode.
*
* @param context an <code>ExpressionContext</code> value
* @return an <code>int</code> value. This may be -1 to indicate that the
* line number is not known.
*/
public static int lineNumber(ExpressionContext context)
{
Node contextNode = context.getContextNode();
int nodeHandler = ((DTMNodeProxy)contextNode).getDTMNodeNumber();
SourceLocator locator = ((DTMNodeProxy)contextNode).getDTM()
.getSourceLocatorFor(nodeHandler);
if (locator != null)
return locator.getLineNumber();
else
return -1;
}
/**
* <code>lineNumber</code> returns the line number of the node
* passed as argument. If a node set is passed as argument, the line
* number of the first node in the set is returned.
*
* NOTE: Xalan does not normally record location information for each node.
* To obtain it, you must set the custom TrAX attribute
* "http://xml.apache.org/xalan/features/source_location"
* true in the TransformerFactory before generating the Transformer and executing
* the stylesheet. Storage cost per node will be noticably increased in this mode.
*
* @param nodeList a <code>NodeList</code> value
* @return an <code>int</code> value. This may be -1 to indicate that the
* line number is not known.
*/
public static int lineNumber(NodeList nodeList)
{
if (nodeList == null || nodeList.getLength() == 0)
return -1;
Node node = nodeList.item(0);
int nodeHandler = ((DTMNodeProxy)node).getDTMNodeNumber();
SourceLocator locator = ((DTMNodeProxy)node).getDTM()
.getSourceLocatorFor(nodeHandler);
if (locator != null)
return locator.getLineNumber();
else
return -1;
}
/**
* <code>columnNumber</code> returns the column number of the
* current context node.
*
* NOTE: Xalan does not normally record location information for each node.
* To obtain it, you must set the custom TrAX attribute
* "http://xml.apache.org/xalan/features/source_location"
* true in the TransformerFactory before generating the Transformer and executing
* the stylesheet. Storage cost per node will be noticably increased in this mode.
*
* @param context an <code>ExpressionContext</code> value
* @return an <code>int</code> value. This may be -1 to indicate that the
* column number is not known.
*/
public static int columnNumber(ExpressionContext context)
{
Node contextNode = context.getContextNode();
int nodeHandler = ((DTMNodeProxy)contextNode).getDTMNodeNumber();
SourceLocator locator = ((DTMNodeProxy)contextNode).getDTM()
.getSourceLocatorFor(nodeHandler);
if (locator != null)
return locator.getColumnNumber();
else
return -1;
}
/**
* <code>columnNumber</code> returns the column number of the node
* passed as argument. If a node set is passed as argument, the line
* number of the first node in the set is returned.
*
* NOTE: Xalan does not normally record location information for each node.
* To obtain it, you must set the custom TrAX attribute
* "http://xml.apache.org/xalan/features/source_location"
* true in the TransformerFactory before generating the Transformer and executing
* the stylesheet. Storage cost per node will be noticably increased in this mode.
*
* @param nodeList a <code>NodeList</code> value
* @return an <code>int</code> value. This may be -1 to indicate that the
* column number is not known.
*/
public static int columnNumber(NodeList nodeList)
{
if (nodeList == null || nodeList.getLength() == 0)
return -1;
Node node = nodeList.item(0);
int nodeHandler = ((DTMNodeProxy)node).getDTMNodeNumber();
SourceLocator locator = ((DTMNodeProxy)node).getDTM()
.getSourceLocatorFor(nodeHandler);
if (locator != null)
return locator.getColumnNumber();
else
return -1;
}
}
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