- /*
- * The Apache Software License, Version 1.1
- *
- *
- * Copyright (c) 1999 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xalan" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation and was
- * originally based on software copyright (c) 1999, Lotus
- * Development Corporation., http://www.lotus.com. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- package org.apache.xalan.lib;
-
- import org.w3c.dom.Node;
- import org.w3c.dom.Document;
- import org.w3c.dom.DocumentFragment;
- import org.w3c.dom.NodeList;
- import org.w3c.dom.Text;
- import org.w3c.dom.traversal.NodeIterator;
-
- import org.apache.xpath.NodeSet;
- import org.apache.xpath.objects.XObject;
- import org.apache.xpath.objects.XBoolean;
- import org.apache.xpath.objects.XNumber;
- import org.apache.xpath.objects.XRTreeFrag;
-
- import org.apache.xpath.XPath;
- import org.apache.xpath.XPathContext;
- import org.apache.xpath.DOMHelper;
- import org.apache.xml.dtm.DTMIterator;
- import org.apache.xml.dtm.DTM;
- import org.apache.xml.dtm.ref.DTMNodeIterator;
- import org.apache.xml.utils.XMLString;
-
- import org.xml.sax.SAXNotSupportedException;
-
- import java.util.Hashtable;
- import java.util.StringTokenizer;
-
- import org.apache.xalan.extensions.ExpressionContext;
- import org.apache.xalan.res.XSLMessages;
- import org.apache.xalan.res.XSLTErrorResources;
- import org.apache.xalan.xslt.EnvironmentCheck;
-
- import javax.xml.parsers.*;
-
- /**
- * <meta name="usage" content="general"/>
- * This class contains EXSLT common extension functions.
- * It is accessed by specifying a namespace URI as follows:
- * <pre>
- * xmlns:exslt="http://exslt.org/common"
- * </pre>
- *
- * The documentation for each function has been copied from the relevant
- * EXSLT Implementer page.
- *
- * @see <a href="http://www.exslt.org/">EXSLT</a>
- */
- public class ExsltCommon
- {
- /**
- * The exsl:object-type function returns a string giving the type of the object passed
- * as the argument. The possible object types are: 'string', 'number', 'boolean',
- * 'node-set', 'RTF', or 'external'.
- *
- * Most XSLT object types can be coerced to each other without error. However, there are
- * certain coercions that raise errors, most importantly treating anything other than a
- * node set as a node set. Authors of utilities such as named templates or user-defined
- * extension functions may wish to give some flexibility in the parameter and argument values
- * that are accepted by the utility; the exsl:object-type function enables them to do so.
- *
- * The Xalan extensions MethodResolver converts 'object-type' to 'objectType'.
- *
- * @param obj The object to be typed.
- * @return objectType 'string', 'number', 'boolean', 'node-set', 'RTF', or 'external'.
- *
- * @see <a href="http://www.exslt.org/">EXSLT</a>
- */
- public static String objectType (Object obj)
- {
- if (obj instanceof String)
- return "string";
- else if (obj instanceof Boolean)
- return "boolean";
- else if (obj instanceof Number)
- return "number";
- else if (obj instanceof DTMNodeIterator)
- {
- DTMIterator dtmI = ((DTMNodeIterator)obj).getDTMIterator();
- if (dtmI instanceof org.apache.xpath.axes.RTFIterator)
- return "RTF";
- else
- return "node-set";
- }
- else
- return "unknown";
- }
-
- /**
- * The exsl:node-set function converts a result tree fragment (which is what you get
- * when you use the content of xsl:variable rather than its select attribute to give
- * a variable value) into a node set. This enables you to process the XML that you create
- * within a variable, and therefore do multi-step processing.
- *
- * You can also use this function to turn a string into a text node, which is helpful
- * if you want to pass a string to a function that only accepts a node set.
- *
- * The Xalan extensions MethodResolver converts 'node-set' to 'nodeSet'.
- *
- * @param myProcesser is passed in by the Xalan extension processor
- * @param rtf The result tree fragment to be converted to a node-set.
- *
- * @returns node-set with the contents of the result tree fragment.
- *
- * Note: Already implemented in the xalan namespace as nodeset.
- *
- * @see <a href="http://www.exslt.org/">EXSLT</a>
- */
- public static NodeSet nodeSet(ExpressionContext myProcessor, Object rtf)
- {
- return Extensions.nodeset(myProcessor, rtf);
- }
-
- }