| /* |
| * 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; |
| // Imported classes for Extension elements |
| import org.apache.xalan.extensions.XSLProcessorContext; |
| import org.apache.xalan.templates.ElemExtensionCall; |
| import org.apache.xalan.templates.ElemLiteralResult; |
| import org.apache.xalan.templates.AVT; |
| import org.apache.xalan.transformer.TransformerImpl; |
| |
| // Imported JAXP/TrAX classes |
| import javax.xml.transform.TransformerFactory; |
| import javax.xml.transform.Transformer; |
| import javax.xml.transform.Templates; |
| import javax.xml.transform.stream.StreamSource; |
| import javax.xml.transform.TransformerException; |
| import javax.xml.transform.TransformerConfigurationException; |
| import javax.xml.transform.sax.SAXTransformerFactory; |
| import javax.xml.transform.sax.TransformerHandler; |
| import javax.xml.transform.sax.SAXResult; |
| |
| // Imported JAXP parsing classes |
| import javax.xml.parsers.DocumentBuilder; |
| import javax.xml.parsers.DocumentBuilderFactory; |
| import javax.xml.parsers.ParserConfigurationException; |
| |
| // Imported SAX classes |
| import org.xml.sax.InputSource; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.SAXNotRecognizedException; |
| import org.xml.sax.Parser; |
| import org.xml.sax.helpers.ParserAdapter; |
| import org.xml.sax.helpers.XMLReaderFactory; |
| import org.xml.sax.XMLReader; |
| import org.xml.sax.ContentHandler; |
| import org.xml.sax.ext.LexicalHandler; |
| |
| // Imported DOM classes |
| import org.w3c.dom.Node; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.NodeList; |
| |
| // Imported Serializer classes |
| import org.apache.xalan.serialize.Serializer; |
| import org.apache.xalan.serialize.SerializerFactory; |
| import org.apache.xalan.templates.OutputProperties; |
| |
| // Other org.apache imports |
| import org.apache.xpath.XPathContext; |
| import org.apache.xml.utils.SystemIDResolver; |
| |
| // Imported java.io and java.util classes |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.FileNotFoundException; |
| import java.util.Vector; |
| import java.util.Properties; |
| |
| /** |
| * Sets stylesheet params and pipes an XML document through a series of 1 or more stylesheets. |
| * PipeDocument is invoked from a stylesheet as the {@link #pipeDocument pipeDocument extension element}. |
| * |
| * @author Donald Leslie |
| */ |
| public class PipeDocument |
| { |
| /** |
| * Extension element for piping an XML document through a series of 1 or more transformations. |
| * |
| * <pre>Common usage pattern: A stylesheet transforms a listing of documents to be |
| * transformed into a TOC. For each document in the listing calls the pipeDocument |
| * extension element to pipe that document through a series of 1 or more stylesheets |
| * to the desired output document. |
| * |
| * Syntax: |
| * <xsl:stylesheet version="1.0" |
| * xmlns:xsl="http://www.w3.org/1999/XSL/Transform" |
| * xmlns:pipe="xalan://PipeDocument" |
| * extension-element-prefixes="pipe"> |
| * ... |
| * <pipe:pipeDocument source="source.xml" target="target.xml"> |
| * <stylesheet href="ss1.xsl"> |
| * <param name="param1" value="value1"/> |
| * </stylesheet> |
| * <stylesheet href="ss2.xsl"> |
| * <param name="param1" value="value1"/> |
| * <param name="param2" value="value2"/> |
| * </stylesheet> |
| * <stylesheet href="ss1.xsl"/> |
| * </pipe:pipeDocument> |
| * |
| * Notes:</pre> |
| * <ul> |
| * <li>The base URI for the source attribute is the XML "listing" document.<li/> |
| * <li>The target attribute is taken as is (base is the current user directory).<li/> |
| * <li>The stylsheet containg the extension element is the base URI for the |
| * stylesheet hrefs.<li/> |
| * </ul> |
| */ |
| public void pipeDocument(XSLProcessorContext context, ElemExtensionCall elem) |
| throws TransformerException, TransformerConfigurationException, |
| SAXException, IOException, FileNotFoundException |
| { |
| try |
| { |
| SAXTransformerFactory saxTFactory = (SAXTransformerFactory) TransformerFactory.newInstance(); |
| |
| // XML doc to transform. |
| String source = elem.getAttribute("source", |
| context.getContextNode(), |
| context.getTransformer()); |
| TransformerImpl transImpl = context.getTransformer(); |
| |
| //Base URI for input doc, so base for relative URI to XML doc to transform. |
| String baseURLOfSource = transImpl.getBaseURLOfSource(); |
| // Absolute URI for XML doc to transform. |
| String absSourceURL = SystemIDResolver.getAbsoluteURI(source, baseURLOfSource); |
| |
| // Transformation target |
| String target = elem.getAttribute("target", |
| context.getContextNode(), |
| context.getTransformer()); |
| |
| XPathContext xctxt = context.getTransformer().getXPathContext(); |
| int xt = xctxt.getDTMHandleFromNode(context.getContextNode()); |
| |
| // Get System Id for stylesheet; to be used to resolve URIs to other stylesheets. |
| String sysId = elem.getSystemId(); |
| |
| NodeList ssNodes = null; |
| NodeList paramNodes = null; |
| Node ssNode = null; |
| Node paramNode = null; |
| if (elem.hasChildNodes()) |
| { |
| ssNodes = elem.getChildNodes(); |
| // Vector to contain TransformerHandler for each stylesheet. |
| Vector vTHandler = new Vector(ssNodes.getLength()); |
| |
| // The child nodes of an extension element node are instances of |
| // ElemLiteralResult, which requires does not fully support the standard |
| // Node interface. Accordingly, some special handling is required (see below) |
| // to get attribute values. |
| for (int i = 0; i < ssNodes.getLength(); i++) |
| { |
| ssNode = ssNodes.item(i); |
| if (ssNode.getNodeType() == ssNode.ELEMENT_NODE |
| && ((Element)ssNode).getTagName().equals("stylesheet") |
| && ssNode instanceof ElemLiteralResult) |
| { |
| AVT avt = ((ElemLiteralResult)ssNode).getLiteralResultAttribute("href"); |
| String href = avt.evaluate(xctxt,xt, elem); |
| String absURI = SystemIDResolver.getAbsoluteURI(href, sysId); |
| Templates tmpl = saxTFactory.newTemplates(new StreamSource(absURI)); |
| TransformerHandler tHandler = saxTFactory.newTransformerHandler(tmpl); |
| Transformer trans = tHandler.getTransformer(); |
| |
| // AddTransformerHandler to vector |
| vTHandler.addElement(tHandler); |
| |
| paramNodes = ssNode.getChildNodes(); |
| for (int j = 0; j < paramNodes.getLength(); j++) |
| { |
| paramNode = paramNodes.item(j); |
| if (paramNode.getNodeType() == paramNode.ELEMENT_NODE |
| && ((Element)paramNode).getTagName().equals("param") |
| && paramNode instanceof ElemLiteralResult) |
| { |
| avt = ((ElemLiteralResult)paramNode).getLiteralResultAttribute("name"); |
| String pName = avt.evaluate(xctxt,xt, elem); |
| avt = ((ElemLiteralResult)paramNode).getLiteralResultAttribute("value"); |
| String pValue = avt.evaluate(xctxt,xt, elem); |
| trans.setParameter(pName, pValue); |
| } |
| } |
| } |
| } |
| usePipe(vTHandler, absSourceURL, target); |
| } |
| } |
| catch (Exception e) |
| { |
| e.printStackTrace(); |
| } |
| } |
| /** |
| * Uses a Vector of TransformerHandlers to pipe XML input document through |
| * a series of 1 or more transformations. Called by {@link #pipeDocument} and {@link #main}. |
| * |
| * @param vTHandler Vector of Transformation Handlers (1 per stylesheet). |
| * @param source absolute URI to XML input |
| * @param target absolute path to transformation output. |
| */ |
| public void usePipe(Vector vTHandler, String source, String target) |
| throws TransformerException, TransformerConfigurationException, |
| FileNotFoundException, IOException, SAXException, SAXNotRecognizedException |
| { |
| XMLReader reader = XMLReaderFactory.createXMLReader(); |
| TransformerHandler tHFirst = (TransformerHandler)vTHandler.firstElement(); |
| reader.setContentHandler(tHFirst); |
| reader.setProperty("http://xml.org/sax/properties/lexical-handler", tHFirst); |
| for (int i = 1; i < vTHandler.size(); i++) |
| { |
| TransformerHandler tHFrom = (TransformerHandler)vTHandler.elementAt(i-1); |
| TransformerHandler tHTo = (TransformerHandler)vTHandler.elementAt(i); |
| tHFrom.setResult(new SAXResult(tHTo)); |
| } |
| TransformerHandler tHLast = (TransformerHandler)vTHandler.lastElement(); |
| Transformer trans = tHLast.getTransformer(); |
| Properties outputProps = trans.getOutputProperties(); |
| Serializer serializer = SerializerFactory.getSerializer(outputProps); |
| serializer.setOutputStream(new FileOutputStream(target)); |
| tHLast.setResult(new SAXResult(serializer.asContentHandler())); |
| |
| reader.parse(source); |
| } |
| |
| } |
