| /* |
| * @(#)$Id$ |
| * |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2001-2003 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) 2001, Sun |
| * Microsystems., http://www.sun.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| * @author Morten Jorgensen |
| * @author Santiago Pericas-Geertsen |
| * |
| */ |
| |
| package org.apache.xalan.xsltc.trax; |
| |
| import javax.xml.transform.Source; |
| import javax.xml.transform.Templates; |
| import javax.xml.transform.TransformerException; |
| import javax.xml.transform.URIResolver; |
| import javax.xml.transform.sax.TemplatesHandler; |
| |
| import org.apache.xalan.xsltc.compiler.CompilerException; |
| import org.apache.xalan.xsltc.compiler.Parser; |
| import org.apache.xalan.xsltc.compiler.SourceLoader; |
| import org.apache.xalan.xsltc.compiler.Stylesheet; |
| import org.apache.xalan.xsltc.compiler.SyntaxTreeNode; |
| import org.apache.xalan.xsltc.compiler.XSLTC; |
| import org.apache.xalan.xsltc.compiler.util.ErrorMsg; |
| |
| import org.xml.sax.ContentHandler; |
| import org.xml.sax.InputSource; |
| import org.xml.sax.Locator; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.Attributes; |
| |
| import java.util.Vector; |
| |
| /** |
| * Implementation of a JAXP1.1 TemplatesHandler |
| */ |
| public class TemplatesHandlerImpl |
| implements ContentHandler, TemplatesHandler, SourceLoader |
| { |
| /** |
| * System ID for this stylesheet. |
| */ |
| private String _systemId; |
| |
| /** |
| * Number of spaces to add for output indentation. |
| */ |
| private int _indentNumber; |
| |
| /** |
| * This URIResolver is passed to all Transformers. |
| */ |
| private URIResolver _uriResolver = null; |
| |
| /** |
| * A reference to the transformer factory that this templates |
| * object belongs to. |
| */ |
| private TransformerFactoryImpl _tfactory = null; |
| |
| /** |
| * A reference to XSLTC's parser object. |
| */ |
| private Parser _parser = null; |
| |
| /** |
| * The created Templates object. |
| */ |
| private TemplatesImpl _templates = null; |
| |
| /** |
| * Default constructor |
| */ |
| protected TemplatesHandlerImpl(int indentNumber, |
| TransformerFactoryImpl tfactory) |
| { |
| _indentNumber = indentNumber; |
| _tfactory = tfactory; |
| |
| // Instantiate XSLTC and get reference to parser object |
| _parser = new XSLTC().getParser(); |
| } |
| |
| /** |
| * Implements javax.xml.transform.sax.TemplatesHandler.getSystemId() |
| * Get the base ID (URI or system ID) from where relative URLs will be |
| * resolved. |
| * @return The systemID that was set with setSystemId(String id) |
| */ |
| public String getSystemId() { |
| return _systemId; |
| } |
| |
| /** |
| * Implements javax.xml.transform.sax.TemplatesHandler.setSystemId() |
| * Get the base ID (URI or system ID) from where relative URLs will be |
| * resolved. |
| * @param id Base URI for this stylesheet |
| */ |
| public void setSystemId(String id) { |
| _systemId = id; |
| } |
| |
| /** |
| * Store URIResolver needed for Transformers. |
| */ |
| public void setURIResolver(URIResolver resolver) { |
| _uriResolver = resolver; |
| } |
| |
| /** |
| * Implements javax.xml.transform.sax.TemplatesHandler.getTemplates() |
| * When a TemplatesHandler object is used as a ContentHandler or |
| * DocumentHandler for the parsing of transformation instructions, it |
| * creates a Templates object, which the caller can get once the SAX |
| * events have been completed. |
| * @return The Templates object that was created during the SAX event |
| * process, or null if no Templates object has been created. |
| */ |
| public Templates getTemplates() { |
| return _templates; |
| } |
| |
| /** |
| * This method implements XSLTC's SourceLoader interface. It is used to |
| * glue a TrAX URIResolver to the XSLTC compiler's Input and Import classes. |
| * |
| * @param href The URI of the document to load |
| * @param context The URI of the currently loaded document |
| * @param xsltc The compiler that resuests the document |
| * @return An InputSource with the loaded document |
| */ |
| public InputSource loadSource(String href, String context, XSLTC xsltc) { |
| try { |
| // A _uriResolver must be set if this method is called |
| final Source source = _uriResolver.resolve(href, context); |
| if (source != null) { |
| return Util.getInputSource(xsltc, source); |
| } |
| } |
| catch (TransformerException e) { |
| // Falls through |
| } |
| return null; |
| } |
| |
| // -- ContentHandler -------------------------------------------------- |
| |
| /** |
| * Re-initialize parser and forward SAX2 event. |
| */ |
| public void startDocument() { |
| XSLTC xsltc = _parser.getXSLTC(); |
| xsltc.init(); // calls _parser.init() |
| xsltc.setOutputType(XSLTC.BYTEARRAY_OUTPUT); |
| _parser.startDocument(); |
| } |
| |
| /** |
| * Just forward SAX2 event to parser object. |
| */ |
| public void endDocument() throws SAXException { |
| _parser.endDocument(); |
| |
| // create the templates |
| try { |
| XSLTC xsltc = _parser.getXSLTC(); |
| |
| // Set the translet class name if not already set |
| String transletName = null; |
| if (_systemId != null) { |
| transletName = Util.baseName(_systemId); |
| } |
| else { |
| transletName = (String)_tfactory.getAttribute("translet-name"); |
| } |
| xsltc.setClassName(transletName); |
| |
| // Get java-legal class name from XSLTC module |
| transletName = xsltc.getClassName(); |
| |
| Stylesheet stylesheet = null; |
| SyntaxTreeNode root = _parser.getDocumentRoot(); |
| |
| // Compile the translet - this is where the work is done! |
| if (!_parser.errorsFound() && root != null) { |
| // Create a Stylesheet element from the root node |
| stylesheet = _parser.makeStylesheet(root); |
| stylesheet.setSystemId(_systemId); |
| stylesheet.setParentStylesheet(null); |
| |
| // Set a document loader (for xsl:include/import) if defined |
| if (_uriResolver != null) { |
| stylesheet.setSourceLoader(this); |
| } |
| |
| _parser.setCurrentStylesheet(stylesheet); |
| |
| // Set it as top-level in the XSLTC object |
| xsltc.setStylesheet(stylesheet); |
| |
| // Create AST under the Stylesheet element |
| _parser.createAST(stylesheet); |
| } |
| |
| // Generate the bytecodes and output the translet class(es) |
| if (!_parser.errorsFound() && stylesheet != null) { |
| stylesheet.setMultiDocument(xsltc.isMultiDocument()); |
| stylesheet.setHasIdCall(xsltc.hasIdCall()); |
| |
| // Class synchronization is needed for BCEL |
| synchronized (xsltc.getClass()) { |
| stylesheet.translate(); |
| } |
| } |
| |
| if (!_parser.errorsFound()) { |
| // Check that the transformation went well before returning |
| final byte[][] bytecodes = xsltc.getBytecodes(); |
| if (bytecodes != null) { |
| _templates = |
| new TemplatesImpl(xsltc.getBytecodes(), transletName, |
| _parser.getOutputProperties(), _indentNumber, _tfactory); |
| |
| // Set URIResolver on templates object |
| if (_uriResolver != null) { |
| _templates.setURIResolver(_uriResolver); |
| } |
| } |
| } |
| else { |
| StringBuffer errorMessage = new StringBuffer(); |
| Vector errors = _parser.getErrors(); |
| final int count = errors.size(); |
| for (int i = 0; i < count; i++) { |
| if (errorMessage.length() > 0) |
| errorMessage.append('\n'); |
| errorMessage.append(errors.elementAt(i).toString()); |
| } |
| throw new SAXException(ErrorMsg.JAXP_COMPILE_ERR, new TransformerException(errorMessage.toString())); |
| } |
| } |
| catch (CompilerException e) { |
| throw new SAXException(ErrorMsg.JAXP_COMPILE_ERR, e); |
| } |
| } |
| |
| /** |
| * Just forward SAX2 event to parser object. |
| */ |
| public void startPrefixMapping(String prefix, String uri) { |
| _parser.startPrefixMapping(prefix, uri); |
| } |
| |
| /** |
| * Just forward SAX2 event to parser object. |
| */ |
| public void endPrefixMapping(String prefix) { |
| _parser.endPrefixMapping(prefix); |
| } |
| |
| /** |
| * Just forward SAX2 event to parser object. |
| */ |
| public void startElement(String uri, String localname, String qname, |
| Attributes attributes) throws SAXException |
| { |
| _parser.startElement(uri, localname, qname, attributes); |
| } |
| |
| /** |
| * Just forward SAX2 event to parser object. |
| */ |
| public void endElement(String uri, String localname, String qname) { |
| _parser.endElement(uri, localname, qname); |
| } |
| |
| /** |
| * Just forward SAX2 event to parser object. |
| */ |
| public void characters(char[] ch, int start, int length) { |
| _parser.characters(ch, start, length); |
| } |
| |
| /** |
| * Just forward SAX2 event to parser object. |
| */ |
| public void processingInstruction(String name, String value) { |
| _parser.processingInstruction(name, value); |
| } |
| |
| /** |
| * Just forward SAX2 event to parser object. |
| */ |
| public void ignorableWhitespace(char[] ch, int start, int length) { |
| _parser.ignorableWhitespace(ch, start, length); |
| } |
| |
| /** |
| * Just forward SAX2 event to parser object. |
| */ |
| public void skippedEntity(String name) { |
| _parser.skippedEntity(name); |
| } |
| |
| /** |
| * Set internal system Id and forward SAX2 event to parser object. |
| */ |
| public void setDocumentLocator(Locator locator) { |
| setSystemId(locator.getSystemId()); |
| _parser.setDocumentLocator(locator); |
| } |
| } |
| |
| |