| /* |
| * 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.trace; |
| |
| import java.io.*; |
| |
| import org.w3c.dom.*; |
| import org.w3c.dom.traversal.NodeIterator; |
| |
| import org.apache.xalan.templates.ElemTemplate; |
| import org.apache.xalan.templates.ElemTemplateElement; |
| import org.apache.xalan.templates.ElemTextLiteral; |
| import org.apache.xalan.templates.Constants; |
| import org.apache.xpath.axes.ContextNodeList; |
| |
| /** |
| * <meta name="usage" content="advanced"/> |
| * Implementation of the TraceListener interface that |
| * prints each event to standard out as it occurs. |
| * |
| * @see org.apache.xalan.trace.TracerEvent |
| */ |
| public class PrintTraceListener implements TraceListener |
| { |
| |
| /** |
| * Construct a trace listener. |
| * |
| * @param pw PrintWriter to use for tracing events |
| */ |
| public PrintTraceListener(java.io.PrintWriter pw) |
| { |
| m_pw = pw; |
| } |
| |
| /** |
| * The print writer where the events should be written. |
| */ |
| java.io.PrintWriter m_pw; |
| |
| /** |
| * This needs to be set to true if the listener is to print an event whenever a template is invoked. |
| */ |
| public boolean m_traceTemplates = false; |
| |
| /** |
| * Set to true if the listener is to print events that occur as each node is 'executed' in the stylesheet. |
| */ |
| public boolean m_traceElements = false; |
| |
| /** |
| * Set to true if the listener is to print information after each result-tree generation event. |
| */ |
| public boolean m_traceGeneration = false; |
| |
| /** |
| * Set to true if the listener is to print information after each selection event. |
| */ |
| public boolean m_traceSelection = false; |
| |
| /** |
| * Print information about a TracerEvent. |
| * |
| * @param ev the trace event. |
| */ |
| public void trace(TracerEvent ev) |
| { |
| |
| switch (ev.m_styleNode.getXSLToken()) |
| { |
| case Constants.ELEMNAME_TEXTLITERALRESULT : |
| if (m_traceElements) |
| { |
| m_pw.print("Line #" + ev.m_styleNode.getLineNumber() + ", " |
| + "Column #" + ev.m_styleNode.getColumnNumber() + " -- " |
| + ev.m_styleNode.getNodeName() + ": "); |
| |
| ElemTextLiteral etl = (ElemTextLiteral) ev.m_styleNode; |
| String chars = new String(etl.getChars(), 0, etl.getChars().length); |
| |
| m_pw.println(" " + chars.trim()); |
| } |
| break; |
| case Constants.ELEMNAME_TEMPLATE : |
| if (m_traceTemplates || m_traceElements) |
| { |
| ElemTemplate et = (ElemTemplate) ev.m_styleNode; |
| |
| m_pw.print("Line #" + et.getLineNumber() + ", " + "Column #" |
| + et.getColumnNumber() + ": " + et.getNodeName() + " "); |
| |
| if (null != et.getMatch()) |
| { |
| m_pw.print("match='" + et.getMatch().getPatternString() + "' "); |
| } |
| |
| if (null != et.getName()) |
| { |
| m_pw.print("name='" + et.getName() + "' "); |
| } |
| |
| m_pw.println(); |
| } |
| break; |
| default : |
| if (m_traceElements) |
| { |
| m_pw.println("Line #" + ev.m_styleNode.getLineNumber() + ", " |
| + "Column #" + ev.m_styleNode.getColumnNumber() + ": " |
| + ev.m_styleNode.getNodeName()); |
| } |
| } |
| } |
| |
| /** |
| * Method that is called just after a select attribute has been evaluated. |
| * |
| * @param ev the generate event. |
| * |
| * @throws javax.xml.transform.TransformerException |
| */ |
| public void selected(SelectionEvent ev) throws javax.xml.transform.TransformerException |
| { |
| |
| if (m_traceSelection) |
| { |
| ElemTemplateElement ete = (ElemTemplateElement) ev.m_styleNode; |
| |
| if (ev.m_styleNode.getLineNumber() == 0) |
| { |
| |
| // You may not have line numbers if the selection is occuring from a |
| // default template. |
| ElemTemplateElement parent = |
| (ElemTemplateElement) ete.getParentElem(); |
| |
| if (parent == ete.getStylesheetRoot().getDefaultRootRule()) |
| { |
| m_pw.print("(default root rule) "); |
| } |
| else if (parent == ete.getStylesheetRoot().getDefaultTextRule()) |
| { |
| m_pw.print("(default text rule) "); |
| } |
| else if (parent == ete.getStylesheetRoot().getDefaultRule()) |
| { |
| m_pw.print("(default rule) "); |
| } |
| |
| m_pw.print(ete.getNodeName() + ", " + ev.m_attributeName + "='" |
| + ev.m_xpath.getPatternString() + "': "); |
| } |
| else |
| { |
| m_pw.print("Line #" + ev.m_styleNode.getLineNumber() + ", " |
| + "Column #" + ev.m_styleNode.getColumnNumber() + ": " |
| + ete.getNodeName() + ", " + ev.m_attributeName + "='" |
| + ev.m_xpath.getPatternString() + "': "); |
| } |
| |
| if (ev.m_selection.getType() == ev.m_selection.CLASS_NODESET) |
| { |
| m_pw.println(); |
| // %DTBD% |
| // NodeIterator nl = ev.m_selection.nodeset(); |
| // if(nl instanceof ContextNodeList) |
| // { |
| // try |
| // { |
| // nl = ((ContextNodeList)nl).cloneWithReset(); |
| // } |
| // catch(CloneNotSupportedException cnse)S |
| // { |
| // m_pw.println(" [Can't trace nodelist because it it threw a CloneNotSupportedException]"); |
| // return; |
| // } |
| // Node pos = nl.nextNode(); |
| // |
| // if (null == pos) |
| // { |
| // m_pw.println(" [empty node list]"); |
| // } |
| // else |
| // { |
| // while (null != pos) |
| // { |
| // m_pw.println(" " + pos); |
| // |
| // pos = nl.nextNode(); |
| // } |
| // } |
| // } |
| // else |
| { |
| m_pw.println(" [Can't trace nodelist because it isn't a ContextNodeList]"); |
| } |
| } |
| else |
| { |
| m_pw.println(ev.m_selection.str()); |
| } |
| } |
| } |
| |
| /** |
| * Print information about a Generate event. |
| * |
| * @param ev the trace event. |
| */ |
| public void generated(GenerateEvent ev) |
| { |
| |
| if (m_traceGeneration) |
| { |
| switch (ev.m_eventtype) |
| { |
| case GenerateEvent.EVENTTYPE_STARTDOCUMENT : |
| m_pw.println("STARTDOCUMENT"); |
| break; |
| case GenerateEvent.EVENTTYPE_ENDDOCUMENT : |
| m_pw.println("ENDDOCUMENT"); |
| break; |
| case GenerateEvent.EVENTTYPE_STARTELEMENT : |
| m_pw.println("STARTELEMENT: " + ev.m_name); |
| break; |
| case GenerateEvent.EVENTTYPE_ENDELEMENT : |
| m_pw.println("ENDELEMENT: " + ev.m_name); |
| break; |
| case GenerateEvent.EVENTTYPE_CHARACTERS : |
| { |
| String chars = new String(ev.m_characters, ev.m_start, ev.m_length); |
| |
| m_pw.println("CHARACTERS: " + chars); |
| } |
| break; |
| case GenerateEvent.EVENTTYPE_CDATA : |
| { |
| String chars = new String(ev.m_characters, ev.m_start, ev.m_length); |
| |
| m_pw.println("CDATA: " + chars); |
| } |
| break; |
| case GenerateEvent.EVENTTYPE_COMMENT : |
| m_pw.println("COMMENT: " + ev.m_data); |
| break; |
| case GenerateEvent.EVENTTYPE_PI : |
| m_pw.println("PI: " + ev.m_name + ", " + ev.m_data); |
| break; |
| case GenerateEvent.EVENTTYPE_ENTITYREF : |
| m_pw.println("ENTITYREF: " + ev.m_name); |
| break; |
| case GenerateEvent.EVENTTYPE_IGNORABLEWHITESPACE : |
| m_pw.println("IGNORABLEWHITESPACE"); |
| break; |
| } |
| } |
| } |
| } |
