cvs commit: xml-cocoon2/src/java/org/apache/cocoon/xml LoggingContentHandler.java

[vgritsenko]

vgritsenko    02/02/01 19:18:04

  Added:       src/java/org/apache/cocoon/xml LoggingContentHandler.java
  Log:
  logging cohtent handler to debug SAX streams
  
  Revision  Changes    Path
  1.1                  
xml-cocoon2/src/java/org/apache/cocoon/xml/LoggingContentHandler.java
  
  Index: LoggingContentHandler.java
  ===================================================================
  /*****************************************************************************
   * Copyright (C) The Apache Software Foundation. All rights reserved.        *
   * ------------------------------------------------------------------------- *
   * This software is published under the terms of the Apache Software License *
   * version 1.1, a copy of which has been included  with this distribution in *
   * the LICENSE file.                                                         *
   *****************************************************************************/
  package org.apache.cocoon.xml;
  
  import org.apache.avalon.excalibur.pool.Poolable;
  import org.apache.avalon.framework.parameters.Parameters;
  import org.apache.avalon.framework.logger.AbstractLoggable;
  import org.apache.cocoon.ProcessingException;
  import org.apache.cocoon.environment.SourceResolver;
  import org.xml.sax.Attributes;
  import org.xml.sax.Locator;
  import org.xml.sax.SAXException;
  import org.xml.sax.XMLFilter;
  import org.xml.sax.ContentHandler;
  
  import java.io.FileWriter;
  import java.io.IOException;
  import java.util.Date;
  import java.util.Map;
  
  /**
   * Logging content handler logs all events going through to the logger.
   *
   * @author <a href="mailto:[EMAIL PROTECTED]>Vadim Gritsenko</a>
   * @version $Revision: 1.1 $ $Date: 2002/02/02 03:18:04 $
   */
  public class LoggingContentHandler extends AbstractLoggable implements 
ContentHandler {
  
      /**
       * All debug messages from this handler are prefixed with this id.
       */
      String id;
  
      /** The current <code>ContentHandler</code>. */
      ContentHandler contentHandler;
  
      /**
       * Creates new <code>LoggingContentHandler</code> with specified
       * <code>id</code> and destination <code>contentHandler</code>.
       */
      public LoggingContentHandler(String id, ContentHandler contentHandler) {
          this.id = id;
          this.contentHandler = contentHandler;
      }
  
      public void setDocumentLocator(Locator locator) {
          log("setDocumentLocator", "");
          contentHandler.setDocumentLocator(locator);
      }
  
      public void startDocument() throws SAXException {
          log("startDocument", "");
          this.contentHandler.startDocument();
      }
  
      public void endDocument() throws SAXException {
          log ("endDocument", "");
          this.contentHandler.endDocument();
      }
  
      public void startPrefixMapping(String prefix, String uri) throws SAXException {
          log ("startPrefixMapping", "prefix="+prefix+",uri="+uri);
          this.contentHandler.startPrefixMapping(prefix,uri);
      }
  
      public void endPrefixMapping(String prefix) throws SAXException {
          log ("endPrefixMapping", "prefix="+prefix);
          this.contentHandler.endPrefixMapping(prefix);
      }
  
      public void startElement(String uri, String loc, String raw, Attributes a)
      throws SAXException {
          log ("startElement", "uri="+uri+",local="+loc+",raw="+raw);
          for (int i = 0; i < a.getLength(); i++) {
              log ("            ", Integer.toString(i + 1)
                   + ". uri=" + a.getURI(i)
                   + ",local=" + a.getLocalName(i)
                   + ",qname=" + a.getQName(i)
                   + ",type=" + a.getType(i)
                   + ",value=" + a.getValue(i));
          }
          this.contentHandler.startElement(uri,loc,raw,a);
      }
  
  
      public void endElement(String uri, String loc, String qname) throws SAXException 
{
          log ("endElement", "uri="+uri+",local="+loc+",qname="+qname);
          this.contentHandler.endElement(uri,loc,qname);
      }
  
      public void characters(char ch[], int start, int len) throws SAXException {
          log ("characters", new String(ch,start,len));
          this.contentHandler.characters(ch,start,len);
      }
  
      public void ignorableWhitespace(char ch[], int start, int len) throws 
SAXException {
          log ("ignorableWhitespace", new String(ch,start,len));
          this.contentHandler.ignorableWhitespace(ch,start,len);
      }
  
      public void processingInstruction(String target, String data) throws 
SAXException {
          log ("processingInstruction", "target="+target+",data="+data);
          this.contentHandler.processingInstruction(target,data);
      }
  
      public void skippedEntity(String name) throws SAXException {
          log ("skippedEntity", "name="+name);
          this.contentHandler.skippedEntity(name);
      }
  
      private void log(String location, String description) {
          StringBuffer logEntry = new StringBuffer();
          logEntry.append(id);
          logEntry.append("[");
          logEntry.append(location);
          logEntry.append("] ");
          logEntry.append(description);
          logEntry.append("\n");
          getLogger().debug(logEntry.toString());
          // System.out.print(logEntry.toString());
      }
  }
  
  
  

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