+++ /dev/null
-package org.xml.sax.demo;
-
-// SAX event handler for demos.
-// No warranty; no copyright -- use this as you will.
-// $Id: DemoHandler.java,v 1.3 1998/05/01 20:45:16 david Exp $
-
-import org.xml.sax.HandlerBase;
-import org.xml.sax.InputSource;
-import org.xml.sax.Locator;
-import org.xml.sax.AttributeList;
-import org.xml.sax.EntityResolver;
-import org.xml.sax.DTDHandler;
-import org.xml.sax.DocumentHandler;
-import org.xml.sax.ErrorHandler;
-import org.xml.sax.SAXParseException;
-
-
-/**
- * Event handler class for SAX demos.
- *
- * <p>This handler simply reports all of the events that it receives.
- * It is useful for testing and comparing SAX implementations, and
- * for teaching or learning about SAX. This is also a demonstration
- * of how one class can implement all four handler interfaces.</p>
- *
- * @see org.xml.sax.EntityResolver
- * @see org.xml.sax.DTDHandler
- * @see org.xml.sax.DocumentHandler
- * @see org.xml.sax.ErrorHandler
- */
-public class DemoHandler
- implements EntityResolver, DTDHandler, DocumentHandler, ErrorHandler
-{
-
-
-\f
- //////////////////////////////////////////////////////////////////////
- // Implementation of org.xml.sax.EntityResolver
- //////////////////////////////////////////////////////////////////////
-
-
- /**
- * Display requests for entity resolution.
- *
- * <p>The SAX parser will invoke this method to give the application
- * a chance to resolve entities. This implementation always
- * returns null, so that the parser will resolve the entity
- * itself.</p>
- *
- * @see org.xml.sax.EntityResolver#resolveEntity
- */
- @Override
- public InputSource resolveEntity (String publicId, String systemId)
- {
- System.out.print("Resolve entity:");
- if (publicId != null) {
- System.out.print(" publicId=\"" + publicId + '"');
- }
- System.out.println(" systemId=\"" + systemId + '"');
-
- return null;
- }
-
-
-\f
- //////////////////////////////////////////////////////////////////////
- // Implementation of org.xml.sax.DTDHandler
- //////////////////////////////////////////////////////////////////////
-
-
- /**
- * Display notation declarations as they are reported.
- *
- * @see org.xml.sax.DTDHandler#notationDecl
- */
- @Override
- public void notationDecl (String name, String publicId, String systemId)
- {
- System.out.print("Notation declaration: " + name);
- if (publicId != null) {
- System.out.print(" publicId=\"" + publicId + '"');
- }
- if (systemId != null) {
- System.out.print(" systemId=\"" + systemId + '"');
- }
- System.out.print('\n');
- }
-
-
- /**
- * Display unparsed entity declarations as they are reported.
- *
- * @see org.xml.sax.DTDHandler#unparsedEntityDecl
- */
- @Override
- public void unparsedEntityDecl (String name,
- String publicId,
- String systemId,
- String notationName)
- {
- System.out.print("Unparsed Entity Declaration: " + name);
- if (publicId != null) {
- System.out.print(" publicId=\"" + publicId + '"');
- }
- if (systemId != null) {
- System.out.print(" systemId=\"" + systemId + '"');
- }
- System.out.println(" notationName=\"" + notationName + '"');
- }
-
-
-\f
- //////////////////////////////////////////////////////////////////////
- // Implementation of org.xml.sax.DocumentHandler
- //////////////////////////////////////////////////////////////////////
-
-
- /**
- * Print a message when the parser provides a locator.
- *
- * <p>Not all SAX parsers will provide a locator object.</p>
- *
- * @see org.xml.sax.DocumentHandler#setDocumentLocator
- */
- @Override
- public void setDocumentLocator (Locator locator)
- {
- System.out.println("Document locator supplied.");
- }
-
-
- /**
- * Print a message at the start of the document.
- *
- * @see org.xml.sax.DocumentHandler#startDocument
- */
- @Override
- public void startDocument ()
- {
- System.out.println("Start document");
- }
-
-
- /**
- * Print a message for the end of the document.
- *
- * @see org.xml.sax.DocumentHandler#endDocument
- */
- @Override
- public void endDocument ()
- {
- System.out.println("End document");
- }
-
-
- /**
- * Print a message for the start of an element.
- *
- * <p>Display all attributes on separate lines, indented.</p>
- *
- * @see org.xml.sax.DocumentHandler#startElement
- */
- @Override
- public void startElement (String name, AttributeList attributes)
- {
- System.out.println("Start element: " + name);
- for (int i = 0; i < attributes.getLength(); i++) {
- System.out.println(" Attribute: " +
- attributes.getName(i) +
- ' ' +
- attributes.getType(i) +
- " \"" +
- attributes.getValue(i) +
- '"');
- }
- }
-
-
- /**
- * Print a message for the end of an element.
- *
- * @see org.xml.sax.DocumentHandler#endElement
- */
- @Override
- public void endElement (String name)
- {
- System.out.println("End element: " + name);
- }
-
-
- /**
- * Print a message for character data.
- *
- * @see org.xml.sax.DocumentHandler#characters
- */
- @Override
- public void characters (char ch[], int start, int length)
- {
- System.out.print("Characters: ");
- display(ch, start, length);
- }
-
-
- /**
- * Print a message for ignorable whitespace.
- *
- * @see org.xml.sax.DocumentHandler#ignorableWhitespace
- */
- @Override
- public void ignorableWhitespace (char ch[], int start, int length)
- {
- System.out.print("Ignorable Whitespace: ");
- display(ch, start, length);
- }
-
-
- /**
- * Print a message for a processing instruction.
- *
- * @see org.xml.sax.DocumentHandler#processingInstruction
- */
- @Override
- public void processingInstruction (String target, String data)
- {
- System.out.println("Processing instruction: " + target + ' ' + data);
- }
-
-
-\f
- //////////////////////////////////////////////////////////////////////
- // Implementation of org.xml.sax.ErrorHandler
- //////////////////////////////////////////////////////////////////////
-
-
- /**
- * Report all warnings, and continue parsing.
- *
- * @see org.xml.sax.ErrorHandler#warning
- */
- @Override
- public void warning (SAXParseException exception)
- {
- System.out.println("Warning: " +
- exception.getMessage() +
- " (" +
- exception.getSystemId() +
- ':' +
- exception.getLineNumber() +
- ',' +
- exception.getColumnNumber() +
- ')');
- }
-
-
- /**
- * Report all recoverable errors, and try to continue parsing.
- *
- * @see org.xml.sax.ErrorHandler#error
- */
- @Override
- public void error (SAXParseException exception)
- {
- System.out.println("Recoverable Error: " +
- exception.getMessage() +
- " (" +
- exception.getSystemId() +
- ':' +
- exception.getLineNumber() +
- ',' +
- exception.getColumnNumber() +
- ')');
- }
-
-
- /**
- * Report all fatal errors, and try to continue parsing.
- *
- * <p>Note: results are no longer reliable once a fatal error has
- * been reported.</p>
- *
- * @see org.xml.sax.ErrorHandler#fatalError
- */
- @Override
- public void fatalError (SAXParseException exception)
- {
- System.out.println("Fatal Error: " +
- exception.getMessage() +
- " (" +
- exception.getSystemId() +
- ':' +
- exception.getLineNumber() +
- ',' +
- exception.getColumnNumber() +
- ')');
- }
-
-
-\f
- //////////////////////////////////////////////////////////////////////
- // Utility routines.
- //////////////////////////////////////////////////////////////////////
-
-
- /**
- * Display text, escaping some characters.
- */
- private static void display (char ch[], int start, int length)
- {
- for (int i = start; i < start + length; i++) {
- switch (ch[i]) {
- case '\n':
- System.out.print("\\n");
- break;
- case '\t':
- System.out.print("\\t");
- break;
- default:
- System.out.print(ch[i]);
- break;
- }
- }
- System.out.print("\n");
- }
-
-}
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