unused/xml/sax/demo/ByteStreamDemo.java

   1 package org.xml.sax.demo;
   2 // SAX demonstration for parsing from a raw byte stream.
   3 // No warranty; no copyright -- use this as you will.
   4 // $Id: ByteStreamDemo.java,v 1.4 1998/05/01 20:38:19 david Exp $
   5
   6 import org.xml.sax.Parser;
   7 import org.xml.sax.InputSource;
   8 import org.xml.sax.SAXException;
   9
  10 import org.xml.sax.helpers.ParserFactory;
  11
  12 import java.io.FileInputStream;
  13
  14
  15
  16 /**
  17   * Demonstrate parsing from a byte stream.
  18   *
  19   * <p>Usage: java -Dorg.xml.sax.parser=<var>CLASSNAME</var> ByteStreamDemo
  20   * <var>FILE</var></p>
  21   *
  22   * <p>The SAX parser will open a byte stream to the file name
  23   * provided.  Note the use of the InputStreamAdapter class to allow a
  24   * Java InputStream to serve as a SAX ByteStream.</p>
  25   *
  26   * @see DemoHandler
  27   */
  28 public class ByteStreamDemo {
  29
  30
  31   /**
  32     * Main entry point.
  33     */
  34   public static void main (String args[])
  35     throws Exception
  36   {
  37     Parser parser;
  38     InputSource source;
  39     DemoHandler handler;
  40     FileInputStream input;
  41
  42                                 // First, check the command-line usage.
  43     if (args.length != 1) {
  44       System.err.println("Usage: java -Dorg.xml.sax.parser=<classname> " +
  45                          "SystemIdDemo <document>");
  46       System.exit(2);
  47     }
  48
  49                                 // Allocate a SAX Parser object, using
  50                                 // the class name provided in the
  51                                 // org.xml.sax.parser property.
  52     parser = ParserFactory.makeParser();
  53
  54                                 // Allocate an event handler, and register
  55                                 // it with the SAX parser for all four
  56                                 // types of events (we could use a
  57                                 // separate object for each).
  58     handler = new DemoHandler();
  59     parser.setEntityResolver(handler);
  60     parser.setDTDHandler(handler);
  61     parser.setDocumentHandler(handler);
  62     parser.setErrorHandler(handler);
  63
  64                                 // Create a Java FileInputStream from
  65                                 // the file: note that SAX cannot
  66                                 // use this directly.
  67     input = new FileInputStream(args[0]);
  68
  69                                 // Create the input source.
  70     source = new InputSource(input);
  71     source.setSystemId(args[0]);
  72
  73                                 // Parse the document from the
  74                                 // ByteStream.
  75     parser.parse(source);
  76   }
  77
  78 }