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root/i-scream/experimental/server/XMLReader/XMLPacketMaker.java

Comparing experimental/server/XMLReader/XMLPacketMaker.java (file contents):
Revision 1.2 by pjm2, Tue Nov 14 09:18:20 2000 UTC vs.
Revision 1.14 by pjm2, Fri Nov 17 14:49:13 2000 UTC

#	Line 1 | Line 1
1	<	import java.io.*;
2	<
3	<	import org.xml.sax.*;
4	<
5	<	import javax.xml.parsers.SAXParserFactory;
6	<	import javax.xml.parsers.ParserConfigurationException;
7	<	import javax.xml.parsers.SAXParser;
8	<
9	<
10	<	public class XMLPacketMaker extends HandlerBase
11	<	{
12	<	public static void main (String argv [])
13	<	{
14	<	if (argv.length != 1) {
15	<	System.err.println ("Usage: cmd filename.xml");
16	<	System.exit (1);
17	<	}
18	<
19	<	// Use the default (non-validating) parser
20	<	SAXParserFactory factory = SAXParserFactory.newInstance();
21	<	try {
22	<	// Set up output stream
23	<	out = new OutputStreamWriter (System.out, "UTF8");
24	<
25	<	// Parse the input
26	<	SAXParser saxParser = factory.newSAXParser();
27	<	saxParser.parse( new File(argv [0]), new XMLPacketMaker() );
28	<
29	<	} catch (Throwable t) {
30	<	t.printStackTrace ();
31	<	}
32	<	System.exit (0);
33	<	}
34	<
35	<	static private Writer  out;
36	<	private String indentString = "    "; // Amount to indent
37	<	private int indentLevel = 0;
38	<
39	<
40	<	//===========================================================
41	<	// SAX DocumentHandler methods
42	<	//===========================================================
43	<
44	<	public void startDocument ()
45	<	throws SAXException
46	<	{
47	<	nl();
48	<	//nl();
49	<	emit ("START DOCUMENT");
50	<	nl();
51	<	//emit ("<?xml version='1.0' encoding='UTF-8'?>");
52	<	}
53	<
54	<	public void endDocument ()
55	<	throws SAXException
56	<	{
57	<	nl(); emit ("END DOCUMENT");
58	<	try {
59	<	nl();
60	<	out.flush ();
61	<	} catch (IOException e) {
62	<	throw new SAXException ("I/O error", e);
63	<	}
64	<	}
65	<
66	<	public void startElement (String name, AttributeList attrs)
67	<	throws SAXException
68	<	{
69	<	indentLevel++;
70	<	//nl(); emit ("ELEMENT: ");
71	<	//emit ("<"+name);
72	<	if (attrs != null) {
73	<	for (int i = 0; i < attrs.getLength (); i++) {
74	<	nl();
75	<	emit("   ATTR: ");
76	<	emit (attrs.getName (i));
77	<	emit ("\t\"");
78	<	emit (attrs.getValue (i));
79	<	emit ("\"");
80	<	}
81	<	}
82	<	//if (attrs.getLength() > 0) nl();
83	<	//emit (">");
84	<	}
85	<
86	<	public void endElement (String name)
87	<	throws SAXException
88	<	{
89	<	//nl();
90	<	//emit ("END_ELM: ");
91	<	//emit ("</"+name+">");
92	<	indentLevel--;
93	<	}
94	<
95	<	public void characters (char buf [], int offset, int len) throws SAXException {
96	<	nl(); emit ("Value:   ");
97	<	String s = new String(buf, offset, len);
98	<	if (!s.trim().equals("")) emit (s);
99	<	}
100	<
101	<	//===========================================================
102	<	// Helpers ...
103	<	//===========================================================
104	<
105	<	// Wrap I/O exceptions in SAX exceptions, to
106	<	// suit handler signature requirements
107	<	private void emit (String s) throws SAXException {
108	<	try {
109	<	out.write (s);
110	<	out.flush ();
111	<	} catch (IOException e) {
112	<	throw new SAXException ("I/O error", e);
113	<	}
114	<	}
115	<
116	<	// Start a new line
117	<	// and indent the next line appropriately
118	<	private void nl () throws SAXException {
119	<	String lineEnd =  System.getProperty("line.separator");
120	<	try {
121	<	out.write (lineEnd);
122	<	for (int i=0; i < indentLevel; i++) out.write(indentString);
123	<	} catch (IOException e) {
124	<	throw new SAXException ("I/O error", e);
125	<	}
126	<	}
127	<	}
1	>	import java.io.*;
2	>	import java.util.ArrayList;
3	>
4	>	import org.xml.sax.*;
5	>
6	>	import javax.xml.parsers.SAXParserFactory;
7	>	import javax.xml.parsers.ParserConfigurationException;
8	>	import javax.xml.parsers.SAXParser;
9	>
10	>	// Paul Mutton, pjm2@ukc.ac.uk
11	>
12	>	// XMLPacketMaker - Creates an XMLPacket object.
13	>	public class XMLPacketMaker extends HandlerBase {
14	>
15	>	// No-args constructor.  Generally not used.
16	>	public XMLPacketMaker () {
17	>	this.xml = "<packet></packet>";
18	>	}
19	>
20	>	// Constructor for accepting XML input.
21	>	public XMLPacketMaker (String xml) {
22	>	this.xml = xml;
23	>	}
24	>
25	>	public XMLPacket createXMLPacket() {
26	>
27	>	// Create the XMLPacket to store values in.
28	>	XMLPacket packet = new XMLPacket();
29	>
30	>	// Use the default (non-validating) parser
31	>	SAXParserFactory factory = SAXParserFactory.newInstance();
32	>	try {
33	>
34	>	// Parse the input
35	>	InputSource inputSource = new InputSource(new StringReader(xml));
36	>	SAXParser saxParser = factory.newSAXParser();
37	>	saxParser.parse(inputSource, new XMLPacketParser(packet));
38	>
39	>	}
40	>	catch (Exception e) {
41	>	System.out.println("XMLPacketMaker - I just received an XML packet that did not contain valid XML.");
42	>	//t.printStackTrace();
43	>	return null;
44	>	}
45	>
46	>	return packet;
47	>	}
48	>
49	>	String xml;
50	>	}

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