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

Comparing experimental/server/XMLReader/XMLPacketMaker.java (file contents):
Revision 1.8 by pjm2, Tue Nov 14 12:23:17 2000 UTC vs.
Revision 1.10 by pjm2, Fri Nov 17 11:07:32 2000 UTC

#	Line 12 | Line 12 | import javax.xml.parsers.SAXParser;
12		// XMLPacketMaker - Creates an XMLPacket object.
13		public class XMLPacketMaker extends HandlerBase {
14
15	+	// No-args constructor.  Generally not used.
16		public XMLPacketMaker () {
17	<	// default no-args constructor.
17	>	this.xml = "<packet></packet>";
18		}
19
20	<	// Constructor for accepting a reference to an XMLPacket
21	<	public XMLPacketMaker (XMLPacket packet) {
22	<	this.packet = packet;
20	>	// Constructor for accepting XML input.
21	>	public XMLPacketMaker (String xml) {
22	>	this.xml = xml;
23		}
24
25	<	public static void main(String[] args){
25	<	if (args.length != 1) {
26	<	System.err.println ("Usage: cmd filename");
27	<	System.exit (1);
28	<	}
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	–	// Set up output stream
34	–	out = new OutputStreamWriter (System.out, "UTF8");
33
36	–	// Create the XMLPacket to store values in.
37	–	packet = new XMLPacket();
38	–
34		// Parse the input
35		SAXParser saxParser = factory.newSAXParser();
36	<	saxParser.parse(new File(args[0]), new XMLPacketMaker(packet));
36	>	saxParser.parse(xml, new XMLPacketParser(packet));
37
38		// Print out the entire contents of the packet's HashMap.
39		System.out.println("XMLPacket contents: -");
40		packet.printAll();
41
47	–	} catch (Throwable t) {
48	–	t.printStackTrace ();
42		}
43	<	System.exit (0);
44	<	}
45	<
53	<	static private Writer out;
54	<	private String indentString = "    "; // Amount to indent
55	<	private int indentLevel = 0;
56	<
57	<	// For storing the tag heirarchy.
58	<	private ArrayList tagList = new ArrayList();
59	<	static private XMLPacket packet = null;
60	<
61	<	//===========================================================
62	<	// SAX DocumentHandler methods
63	<	//===========================================================
64	<
65	<	public void startDocument () throws SAXException {
66	<	// No purpose currently.
67	<	}
68	<
69	<	public void endDocument () throws SAXException {
70	<	// No purpose currently.
71	<	}
72	<
73	<	// Add each tag's attribute to the XMLPacket.
74	<	// Note that all attributes within an opening tag are
75	<	// stored as "someroot.sometag.attributes.attribute_name"
76	<	// E.g. If <packet> is the root node, then:
77	<	//     <packet machine_name="raptor">
78	<	// is stored as:
79	<	//     "packet.attributes.machine_name"
80	<	// within the XMLPacket.
81	<	public void startElement (String name, AttributeList attrs) throws SAXException {
82	<	indentLevel++;
83	<	tagList.add(name);
84	<	if (attrs != null) {
85	<	for (int i = 0; i < attrs.getLength (); i++) {
86	<	packet.addParam(getPath()+".attributes."+attrs.getName(i), attrs.getValue(i));
87	<	}
43	>	catch (Throwable t) {
44	>	System.out.println("The recieved packet did not contain valid XML, so I'm gonna reject it.");
45	>	//t.printStackTrace ();
46		}
47	+
48	+	return packet;
49		}
90	–
91	–	// When an XML element is finished with, we must remove
92	–	// the tag name from the tagList and decrement the indent
93	–	// level.
94	–	public void endElement (String name) throws SAXException {
95	–	tagList.remove(tagList.size()-1);
96	–	indentLevel--;
97	–	}
98	–
99	–	// Any text falling within a pair of terminal tags must
100	–	// be added to the XMLPacket.  Trim leading and trailing
101	–	// spaces and do not bother to add if there is no data
102	–	// specified within the tags.
103	–	public void characters (char[] buf, int offset, int len) throws SAXException {
104	–	String s = new String(buf, offset, len);
105	–	if (!s.trim().equals("")) {
106	–	packet.addParam(getPath(), s);
107	–	}
108	–	}
109	–
110	–
111	–	//===========================================================
112	–	// Helpers ...
113	–	//===========================================================
50
51	<
116	<	// Return the heirarchical string to be used as a key value
117	<	// in the XMLPacket.
118	<	private String getPath () {
119	<	String path = (String)tagList.get(0);
120	<	if (tagList.size() > 0) {
121	<	for (int i = 1 ; i < tagList.size() ; i++) {
122	<	path = path + "." + (String)tagList.get(i);
123	<	}
124	<	}
125	<	return path;
126	<	}
127	<
51	>	String xml;
52		}

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