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root/i-scream/experimental/server/XMLReader/XMLPacketMaker.java
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Comparing experimental/server/XMLReader/XMLPacketMaker.java (file contents):
Revision 1.2 by pjm2, Tue Nov 14 09:18:20 2000 UTC vs.
Revision 1.11 by pjm2, Fri Nov 17 12:16:39 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 >            SAXParser saxParser = factory.newSAXParser();
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 >
42 >        }
43 >        catch (Exception e) {
44 >            System.out.println("XMLPacketMaker - I just received an XML packet that did not contain valid XML.");
45 >            System.out.println(e);
46 >            return null;
47 >        }
48 >        
49 >        return packet;
50 >    }
51 >    
52 >    String xml;
53 > }

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