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1 package com.thaiopensource.validate.schematron;
2
3 import org.xml.sax.helpers.DefaultHandler  ;
4 import org.xml.sax.ErrorHandler ;
5 import org.xml.sax.SAXParseException ;
6 import org.xml.sax.SAXException ;
7 import org.xml.sax.Attributes ;
8 import com.thaiopensource.util.Localizer;
9
10 class OutputHandler extends DefaultHandler {
11 private final ErrorHandler eh;
12 private int lineNumber = -1;
13 private String systemId = null;
14 private final StringBuffer message = new StringBuffer ();
15 private boolean inMessage = false;
16 private final String lineSeparator;
17 private static final String indent = " ";
18 private final Localizer localizer = new Localizer(OutputHandler.class);
19
20 OutputHandler(ErrorHandler eh) {
21 this.eh = eh;
22 this.lineSeparator = System.getProperty("line.separator");
23 }
24
25 public void characters(char ch[], int start, int length)
26 throws SAXException {
27 if (inMessage) {
28 for (int i = 0; i < length; i++) {
29 char c = ch[start + i];
30 switch (c) {
31 case ' ':
32 case '\r':
33 case '\n':
34 case '\t':
35 if (message.length() == 0 || message.charAt(message.length() - 1) != ' ')
36 message.append(' ');
37 break;
38 default:
39 message.append(c);
40 break;
41 }
42 }
43 }
44 }
45
46 public void ignorableWhitespace(char ch[], int start, int length)
47 throws SAXException {
48 characters(ch, start, length);
49 }
50
51 public void startElement(String uri, String localName,
52 String qName, Attributes attributes)
53 throws SAXException {
54 if (localName.equals("failed-assertion")
55 || localName.equals("report")) {
56 String value = attributes.getValue("", "line-number");
57 if (value == null)
58 lineNumber = -1;
59 else {
60 try {
61 lineNumber = Integer.parseInt(value);
62 }
63 catch (NumberFormatException e) {
64 lineNumber = -1;
65 }
66 }
67 value = attributes.getValue("", "system-id");
68 if (value != null && value.equals(""))
69 value = null;
70 systemId = value;
71 message.append(localizer.message(localName.equals("failed-assertion")
72 ? "failed_assertion"
73 : "report"));
74 }
75 else if (localName.equals("statement") || localName.equals("diagnostic")) {
76 inMessage = true;
77 message.append(lineSeparator);
78 message.append(indent);
79 }
80 }
81
82 public void endElement(String uri, String localName, String qName)
83 throws SAXException {
84 if (localName.equals("statement") || localName.equals("diagnostic")) {
85 if (message.length() > 0 && message.charAt(message.length() - 1) == ' ')
86 message.setLength(message.length() - 1);
87 inMessage = false;
88 }
89 else if (localName.equals("failed-assertion")
90 || localName.equals("report")) {
91 eh.error(new SAXParseException (message.toString(), null, systemId, lineNumber, -1));
92 message.setLength(0);
93 }
94 }
95 }
96 |
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