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1 package com.thaiopensource.xml.sax;
2
3 import java.util.ResourceBundle  ;
4 import java.text.MessageFormat ;
5 import java.io.PrintWriter ;
6 import java.io.Writer ;
7 import java.io.OutputStream ;
8 import java.io.FileNotFoundException ;
9
10 import org.xml.sax.ErrorHandler ;
11 import org.xml.sax.SAXParseException ;
12 import org.xml.sax.SAXException ;
13 import com.thaiopensource.util.UriOrFile;
14
15 public class ErrorHandlerImpl implements ErrorHandler {
16 private final PrintWriter err;
17
18 private final String bundleName
19 = "com.thaiopensource.xml.sax.resources.Messages";
20
21 private ResourceBundle bundle = null;
22
23 public ErrorHandlerImpl() {
24 this(System.err);
25 }
26
27 public ErrorHandlerImpl(OutputStream os) {
28 this.err = new PrintWriter (os);
29 }
30
31 public ErrorHandlerImpl(Writer w) {
32 this.err = new PrintWriter (w);
33 }
34
35 public void close() {
36 err.close();
37 }
38
39 private String getString(String key) {
40 if (bundle == null)
41 bundle = ResourceBundle.getBundle(bundleName);
42 return bundle.getString(key);
43 }
44
45 private String format(String key, Object [] args) {
46 return MessageFormat.format(getString(key), args);
47 }
48
49 public void warning(SAXParseException e) throws SAXParseException {
50 print(format("warning",
51 new Object [] { formatMessage(e), formatLocation(e) }));
52 }
53
54 public void error(SAXParseException e) {
55 print(format("error",
56 new Object [] { formatMessage(e), formatLocation(e) }));
57 }
58
59 public void fatalError(SAXParseException e) throws SAXParseException {
60 throw e;
61 }
62
63 public void printException(Throwable e) {
64 String loc;
65 if (e instanceof SAXParseException )
66 loc = formatLocation((SAXParseException )e);
67 else
68 loc = "";
69 String message;
70 if (e instanceof SAXException )
71 message = formatMessage((SAXException )e);
72 else
73 message = formatMessage(e);
74 print(format("fatal", new Object [] { message, loc }));
75 }
76
77 public void print(String message) {
78 if (message.length() != 0) {
79 err.println(message);
80 err.flush();
81 }
82 }
83
84 private String formatLocation(SAXParseException e) {
85 String systemId = e.getSystemId();
86 int n = e.getLineNumber();
87 Integer lineNumber = n >= 0 ? new Integer (n) : null;
88 n = e.getColumnNumber();
89 Integer columnNumber = n >= 0 ? new Integer (n) : null;
90 if (systemId != null) {
91 systemId = UriOrFile.uriToUriOrFile(systemId);
92 if (lineNumber != null) {
93 if (columnNumber != null)
94 return format("locator_system_id_line_number_column_number",
95 new Object [] { systemId, lineNumber, columnNumber });
96 else
97 return format("locator_system_id_line_number",
98 new Object [] { systemId, lineNumber });
99 }
100 else
101 return format("locator_system_id",
102 new Object [] { systemId });
103 }
104 else if (lineNumber != null) {
105 if (columnNumber != null)
106 return format("locator_line_number_column_number",
107 new Object [] { lineNumber, columnNumber });
108 else
109 return format("locator_line_number",
110 new Object [] { lineNumber });
111 }
112 else
113 return "";
114 }
115
116 private String formatMessage(SAXException se) {
117 Exception e = se.getException();
118 String detail = se.getMessage();
119 if (e != null) {
120 String detail2 = e.getMessage();
121 if (detail2 == detail || e.getClass().getName().equals(detail))
123 return formatMessage(e);
124 else if (detail2 == null)
125 return format("exception",
126 new Object []{ e.getClass().getName(), detail });
127 else
128 return format("tunnel_exception",
129 new Object [] { e.getClass().getName(),
130 detail,
131 detail2 });
132 }
133 else {
134 if (detail == null)
135 detail = getString("no_detail");
136 return detail;
137 }
138 }
139
140 private String formatMessage(Throwable e) {
141 String detail = e.getMessage();
142 if (detail == null)
143 detail = getString("no_detail");
144 if (e instanceof FileNotFoundException )
145 return format("file_not_found", new Object [] { detail });
146 return format("exception",
147 new Object [] { e.getClass().getName(), detail });
148 }
149 }
150 |
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