1 | /* This file is part of the project "Hilbert II" - http://www.qedeq.org |
2 | * |
3 | * Copyright 2000-2014, Michael Meyling <mime@qedeq.org>. |
4 | * |
5 | * "Hilbert II" is free software; you can redistribute |
6 | * it and/or modify it under the terms of the GNU General Public |
7 | * License as published by the Free Software Foundation; either |
8 | * version 2 of the License, or (at your option) any later version. |
9 | * |
10 | * This program is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | * GNU General Public License for more details. |
14 | */ |
15 | |
16 | package org.qedeq.kernel.xml.parser; |
17 | |
18 | import org.qedeq.base.io.SourceArea; |
19 | import org.qedeq.base.io.SourcePosition; |
20 | import org.qedeq.base.trace.Trace; |
21 | import org.qedeq.kernel.se.common.ModuleService; |
22 | import org.qedeq.kernel.se.common.SourceFileException; |
23 | import org.qedeq.kernel.se.common.SourceFileExceptionList; |
24 | import org.xml.sax.ErrorHandler; |
25 | import org.xml.sax.SAXException; |
26 | import org.xml.sax.SAXParseException; |
27 | |
28 | |
29 | /** |
30 | * Error handler for XML parsing. |
31 | * |
32 | * @author Michael Meyling |
33 | */ |
34 | public class SaxErrorHandler implements ErrorHandler { |
35 | |
36 | /** This class. */ |
37 | private static final Class CLASS = SaxErrorHandler.class; |
38 | |
39 | /** Error code for Exceptions thrown by the SAXParser. */ |
40 | public static final int SAX_PARSER_EXCEPTION = 9001; |
41 | |
42 | /** This plugin is currently working. */ |
43 | private final ModuleService plugin; |
44 | |
45 | /** File that is parsed. */ |
46 | private final String url; |
47 | |
48 | /** Collects errors. */ |
49 | private final SourceFileExceptionList list; |
50 | |
51 | /** |
52 | * Constructor. |
53 | * |
54 | * @param plugin This plugin generated the error. |
55 | * @param url URL that is parsed. |
56 | * @param list Collector for the SAX exceptions. |
57 | */ |
58 | public SaxErrorHandler(final ModuleService plugin, final String url, |
59 | final SourceFileExceptionList list) { |
60 | super(); |
61 | Trace.param(CLASS, this, "SaxErrorHandler", "url", url); |
62 | this.plugin = plugin; |
63 | this.url = url; |
64 | this.list = list; |
65 | } |
66 | |
67 | /* (non-Javadoc) |
68 | * @see org.xml.sax.ErrorHandler#warning(org.xml.sax.SAXParseException) |
69 | */ |
70 | public final void warning(final SAXParseException e) throws SAXException { |
71 | final SourceFileException sf = new SourceFileException(plugin, SAX_PARSER_EXCEPTION, e.getMessage(), |
72 | e, new SourceArea(url, new SourcePosition(e.getLineNumber(), 1), |
73 | new SourcePosition(e.getLineNumber(), e.getColumnNumber())), null); |
74 | Trace.trace(CLASS, this, "warning", e); |
75 | Trace.trace(CLASS, this, "warning", sf); |
76 | list.add(sf); |
77 | } |
78 | |
79 | /* (non-Javadoc) |
80 | * @see org.xml.sax.ErrorHandler#error(org.xml.sax.SAXParseException) |
81 | */ |
82 | public final void error(final SAXParseException e) throws SAXException { |
83 | final SourceFileException sf = new SourceFileException(plugin, SAX_PARSER_EXCEPTION, e.getMessage(), |
84 | e, new SourceArea(url, new SourcePosition(e.getLineNumber(), 1), |
85 | new SourcePosition(e.getLineNumber(), e.getColumnNumber())), null); |
86 | Trace.trace(CLASS, this, "error", e); |
87 | Trace.trace(CLASS, this, "error", sf); |
88 | list.add(sf); |
89 | } |
90 | |
91 | /* (non-Javadoc) |
92 | * @see org.xml.sax.ErrorHandler#fatalError(org.xml.sax.SAXParseException) |
93 | */ |
94 | public final void fatalError(final SAXParseException e) throws SAXException { |
95 | final SourceFileException sf = new SourceFileException(plugin, SAX_PARSER_EXCEPTION, e.getMessage(), |
96 | e, new SourceArea(url, new SourcePosition(e.getLineNumber(), 1), |
97 | new SourcePosition(e.getLineNumber(), e.getColumnNumber())), null); |
98 | Trace.trace(CLASS, this, "fatalError", e); |
99 | Trace.trace(CLASS, this, "fatalError", sf); |
100 | list.add(sf); |
101 | } |
102 | |
103 | } |