| 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 | } |