/**
* Copyright (C) 2001-2017 by RapidMiner and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapidminer.com
*
* This program is free software: you can redistribute it and/or modify it under the terms of the
* GNU Affero General Public License as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License along with this program.
* If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.io.process;
import java.util.LinkedList;
import java.util.List;
import org.xml.sax.ErrorHandler;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
/**
* A simple error handler collecting all errors.
*
* @author Simon Fischer
*/
public class XMLErrorHandler implements ErrorHandler {
private final String sourceName;
private final List<SAXParseException> warnings = new LinkedList<SAXParseException>();
private final List<SAXParseException> errors = new LinkedList<SAXParseException>();
public XMLErrorHandler(String sourceName) {
this.sourceName = sourceName;
}
@Override
public void error(SAXParseException exception) throws SAXException {
errors.add(exception);
}
@Override
public void fatalError(SAXParseException exception) throws SAXException {
errors.add(exception);
throw exception;
}
@Override
public void warning(SAXParseException exception) throws SAXException {
warnings.add(exception);
}
private String toString(SAXParseException e) {
StringBuilder buf = new StringBuilder();
buf.append(sourceName);
buf.append(" (");
buf.append(e.getLineNumber());
buf.append(":");
buf.append(e.getColumnNumber());
buf.append(" at ");
buf.append(e.getPublicId());
buf.append(") ");
buf.append(e.getLocalizedMessage());
return buf.toString();
}
@Override
public String toString() {
StringBuilder b = new StringBuilder();
if (!errors.isEmpty()) {
b.append("Errors:\n");
for (SAXParseException e : errors) {
b.append(toString(e));
b.append("\n");
}
}
if (!warnings.isEmpty()) {
b.append("\nWarnings:\n");
for (SAXParseException e : warnings) {
b.append(toString(e));
b.append("\n");
}
}
return b.toString();
}
public boolean hasErrors() {
return !errors.isEmpty();
}
}