/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.myfaces.shared_tomahawk.util.xml;

import org.apache.commons.logging.Log;
import org.xml.sax.ErrorHandler;
import org.xml.sax.SAXParseException;

/**
 * Convenient error handler for xml sax parsing.
 * @author Manfred Geiler (latest modification by $Author: grantsmith $)
 * @version $Revision: 472630 $ $Date: 2006-11-08 15:40:03 -0500 (Wed, 08 Nov 2006) $
 */
public class MyFacesErrorHandler
        implements ErrorHandler
{
    private Log _log;

    public MyFacesErrorHandler(Log log)
    {
        _log = log;
    }

    public void warning(SAXParseException exception)
    {
        if (_log.isWarnEnabled()) _log.warn(getMessage(exception), exception);
    }

    public void error(SAXParseException exception)
    {
        _log.error(getMessage(exception), exception);
    }

    public void fatalError(SAXParseException exception)
    {
        _log.fatal(getMessage(exception), exception);
    }

    private String getMessage(SAXParseException exception)
    {
        StringBuffer buf = new StringBuffer();
        buf.append("SAXParseException at");
        buf.append(" URI=");
        buf.append(exception.getSystemId());
        buf.append(" Line=");
        buf.append(exception.getLineNumber());
        buf.append(" Column=");
        buf.append(exception.getColumnNumber());
        return buf.toString();
    }

}
