001/*
002 *  Copyright 2010 Anyware Services
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.ametys.cms.content.consistency;
017
018import java.io.IOException;
019
020import org.apache.cocoon.ProcessingException;
021import org.apache.cocoon.ResourceNotFoundException;
022import org.apache.cocoon.xml.XMLUtils;
023import org.xml.sax.SAXException;
024
025import org.ametys.core.cocoon.RuntimeFileGenerator;
026
027
028/**
029 * FileGenerator which accepts a non existing or not readable file.
030 * In that case, it generates an <file-not-readable/> tag.
031 */
032public class TolerantFileGenerator extends RuntimeFileGenerator
033{
034    @Override
035    public void generate() throws IOException, SAXException, ProcessingException
036    {
037        try
038        {
039            super.generate();
040        }
041        catch (ResourceNotFoundException e)
042        {
043            // File does not exist
044            contentHandler.startDocument();
045            XMLUtils.createElement(contentHandler, "file-not-found");
046            contentHandler.endDocument();
047        }
048        catch (ProcessingException e)
049        {
050            // If there was a problem reading the file, generate an empty tag.
051            contentHandler.startDocument();
052            XMLUtils.createElement(contentHandler, "file-not-readable");
053            contentHandler.endDocument();
054        }
055    }
056}