/*
* Copyright 2004 Outerthought bvba and Schaubroeck nv
*
* Licensed 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.cocoon.forms.datatype.convertor;
import org.apache.cocoon.forms.datatype.convertor.ConvertorBuilder;
import org.apache.cocoon.forms.datatype.convertor.Convertor;
import org.apache.cocoon.forms.util.DomHelper;
import org.apache.cocoon.forms.CacheManager;
import org.apache.cocoon.components.source.SourceUtil;
import org.apache.avalon.framework.service.Serviceable;
import org.apache.avalon.framework.service.ServiceManager;
import org.apache.avalon.framework.service.ServiceException;
import org.apache.excalibur.source.SourceResolver;
import org.apache.excalibur.source.Source;
import org.w3c.dom.Element;
import org.outerj.daisy.htmlcleaner.HtmlCleanerTemplate;
import org.outerj.daisy.htmlcleaner.HtmlCleanerFactory;
import org.xml.sax.InputSource;
/**
* Builds {@link HtmlCleaningConvertor}s.
*/
public class HtmlCleaningConvertorBuilder implements ConvertorBuilder, Serviceable {
private ServiceManager serviceManager;
public void service(ServiceManager serviceManager) throws ServiceException {
this.serviceManager = serviceManager;
}
public Convertor build(Element element) throws Exception {
String config = DomHelper.getAttribute(element, "config");
Source source = null;
SourceResolver sourceResolver = null;
CacheManager cacheManager = null;
try {
cacheManager = (CacheManager)serviceManager.lookup(CacheManager.ROLE);
sourceResolver = (SourceResolver)serviceManager.lookup(SourceResolver.ROLE);
source = sourceResolver.resolveURI(config);
String prefix = HtmlCleanerTemplate.class.getName();
HtmlCleanerTemplate template = (HtmlCleanerTemplate)cacheManager.get(source, prefix);
if (template == null) {
HtmlCleanerFactory factory = new HtmlCleanerFactory();
InputSource is = SourceUtil.getInputSource(source);
template = factory.buildTemplate(is);
cacheManager.set(template, source, prefix);
}
return new HtmlCleaningConvertor(template);
} finally {
if (source != null)
sourceResolver.release(source);
if (sourceResolver != null)
serviceManager.release(sourceResolver);
if (cacheManager != null)
serviceManager.release(cacheManager);
}
}
}