/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* 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.acting;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Map;
import org.apache.avalon.framework.parameters.Parameters;
import org.apache.avalon.framework.service.ServiceException;
import org.apache.avalon.framework.service.ServiceManager;
import org.apache.avalon.framework.thread.ThreadSafe;
import org.apache.cocoon.components.source.impl.PartSource;
import org.apache.cocoon.environment.Redirector;
import org.apache.excalibur.source.ModifiableSource;
import org.apache.excalibur.source.Source;
import org.apache.excalibur.source.SourceResolver;
import org.apache.excalibur.source.TraversableSource;
/**
* The CopySourceAction copies the content of it's "src" attribute to its "dest" parameter.
* The destination must of course resolve to a <code>WriteableSource</code>
* <p>
* Example :
* <pre>
* <map:act type="copy-source" src="cocoon://pipeline.xml">
* <map:parameter name="dest" value="context://WEB-INF/data/file.xml"/>
* .../...
* </map:act>
*</pre>
*
* @author <a href="http://www.apache.org/~sylvain/">Sylvain Wallez</a>
* @version CVS $Id: CopySourceAction.java,v 1.3 2004/03/05 13:02:43 bdelacretaz Exp $
*/
public class CopySourceAction extends ServiceableAction implements ThreadSafe
{
private SourceResolver resolver;
public void service(ServiceManager manager) throws ServiceException {
super.service(manager);
this.resolver = (SourceResolver)manager.lookup(SourceResolver.ROLE);
}
public Map act(Redirector redirector, org.apache.cocoon.environment.SourceResolver oldResolver, Map objectModel, String source, Parameters par)
throws Exception {
// Get source and destination Sources
Source src = resolver.resolveURI(source);
Source dest = resolver.resolveURI(par.getParameter("dest"));
// Check that dest is writeable
if (! (dest instanceof ModifiableSource)) {
throw new IllegalArgumentException("Non-writeable URI : " + dest.getURI());
}
if (dest instanceof TraversableSource) {
TraversableSource trDest = (TraversableSource) dest;
if (trDest.isCollection()) {
if (src instanceof TraversableSource) {
dest = trDest.getChild(((TraversableSource)src).getName());
} else if (src instanceof PartSource){
// FIXME : quick hack to store "upload://xxx" sources into directories
// it would be better for the PartSource to be Traversable, or to
// create a new "NamedSource" interface
dest = trDest.getChild(((PartSource)src).getPart().getFileName());
}
}
}
ModifiableSource wdest = (ModifiableSource)dest;
// Get streams
InputStream is = src.getInputStream();
OutputStream os = wdest.getOutputStream();
// And transfer all content.
try {
byte[] buffer = new byte[1024];
int len;
while ((len = is.read(buffer, 0, buffer.length)) > 0) {
os.write(buffer, 0, len);
}
os.close();
} catch(Exception e) {
if (wdest.canCancel(os)) {
wdest.cancel(os);
}
} finally {
is.close();
}
// Success !
return EMPTY_MAP;
}
}