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/*******************************************************************************
* Copyright (c) 2004, 2009 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.osgi.storage.url;
import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import org.eclipse.osgi.internal.location.EclipseAdaptorMsg;
import org.eclipse.osgi.service.urlconversion.URLConverter;
import org.eclipse.osgi.util.NLS;
/**
* The service implementation that allows bundleresource or bundleentry
* URLs to be converted to native file URLs on the local file system.
*
* <p>Internal class.</p>
*/
public class BundleURLConverter implements URLConverter {
/* (non-Javadoc)
* @see org.eclipse.osgi.service.urlconversion.URLConverter#toFileURL(java.net.URL)
*/
public URL toFileURL(URL url) throws IOException {
URLConnection connection = url.openConnection();
if (connection instanceof BundleURLConnection) {
URL result = ((BundleURLConnection) connection).getFileURL();
/* If we got a connection then we know the resource exists in
* the bundle but if connection.getFileURL returned null then there
* was a problem extracting the file to disk. See bug 259241.
**/
if (result == null)
throw new IOException(NLS.bind(EclipseAdaptorMsg.ECLIPSE_PLUGIN_EXTRACTION_PROBLEM, url));
return result;
}
return url;
}
/* (non-Javadoc)
* @see org.eclipse.osgi.service.urlconversion.URLConverter#resolve(java.net.URL)
*/
public URL resolve(URL url) throws IOException {
URLConnection connection = url.openConnection();
if (connection instanceof BundleURLConnection)
return ((BundleURLConnection) connection).getLocalURL();
return url;
}
}
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