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/*******************************************************************************
* Copyright (c) 2000, 2015 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.core.internal.boot;
import java.io.IOException;
import java.net.URL;
import org.eclipse.core.internal.runtime.CommonMessages;
import org.eclipse.osgi.util.NLS;
/**
* Platform URL support
* platform:/base/ maps to platform installation location
*/
public class PlatformURLBaseConnection extends PlatformURLConnection {
// platform/ protocol
public static final String PLATFORM = "base"; //$NON-NLS-1$
public static final String PLATFORM_URL_STRING = PlatformURLHandler.PROTOCOL + PlatformURLHandler.PROTOCOL_SEPARATOR + "/" + PLATFORM + "/"; //$NON-NLS-1$ //$NON-NLS-2$
private static URL installURL;
/*
* Constructor for the class.
*/
public PlatformURLBaseConnection(URL url) {
super(url);
}
@Override
protected boolean allowCaching() {
return true;
}
@Override
protected URL resolve() throws IOException {
String spec = url.getFile().trim();
if (spec.startsWith("/")) //$NON-NLS-1$
spec = spec.substring(1);
if (!spec.startsWith(PLATFORM + "/")) { //$NON-NLS-1$
String message = NLS.bind(CommonMessages.url_badVariant, url);
throw new IOException(message);
}
return spec.length() == PLATFORM.length() + 1 ? installURL : new URL(installURL, spec.substring(PLATFORM.length() + 1));
}
public static void startup(URL url) {
// register connection type for platform:/base/ handling
if (installURL != null)
return;
installURL = url;
PlatformURLHandler.register(PLATFORM, PlatformURLBaseConnection.class);
}
}
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