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/*******************************************************************************
* Copyright (c) 2013, 2017 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;
import java.io.*;
import java.net.URL;
import java.util.Enumeration;
import java.util.Map;
import org.eclipse.osgi.framework.util.CaseInsensitiveDictionaryMap;
import org.eclipse.osgi.storage.bundlefile.BundleEntry;
import org.eclipse.osgi.storage.bundlefile.BundleFile;
import org.eclipse.osgi.util.ManifestElement;
import org.osgi.framework.BundleException;
public class SystemBundleFile extends BundleFile {
public SystemBundleFile() {
super(null);
}
@Override
public File getFile(String path, boolean nativeCode) {
return null;
}
@Override
public BundleEntry getEntry(String path) {
if (BundleInfo.OSGI_BUNDLE_MANIFEST.equals(path)) {
return new BundleEntry() {
public InputStream getInputStream() throws IOException {
return getManifestURL().openStream();
}
public long getSize() {
return 0;
}
public String getName() {
return BundleInfo.OSGI_BUNDLE_MANIFEST;
}
public long getTime() {
return 0;
}
public URL getLocalURL() {
return getManifestURL();
}
public URL getFileURL() {
return null;
}
};
}
return null;
}
@Override
public Enumeration<String> getEntryPaths(String path, boolean recurse) {
return null;
}
@Override
public void close() throws IOException {
// nothing
}
@Override
public void open() throws IOException {
// nothing
}
@Override
public boolean containsDir(String dir) {
return false;
}
URL getManifestURL() {
ClassLoader cl = getClass().getClassLoader();
try {
// get all manifests in your classloader delegation
Enumeration<URL> manifests = cl != null ? cl.getResources(BundleInfo.OSGI_BUNDLE_MANIFEST) : ClassLoader.getSystemResources(BundleInfo.OSGI_BUNDLE_MANIFEST);
while (manifests.hasMoreElements()) {
URL url = manifests.nextElement();
try {
// check each manifest until we find one with the Eclipse-SystemBundle: true header
Map<String, String> headers = ManifestElement.parseBundleManifest(url.openStream(), new CaseInsensitiveDictionaryMap<String, String>());
if ("true".equals(headers.get(Storage.ECLIPSE_SYSTEMBUNDLE))) //$NON-NLS-1$
return url;
} catch (BundleException e) {
// ignore and continue to next URL
}
}
} catch (IOException e) {
// ignore and return null
}
return null;
}
}
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