org.eclipse.osgi.internal.connect.ConnectBundleFile Maven / Gradle / Ivy

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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based @AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step. This library is a superset of AspectJ weaver and hence also of AspectJ runtime.

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/*******************************************************************************
 * Copyright (c) 2019 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.osgi.internal.connect;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Collections;
import java.util.Map;
import java.util.Optional;
import org.eclipse.osgi.internal.debug.Debug;
import org.eclipse.osgi.storage.BundleInfo;
import org.eclipse.osgi.storage.bundlefile.BundleEntry;
import org.eclipse.osgi.storage.bundlefile.CloseableBundleFile;
import org.eclipse.osgi.storage.bundlefile.MRUBundleFileList;
import org.osgi.framework.connect.ConnectContent;
import org.osgi.framework.connect.ConnectContent.ConnectEntry;
import org.osgi.framework.connect.ConnectModule;

public class ConnectBundleFile extends CloseableBundleFile {
	public class ConnectBundleEntry extends BundleEntry {
		private final ConnectEntry connectEntry;

		public ConnectBundleEntry(ConnectEntry entry) {
			this.connectEntry = entry;
		}

		@Override
		public InputStream getInputStream() throws IOException {
			return ConnectBundleFile.this.getInputStream(connectEntry);
		}

		@Override
		public byte[] getBytes() throws IOException {
			return connectEntry.getBytes();
		}

		@Override
		public long getSize() {
			return connectEntry.getContentLength();
		}

		@Override
		public String getName() {
			return connectEntry.getName();
		}

		@Override
		public long getTime() {
			return connectEntry.getLastModified();
		}

		@Override
		public URL getFileURL() {
			File file = ConnectBundleFile.this.getFile(getName(), false);
			if (file != null) {
				try {
					return file.toURI().toURL();
				} catch (MalformedURLException e) {
					// should never happen
				}
			}
			return null;
		}

		@Override
		public URL getLocalURL() {
			return ConnectBundleFile.this.getClassLoader().map(cl -> cl.getResource(getName())).orElse(null);
		}
	}

	private final ConnectContent content;

	public ConnectBundleFile(ConnectModule module, File basefile, BundleInfo.Generation generation, MRUBundleFileList mruList, Debug debug) throws IOException {
		super(basefile, generation, mruList, debug);
		this.content = module.getContent();
	}

	@Override
	protected void doOpen() throws IOException {
		content.open();
	}

	@Override
	protected Iterable getPaths() {
		try {
			return content.getEntries();
		} catch (IOException e) {
			return Collections.emptyList();
		}
	}

	@Override
	protected BundleEntry findEntry(String path) {
		if (path.length() > 0 && path.charAt(0) == '/') {
			path = path.substring(1);
		}
		return content.getEntry(path).map(ConnectBundleEntry::new).orElse(null);
	}

	@Override
	protected void doClose() throws IOException {
		content.close();
	}

	@Override
	protected void postClose() {
		// do nothing
	}

	@Override
	protected InputStream doGetInputStream(ConnectEntry entry) throws IOException {
		return entry.getInputStream();
	}

	public Map getConnectHeaders() {
		if (!lockOpen()) {
			return null;
		}
		try {
			return content.getHeaders().orElse(null);
		} finally {
			releaseOpen();
		}
	}

	Optional getClassLoader() {
		return content.getClassLoader();
	}

	@Override
	public String toString() {
		return content.toString();
	}
}