org.eclipse.osgi.storage.bundlefile.ZipBundleEntry 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) 2005, 2018 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
 *     Rob Harrop - SpringSource Inc. (bug 253942)
 *******************************************************************************/
package org.eclipse.osgi.storage.bundlefile;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.zip.ZipEntry;

/**
 * A BundleEntry represented by a ZipEntry in a ZipFile.  The ZipBundleEntry
 * class is used for bundles that are installed as a ZipFile on a file system.
 */
public class ZipBundleEntry extends BundleEntry {
	/**
	 * ZipEntry for this entry.
	 */
	protected final ZipEntry zipEntry;

	/**
	 * The BundleFile for this entry.
	 */
	protected final ZipBundleFile bundleFile;

	/**
	 * Constructs the BundleEntry using a ZipEntry.
	 * @param bundleFile BundleFile object this entry is a member of
	 * @param zipEntry ZipEntry object of this entry
	 */
	ZipBundleEntry(ZipEntry zipEntry, ZipBundleFile bundleFile) {
		this.zipEntry = zipEntry;
		this.bundleFile = bundleFile;
	}

	/**
	 * Return an InputStream for the entry.
	 *
	 * @return InputStream for the entry
	 * @exception java.io.IOException
	 */
	@Override
	public InputStream getInputStream() throws IOException {
		return bundleFile.getInputStream(zipEntry);
	}

	/**
	 * Return size of the uncompressed entry.
	 *
	 * @return size of entry
	 */
	@Override
	public long getSize() {
		return zipEntry.getSize();
	}

	/**
	 * Return name of the entry.
	 *
	 * @return name of entry
	 */
	@Override
	public String getName() {
		return zipEntry.getName();
	}

	/**
	 * Get the modification time for this BundleEntry.
	 * If the modification time has not been set,
	 * this method will return -1.
	 *
	 * @return last modification time.
	 */
	@Override
	public long getTime() {
		return zipEntry.getTime();
	}

	@SuppressWarnings("deprecation")
	@Override
	public URL getLocalURL() {
		try {
			return new URL("jar:" + bundleFile.basefile.toURL() + "!/" + zipEntry.getName()); //$NON-NLS-1$//$NON-NLS-2$
		} catch (MalformedURLException e) {
			//This can not happen.
			return null;
		}
	}

	@SuppressWarnings("deprecation")
	@Override
	public URL getFileURL() {
		try {
			File file = bundleFile.getFile(zipEntry.getName(), false);
			if (file != null)
				return file.toURL();
		} catch (MalformedURLException e) {
			//This can not happen.
		}
		return null;
	}
}