| /******************************************************************************* |
| * Copyright (c) 2005, 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 |
| * Rob Harrop - SpringSource Inc. (bug 253942) |
| *******************************************************************************/ |
| package org.eclipse.osgi.baseadaptor.bundlefile; |
| |
| import java.io.*; |
| 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. |
| * @since 3.2 |
| */ |
| 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 |
| */ |
| public InputStream getInputStream() throws IOException { |
| ZipBundleFile zipBundleFile = bundleFile; |
| |
| if (!zipBundleFile.isMruEnabled()) |
| return bundleFile.getZipFile().getInputStream(zipEntry); |
| |
| zipBundleFile.incrementReference(); |
| InputStream result = null; |
| try { |
| return result = new ZipBundleEntryInputStream(zipBundleFile.getZipFile().getInputStream(zipEntry)); |
| } finally { |
| if (result == null) |
| // an exception occurred; decrement the reference |
| zipBundleFile.decrementReference(); |
| } |
| } |
| |
| /** |
| * Return size of the uncompressed entry. |
| * |
| * @return size of entry |
| */ |
| public long getSize() { |
| return zipEntry.getSize(); |
| } |
| |
| /** |
| * Return name of the entry. |
| * |
| * @return name of entry |
| */ |
| public String getName() { |
| return zipEntry.getName(); |
| } |
| |
| /** |
| * Get the modification time for this BundleEntry. |
| * <p>If the modification time has not been set, |
| * this method will return <tt>-1</tt>. |
| * |
| * @return last modification time. |
| */ |
| public long getTime() { |
| return zipEntry.getTime(); |
| } |
| |
| 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; |
| } |
| } |
| |
| 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; |
| } |
| |
| private class ZipBundleEntryInputStream extends InputStream { |
| private final InputStream stream; |
| private boolean closed = false; |
| |
| public ZipBundleEntryInputStream(InputStream stream) { |
| this.stream = stream; |
| } |
| |
| public int available() throws IOException { |
| return stream.available(); |
| } |
| |
| public void close() throws IOException { |
| try { |
| stream.close(); |
| } finally { |
| synchronized (this) { |
| if (closed) |
| return; |
| closed = true; |
| } |
| bundleFile.decrementReference(); |
| } |
| } |
| |
| public void mark(int var0) { |
| stream.mark(var0); |
| } |
| |
| public boolean markSupported() { |
| return stream.markSupported(); |
| } |
| |
| public int read() throws IOException { |
| return stream.read(); |
| } |
| |
| public int read(byte[] var0, int var1, int var2) throws IOException { |
| return stream.read(var0, var1, var2); |
| } |
| |
| public int read(byte[] var0) throws IOException { |
| return stream.read(var0); |
| } |
| |
| public void reset() throws IOException { |
| stream.reset(); |
| } |
| |
| public long skip(long var0) throws IOException { |
| return stream.skip(var0); |
| } |
| } |
| } |