| /******************************************************************************* |
| * Copyright (c) 2004, 2013 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.storage.url; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URL; |
| import java.net.URLConnection; |
| import org.eclipse.osgi.internal.messages.Msg; |
| import org.eclipse.osgi.storage.bundlefile.BundleEntry; |
| import org.eclipse.osgi.util.NLS; |
| |
| /** |
| * URLConnection for BundleClassLoader resources. |
| */ |
| |
| public class BundleURLConnection extends URLConnection { |
| /** BundleEntry that the URL is associated. */ |
| protected final BundleEntry bundleEntry; |
| |
| /** InputStream for this URLConnection. */ |
| protected InputStream in; |
| |
| /** content type for this URLConnection */ |
| protected String contentType; |
| |
| /** |
| * Constructor for a BundleClassLoader resource URLConnection. |
| * |
| * @param url URL for this URLConnection. |
| * @param bundleEntry BundleEntry that the URLConnection is associated. |
| */ |
| public BundleURLConnection(URL url, BundleEntry bundleEntry) { |
| super(url); |
| |
| this.bundleEntry = bundleEntry; |
| this.in = null; |
| this.contentType = null; |
| } |
| |
| @Override |
| public synchronized void connect() throws IOException { |
| if (!connected) { |
| if (bundleEntry != null) { |
| in = bundleEntry.getInputStream(); |
| connected = true; |
| } else { |
| throw new IOException(NLS.bind(Msg.RESOURCE_NOT_FOUND_EXCEPTION, url)); |
| } |
| } |
| } |
| |
| @Override |
| public long getContentLengthLong() { |
| return bundleEntry.getSize(); |
| } |
| |
| @Override |
| public String getContentType() { |
| if (contentType == null) { |
| contentType = guessContentTypeFromName(bundleEntry.getName()); |
| |
| if (contentType == null) { |
| if (!connected) { |
| try { |
| connect(); |
| } catch (IOException e) { |
| return (null); |
| } |
| } |
| try { |
| if (in.markSupported()) |
| contentType = guessContentTypeFromStream(in); |
| } catch (IOException e) { |
| // do nothing |
| } |
| } |
| } |
| |
| return (contentType); |
| } |
| |
| @Override |
| public boolean getDoInput() { |
| return (true); |
| } |
| |
| @Override |
| public boolean getDoOutput() { |
| return (false); |
| } |
| |
| @Override |
| public InputStream getInputStream() throws IOException { |
| if (!connected) { |
| connect(); |
| } |
| |
| return (in); |
| } |
| |
| @Override |
| public long getLastModified() { |
| long lastModified = bundleEntry.getTime(); |
| |
| if (lastModified == -1) { |
| return (0); |
| } |
| |
| return (lastModified); |
| } |
| |
| /** |
| * Converts the URL to a common local URL protocol (i.e file: or jar: protocol) |
| * @return the local URL using a common local protocol |
| */ |
| public URL getLocalURL() { |
| return bundleEntry.getLocalURL(); |
| } |
| |
| /** |
| * Converts the URL to a URL that uses the file: protocol. The content of this |
| * URL may be downloaded or extracted onto the local filesystem to create a file URL. |
| * @return the local URL that uses the file: protocol |
| */ |
| public URL getFileURL() { |
| return bundleEntry.getFileURL(); |
| } |
| } |