| /******************************************************************************* |
| * Copyright (c) 2013 Tasktop Technologies and others. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * https://www.eclipse.org/legal/epl-2.0 |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Tasktop Technologies - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.mylyn.commons.repositories.http.core; |
| |
| import java.io.FilterInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.OperationCanceledException; |
| |
| /** |
| * @author Steffen Pingel |
| */ |
| class CancellableInputStream extends FilterInputStream { |
| |
| private volatile boolean cancelled; |
| |
| private final CommonHttpResponse response; |
| |
| public CancellableInputStream(CommonHttpResponse response, InputStream in) { |
| super(in); |
| Assert.isNotNull(response); |
| this.response = response; |
| } |
| |
| @Override |
| public int available() throws IOException { |
| checkCancelled(); |
| try { |
| return super.available(); |
| } catch (IOException e) { |
| checkCancelled(); |
| throw e; |
| } |
| } |
| |
| @Override |
| public void close() throws IOException { |
| response.notifyStreamClosed(); |
| super.close(); |
| } |
| |
| void closeWithoutNotification() throws IOException { |
| super.close(); |
| } |
| |
| @Override |
| public int read() throws IOException { |
| checkCancelled(); |
| try { |
| return super.read(); |
| } catch (IOException e) { |
| checkCancelled(); |
| throw e; |
| } |
| } |
| |
| @Override |
| public int read(byte[] b, int off, int len) throws IOException { |
| checkCancelled(); |
| try { |
| return super.read(b, off, len); |
| } catch (IOException e) { |
| checkCancelled(); |
| throw e; |
| } |
| } |
| |
| private void checkCancelled() { |
| if (cancelled) { |
| throw new OperationCanceledException(); |
| } |
| } |
| |
| void cancel() { |
| cancelled = true; |
| } |
| |
| } |