| /******************************************************************************* |
| * Copyright (c) 2007 compeople AG 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: |
| * compeople AG (Stefan Liebig) - initial API and implementation |
| * IBM - continuing development |
| *******************************************************************************/ |
| package org.eclipse.equinox.p2.tests.artifact.repository.processing; |
| |
| import java.io.IOException; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.equinox.internal.p2.artifact.repository.Activator; |
| import org.eclipse.equinox.internal.provisional.p2.artifact.repository.IArtifactDescriptor; |
| import org.eclipse.equinox.internal.provisional.p2.artifact.repository.processing.ProcessingStep; |
| import org.eclipse.equinox.internal.provisional.p2.artifact.repository.processing.ProcessingStepDescriptor; |
| |
| public class ByteShifter extends ProcessingStep { |
| |
| protected int operand; |
| |
| public ByteShifter() { |
| super(); |
| } |
| |
| public ByteShifter(int shiftLeft) { |
| super(); |
| this.operand = shiftLeft; |
| basicInitialize(null); |
| } |
| |
| private void basicInitialize(ProcessingStepDescriptor descriptor) { |
| // if the status is already set to something that not ok, we've already found a problem. |
| if (!getStatus().isOK()) |
| return; |
| |
| int code; |
| // if there is a descriptor, decide if the "bad case" is an error or info. If no |
| // descriptor then default to error. |
| if (descriptor != null) |
| code = descriptor.isRequired() ? IStatus.ERROR : IStatus.INFO; |
| else |
| code = IStatus.ERROR; |
| |
| // finally, check the actual setup and set the status. |
| if (operand <= 0) |
| setStatus(new Status(code, Activator.ID, "ByteShifter operand invalid: " + operand)); |
| } |
| |
| public void initialize(ProcessingStepDescriptor descriptor, IArtifactDescriptor context) { |
| super.initialize(descriptor, context); |
| try { |
| operand = Integer.valueOf(descriptor.getData()).intValue(); |
| } catch (NumberFormatException e) { |
| int code = descriptor.isRequired() ? IStatus.ERROR : IStatus.INFO; |
| setStatus(new Status(code, Activator.ID, "ByteShifter operand specification invalid", e)); |
| return; |
| } |
| basicInitialize(descriptor); |
| } |
| |
| public void write(int b) throws IOException { |
| getDestination().write(b == -1 ? b : b << operand); |
| } |
| |
| public IStatus getStatus() { |
| return Status.OK_STATUS; |
| } |
| } |