| /******************************************************************************* |
| * Copyright (c) 2005, 2015 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 |
| *******************************************************************************/ |
| package org.eclipse.core.tools.resources.metadata; |
| |
| import java.io.*; |
| import org.eclipse.core.internal.utils.UniversalUniqueIdentifier; |
| import org.eclipse.core.tools.metadata.AbstractDumper; |
| import org.eclipse.core.tools.metadata.DumpException; |
| |
| public class HistoryIndexDumper extends AbstractDumper { |
| |
| private final static int LONG_LENGTH = 8; |
| |
| private final static int UUID_LENGTH = UniversalUniqueIdentifier.BYTES_SIZE; |
| |
| public final static int DATA_LENGTH = UUID_LENGTH + LONG_LENGTH; |
| |
| private static long getTimestamp(byte[] state) { |
| long timestamp = 0; |
| for (int j = 0; j < LONG_LENGTH; j++) |
| timestamp += (state[UUID_LENGTH + j] & 0xFFL) << j * 8; |
| return timestamp; |
| } |
| |
| @Override |
| protected void dumpContents(PushbackInputStream input, StringBuilder contents) throws IOException, Exception, DumpException { |
| DataInputStream source = new DataInputStream(input); |
| int version = source.readByte(); |
| contents.append("version: "); |
| contents.append(version); |
| contents.append('\n'); |
| int entryCount = source.readInt(); |
| contents.append("entries: "); |
| contents.append(entryCount); |
| contents.append('\n'); |
| // data holds a UUID (16 bytes) + timestamp (long - 8 bytes) |
| byte[] data = new byte[24]; |
| for (int i = 0; i < entryCount; i++) { |
| contents.append("Path: "); |
| contents.append(source.readUTF()); |
| int stateCount = source.readUnsignedShort(); |
| contents.append('\n'); |
| contents.append("State count: "); |
| contents.append(stateCount); |
| contents.append("\n"); |
| for (int j = 0; j < stateCount; j++) { |
| int read; |
| if ((read = source.read(data)) < data.length) |
| throw new DumpException("Data incomplete. Read " + read + " byte(s)"); |
| contents.append('\t'); |
| contents.append("UUID: "); |
| contents.append(new UniversalUniqueIdentifier(data)); |
| contents.append(" | timestamp: "); |
| contents.append(getTimestamp(data)); |
| contents.append('\n'); |
| } |
| } |
| |
| } |
| } |