org.eclipse.linuxtools.tmf.core.tests/stubs/org/eclipse/linuxtools/tmf/stubs/trace/TmfEventParserStub.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Francois Chouinard - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.stubs.trace;
  14
  15 import java.io.EOFException;
  16 import java.io.IOException;
  17 import java.io.RandomAccessFile;
  18 import java.util.Vector;
  19
  20 import org.eclipse.linuxtools.tmf.core.event.TmfEvent;
  21 import org.eclipse.linuxtools.tmf.core.event.TmfEventContent;
  22 import org.eclipse.linuxtools.tmf.core.event.TmfEventReference;
  23 import org.eclipse.linuxtools.tmf.core.event.TmfEventSource;
  24 import org.eclipse.linuxtools.tmf.core.event.TmfEventType;
  25 import org.eclipse.linuxtools.tmf.core.event.TmfTimestamp;
  26 import org.eclipse.linuxtools.tmf.core.parser.ITmfEventParser;
  27 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  28 import org.eclipse.linuxtools.tmf.core.trace.TmfContext;
  29 import org.eclipse.linuxtools.tmf.core.trace.TmfLocation;
  30
  31 /**
  32  * <b><u>TmfEventParserStub</u></b>
  33  * <p>
  34  * TODO: Implement me. Please.
  35  */
  36 @SuppressWarnings("nls")
  37 public class TmfEventParserStub implements ITmfEventParser {
  38
  39     // ------------------------------------------------------------------------
  40     // Attributes
  41     // ------------------------------------------------------------------------
  42
  43         private final int NB_TYPES = 10;
  44     private final TmfEventType[] fTypes;
  45
  46     // ------------------------------------------------------------------------
  47     // Constructors
  48     // ------------------------------------------------------------------------
  49
  50     public TmfEventParserStub() {
  51         fTypes = new TmfEventType[NB_TYPES];
  52         for (int i = 0; i < NB_TYPES; i++) {
  53                 Vector<String> format = new Vector<String>();
  54                 for (int j = 1; j <= i; j++) {
  55                         format.add(new String("Fmt-" + i + "-Fld-" + j));
  56                 }
  57                 String[] fields = new String[i];
  58                 fTypes[i] = new TmfEventType("Type-" + i, format.toArray(fields));
  59         }
  60     }
  61
  62     // ------------------------------------------------------------------------
  63     // Operators
  64     // ------------------------------------------------------------------------
  65
  66     static final String typePrefix = "Type-";
  67     @Override
  68         @SuppressWarnings("unchecked")
  69         public TmfEvent parseNextEvent(ITmfTrace eventStream, TmfContext context) throws IOException {
  70
  71         if (! (eventStream instanceof TmfTraceStub)) {
  72             return null;
  73         }
  74
  75         // Highly inefficient...
  76         RandomAccessFile stream = ((TmfTraceStub) eventStream).getStream();
  77         String name = eventStream.getName();
  78         name = name.substring(name.lastIndexOf('/') + 1);
  79
  80         // no need to use synchronized since it's already cover by the calling method
  81
  82         long location = 0;
  83         if (context != null)
  84             location = ((TmfLocation<Long>) (context.getLocation())).getLocation();
  85         stream.seek(location);
  86
  87         try {
  88             long ts        = stream.readLong();
  89             String source  = stream.readUTF();
  90             String type    = stream.readUTF();
  91             @SuppressWarnings("unused")
  92             int reference  = stream.readInt();
  93             int typeIndex  = Integer.parseInt(type.substring(typePrefix.length()));
  94             String[] fields = new String[typeIndex];
  95             for (int i = 0; i < typeIndex; i++) {
  96                 fields[i] = stream.readUTF();
  97             }
  98
  99             String content = "[";
 100             if (typeIndex > 0) {
 101                 content += fields[0];
 102             }
 103             for (int i = 1; i < typeIndex; i++) {
 104                 content += ", " + fields[i];
 105             }
 106             content += "]";
 107
 108             TmfEvent event = new TmfEvent(
 109                     new TmfTimestamp(ts, (byte) -3, 0),     // millisecs
 110                     new TmfEventSource(source),
 111                     fTypes[typeIndex],
 112                     new TmfEventReference(name));
 113             TmfEventContent cnt = new TmfEventContent(event, content);
 114             event.setContent(cnt);
 115             return event;
 116         } catch (EOFException e) {
 117         }
 118         return null;
 119     }
 120
 121 }