org.eclipse.linuxtools.tmf.tests/stubs/org/eclipse/linuxtools/tmf/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.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.event.TmfEvent;
  21 import org.eclipse.linuxtools.tmf.event.TmfEventContent;
  22 import org.eclipse.linuxtools.tmf.event.TmfEventReference;
  23 import org.eclipse.linuxtools.tmf.event.TmfEventSource;
  24 import org.eclipse.linuxtools.tmf.event.TmfEventType;
  25 import org.eclipse.linuxtools.tmf.event.TmfTimestamp;
  26 import org.eclipse.linuxtools.tmf.parser.ITmfEventParser;
  27
  28 /**
  29  * <b><u>TmfEventParserStub</u></b>
  30  * <p>
  31  * TODO: Implement me. Please.
  32  */
  33 @SuppressWarnings("nls")
  34 public class TmfEventParserStub implements ITmfEventParser {
  35
  36     // ------------------------------------------------------------------------
  37     // Attributes
  38     // ------------------------------------------------------------------------
  39
  40         private final int NB_TYPES = 10;
  41     private final TmfEventType[] fTypes;
  42
  43     // ------------------------------------------------------------------------
  44     // Constructors
  45     // ------------------------------------------------------------------------
  46
  47     public TmfEventParserStub() {
  48         fTypes = new TmfEventType[NB_TYPES];
  49         for (int i = 0; i < NB_TYPES; i++) {
  50                 Vector<String> format = new Vector<String>();
  51                 for (int j = 1; j <= i; j++) {
  52                         format.add(new String("Fmt-" + i + "-Fld-" + j));
  53                 }
  54                 String[] fields = new String[i];
  55                 fTypes[i] = new TmfEventType("Type-" + i, format.toArray(fields));
  56         }
  57     }
  58
  59     // ------------------------------------------------------------------------
  60     // Operators
  61     // ------------------------------------------------------------------------
  62
  63     static final String typePrefix = "Type-";
  64     @Override
  65         @SuppressWarnings("unchecked")
  66         public TmfEvent parseNextEvent(ITmfTrace eventStream, TmfContext context) throws IOException {
  67
  68         if (! (eventStream instanceof TmfTraceStub)) {
  69             return null;
  70         }
  71
  72         // Highly inefficient...
  73         RandomAccessFile stream = ((TmfTraceStub) eventStream).getStream();
  74         String name = eventStream.getName();
  75         name = name.substring(name.lastIndexOf('/') + 1);
  76
  77         // no need to use synchronized since it's already cover by the calling method
  78
  79         long location = 0;
  80         if (context != null)
  81             location = ((TmfLocation<Long>) (context.getLocation())).getLocation();
  82         stream.seek(location);
  83
  84         try {
  85             long ts        = stream.readLong();
  86             String source  = stream.readUTF();
  87             String type    = stream.readUTF();
  88             @SuppressWarnings("unused")
  89             int reference  = stream.readInt();
  90             int typeIndex  = Integer.parseInt(type.substring(typePrefix.length()));
  91             String[] fields = new String[typeIndex];
  92             for (int i = 0; i < typeIndex; i++) {
  93                 fields[i] = stream.readUTF();
  94             }
  95
  96             String content = "[";
  97             if (typeIndex > 0) {
  98                 content += fields[0];
  99             }
 100             for (int i = 1; i < typeIndex; i++) {
 101                 content += ", " + fields[i];
 102             }
 103             content += "]";
 104
 105             TmfEvent event = new TmfEvent(
 106                     new TmfTimestamp(ts, (byte) -3, 0),     // millisecs
 107                     new TmfEventSource(source),
 108                     fTypes[typeIndex],
 109                     new TmfEventReference(name));
 110             TmfEventContent cnt = new TmfEventContent(event, content);
 111             event.setContent(cnt);
 112             return event;
 113         } catch (EOFException e) {
 114         }
 115         return null;
 116     }
 117
 118 }