/*******************************************************************************
* Copyright (c) 2000, 2005 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.internal.resources;
import java.io.DataInputStream;
import java.io.IOException;
import java.util.*;
import org.eclipse.core.internal.utils.Messages;
import org.eclipse.core.resources.IResourceStatus;
import org.eclipse.core.runtime.*;
//
/**
* Snapshot the markers for the specified resource to the given output stream.
*/
public class MarkerSnapshotReader_1 extends MarkerSnapshotReader {
// type constants
public static final byte INDEX= 1;
public static final byte QNAME= 2;
// marker attribute types
public static final byte ATTRIBUTE_NULL= 0;
public static final byte ATTRIBUTE_BOOLEAN= 1;
public static final byte ATTRIBUTE_INTEGER= 2;
public static final byte ATTRIBUTE_STRING= 3;
public MarkerSnapshotReader_1(Workspace workspace) {
super(workspace);
}
/**
* SNAP_FILE -> [VERSION_ID RESOURCE]* VERSION_ID -> int (used for backwards compatibiliy)
* RESOURCE -> RESOURCE_PATH MARKER_SIZE MARKER+ RESOURCE_PATH -> String MARKER_SIZE -> int
* MARKER -> MARKER_ID TYPE ATTRIBUTES_SIZE ATTRIBUTE* MARKER_ID -> long TYPE -> INDEX | QNAME
* INDEX -> byte int QNAME -> byte String ATTRIBUTES_SIZE -> short ATTRIBUTE -> ATTRIBUTE_KEY
* ATTRIBUTE_VALUE ATTRIBUTE_KEY -> String ATTRIBUTE_VALUE -> BOOLEAN_VALUE | INTEGER_VALUE |
* STRING_VALUE | NULL_VALUE BOOLEAN_VALUE -> byte boolean INTEGER_VALUE -> byte int
* STRING_VALUE -> byte String NULL_VALUE -> byte
*/
public void read(DataInputStream input) throws IOException, CoreException {
IPath path= new Path(input.readUTF());
int markersSize= input.readInt();
MarkerSet markers= new MarkerSet(markersSize);
ArrayList readTypes= new ArrayList();
for (int i= 0; i < markersSize; i++)
markers.add(readMarkerInfo(input, readTypes));
// we've read all the markers from the file for this snap. if the resource
// doesn't exist in the workspace then consider this a delete and return
ResourceInfo info= workspace.getResourceInfo(path, false, false);
if (info == null)
return;
info.setMarkers(markers);
info.clear(ICoreConstants.M_MARKERS_SNAP_DIRTY);
}
private Map readAttributes(DataInputStream input) throws IOException {
short attributesSize= input.readShort();
if (attributesSize == 0)
return null;
Map result= new MarkerAttributeMap(attributesSize);
for (int j= 0; j < attributesSize; j++) {
String key= input.readUTF();
byte type= input.readByte();
Object value= null;
switch (type) {
case ATTRIBUTE_INTEGER:
value= new Integer(input.readInt());
break;
case ATTRIBUTE_BOOLEAN:
value= input.readBoolean() ? Boolean.TRUE : Boolean.FALSE;
break;
case ATTRIBUTE_STRING:
value= input.readUTF();
break;
case ATTRIBUTE_NULL:
// do nothing
break;
}
if (value != null)
result.put(key, value);
}
return result.isEmpty() ? null : result;
}
private MarkerInfo readMarkerInfo(DataInputStream input, List readTypes) throws IOException, CoreException {
MarkerInfo info= new MarkerInfo();
info.setId(input.readLong());
byte constant= input.readByte();
switch (constant) {
case QNAME:
String type= input.readUTF();
info.setType(type);
readTypes.add(type);
break;
case INDEX:
info.setType((String)readTypes.get(input.readInt()));
break;
default:
//if we get here the marker file is corrupt
String msg= Messages.resources_readMarkers;
throw new ResourceException(IResourceStatus.FAILED_READ_METADATA, null, msg, null);
}
info.internalSetAttributes(readAttributes(input));
return info;
}
}