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/*******************************************************************************
* Copyright (c) 2007, 2013 Matthew Conway 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:
* Matthew Conway - initial API and implementation
* IBM Corporation - bug fixing
*******************************************************************************/
package org.eclipse.ui.externaltools.internal.variables;
import java.util.LinkedHashSet;
import java.util.Set;
import org.eclipse.core.externaltools.internal.model.ExternalToolBuilder;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.core.resources.IResourceDeltaVisitor;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.variables.IDynamicVariable;
import org.eclipse.core.variables.IDynamicVariableResolver;
public class BuildFilesResolver implements IDynamicVariableResolver
{
private static final char ARG_REMOVED = 'r';
private static final char ARG_CHANGED = 'c';
private static final char ARG_ADDED = 'a';
private static final char ARG_DIRS = 'd';
private static final char ARG_FILES = 'f';
// Use a space as a separator as this is a more natural fit for sending a
// list of files to a unix command
private static final String FILE_LIST_SEPARATOR = " "; //$NON-NLS-1$
@Override
public String resolveValue(IDynamicVariable variable, String argument) throws CoreException
{
String result = null;
IResourceDelta buildDelta = ExternalToolBuilder.getBuildDelta();
if (buildDelta != null)
{
final StringBuffer fileList = new StringBuffer();
final Set<String> changedResources = new LinkedHashSet<String>();
// Use the argument to determine which deltas to visit - if none,
// then defaults to all
int deltas = 0;
boolean dirs = false, files = false;
if (argument != null)
{
// Check delta kinds
if (argument.indexOf(ARG_ADDED) > -1)
{
deltas |= IResourceDelta.ADDED;
}
if (argument.indexOf(ARG_CHANGED) > -1)
{
deltas |= IResourceDelta.CHANGED;
}
if (argument.indexOf(ARG_REMOVED) > -1)
{
deltas |= IResourceDelta.REMOVED;
}
// Check wether to include files and/or directories
if (argument.indexOf(ARG_DIRS) > -1)
{
dirs = true;
}
if (argument.indexOf(ARG_FILES) > -1)
{
files = true;
}
}
if (deltas == 0)
{
deltas = IResourceDelta.ADDED | IResourceDelta.CHANGED | IResourceDelta.REMOVED;
}
if (!dirs && !files)
{
dirs = true;
files = true;
}
final int trackDeltas = deltas;
final boolean trackDirs = dirs;
final boolean trackFiles = files;
buildDelta.accept(new IResourceDeltaVisitor()
{
@Override
public boolean visit(IResourceDelta delta) throws CoreException
{
IResource resource = delta.getResource();
// Only track files with the right kind of delta
boolean isTracked = (delta.getKind() & trackDeltas) > 0;
if (isTracked)
{
// Only track dirs if desired
isTracked = trackDirs && resource.getType() != IResource.FILE;
// Only track files if desired
isTracked |= trackFiles && resource.getType() == IResource.FILE;
}
// If tracking a change, then add it to the change set for inclusion in the variable's output
if (isTracked)
{
String osPath = resource.getLocation().toOSString();
if (changedResources.add(osPath))
{
if (fileList.length() > 0)
{
fileList.append(FILE_LIST_SEPARATOR);
}
// Since space is our separator, we need to add quotes
// around each file to handle filenames with embedded
// spaces. We also need to escape out embedded quotes in
// the filename so they don't conflict with these
// special quotes.
//
osPath = osPath.replaceAll("\"", "\\\\\""); //$NON-NLS-1$ //$NON-NLS-2$
fileList.append("\"" + osPath + "\""); //$NON-NLS-1$ //$NON-NLS-2$
}
}
return true;
}
}, deltas);
result = fileList.toString();
}
return result;
}
}
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