/*******************************************************************************
* Copyright (c) 2008, 2016 xored software, Inc. 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:
* xored software, Inc. - initial API and Implementation (Alex Panchenko)
*******************************************************************************/
package org.eclipse.dltk.internal.launching;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Platform;
public class PathEqualityUtils {
private static final class Win32PathCompare implements IPathEquality {
@Override
public boolean equals(IPath path1, IPath path2) {
/*
* the .equals method of IPath ignores trailing separators so we
* must as well
*/
return path1.removeTrailingSeparator().toOSString()
.equalsIgnoreCase(
path2.removeTrailingSeparator().toOSString());
}
@Override
public boolean isPrefixOf(IPath path, IPath anotherPath) {
if (path.getDevice() == null) {
if (anotherPath.getDevice() != null) {
return false;
}
} else {
if (!path.getDevice()
.equalsIgnoreCase(anotherPath.getDevice())) {
return false;
}
}
if (path.isEmpty() || (path.isRoot() && anotherPath.isAbsolute())) {
return true;
}
int len = path.segmentCount();
if (len > anotherPath.segmentCount()) {
return false;
}
for (int i = 0; i < len; i++) {
if (!path.segment(i).equalsIgnoreCase(anotherPath.segment(i)))
return false;
}
return true;
}
}
private static final class GenericPathCompare implements IPathEquality {
@Override
public boolean equals(IPath path1, IPath path2) {
return path1.equals(path2);
}
@Override
public boolean isPrefixOf(IPath path, IPath anotherPath) {
return path.isPrefixOf(anotherPath);
}
}
public static synchronized IPathEquality getInstance() {
final IPathEquality compare;
if (Platform.getOS().equals(Platform.OS_WIN32)) {
compare = new Win32PathCompare();
} else {
compare = new GenericPathCompare();
}
return compare;
}
}