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/*******************************************************************************
* Copyright (c) 2005, 2013 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
* Wieant (wieant@tasking.com) - Bug 138007
*******************************************************************************/
package org.eclipse.ui.externaltools.internal.variables;
import java.io.File;
import java.util.Map;
import java.util.StringTokenizer;
import org.eclipse.core.externaltools.internal.IExternalToolConstants;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.variables.IDynamicVariable;
import org.eclipse.core.variables.IDynamicVariableResolver;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.ui.externaltools.internal.model.ExternalToolsPlugin;
public class SystemPathResolver implements IDynamicVariableResolver {
@Override
public String resolveValue(IDynamicVariable variable, String argument) throws CoreException {
if (argument == null) {
throw new CoreException(new Status(IStatus.ERROR, ExternalToolsPlugin.PLUGIN_ID, IExternalToolConstants.ERR_INTERNAL_ERROR, VariableMessages.SystemPathResolver_0, null));
}
Map<String, String> map = DebugPlugin.getDefault().getLaunchManager().getNativeEnvironment();
String path= map.get("PATH"); //$NON-NLS-1$
if (path == null) {
return argument;
}
// On MS Windows the PATHEXT environment variable defines which file extensions
// mark files that are executable (e.g. .EXE, .COM, .BAT)
String pathext = map.get("PATHEXT"); //$NON-NLS-1$
StringTokenizer tokenizer= new StringTokenizer(path, File.pathSeparator);
while (tokenizer.hasMoreTokens()) {
String pathElement= tokenizer.nextToken();
File pathElementFile= new File(pathElement);
if (pathElementFile.isDirectory()) {
File toolFile= new File(pathElementFile, argument);
if (toolFile.exists()) {
return toolFile.getAbsolutePath();
}
if ( pathext != null ) {
StringTokenizer pathextTokenizer = new StringTokenizer(pathext, File.pathSeparator);
while (pathextTokenizer.hasMoreTokens()) {
String pathextElement = pathextTokenizer.nextToken();
toolFile = new File(pathElementFile, argument + pathextElement);
if (toolFile.exists()) {
return toolFile.getAbsolutePath();
}
}
}
}
}
return argument;
}
}
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