WorkingDirResolver.java

/* ====================================================================
 * 
 * The ObjectStyle Group Software License, Version 1.0 
 *
 * Copyright (c) 2004 - 2006 The ObjectStyle Group 
 * and individual authors of the software.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        ObjectStyle Group (http://objectstyle.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "ObjectStyle Group" and "Cayenne" 
 *    must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written 
 *    permission, please contact andrus@objectstyle.org.
 *
 * 5. Products derived from this software may not be called "ObjectStyle"
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 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the ObjectStyle Group.  For more
 * information on the ObjectStyle Group, please see
 * <http://objectstyle.org/>.
 *
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package org.objectstyle.wolips.launching.variables;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
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.objectstyle.wolips.core.resources.types.project.ProjectAdapter;
import org.objectstyle.wolips.launching.LaunchingPlugin;

/**
 * @author ulrich
 */
public class WorkingDirResolver implements IDynamicVariableResolver {

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.core.variables.IDynamicVariableResolver#resolveValue(org.eclipse.core.variables.IDynamicVariable,
	 *      java.lang.String)
	 */
	public String resolveValue(IDynamicVariable variable, String argument) throws CoreException {
		if (argument == null) {
			throw new CoreException(new Status(IStatus.ERROR, LaunchingPlugin.PLUGIN_ID, IStatus.ERROR, "Provide a project name for the working dir variable.", null)); //$NON-NLS-1$
		}
		IProject iProject = ResourcesPlugin.getWorkspace().getRoot().getProject(argument);
		if (iProject == null || !iProject.exists() || !iProject.isAccessible()) {
			throw new CoreException(new Status(IStatus.ERROR, LaunchingPlugin.PLUGIN_ID, IStatus.ERROR, "Could not find or open project: " + argument, null)); //$NON-NLS-1$
		}
		ProjectAdapter project = (ProjectAdapter) iProject.getAdapter(ProjectAdapter.class);
		IPath workingDir = null;
		if (project != null) {
			workingDir = project.getWorkingDir();
		}
		if (workingDir == null) {
			throw new CoreException(new Status(IStatus.ERROR, LaunchingPlugin.PLUGIN_ID, IStatus.ERROR, "Could not find working dir for project: " + argument, null)); //$NON-NLS-1$
		}
		return workingDir.toString();
	}

}