package com.thalesgroup.cheddar.MARTE2cheddar;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;

/**
 * Some useful commonly used functions
 * 
 * <copyright>
 * Thales MARTE to Cheddar (Copyright (c) THALES 2007 All rights reserved) is free software; you can redistribute itand/or modify
 * it under the terms of the Eclipse Public License as published in http://www.eclipse.org/legal/epl-v10.html
 *
 * Thales MARTE to Cheddar is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Eclipse Public License for more details.
 * </copyright>
 * 
 * @author Nicolas VIENNE
 *
 */
public class MyEclipseSwissTools {
	
	/**
	 * Return an IFile by changing the extension on the input IFile
	 * @param file
	 * @param extension
	 * @return
	 */
	public static IFile ChangeFileExtension(IFile file, String extension) {
		IProject p = file.getProject();
		IPath outpath = file.getProjectRelativePath().removeFileExtension().addFileExtension(extension);
		return p.getFile(outpath);
	}
	
	/**
	 * Return the IFile corresponding to the resource
	 * @param resource
	 * @return
	 */
	public static IFile getIFile(Resource resource) {
		URI uri = resource.getURI();
		IPath path = new Path(uri.path()).removeFirstSegments(1);
		IWorkspaceRoot wr = ResourcesPlugin.getWorkspace().getRoot();
		return wr.getFile(path);
	}
	
	public static String join(String delim, String[] tokens) {
		if(tokens.length >= 1 ) {
			String result = tokens[0];
			for(int i=1; i < tokens.length; i++) {
				result += delim + tokens[i];
			}
			return result;
		} else {
			return delim;
		}
	}
}