org.eclipse.dirigible.repository.api.ResourceUtil Maven / Gradle / Ivy

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/**
 * Copyright (c) 2010-2018 SAP 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:
 *   SAP - initial API and implementation
 */
package org.eclipse.dirigible.repository.api;

/**
 * Utility class for handling Resource objects.
 */
public final class ResourceUtil {

	/**
	 * Returns the extension of the resource name if there is such, otherwise
	 * returns null. If there is a dot but there is no extension,
	 * then this method returns the empty string.
	 * 
	 * For example:
	 * 

	 * request.xml yields "xml"
	 * page.html yields "html"
	 * sample. yields ""
	 * sample yields null
	 * 
	 *
	 * @param resource
	 *            resource who's name extension will be returned.
	 * @return the extension of a resource name
	 */
	public static String getResourceExtension(IResource resource) {
		final String name = resource.getName();
		final int lastDotIndex = name.lastIndexOf('.');
		if (lastDotIndex == -1) {
			return null;
		}
		return name.substring(lastDotIndex + 1);
	}

	/**
	 * Returns the name of a resource without the extension.
	 * 
	 * For example:
	 * 

	 * request.xml yields "request"
	 * page.html yields "page"
	 * sample. yields "sample"
	 * sample yields "sample"
	 * 
	 *
	 * @param resource
	 *            resource who's pure name will be returned.
	 * @return the name of a resource without the extension at the end.
	 */
	public static String getResourcePureName(IResource resource) {
		final String name = resource.getName();
		final int lastDotIndex = name.lastIndexOf('.');
		if (lastDotIndex == -1) {
			return name;
		}
		return name.substring(0, lastDotIndex);
	}

	/**
	 * Instantiates a new resource util.
	 */
	/*
	 * Disable instantiation
	 */
	private ResourceUtil() {
		super();
	}

}