| /******************************************************************************* |
| * Copyright (c) 2006 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.core.runtime.internal.adaptor; |
| |
| import java.io.File; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| |
| /** |
| * @since 3.3 |
| */ |
| public class LocationHelper { |
| /** |
| * Builds a URL with the given specification |
| * @param spec the URL specification |
| * @param trailingSlash flag to indicate a trailing slash on the spec |
| * @return a URL |
| */ |
| public static URL buildURL(String spec, boolean trailingSlash) { |
| if (spec == null) |
| return null; |
| boolean isFile = spec.startsWith("file:"); //$NON-NLS-1$ |
| try { |
| if (isFile) |
| return adjustTrailingSlash(new File(spec.substring(5)).toURL(), trailingSlash); |
| return new URL(spec); |
| } catch (MalformedURLException e) { |
| // if we failed and it is a file spec, there is nothing more we can do |
| // otherwise, try to make the spec into a file URL. |
| if (isFile) |
| return null; |
| try { |
| return adjustTrailingSlash(new File(spec).toURL(), trailingSlash); |
| } catch (MalformedURLException e1) { |
| return null; |
| } |
| } |
| } |
| |
| private static URL adjustTrailingSlash(URL url, boolean trailingSlash) throws MalformedURLException { |
| String file = url.getFile(); |
| if (trailingSlash == (file.endsWith("/"))) //$NON-NLS-1$ |
| return url; |
| file = trailingSlash ? file + "/" : file.substring(0, file.length() - 1); //$NON-NLS-1$ |
| return new URL(url.getProtocol(), url.getHost(), file); |
| } |
| |
| } |