| /******************************************************************************* |
| * Copyright (c) 2004, 2017 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 |
| *******************************************************************************/ |
| package org.eclipse.ui.internal.intro.impl.util; |
| |
| import java.io.UnsupportedEncodingException; |
| import java.net.URLDecoder; |
| |
| public class StringUtil { |
| |
| public static String concat(String... strings) { |
| StringBuilder buffer = new StringBuilder(); |
| for (String string : strings) { |
| buffer.append(string); |
| } |
| return buffer.toString(); |
| } |
| |
| public static String decode(String s, String enc) throws UnsupportedEncodingException { |
| try { |
| return URLDecoder.decode(s, enc); |
| } |
| catch (Exception ex) { |
| // fall back to original string |
| return s; |
| } |
| } |
| |
| // Removes leading and trailing whitespace and replaces other |
| // occurrences with a single space. |
| |
| public static String normalizeWhiteSpace(String input) { |
| if (input == null) { |
| return null; |
| } |
| StringBuilder result = new StringBuilder(); |
| boolean atStart = true; |
| boolean whitespaceToInsert = false; |
| for (int i = 0; i < input.length(); i++) { |
| char next = input.charAt(i); |
| if (Character.isWhitespace(next)) { |
| if (!atStart) { |
| whitespaceToInsert = true; |
| } |
| } else { |
| if (whitespaceToInsert) { |
| result.append(' '); |
| whitespaceToInsert = false; |
| } |
| atStart = false; |
| result.append(next); |
| } |
| } |
| return result.toString(); |
| } |
| |
| } |