| /******************************************************************************* |
| * Copyright (c) 2004, 2011 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.ui.internal.intro.impl.util; |
| |
| import java.io.UnsupportedEncodingException; |
| import java.net.URLDecoder; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.StringTokenizer; |
| |
| |
| |
| public class StringUtil { |
| |
| public static StringBuffer concat(String string1, String string2, |
| String string3) { |
| StringBuffer buffer = new StringBuffer(string1); |
| buffer.append(string2); |
| buffer.append(string3); |
| return buffer; |
| } |
| |
| public static StringBuffer concat(String string1, String string2, |
| String string3, String string4) { |
| StringBuffer buffer = concat(string1, string2, string3); |
| buffer.append(string4); |
| return buffer; |
| } |
| |
| public static StringBuffer concat(String string1, String string2, |
| String string3, String string4, String string5) { |
| StringBuffer buffer = concat(string1, string2, string3, string4); |
| buffer.append(string5); |
| return buffer; |
| } |
| |
| public static StringBuffer concat(String string1, String string2, |
| String string3, String string4, String string5, String string6) { |
| StringBuffer buffer = concat(string1, string2, string3, string4, |
| string5); |
| buffer.append(string6); |
| return buffer; |
| } |
| |
| /* |
| * Helper method for String#split to handle the case where we |
| * might be running on Foundation class libraries instead of 1.4. |
| */ |
| public static String[] split(String string, String delimiters) { |
| try { |
| return string.split(delimiters); |
| } catch (NoSuchMethodError e) { |
| // not running 1.4 so try a string tokenizer |
| List<String> result = new ArrayList<>(); |
| for (StringTokenizer tokenizer = new StringTokenizer(string, delimiters); tokenizer.hasMoreTokens(); ) |
| result.add(tokenizer.nextToken()); |
| return (String[]) result.toArray(new String[result.size()]); |
| } |
| } |
| |
| 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; |
| } |
| StringBuffer result = new StringBuffer(); |
| 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); |
| } |
| } |
| String resString = result.toString(); |
| return resString; |
| } |
| |
| } |