| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.camel.util; |
| |
| /** |
| * Helper methods for working with Strings. |
| */ |
| public final class StringHelper { |
| |
| /** |
| * Constructor of utility class should be private. |
| */ |
| private StringHelper() { |
| } |
| |
| /** |
| * Ensures that <code>s</code> is friendly for a URL or file system. |
| * |
| * @param s String to be sanitized. |
| * @return sanitized version of <code>s</code>. |
| * @throws NullPointerException if <code>s</code> is <code>null</code>. |
| */ |
| public static String sanitize(String s) { |
| return s |
| .replace(':', '-') |
| .replace('_', '-') |
| .replace('.', '-') |
| .replace('/', '-') |
| .replace('\\', '-'); |
| } |
| |
| /** |
| * Counts the number of times the given char is in the string |
| * |
| * @param s the string |
| * @param ch the char |
| * @return number of times char is located in the string |
| */ |
| public static int countChar(String s, char ch) { |
| if (ObjectHelper.isEmpty(s)) { |
| return 0; |
| } |
| |
| int matches = 0; |
| for (int i = 0; i < s.length(); i++) { |
| char c = s.charAt(i); |
| if (ch == c) { |
| matches++; |
| } |
| } |
| |
| return matches; |
| } |
| |
| public static String removeQuotes(String s) { |
| if (ObjectHelper.isEmpty(s)) { |
| return s; |
| } |
| |
| s = s.replaceAll("'", ""); |
| s = s.replaceAll("\"", ""); |
| return s; |
| } |
| |
| public static String removeLeadingAndEndingQuotes(String s) { |
| if (ObjectHelper.isEmpty(s)) { |
| return s; |
| } |
| |
| if (s.startsWith("'") && s.endsWith("'")) { |
| return s.substring(1, s.length() - 1); |
| } |
| if (s.startsWith("\"") && s.endsWith("\"")) { |
| return s.substring(1, s.length() - 1); |
| } |
| return s; |
| } |
| |
| /** |
| * Encodes the text into safe XML by replacing < > and & with XML tokens |
| * |
| * @param text the text |
| * @return the encoded text |
| */ |
| public static String xmlEncode(String text) { |
| if (text == null) { |
| return ""; |
| } |
| // must replace amp first, so we dont replace < to amp later |
| return text.replaceAll("&", "&").replaceAll("\"", """).replaceAll("<", "<").replaceAll(">", ">"); |
| } |
| |
| /** |
| * Determines if the string has at least one letter in upper case |
| * @param text the text |
| * @return <tt>true</tt> if at least one letter is upper case, <tt>false</tt> otherwise |
| */ |
| public static boolean hasUpperCase(String text) { |
| if (text == null) { |
| return false; |
| } |
| |
| for (int i = 0; i < text.length(); i++) { |
| char ch = text.charAt(i); |
| if (Character.isUpperCase(ch)) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Does the expression have the language start token? |
| * |
| * @param expression the expression |
| * @param language the name of the language, such as simple |
| * @return <tt>true</tt> if the expression contains the start token, <tt>false</tt> otherwise |
| */ |
| public static boolean hasStartToken(String expression, String language) { |
| if (expression == null) { |
| return false; |
| } |
| |
| if (expression.indexOf("${") >= 0) { |
| return true; |
| } |
| |
| if (language != null && expression.indexOf("$" + language + "{") >= 0) { |
| return true; |
| } |
| |
| return false; |
| } |
| |
| } |