jlahoda@2413: /*
jlahoda@2415:  * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
jlahoda@2413:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jlahoda@2413:  *
jlahoda@2413:  * This code is free software; you can redistribute it and/or modify it
jlahoda@2413:  * under the terms of the GNU General Public License version 2 only, as
jlahoda@2413:  * published by the Free Software Foundation.  Oracle designates this
jlahoda@2413:  * particular file as subject to the "Classpath" exception as provided
jlahoda@2413:  * by Oracle in the LICENSE file that accompanied this code.
jlahoda@2413:  *
jlahoda@2413:  * This code is distributed in the hope that it will be useful, but WITHOUT
jlahoda@2413:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jlahoda@2413:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jlahoda@2413:  * version 2 for more details (a copy is included in the LICENSE file that
jlahoda@2413:  * accompanied this code).
jlahoda@2413:  *
jlahoda@2413:  * You should have received a copy of the GNU General Public License version
jlahoda@2413:  * 2 along with this work; if not, write to the Free Software Foundation,
jlahoda@2413:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jlahoda@2413:  *
jlahoda@2413:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
jlahoda@2413:  * or visit www.oracle.com if you need additional information or have any
jlahoda@2413:  * questions.
jlahoda@2413:  */
jlahoda@2413: 
jlahoda@2413: package com.sun.tools.javac.util;
jlahoda@2413: 
jlahoda@2413: import java.util.Locale;
jlahoda@2415: import java.util.regex.Matcher;
jlahoda@2415: import java.util.regex.Pattern;
jlahoda@2413: 
jlahoda@2413: /** A collection of utilities for String manipulation.
jlahoda@2413:  *
jlahoda@2413:  *  <p><b>This is NOT part of any supported API.
jlahoda@2413:  *  If you write code that depends on this, you do so at your own risk.
jlahoda@2413:  *  This code and its internal interfaces are subject to change or
jlahoda@2413:  *  deletion without notice.</b>
jlahoda@2413:  */
jlahoda@2413: public class StringUtils {
jlahoda@2413: 
jlahoda@2413:     /**Converts the given String to lower case using the {@link Locale#US US Locale}. The result
jlahoda@2413:      * is independent of the default Locale in the current JVM instance.
jlahoda@2413:      */
jlahoda@2413:     public static String toLowerCase(String source) {
jlahoda@2413:         return source.toLowerCase(Locale.US);
jlahoda@2413:     }
jlahoda@2413: 
jlahoda@2413:     /**Converts the given String to upper case using the {@link Locale#US US Locale}. The result
jlahoda@2413:      * is independent of the default Locale in the current JVM instance.
jlahoda@2413:      */
jlahoda@2413:     public static String toUpperCase(String source) {
jlahoda@2413:         return source.toUpperCase(Locale.US);
jlahoda@2413:     }
jlahoda@2413: 
jlahoda@2415:     /**Case insensitive version of {@link String#indexOf(java.lang.String)}. Equivalent to
jlahoda@2415:      * {@code text.indexOf(str)}, except the matching is case insensitive.
jlahoda@2415:      */
jlahoda@2415:     public static int indexOfIgnoreCase(String text, String str) {
jlahoda@2415:         return indexOfIgnoreCase(text, str, 0);
jlahoda@2415:     }
jlahoda@2415: 
jlahoda@2415:     /**Case insensitive version of {@link String#indexOf(java.lang.String, int)}. Equivalent to
jlahoda@2415:      * {@code text.indexOf(str, startIndex)}, except the matching is case insensitive.
jlahoda@2415:      */
jlahoda@2415:     public static int indexOfIgnoreCase(String text, String str, int startIndex) {
jlahoda@2415:         Matcher m = Pattern.compile(Pattern.quote(str), Pattern.CASE_INSENSITIVE).matcher(text);
jlahoda@2415:         return m.find(startIndex) ? m.start() : -1;
jlahoda@2415:     }
jlahoda@2415: 
jlahoda@2413: }