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