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src/share/classes/com/sun/tools/javac/util/StringUtils.java@93012e2a5d1d (annotated)

src/share/classes/com/sun/tools/javac/util/StringUtils.java

Sat, 07 Nov 2020 10:30:02 +0800

author

aoqi

date

Sat, 07 Nov 2020 10:30:02 +0800

changeset 3938

93012e2a5d1d

parent 2525

2eb010b6cb22

permissions

-rw-r--r--

Added tag mips-jdk8u275-b01 for changeset eb6ee6a5f2fe

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation. Oracle designates this
aoqi@0	8	* particular file as subject to the "Classpath" exception as provided
aoqi@0	9	* by Oracle in the LICENSE file that accompanied this code.
aoqi@0	10	*
aoqi@0	11	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	14	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	15	* accompanied this code).
aoqi@0	16	*
aoqi@0	17	* You should have received a copy of the GNU General Public License version
aoqi@0	18	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	19	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	20	*
aoqi@0	21	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	22	* or visit www.oracle.com if you need additional information or have any
aoqi@0	23	* questions.
aoqi@0	24	*/
aoqi@0	25
aoqi@0	26	package com.sun.tools.javac.util;
aoqi@0	27
aoqi@0	28	import java.util.Locale;
aoqi@0	29	import java.util.regex.Matcher;
aoqi@0	30	import java.util.regex.Pattern;
aoqi@0	31
aoqi@0	32	/** A collection of utilities for String manipulation.
aoqi@0	33	*
aoqi@0	34	* <p><b>This is NOT part of any supported API.
aoqi@0	35	* If you write code that depends on this, you do so at your own risk.
aoqi@0	36	* This code and its internal interfaces are subject to change or
aoqi@0	37	* deletion without notice.</b>
aoqi@0	38	*/
aoqi@0	39	public class StringUtils {
aoqi@0	40
aoqi@0	41	/**Converts the given String to lower case using the {@link Locale#US US Locale}. The result
aoqi@0	42	* is independent of the default Locale in the current JVM instance.
aoqi@0	43	*/
aoqi@0	44	public static String toLowerCase(String source) {
aoqi@0	45	return source.toLowerCase(Locale.US);
aoqi@0	46	}
aoqi@0	47
aoqi@0	48	/**Converts the given String to upper case using the {@link Locale#US US Locale}. The result
aoqi@0	49	* is independent of the default Locale in the current JVM instance.
aoqi@0	50	*/
aoqi@0	51	public static String toUpperCase(String source) {
aoqi@0	52	return source.toUpperCase(Locale.US);
aoqi@0	53	}
aoqi@0	54
aoqi@0	55	/**Case insensitive version of {@link String#indexOf(java.lang.String)}. Equivalent to
aoqi@0	56	* {@code text.indexOf(str)}, except the matching is case insensitive.
aoqi@0	57	*/
aoqi@0	58	public static int indexOfIgnoreCase(String text, String str) {
aoqi@0	59	return indexOfIgnoreCase(text, str, 0);
aoqi@0	60	}
aoqi@0	61
aoqi@0	62	/**Case insensitive version of {@link String#indexOf(java.lang.String, int)}. Equivalent to
aoqi@0	63	* {@code text.indexOf(str, startIndex)}, except the matching is case insensitive.
aoqi@0	64	*/
aoqi@0	65	public static int indexOfIgnoreCase(String text, String str, int startIndex) {
aoqi@0	66	Matcher m = Pattern.compile(Pattern.quote(str), Pattern.CASE_INSENSITIVE).matcher(text);
aoqi@0	67	return m.find(startIndex) ? m.start() : -1;
aoqi@0	68	}
aoqi@0	69
aoqi@0	70	}