2362N/A * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved. 0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 0N/A * This code is free software; you can redistribute it and/or modify it 0N/A * under the terms of the GNU General Public License version 2 only, as 2362N/A * published by the Free Software Foundation. Oracle designates this 0N/A * particular file as subject to the "Classpath" exception as provided 2362N/A * by Oracle in the LICENSE file that accompanied this code. 0N/A * This code is distributed in the hope that it will be useful, but WITHOUT 0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 0N/A * version 2 for more details (a copy is included in the LICENSE file that 0N/A * accompanied this code). 0N/A * You should have received a copy of the GNU General Public License version 0N/A * 2 along with this work; if not, write to the Free Software Foundation, 0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2362N/A * or visit www.oracle.com if you need additional information or have any 0N/A ******************************************************************************* 0N/A * (C) Copyright IBM Corp. 1996-2005 - All Rights Reserved * 0N/A * The original version of this source code and documentation is copyrighted * 0N/A * and owned by IBM, These materials are provided under terms of a License * 0N/A * Agreement between IBM and Sun. This technology is protected by multiple * 0N/A * US and International patents. This notice and attribution to IBM may not * 0N/A ******************************************************************************* 0N/A * This class provides the method <code>normalize</code> which transforms Unicode 0N/A * text into an equivalent composed or decomposed form, allowing for easier 0N/A * sorting and searching of text. 0N/A * The <code>normalize</code> method supports the standard normalization forms 0N/A * Unicode Standard Annex #15 — Unicode Normalization Forms</a>. 0N/A * Characters with accents or other adornments can be encoded in 0N/A * several different ways in Unicode. For example, take the character A-acute. 0N/A * In Unicode, this can be encoded as a single character (the "composed" form): 0N/A * U+00C1 LATIN CAPITAL LETTER A WITH ACUTE</pre> 0N/A * or as two separate characters (the "decomposed" form): 0N/A * U+0041 LATIN CAPITAL LETTER A 0N/A * U+0301 COMBINING ACUTE ACCENT</pre> 0N/A * To a user of your program, however, both of these sequences should be 0N/A * treated as the same "user-level" character "A with acute accent". When you 0N/A * are searching or comparing text, you must ensure that these two sequences are 0N/A * treated as equivalent. In addition, you must handle characters with more than 0N/A * one accent. Sometimes the order of a character's combining accents is 0N/A * significant, while in other cases accent sequences in different orders are 0N/A * really equivalent. 0N/A * Similarly, the string "ffi" can be encoded as three separate letters: 0N/A * U+0066 LATIN SMALL LETTER F 0N/A * U+0066 LATIN SMALL LETTER F 0N/A * U+0069 LATIN SMALL LETTER I</pre> 0N/A * or as the single character 0N/A * U+FB03 LATIN SMALL LIGATURE FFI</pre> 0N/A * The ffi ligature is not a distinct semantic character, and strictly speaking 0N/A * it shouldn't be in Unicode at all, but it was included for compatibility 0N/A * with existing character sets that already provided it. The Unicode standard 0N/A * identifies such characters by giving them "compatibility" decompositions 0N/A * into the corresponding semantic characters. When sorting and searching, you 0N/A * will often want to use these mappings. 0N/A * The <code>normalize</code> method helps solve these problems by transforming 0N/A * text into the canonical composed and decomposed forms as shown in the first 0N/A * example above. In addition, you can have it perform compatibility 0N/A * decompositions so that you can treat compatibility characters the same as 0N/A * their equivalents. 0N/A * Finally, the <code>normalize</code> method rearranges accents into the 0N/A * proper canonical order, so that you do not have to worry about accent 0N/A * rearrangement on your own. 0N/A * The W3C generally recommends to exchange texts in NFC. 0N/A * Note also that most legacy character encodings use only precomposed forms and 0N/A * often do not encode any combining marks by themselves. For conversion to such 0N/A * character encodings the Unicode text needs to be normalized to NFC. 0N/A * For more usage examples, see the Unicode Standard Annex. 0N/A * This enum provides constants of the four Unicode normalization forms 0N/A * that are described in 0N/A * Unicode Standard Annex #15 — Unicode Normalization Forms</a> 0N/A * and two methods to access them. 0N/A * Canonical decomposition. 0N/A * Canonical decomposition, followed by canonical composition. 0N/A * Compatibility decomposition. 0N/A * Compatibility decomposition, followed by canonical composition. 0N/A * Normalize a sequence of char values. 0N/A * The sequence will be normalized according to the specified normalization 0N/A * @param src The sequence of char values to normalize. 0N/A * @param form The normalization form; one of 0N/A * {@link java.text.Normalizer.Form#NFC}, 0N/A * {@link java.text.Normalizer.Form#NFD}, 0N/A * {@link java.text.Normalizer.Form#NFKC}, 0N/A * {@link java.text.Normalizer.Form#NFKD} 0N/A * @return The normalized String 0N/A * @throws NullPointerException If <code>src</code> or <code>form</code> 0N/A * Determines if the given sequence of char values is normalized. 0N/A * @param src The sequence of char values to be checked. 0N/A * @param form The normalization form; one of 0N/A * {@link java.text.Normalizer.Form#NFC}, 0N/A * {@link java.text.Normalizer.Form#NFD}, 0N/A * {@link java.text.Normalizer.Form#NFKC}, 0N/A * {@link java.text.Normalizer.Form#NFKD} 0N/A * @return true if the sequence of char values is normalized; 0N/A * @throws NullPointerException If <code>src</code> or <code>form</code>