| /* |
| * Copyright (c) 2001, 2005, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.text; |
| |
| import sun.text.normalizer.NormalizerBase; |
| import sun.text.normalizer.NormalizerImpl; |
| |
| public final class ComposedCharIter { |
| /** |
| * Constant that indicates the iteration has completed. |
| * {@link #next} returns this value when there are no more composed characters |
| * over which to iterate. |
| */ |
| public static final int DONE = NormalizerBase.DONE; |
| |
| //cache the decomps mapping, so the seconde composedcharIter does |
| //not need to get the data again. |
| private static int chars[]; |
| private static String decomps[]; |
| private static int decompNum; |
| |
| static { |
| int maxNum = 2000; //TBD: Unicode 4.0 only has 1926 canoDecomp... |
| chars = new int[maxNum]; |
| decomps = new String[maxNum]; |
| decompNum = NormalizerImpl.getDecompose(chars, decomps); |
| } |
| |
| /** |
| * Construct a new <tt>ComposedCharIter</tt>. The iterator will return |
| * all Unicode characters with canonical decompositions, excluding Korean |
| * Hangul characters. |
| */ |
| public ComposedCharIter() { } |
| |
| /** |
| * Returns the next precomposed Unicode character. |
| * Repeated calls to <tt>next</tt> return all of the precomposed characters defined |
| * by Unicode, in ascending order. After all precomposed characters have |
| * been returned, {@link #hasNext} will return <tt>false</tt> and further calls |
| * to <tt>next</tt> will return {@link #DONE}. |
| */ |
| public int next() { |
| if (curChar == decompNum - 1) { |
| return DONE; |
| } |
| return chars[++curChar]; |
| } |
| |
| /** |
| * Returns the Unicode decomposition of the current character. |
| * This method returns the decomposition of the precomposed character most |
| * recently returned by {@link #next}. The resulting decomposition is |
| * affected by the settings of the options passed to the constructor. |
| */ |
| public String decomposition() { |
| return decomps[curChar]; |
| } |
| private int curChar = -1; |
| } |