| /* |
| * Copyright (c) 2003, 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; |
| |
| /** |
| * SupplementaryCharacterData is an SMI-private class which was written for |
| * RuleBasedBreakIterator and BreakDictionary. |
| */ |
| public final class SupplementaryCharacterData implements Cloneable { |
| |
| /** |
| * An array for supplementary characters and values. |
| * Lower one byte is used to keep a byte-value. |
| * Upper three bytes are used to keep the first supplementary character |
| * which has the value. The value is also valid for the following |
| * supplementary characters until the next supplementary character in |
| * the array <code>dataTable</code>. |
| * For example, if the value of <code>dataTable[2]</code> is |
| * <code>0x01000123</code> and the value of <code>dataTable[3]</code> is |
| * <code>0x01000567</code>, supplementary characters from |
| * <code>0x10001</code> to <code>0x10004</code> has the value |
| * <code>0x23</code>. And, <code>getValue(0x10003)</code> returns the value. |
| */ |
| private int[] dataTable; |
| |
| |
| /** |
| * Creates a new SupplementaryCharacterData object with the given table. |
| */ |
| public SupplementaryCharacterData(int[] table) { |
| dataTable = table; |
| } |
| |
| /** |
| * Returns a corresponding value for the given supplementary code-point. |
| */ |
| public int getValue(int index) { |
| // Index should be a valid supplementary character. |
| assert index >= Character.MIN_SUPPLEMENTARY_CODE_POINT && |
| index <= Character.MAX_CODE_POINT : |
| "Invalid code point:" + Integer.toHexString(index); |
| |
| int i = 0; |
| int j = dataTable.length - 1; |
| int k; |
| |
| for (;;) { |
| k = (i + j) / 2; |
| |
| int start = dataTable[k] >> 8; |
| int end = dataTable[k+1] >> 8; |
| |
| if (index < start) { |
| j = k; |
| } else if (index > (end-1)) { |
| i = k; |
| } else { |
| return dataTable[k] & 0xFF; |
| } |
| } |
| } |
| |
| /** |
| * Returns the data array. |
| */ |
| public int[] getArray() { |
| return dataTable; |
| } |
| |
| } |