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| 1 | +/* | |
| 2 | + * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +/* | |
| 27 | + ******************************************************************************* | |
| 28 | + * (C) Copyright IBM Corp. 1996-2005 - All Rights Reserved * | |
| 29 | + * * | |
| 30 | + * The original version of this source code and documentation is copyrighted * | |
| 31 | + * and owned by IBM, These materials are provided under terms of a License * | |
| 32 | + * Agreement between IBM and Sun. This technology is protected by multiple * | |
| 33 | + * US and International patents. This notice and attribution to IBM may not * | |
| 34 | + * to removed. * | |
| 35 | + ******************************************************************************* | |
| 36 | + */ | |
| 37 | + | |
| 38 | +package sun.text.normalizer; | |
| 39 | + | |
| 40 | +import java.text.CharacterIterator; | |
| 41 | + | |
| 42 | +/** | |
| 43 | + * This class is a wrapper around CharacterIterator and implements the | |
| 44 | + * UCharacterIterator protocol | |
| 45 | + * @author ram | |
| 46 | + */ | |
| 47 | + | |
| 48 | +public class CharacterIteratorWrapper extends UCharacterIterator { | |
| 49 | + | |
| 50 | + private CharacterIterator iterator; | |
| 51 | + | |
| 52 | + public CharacterIteratorWrapper(CharacterIterator iter){ | |
| 53 | + if(iter==null){ | |
| 54 | + throw new IllegalArgumentException(); | |
| 55 | + } | |
| 56 | + iterator = iter; | |
| 57 | + } | |
| 58 | + | |
| 59 | + /** | |
| 60 | + * @see UCharacterIterator#current() | |
| 61 | + */ | |
| 62 | + public int current() { | |
| 63 | + int c = iterator.current(); | |
| 64 | + if(c==CharacterIterator.DONE){ | |
| 65 | + return DONE; | |
| 66 | + } | |
| 67 | + return c; | |
| 68 | + } | |
| 69 | + | |
| 70 | + /** | |
| 71 | + * @see UCharacterIterator#getLength() | |
| 72 | + */ | |
| 73 | + public int getLength() { | |
| 74 | + return (iterator.getEndIndex() - iterator.getBeginIndex()); | |
| 75 | + } | |
| 76 | + | |
| 77 | + /** | |
| 78 | + * @see UCharacterIterator#getIndex() | |
| 79 | + */ | |
| 80 | + public int getIndex() { | |
| 81 | + return iterator.getIndex(); | |
| 82 | + } | |
| 83 | + | |
| 84 | + /** | |
| 85 | + * @see UCharacterIterator#next() | |
| 86 | + */ | |
| 87 | + public int next() { | |
| 88 | + int i = iterator.current(); | |
| 89 | + iterator.next(); | |
| 90 | + if(i==CharacterIterator.DONE){ | |
| 91 | + return DONE; | |
| 92 | + } | |
| 93 | + return i; | |
| 94 | + } | |
| 95 | + | |
| 96 | + /** | |
| 97 | + * @see UCharacterIterator#previous() | |
| 98 | + */ | |
| 99 | + public int previous() { | |
| 100 | + int i = iterator.previous(); | |
| 101 | + if(i==CharacterIterator.DONE){ | |
| 102 | + return DONE; | |
| 103 | + } | |
| 104 | + return i; | |
| 105 | + } | |
| 106 | + | |
| 107 | + /** | |
| 108 | + * @see UCharacterIterator#setIndex(int) | |
| 109 | + */ | |
| 110 | + public void setIndex(int index) { | |
| 111 | + iterator.setIndex(index); | |
| 112 | + } | |
| 113 | + | |
| 114 | + //// for StringPrep | |
| 115 | + /** | |
| 116 | + * @see UCharacterIterator#getText(char[]) | |
| 117 | + */ | |
| 118 | + public int getText(char[] fillIn, int offset){ | |
| 119 | + int length =iterator.getEndIndex() - iterator.getBeginIndex(); | |
| 120 | + int currentIndex = iterator.getIndex(); | |
| 121 | + if(offset < 0 || offset + length > fillIn.length){ | |
| 122 | + throw new IndexOutOfBoundsException(Integer.toString(length)); | |
| 123 | + } | |
| 124 | + | |
| 125 | + for (char ch = iterator.first(); ch != CharacterIterator.DONE; ch = iterator.next()) { | |
| 126 | + fillIn[offset++] = ch; | |
| 127 | + } | |
| 128 | + iterator.setIndex(currentIndex); | |
| 129 | + | |
| 130 | + return length; | |
| 131 | + } | |
| 132 | + | |
| 133 | + /** | |
| 134 | + * Creates a clone of this iterator. Clones the underlying character iterator. | |
| 135 | + * @see UCharacterIterator#clone() | |
| 136 | + */ | |
| 137 | + public Object clone(){ | |
| 138 | + try { | |
| 139 | + CharacterIteratorWrapper result = (CharacterIteratorWrapper) super.clone(); | |
| 140 | + result.iterator = (CharacterIterator)this.iterator.clone(); | |
| 141 | + return result; | |
| 142 | + } catch (CloneNotSupportedException e) { | |
| 143 | + return null; // only invoked if bad underlying character iterator | |
| 144 | + } | |
| 145 | + } | |
| 146 | +} | |