/*
* Copyright (c) 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.
*/
/*
*******************************************************************************
* (C) Copyright IBM Corp. 1996-2005 - All Rights Reserved *
* *
* The original version of this source code and documentation is copyrighted *
* and owned by IBM, These materials are provided under terms of a License *
* Agreement between IBM and Sun. This technology is protected by multiple *
* US and International patents. This notice and attribution to IBM may not *
* to removed. *
*******************************************************************************
*/
package sun.text.normalizer;
import java.text.CharacterIterator;
/**
* This class is a wrapper around CharacterIterator and implements the
* UCharacterIterator protocol
* @author ram
*/
public class CharacterIteratorWrapper extends UCharacterIterator {
private CharacterIterator iterator;
public CharacterIteratorWrapper(CharacterIterator iter){
if(iter==null){
throw new IllegalArgumentException();
}
iterator = iter;
}
/**
* @see UCharacterIterator#current()
*/
public int current() {
int c = iterator.current();
if(c==CharacterIterator.DONE){
return DONE;
}
return c;
}
/**
* @see UCharacterIterator#getLength()
*/
public int getLength() {
return (iterator.getEndIndex() - iterator.getBeginIndex());
}
/**
* @see UCharacterIterator#getIndex()
*/
public int getIndex() {
return iterator.getIndex();
}
/**
* @see UCharacterIterator#next()
*/
public int next() {
int i = iterator.current();
iterator.next();
if(i==CharacterIterator.DONE){
return DONE;
}
return i;
}
/**
* @see UCharacterIterator#previous()
*/
public int previous() {
int i = iterator.previous();
if(i==CharacterIterator.DONE){
return DONE;
}
return i;
}
/**
* @see UCharacterIterator#setIndex(int)
*/
public void setIndex(int index) {
iterator.setIndex(index);
}
//// for StringPrep
/**
* @see UCharacterIterator#getText(char[])
*/
public int getText(char[] fillIn, int offset){
int length =iterator.getEndIndex() - iterator.getBeginIndex();
int currentIndex = iterator.getIndex();
if(offset < 0 || offset + length > fillIn.length){
throw new IndexOutOfBoundsException(Integer.toString(length));
}
for (char ch = iterator.first(); ch != CharacterIterator.DONE; ch = iterator.next()) {
fillIn[offset++] = ch;
}
iterator.setIndex(currentIndex);
return length;
}
/**
* Creates a clone of this iterator. Clones the underlying character iterator.
* @see UCharacterIterator#clone()
*/
public Object clone(){
try {
CharacterIteratorWrapper result = (CharacterIteratorWrapper) super.clone();
result.iterator = (CharacterIterator)this.iterator.clone();
return result;
} catch (CloneNotSupportedException e) {
return null; // only invoked if bad underlying character iterator
}
}
}