/*
* Copyright (C) 2000 - 2008 TagServlet Ltd
*
* This file is part of Open BlueDragon (OpenBD) CFML Server Engine.
*
* OpenBD is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* Free Software Foundation,version 3.
*
* OpenBD 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenBD. If not, see http://www.gnu.org/licenses/
*
* Additional permission under GNU GPL version 3 section 7
*
* If you modify this Program, or any covered work, by linking or combining
* it with any of the JARS listed in the README.txt (or a modified version of
* (that library), containing parts covered by the terms of that JAR, the
* licensors of this Program grant you additional permission to convey the
* resulting work.
* README.txt @ http://www.openbluedragon.org/license/README.txt
*
* http://www.openbluedragon.org/
*/
package com.nary.util;
/**
* A character vector class. Effectively a vector that holds char types.
*
*/
public class charVector{
private char [] chars;
private int actualSize;
private int virtualSize;
private int increment = 5; // size to increment by when array gets full
public charVector( int _size ){
actualSize = _size;
virtualSize = 0;
chars = new char[ actualSize ];
}// charVector()
public charVector(){
this( 10 );
}// charVector()
public void add( char _ch ){
if ( virtualSize == actualSize ){
increaseSize();
}
chars[ virtualSize ] = _ch;
virtualSize++;
}// add()
public void clear(){
virtualSize = 0;
}// clear
/**
* returns the number of chars in the
* character vector
*/
public int size(){
return virtualSize;
}
/**
* returns the last char in the vector
*/
public char getLast(){
if ( virtualSize > 0 ){
return chars[ virtualSize - 1 ];
}else{
return (char) -1;
}
}// getLast()
/**
* returns the last char in the array removing it
* Assumes that there is at least one char in the vector
*/
public char removeLast(){
virtualSize--;
return chars[ virtualSize ];
}
private void increaseSize(){
actualSize += increment;
char [] temp = new char[ actualSize ];
System.arraycopy( chars, 0, temp, 0, chars.length );
chars = temp;
}// increaseSize()
}// charVector