<?php
abstract class Enigma_Reflector_Abstract implements Enigma_Encryptor_Interface
{
    protected $_halfMapping=array();
    protected $_fullMapping=null;

    public function __construct()
    {
        if(is_null($this->_fullMapping)) {
            $this->_fullMapping=$this->_halfMapping+array_flip($this->_halfMapping);
        }
    }

    public function getOutputCharacterForInputCharacter ($inputCharacter) {
        $inputCharacter=strtoupper($inputCharacter);
        if (isset($this->_fullMapping[$inputCharacter])) {
            return ($this->_fullMapping[$inputCharacter]);
        } else {
            throw new Exception('Invalid reflector input');
        }
    }

    public function getFullMapping()
    {
        return($this->_fullMapping);
    }
}