<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Pdf
* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Lzw.php 24594 2012-01-05 21:27:01Z matthew $
*/
/** Zend_Pdf_Filter_Compression */
require_once 'Zend/Pdf/Filter/Compression.php';
/**
* LZW stream filter
*
* @package Zend_Pdf
* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Pdf_Filter_Compression_Lzw extends Zend_Pdf_Filter_Compression
{
/**
* Get EarlyChange decode param value
*
* @param array $params
* @return integer
* @throws Zend_Pdf_Exception
*/
private static function _getEarlyChangeValue($params)
{
if (isset($params['EarlyChange'])) {
$earlyChange = $params['EarlyChange'];
if ($earlyChange != 0 && $earlyChange != 1) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Invalid value of \'EarlyChange\' decode param - ' . $earlyChange . '.' );
}
return $earlyChange;
} else {
return 1;
}
}
/**
* Encode data
*
* @param string $data
* @param array $params
* @return string
* @throws Zend_Pdf_Exception
*/
public static function encode($data, $params = null)
{
if ($params != null) {
$data = self::_applyEncodeParams($data, $params);
}
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Not implemented yet');
}
/**
* Decode data
*
* @param string $data
* @param array $params
* @return string
* @throws Zend_Pdf_Exception
*/
public static function decode($data, $params = null)
{
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Not implemented yet');
if ($params !== null) {
return self::_applyDecodeParams($data, $params);
} else {
return $data;
}
}
}