43 lines
1.0 KiB
PHP
43 lines
1.0 KiB
PHP
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<?php
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/**
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* This file is part of FPDI
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*
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* @package FPDI
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* @copyright Copyright (c) 2017 Setasign - Jan Slabon (https://www.setasign.com)
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* @license http://opensource.org/licenses/mit-license The MIT License
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* @version 1.6.2
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*/
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/**
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* Class FilterASCIIHexDecode
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*/
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class FilterASCIIHexDecode
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{
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/**
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* Converts an ASCII hexadecimal encoded string into it's binary representation.
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*
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* @param string $data The input string
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* @return string
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*/
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public function decode($data)
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{
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$data = preg_replace('/[^0-9A-Fa-f]/', '', rtrim($data, '>'));
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if ((strlen($data) % 2) == 1) {
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$data .= '0';
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}
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return pack('H*', $data);
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}
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/**
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* Converts a string into ASCII hexadecimal representation.
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*
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* @param string $data The input string
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* @param boolean $leaveEOD
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* @return string
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*/
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public function encode($data, $leaveEOD = false)
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{
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return current(unpack('H*', $data)) . ($leaveEOD ? '' : '>');
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}
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}
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