1 | <?php |
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2 | // +----------------------------------------------------------------------+ |
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3 | // | PHP Version 4 | |
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4 | // +----------------------------------------------------------------------+ |
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5 | // | Copyright (c) 1997-2004 The PHP Group | |
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6 | // +----------------------------------------------------------------------+ |
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7 | // | This source file is subject to version 3.0 of the PHP license, | |
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8 | // | that is bundled with this package in the file LICENSE, and is | |
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9 | // | available at through the world-wide-web at | |
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10 | // | http://www.php.net/license/3_0.txt. | |
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11 | // | If you did not receive a copy of the PHP license and are unable to | |
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12 | // | obtain it through the world-wide-web, please send a note to | |
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13 | // | license@php.net so we can mail you a copy immediately. | |
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14 | // +----------------------------------------------------------------------+ |
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15 | // | Authors: Michael Wallner <mike@php.net> | |
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16 | // | Aidan Lister <aidan@php.net> | |
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17 | // +----------------------------------------------------------------------+ |
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18 | // |
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19 | // $Id: convert_uudecode.php,v 1.8 2005/01/26 04:55:13 aidan Exp $ |
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20 | |
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21 | |
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22 | /** |
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23 | * Replace convert_uudecode() |
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24 | * |
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25 | * @category PHP |
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26 | * @package PHP_Compat |
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27 | * @link http://php.net/function.convert_uudecode |
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28 | * @author Michael Wallner <mike@php.net> |
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29 | * @author Aidan Lister <aidan@php.net> |
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30 | * @version $Revision: 1.8 $ |
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31 | * @since PHP 5 |
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32 | * @require PHP 4.0.0 (user_error) |
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33 | */ |
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34 | if (!function_exists('convert_uudecode')) { |
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35 | function convert_uudecode($string) |
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36 | { |
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37 | // Sanity check |
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38 | if (!is_scalar($string)) { |
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39 | user_error('convert_uuencode() expects parameter 1 to be string, ' . |
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40 | gettype($string) . ' given', E_USER_WARNING); |
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41 | return false; |
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42 | } |
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43 | |
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44 | if (strlen($string) < 8) { |
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45 | user_error('convert_uuencode() The given parameter is not a valid uuencoded string', E_USER_WARNING); |
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46 | return false; |
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47 | } |
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48 | |
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49 | $decoded = ''; |
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50 | foreach (explode("\n", $string) as $line) { |
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51 | |
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52 | $c = count($bytes = unpack('c*', substr(trim($line), 1))); |
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53 | |
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54 | while ($c % 4) { |
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55 | $bytes[++$c] = 0; |
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56 | } |
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57 | |
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58 | foreach (array_chunk($bytes, 4) as $b) { |
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59 | $b0 = $b[0] == 0x60 ? 0 : $b[0] - 0x20; |
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60 | $b1 = $b[1] == 0x60 ? 0 : $b[1] - 0x20; |
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61 | $b2 = $b[2] == 0x60 ? 0 : $b[2] - 0x20; |
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62 | $b3 = $b[3] == 0x60 ? 0 : $b[3] - 0x20; |
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63 | |
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64 | $b0 <<= 2; |
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65 | $b0 |= ($b1 >> 4) & 0x03; |
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66 | $b1 <<= 4; |
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67 | $b1 |= ($b2 >> 2) & 0x0F; |
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68 | $b2 <<= 6; |
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69 | $b2 |= $b3 & 0x3F; |
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70 | |
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71 | $decoded .= pack('c*', $b0, $b1, $b2); |
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72 | } |
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73 | } |
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74 | |
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75 | return rtrim($decoded, "\0"); |
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76 | } |
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77 | } |
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78 | |
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79 | ?> |
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