File class\textsanitizer\syntaxhighlight\syntaxhighlight.php

1:	<?php
2:	/**
3:	* TextSanitizer extension
4:	*
5:	* You may not change or alter any portion of this comment or credits
6:	* of supporting developers from this source code or any supporting source code
7:	* which is considered copyrighted (c) material of the original comment or credit authors.
8:	* This program is distributed in the hope that it will be useful,
9:	* but WITHOUT ANY WARRANTY; without even the implied warranty of
10:	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11:	*
12:	* @copyright (c) 2000-2016 XOOPS Project (www.xoops.org)
13:	* @license GNU GPL 2 (https://www.gnu.org/licenses/gpl-2.0.html)
14:	* @package class
15:	* @subpackage textsanitizer
16:	* @since 2.3.0
17:	* @author Taiwen Jiang <phppp@users.sourceforge.net>
18:	*/
19:	defined('XOOPS_ROOT_PATH') \|\| exit('Restricted access');
20:
21:	/**
22:	* Class MytsSyntaxhighlight
23:	*/
24:	class MytsSyntaxhighlight extends MyTextSanitizerExtension
25:	{
26:	/**
27:	* @param MyTextSanitizer $myts
28:	* @param $source
29:	* @param $language
30:	*
31:	* @return bool\|mixed\|string
32:	*/
33:	public function load($myts, $source, $language)
34:	{
35:	$config = parent::loadConfig(__DIR__);
36:	if (empty($config['highlight'])) {
37:	return "<pre>{$source}</pre>";
38:	}
39:	$source = $myts->undoHtmlSpecialChars($source);
40:	$source = stripslashes($source);
41:	$source = $this->php($source);
42:
43:	return $source;
44:	}
45:
46:	/**
47:	* @param $text
48:	*
49:	* @return mixed\|string
50:	*/
51:	public function php($text)
52:	{
53:	$text = trim($text);
54:	$addedtag_open = 0;
55:	if (!strpos($text, '<?php') && (substr($text, 0, 5) !== '<?php')) {
56:	$text = '<?php ' . $text;
57:	$addedtag_open = 1;
58:	}
59:	$addedtag_close = 0;
60:	if (!strpos($text, '?>')) {
61:	$text .= '?>';
62:	$addedtag_close = 1;
63:	}
64:	$oldlevel = error_reporting(0);
65:
66:	//There is a bug in the highlight function(php < 5.3) that it doesn't render
67:	//backslashes properly like in \s. So here we replace any backslashes
68:	$text = str_replace("\\", 'XxxX', $text);
69:
70:	$buffer = highlight_string($text, true); // Require PHP 4.20+
71:
72:	//Placing backspaces back again
73:	$buffer = str_replace('XxxX', "\\", $buffer);
74:
75:	error_reporting($oldlevel);
76:	$pos_open = $pos_close = 0;
77:	if ($addedtag_open) {
78:	$pos_open = strpos($buffer, '<?php ');
79:	}
80:	if ($addedtag_close) {
81:	$pos_close = strrpos($buffer, '?>');
82:	}
83:
84:	$str_open = $addedtag_open ? substr($buffer, 0, $pos_open) : '';
85:	$str_close = $pos_close ? substr($buffer, $pos_close + 5) : '';
86:
87:	$length_open = $addedtag_open ? $pos_open + 14 : 0;
88:	$length_text = $pos_close ? $pos_close - $length_open : 0;
89:	$str_internal = $length_text ? substr($buffer, $length_open, $length_text) : substr($buffer, $length_open);
90:
91:	$buffer = $str_open . $str_internal . $str_close;
92:
93:	return $buffer;
94:	}
95:	}
96:

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