File xoops_lib\modules\protector\library\HTMLPurifier\Injector\Linkify.php

1:	<?php
2:
3:	/**
4:	* Injector that converts http, https and ftp text URLs to actual links.
5:	*/
6:	class HTMLPurifier_Injector_Linkify extends HTMLPurifier_Injector
7:	{
8:	/**
9:	* @type string
10:	*/
11:	public $name = 'Linkify';
12:
13:	/**
14:	* @type array
15:	*/
16:	public $needed = array('a' => array('href'));
17:
18:	/**
19:	* @param HTMLPurifier_Token $token
20:	*/
21:	public function handleText(&$token)
22:	{
23:	if (!$this->allowsElement('a')) {
24:	return;
25:	}
26:
27:	if (strpos($token->data, '://') === false) {
28:	// our really quick heuristic failed, abort
29:	// this may not work so well if we want to match things like
30:	// "google.com", but then again, most people don't
31:	return;
32:	}
33:
34:	// there is/are URL(s). Let's split the string.
35:	// We use this regex:
36:	// https://gist.github.com/gruber/249502
37:	// but with @cscott's backtracking fix and also
38:	// the Unicode characters un-Unicodified.
39:	$bits = preg_split(
40:	'/\\b((?:[a-z][\\w\\-]+:(?:\\/{1,3}\|[a-z0-9%])\|www\\d{0,3}[.]\|[a-z0-9.\\-]+[.][a-z]{2,4}\\/)(?:[^\\s()<>]\|\$(?:[^\\s()<>]\|(?:\\([^\\s()<>]+\$))\\))+(?:\$(?:[^\\s()<>]\|(?:\\([^\\s()<>]+\$))\\)\|[^\\s`!()\\[\\]{};:\'".,<>?\x{00ab}\x{00bb}\x{201c}\x{201d}\x{2018}\x{2019}]))/iu',
41:	$token->data, -1, PREG_SPLIT_DELIM_CAPTURE);
42:
43:	if ($bits === false) {
44:	return;
45:	}
46:
47:	$token = array();
48:
49:	// $i = index
50:	// $c = count
51:	// $l = is link
52:	for ($i = 0, $c = count($bits), $l = false; $i < $c; $i++, $l = !$l) {
53:	if (!$l) {
54:	if ($bits[$i] === '') {
55:	continue;
56:	}
57:	$token[] = new HTMLPurifier_Token_Text($bits[$i]);
58:	} else {
59:	$token[] = new HTMLPurifier_Token_Start('a', array('href' => $bits[$i]));
60:	$token[] = new HTMLPurifier_Token_Text($bits[$i]);
61:	$token[] = new HTMLPurifier_Token_End('a');
62:	}
63:	}
64:	}
65:	}
66:
67:	// vim: et sw=4 sts=4
68:

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