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Long Term Support Release
Differences Between: [Versions 310 and 401] [Versions 311 and 401] [Versions 39 and 401] [Versions 400 and 401]
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
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