www.aleph1.co.uk Git - yaffs-website/blob - vendor/cebe/markdown/inline/UrlLinkTrait.php

   1 <?php
   2 /**
   3  * @copyright Copyright (c) 2014 Carsten Brandt
   4  * @license https://github.com/cebe/markdown/blob/master/LICENSE
   5  * @link https://github.com/cebe/markdown#readme
   6  */
   7
   8 namespace cebe\markdown\inline;
   9
  10 // work around https://github.com/facebook/hhvm/issues/1120
  11 defined('ENT_HTML401') || define('ENT_HTML401', 0);
  12
  13 /**
  14  * Adds auto linking for URLs
  15  */
  16 trait UrlLinkTrait
  17 {
  18         /**
  19          * Parses urls and adds auto linking feature.
  20          * @marker http
  21          * @marker ftp
  22          */
  23         protected function parseUrl($markdown)
  24         {
  25                 $pattern = <<<REGEXP
  26                         /(?(R) # in case of recursion match parentheses
  27                                  \(((?>[^\s()]+)|(?R))*\)
  28                         |      # else match a link with title
  29                                 ^(https?|ftp):\/\/(([^\s()]+)|(?R))+(?<![\.,:;\'"!\?\s])
  30                         )/x
  31 REGEXP;
  32
  33                 if (!in_array('parseLink', $this->context) && preg_match($pattern, $markdown, $matches)) {
  34                         return [
  35                                 ['autoUrl', $matches[0]],
  36                                 strlen($matches[0])
  37                         ];
  38                 }
  39                 return [['text', substr($markdown, 0, 4)], 4];
  40         }
  41
  42         protected function renderAutoUrl($block)
  43         {
  44                 $href = htmlspecialchars($block[1], ENT_COMPAT | ENT_HTML401, 'UTF-8');
  45                 $text = htmlspecialchars(urldecode($block[1]), ENT_NOQUOTES | ENT_SUBSTITUTE, 'UTF-8');
  46                 return "<a href=\"$href\">$text</a>";
  47         }
  48 }