aleph1.co.uk Git - yaffs-website/blob - vendor/cebe/markdown/inline/EmphStrongTrait.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 /**
  11  * Adds inline emphasizes and strong elements
  12  */
  13 trait EmphStrongTrait
  14 {
  15         /**
  16          * Parses empathized and strong elements.
  17          * @marker _
  18          * @marker *
  19          */
  20         protected function parseEmphStrong($text)
  21         {
  22                 $marker = $text[0];
  23
  24                 if (!isset($text[1])) {
  25                         return [['text', $text[0]], 1];
  26                 }
  27
  28                 if ($marker == $text[1]) { // strong
  29                         if ($marker == '*' && preg_match('/^[*]{2}((?:[^*]|[*][^*]*[*])+?)[*]{2}(?![*])/s', $text, $matches) ||
  30                                 $marker == '_' && preg_match('/^__((?:[^_]|_[^_]*_)+?)__(?!_)/us', $text, $matches)) {
  31
  32                                 return [
  33                                         [
  34                                                 'strong',
  35                                                 $this->parseInline($matches[1]),
  36                                         ],
  37                                         strlen($matches[0])
  38                                 ];
  39                         }
  40                 } else { // emph
  41                         if ($marker == '*' && preg_match('/^[*]((?:[^*]|[*][*][^*]+?[*][*])+?)[*](?![*])/s', $text, $matches) ||
  42                                 $marker == '_' && preg_match('/^_((?:[^_]|__[^_]*__)+?)_(?!_)\b/us', $text, $matches)) {
  43                                 return [
  44                                         [
  45                                                 'emph',
  46                                                 $this->parseInline($matches[1]),
  47                                         ],
  48                                         strlen($matches[0])
  49                                 ];
  50                         }
  51                 }
  52                 return [['text', $text[0]], 1];
  53         }
  54
  55         protected function renderStrong($block)
  56         {
  57                 return '<strong>' . $this->renderAbsy($block[1]) . '</strong>';
  58         }
  59
  60         protected function renderEmph($block)
  61         {
  62                 return '<em>' . $this->renderAbsy($block[1]) . '</em>';
  63         }
  64 }