cx/lib/markdown.php

   1 <?php
   2
   3 cx_require('lib', 'images.php');
   4 cx_require('lib', 'url.php');
   5 cx_require('third_party', 'parsedown', 'Parsedown.php');
   6
   7 class ExtendedParsedown extends Parsedown {
   8         public function __construct() {
   9                 $this->InlineTypes['{'][] = 'BlogImage';
  10                 $this->InlineTypes['{'][] = 'Youtube';
  11                 $this->inlineMarkerList .= '{';
  12         }
  13
  14         protected function inlineBlogImage($excerpt) {
  15                 if (preg_match('/^{img:([^}]+)}/', $excerpt['text'], $matches)) {
  16                         $image_id = $matches[1];
  17                         $image = cx_images_find_image($image_id);
  18
  19                         if ($image == null) {
  20                                 return;
  21                         }
  22
  23                         $permalink = '/data/images/' . $image->url;
  24
  25                         return array(
  26                                 'extent' => strlen($matches[0]) + 1,
  27                                 'element' => array(
  28                                         'name' => 'img',
  29                                         'attributes' => array(
  30                                                 'src' => cx_url_site($permalink),
  31                                                 'alt' => $image->alt_text,
  32                                         ),
  33                                 ),
  34                         );
  35                 }
  36         }
  37
  38         protected function inlineYoutube($excerpt) {
  39                 if (preg_match('/^{yt:([^}]+)}/', $excerpt['text'], $matches)) {
  40                         $video_id = $matches[1];
  41
  42                         if ($video_id == null) {
  43                                 return;
  44                         }
  45
  46                         return array(
  47                                 'extent' => strlen($matches[0]) + 1,
  48                                 'element' => array(
  49                                         'name' => 'iframe',
  50                                         'text' => '',
  51                                         'attributes' => array(
  52                                                 'id' => "ytplayer",
  53                                                 'type' => "text/html",
  54                                                 'width' => "640",
  55                                                 'height' => "360",
  56                                                 'src' => "https://www.youtube.com/embed/" . $video_id,
  57                                                 'frameborder' => "0",
  58                                                 'loading' => "lazy",
  59                                                 'referrerpolicy' => "no-referrer",
  60                                                 'sandbox' => "allow-same-origin allow-scripts",
  61                                         ),
  62                                 ),
  63                         );
  64                 }
  65         }
  66 }
  67
  68 function cx_markdown_generate_html($markdown) {
  69         static $Parsedown = new ExtendedParsedown();
  70         return $Parsedown->text($markdown);
  71 }