Custom markdown for inserting images

[cx.git] / cx / lib / markdown.php

diff --git a/cx/lib/markdown.php b/cx/lib/markdown.php
new file mode 100644 (file)
index 0000000..8cdc235
--- /dev/null
+++ b/cx/lib/markdown.php
@@ -0,0 +1,41 @@
+<?php
+
+cx_require('lib', 'images.php');
+cx_require('lib', 'url.php');
+cx_require('third_party', 'parsedown', 'Parsedown.php');
+
+class ExtendedParsedown extends Parsedown {
+       public function __construct() {
+               $this->InlineTypes['{'][]= 'BlogImage';
+               $this->inlineMarkerList .= '{';
+       }
+
+       protected function inlineBlogImage($excerpt) {
+               if (preg_match('/^{img:([^}]+)}/', $excerpt['text'], $matches)) {
+                       $image_id = $matches[1];
+                       $image = cx_images_find_image($image_id);
+
+                       if ($image == null) {
+                               return;
+                       }
+
+                       $permalink = '/data/images/' . $image->url;
+
+                       return array(
+                               'extent' => strlen($matches[0]) + 1, 
+                               'element' => array(
+                                       'name' => 'img',
+                                       'attributes' => array(
+                                               'src' => cx_url($permalink),
+                                               'alt' => $image->alt_text,
+                                       ),
+                               ),
+                       );
+               }
+       }
+}
+
+function cx_markdown_generate_html($markdown) {
+       static $Parsedown = new ExtendedParsedown();
+       return $Parsedown->text($markdown);
+}