Add Twig extensions

app/Resources/views/macros/utils.html.twig

@@ -0,0 +1,21 @@
+{#http://stackoverflow.com/a/15303004#}
+{% macro bytesToSize(bytes) %}
+    {% spaceless %}
+        {% set kilobyte = 1024 %}
+        {% set megabyte = kilobyte * 1024 %}
+        {% set gigabyte = megabyte * 1024 %}
+        {% set terabyte = gigabyte * 1024 %}
+
+        {% if bytes < kilobyte %}
+            {{ bytes ~ ' B' }}
+        {% elseif bytes < megabyte %}
+            {{ (bytes / kilobyte)|number_format(2, '.') ~ ' KB' }}
+        {% elseif bytes < gigabyte %}
+            {{ (bytes / megabyte)|number_format(2, '.') ~ ' MB' }}
+        {% elseif bytes < terabyte %}
+            {{ (bytes / gigabyte)|number_format(2, '.') ~ ' GB' }}
+        {% else %}
+            {{ (bytes / terabyte)|number_format(2, '.') ~ ' TB' }}
+        {% endif %}
+    {% endspaceless %}
+{% endmacro %}

src/AppBundle/Twig/AppExtension.php

@@ -30,6 +30,13 @@ class AppExtension extends \Twig_Extension
         ];
     }
 
+    public function getFunctions() {
+        return [
+            new \Twig_SimpleFunction('remoteSize', [$this, 'remoteSize']),
+            new \Twig_SimpleFunction('remoteFilename', [$this, 'remoteFilename']),
+        ];
+    }
+
     public function partImage(Part $part, Color $color = null)
     {
         return '/parts/ldraw/'.($color ? $color->getId():'-1').'/'.$part->getNumber().'.png';
@@ -39,4 +46,22 @@ class AppExtension extends \Twig_Extension
     {
         return '/sets/'.strtolower($set->getNumber()).'.jpg';
     }
+
+    public function remoteSize($url) {
+        $ch = curl_init($url);
+
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
+        curl_setopt($ch, CURLOPT_HEADER, TRUE);
+        curl_setopt($ch, CURLOPT_NOBODY, TRUE);
+
+        $data = curl_exec($ch);
+        $size = curl_getinfo($ch, CURLINFO_CONTENT_LENGTH_DOWNLOAD);
+
+        curl_close($ch);
+        return $size;
+    }
+
+    public function remoteFilename($url) {
+       return basename($url);
+    }
 }