Add upstream plugins

Signed-off-by: Adrian Nöthlich <git@promasu.tech>

wp-content/plugins/all-in-one-event-calendar/lib/upload/size-determiner.php

@@ -0,0 +1,44 @@
+<?php
+
+/**
+ * Upload size determiner
+ *
+ * @author       Time.ly Network, Inc.
+ * @since        2.0
+ * @package      Ai1EC
+ * @subpackage   Ai1EC.Upload
+ */
+class Ai1ec_Upload_Size_Determiner_Utility extends Ai1ec_Base {
+
+    /**
+     * Returns the maximum upload file size in bytes
+     *
+     * @param string $size Human readable size
+     *
+     * @return int Maximum upload file size
+     */
+    public function get_maximum_upload_file_size_bytes( $size ) {
+        $converter_utility = $this->_registry->get( 'size.converter' );
+
+        $maximum_size = $converter_utility->convert_hr_to_bytes( $size );
+
+        if ( $maximum_size <= 0  ||  $maximum_size > wp_max_upload_size() ) {
+            $maximum_size = wp_max_upload_size();
+        }
+
+        return $maximum_size;
+    }
+
+    /**
+     * Returns human readable maximum upload file size
+     *
+     * @param string $size Human readable size
+     *
+     * @return string Human readable maximum upload file size
+     */
+    public function get_maximum_upload_file_size_string( $size ) {
+        $size_string = size_format( $this->get_maximum_upload_file_size_bytes( $size ), 2 );
+
+        return $size_string;
+    }
+}