Ticket #26825: 26825.diff

src/wp-admin/includes/media.php

@@ -2747 +2747 @@
 
         if ( preg_match( '#^(audio|video)#', $post->post_mime_type ) ):
 
+                if ( empty( $meta ) && file_exists( $file ) ): ?>
+                <div class="misc-pub-section">
+                        <a class="button" id="media-read-metadata" href="<?php echo admin_url( 'post.php?action=generate-metadata&post=' . $post->ID ) ?>"><?php _e( 'Read Metadata From File' ) ?></a>
+                </div>
+                <?php else:
                 /**
                  * Filter the audio and video metadata fields to be shown in the publish meta box.
                  *
@@ -2822 +2827 @@
                         endif;
                 endforeach;
 
+                endif;
         endif;
 
         if ( $media_dims ) : ?>

src/wp-admin/post.php

@@ -311 +311 @@
         exit();
         break;
 
+case 'generate-metadata':
+        if ( ! current_user_can( 'edit_post', $post_id ) ) {
+                wp_die( __( 'You are not allowed to edit this item.' ) );
+        }
+
+        $post = get_post( $post_id );
+        if ( 'attachment' !== $post->post_type ) {
+                wp_die( __( 'You can only generate metadata for an attachment.' ) );
+        }
+
+        $file = get_attached_file( $post_id );
+        if ( empty( $file ) ) {
+                wp_die( __( 'This file does not exist.' ) );
+        }
+
+        wp_update_attachment_metadata( $post_id, wp_generate_attachment_metadata( $post_id, $file ) );
+
+        wp_redirect( add_query_arg( 'action', 'edit', remove_query_arg( 'action' ) ) );
+        exit();
+        break;
+
 default:
         wp_redirect( admin_url('edit.php') );
         exit();