[tracker-miners/wip/carlosg/shuffle-libtracker-miner: 56/115] libtracker-miner: Emit ::file-updated on file extension changes

[Carlos Garnacho <carlosg src gnome org>]

commit 860742ef9b4cbe20fc7db1cc9c1506247f403b55
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Jun 22 23:56:57 2018 +0200

    libtracker-miner: Emit ::file-updated on file extension changes
    
    We have no access to past/current GFileInfos, so detect changes in
    file extensions to handle the cases where a change of filename
    results in the file having a different mimetype.
    
    In these cases, ::file-updated should be emitted, so it gets the
    right rdf:types as per its new mimetype.

 src/libtracker-miner/tracker-file-notifier.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
---
diff --git a/src/libtracker-miner/tracker-file-notifier.c b/src/libtracker-miner/tracker-file-notifier.c
index 780a94004..d90a73325 100644
--- a/src/libtracker-miner/tracker-file-notifier.c
+++ b/src/libtracker-miner/tracker-file-notifier.c
@@ -1322,6 +1322,28 @@ monitor_item_deleted_cb (TrackerMonitor *monitor,
        g_object_unref (canonical);
 }
 
+static gboolean
+extension_changed (GFile *file1,
+                   GFile *file2)
+{
+       gchar *basename1, *basename2;
+       const gchar *ext1, *ext2;
+       gboolean changed;
+
+       basename1 = g_file_get_basename (file1);
+       basename2 = g_file_get_basename (file2);
+
+       ext1 = strrchr (basename1, '.');
+       ext2 = strrchr (basename2, '.');
+
+       changed = g_strcmp0 (ext1, ext2) != 0;
+
+       g_free (basename1);
+       g_free (basename2);
+
+       return changed;
+}
+
 static void
 monitor_item_moved_cb (TrackerMonitor *monitor,
                        GFile          *file,
@@ -1445,6 +1467,9 @@ monitor_item_moved_cb (TrackerMonitor *monitor,
                        }
 
                        g_signal_emit (notifier, signals[FILE_MOVED], 0, file, other_file);
+
+                       if (extension_changed (file, other_file))
+                               g_signal_emit (notifier, signals[FILE_UPDATED], 0, other_file, FALSE);
                }
 
                tracker_file_system_forget_files (priv->file_system, file,