[virt-tools-list] [PATCH] remote-viewer: add a default extension to screenshot filenames

[Julien Ropé]

From: Julien ROPE <jrope at redhat.com>

When doing a screenshot, if the user provides a filename without a file
extension, an error occurs because the image format could not be determined.
This patch adds a .png extension to such filenames, so that there is a default
file format for screenshots.

Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1752514

Signed-off-by: Julien Ropé <jrope at redhat.com>
---
 src/virt-viewer-window.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/virt-viewer-window.c b/src/virt-viewer-window.c
index 4c08423..f58ebad 100644
--- a/src/virt-viewer-window.c
+++ b/src/virt-viewer-window.c
@@ -1069,6 +1069,14 @@ virt_viewer_window_menu_file_screenshot(GtkWidget *menu G_GNUC_UNUSED,
         GError *error = NULL;
 
         filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER (dialog));
+        if (g_strrstr(filename, ".") == NULL) {
+            // no extension provided: add the .png default
+            char *tmp_filename ;
+            tmp_filename = g_strdup_printf("%s.png", filename) ;
+            g_free(filename) ;
+            filename = tmp_filename ;
+        }
+
         if (!virt_viewer_window_save_screenshot(self, filename, &error)) {
             virt_viewer_app_simple_message_dialog(self->priv->app,
                                                   error->message);
-- 
2.21.0