[gssdp/gssdp_1.0] sniffer: Modify ui file search order

[Jens Georg <jensgeorg src gnome org>]

commit 90f42ba3267f6ed130bf9a818f02d04e9d01d45e
Author: Jens Georg <mail jensge org>
Date:   Fri Oct 26 20:57:00 2018 +0200

    sniffer: Modify ui file search order
    
    Search order is as follows:
     - Current dir
     - Next to the executable
     - Install path
    
    Also change the way to look for the file. Just use
    gtk_builder_add_from_file and have it fail when the path does not exist

 tools/gssdp-device-sniffer.c | 32 +++++++++++++++-----------------
 1 file changed, 15 insertions(+), 17 deletions(-)
---
diff --git a/tools/gssdp-device-sniffer.c b/tools/gssdp-device-sniffer.c
index 96442d6..0a16bc5 100644
--- a/tools/gssdp-device-sniffer.c
+++ b/tools/gssdp-device-sniffer.c
@@ -581,7 +581,6 @@ init_ui (gint *argc, gchar **argv[])
 {
         GtkWidget *main_window;
         gint window_width, window_height;
-        const gchar *ui_path = NULL;
         GError *error = NULL;
         GOptionContext *context;
         double w, h;
@@ -596,25 +595,24 @@ init_ui (gint *argc, gchar **argv[])
                 return FALSE;
         }
 
-        /* Try to fetch the ui file from the CWD first */
-        ui_path = UI_FILE;
-        if (!g_file_test (ui_path, G_FILE_TEST_EXISTS)) {
-                /* Then Try to fetch it from the system path */
-                ui_path = UI_DIR "/" UI_FILE;
+        builder = gtk_builder_new();
 
-                if (!g_file_test (ui_path, G_FILE_TEST_EXISTS))
-                        ui_path = NULL;
-        }
-        
-        if (ui_path == NULL) {
-                g_critical ("Unable to load the GUI file %s", UI_FILE);
-                return FALSE;
+        /* Try to fetch the ui file from the CWD first */
+        if (gtk_builder_add_from_file (builder, UI_FILE, NULL) == 0) {
+            /* Apparently not. let's check next to the executable */
+            char *path = g_strconcat (g_path_get_dirname (*argv[0]), G_DIR_SEPARATOR_S, UI_FILE, NULL);
+            if (gtk_builder_add_from_file (builder, path, NULL) == 0) {
+                g_clear_pointer (&path, g_free);
+                /* Also not... Check the install path */
+                if (gtk_builder_add_from_file (builder, UI_DIR G_DIR_SEPARATOR_S UI_FILE, NULL) == 0) {
+                    g_critical ("Unable to load the GUI file %s", UI_FILE);
+
+                    return FALSE;
+                }
+            }
+            g_clear_pointer (&path, g_free);
         }
 
-        builder = gtk_builder_new();
-        if (gtk_builder_add_from_file(builder, ui_path, NULL) == 0)
-                return FALSE;
-
         main_window = GTK_WIDGET(gtk_builder_get_object (builder, "main-window"));
         g_assert (main_window != NULL);