plugin: new method to compare plugins

Instead of providing a method to get if a plugin is requesting to get sorted
last, we provide a way to comparing two plugins, compatible with the
GCompareFunc required in g_list_sort().

src/mm-plugin-manager.c

@@ -549,25 +549,6 @@ out:
     return plugin;
 }
 
-static gint
-compare_plugins (const MMPlugin *plugin_a,
-                 const MMPlugin *plugin_b)
-{
-    /* The order of the plugins in the list is the same order used to check
-     * whether the plugin can manage a given modem:
-     *  - First, modems that will check vendor ID from udev.
-     *  - Then, modems that report to be sorted last (those which will check
-     *    vendor ID also from the probed ones..
-     */
-    if (mm_plugin_get_sort_last (plugin_a) &&
-        !mm_plugin_get_sort_last (plugin_b))
-        return 1;
-    if (!mm_plugin_get_sort_last (plugin_a) &&
-        mm_plugin_get_sort_last (plugin_b))
-        return -1;
-    return 0;
-}
-
 static void
 found_plugin (MMPlugin *plugin)
 {
@@ -628,7 +609,7 @@ load_plugins (MMPluginManager *self,
 
     /* Sort last plugins that request it */
     self->priv->plugins = g_slist_sort (self->priv->plugins,
-                                        (GCompareFunc)compare_plugins);
+                                        (GCompareFunc)mm_plugin_cmp);
 
     /* Make sure the generic plugin is last */
     if (generic_plugin)

src/mm-plugin.c

@@ -88,19 +88,36 @@ enum {
 
 /*****************************************************************************/
 
-const char *
+const gchar *
 mm_plugin_get_name (MMPlugin *self)
 {
     return self->priv->name;
 }
 
-gboolean
+/*****************************************************************************/
-mm_plugin_get_sort_last (const MMPlugin *self)
+
+gint
+mm_plugin_cmp (const MMPlugin *plugin_a,
+               const MMPlugin *plugin_b)
 {
     /* If we have any post-probing filter, we need to sort the plugin last */
-    return (self->priv->vendor_strings || self->priv->product_strings);
+#define SORT_LAST(self) (self->priv->vendor_strings || self->priv->product_strings)
+
+    /* The order of the plugins in the list is the same order used to check
+     * whether the plugin can manage a given modem:
+     *  - First, modems that will check vendor ID from udev.
+     *  - Then, modems that report to be sorted last (those which will check
+     *    vendor ID also from the probed ones..
+     */
+    if (SORT_LAST (plugin_a) && !SORT_LAST (plugin_b))
+        return 1;
+    if (!SORT_LAST (plugin_a) && SORT_LAST (plugin_b))
+        return -1;
+    return 0;
 }
 
+/*****************************************************************************/
+
 static gboolean
 device_file_exists (const char *name)
 {

src/mm-plugin.h

@@ -96,8 +96,9 @@ struct _MMPluginClass {
 
 GType mm_plugin_get_type (void);
 
-const char *mm_plugin_get_name      (MMPlugin *plugin);
+const gchar *mm_plugin_get_name (MMPlugin *plugin);
-gboolean    mm_plugin_get_sort_last (const MMPlugin *plugin);
+gint         mm_plugin_cmp      (const MMPlugin *plugin_a,
+                                 const MMPlugin *plugin_b);
 
 void                   mm_plugin_supports_port        (MMPlugin *plugin,
                                                        GObject *device,