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-rw-r--r--lib/ephy-module-loader.c207
1 files changed, 207 insertions, 0 deletions
diff --git a/lib/ephy-module-loader.c b/lib/ephy-module-loader.c
new file mode 100644
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+++ b/lib/ephy-module-loader.c
@@ -0,0 +1,207 @@
+/*
+ * Copyright (C) 2003 Marco Pesenti Gritti
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * $Id$
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "ephy-module-loader.h"
+#include "ephy-file-helpers.h"
+#include "ephy-debug.h"
+
+#include <gmodule.h>
+
+typedef struct _EphyModuleLoaderClass EphyModuleLoaderClass;
+
+struct _EphyModuleLoaderClass
+{
+ GTypeModuleClass parent_class;
+};
+
+struct _EphyModuleLoader
+{
+ GTypeModule parent_instance;
+
+ GModule *library;
+
+ char *path;
+ GType type;
+};
+
+typedef GType (*register_module_fn) (GTypeModule *);
+
+static void ephy_module_loader_init (EphyModuleLoader *action);
+static void ephy_module_loader_class_init (EphyModuleLoaderClass *class);
+static void ephy_module_loader_finalize (GObject *object);
+
+static GObjectClass *parent_class = NULL;
+
+GType
+ephy_module_loader_get_type (void)
+{
+ static GType type = 0;
+
+ if (!type)
+ {
+ static const GTypeInfo type_info =
+ {
+ sizeof (EphyModuleLoaderClass),
+ (GBaseInitFunc) NULL,
+ (GBaseFinalizeFunc) NULL,
+ (GClassInitFunc) ephy_module_loader_class_init,
+ (GClassFinalizeFunc) NULL,
+ NULL,
+ sizeof (EphyModuleLoader),
+ 0, /* n_preallocs */
+ (GInstanceInitFunc) ephy_module_loader_init,
+ };
+
+ type = g_type_register_static (G_TYPE_TYPE_MODULE,
+ "EphyModuleLoader",
+ &type_info, 0);
+ }
+
+ return type;
+}
+
+EphyModuleLoader *
+ephy_module_loader_new (const char *path)
+{
+ EphyModuleLoader *result;
+
+ if (path == NULL || path[0] == '\0')
+ {
+ return NULL;
+ }
+
+ result = g_object_new (EPHY_TYPE_MODULE_LOADER, NULL);
+
+ g_type_module_set_name (G_TYPE_MODULE (result), path);
+ result->path = g_strdup (path);
+
+ if (!g_type_module_use (G_TYPE_MODULE (result)))
+ {
+ g_object_unref (result);
+
+ return NULL;
+ }
+
+ return result;
+}
+
+static gboolean
+ephy_module_loader_load (GTypeModule *module)
+{
+ EphyModuleLoader *loader = EPHY_MODULE_LOADER (module);
+ char *module_path;
+ register_module_fn register_module;
+
+ LOG ("ephy_module_loader_load %s", loader->path)
+
+ module_path = g_strdup (loader->path);
+ loader->library = g_module_open (module_path, 0);
+ g_free (module_path);
+
+ if (!loader->library)
+ {
+ g_warning (g_module_error());
+
+ return FALSE;
+ }
+
+ /* extract symbols from the lib */
+ if (!g_module_symbol (loader->library, "register_module",
+ (void *) &register_module))
+ {
+ g_warning (g_module_error());
+ g_module_close (loader->library);
+
+ return FALSE;
+ }
+
+ g_assert (register_module != NULL);
+
+ loader->type = register_module (module);
+
+ if (loader->type == 0)
+ {
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static void
+ephy_module_loader_unload (GTypeModule *module)
+{
+ EphyModuleLoader *loader = EPHY_MODULE_LOADER (module);
+
+ g_module_close (loader->library);
+
+ loader->library = NULL;
+ loader->type = 0;
+}
+
+static void
+ephy_module_loader_class_init (EphyModuleLoaderClass *class)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (class);
+ GTypeModuleClass *loader_class = G_TYPE_MODULE_CLASS (class);
+
+ parent_class = (GObjectClass *) g_type_class_peek_parent (class);
+
+ object_class->finalize = ephy_module_loader_finalize;
+
+ loader_class->load = ephy_module_loader_load;
+ loader_class->unload = ephy_module_loader_unload;
+}
+
+static void
+ephy_module_loader_init (EphyModuleLoader *loader)
+{
+ LOG ("EphyModuleLoader initialising")
+
+ loader->library = NULL;
+ loader->path = NULL;
+ loader->type = 0;
+}
+
+static void
+ephy_module_loader_finalize (GObject *object)
+{
+ EphyModuleLoader *loader = EPHY_MODULE_LOADER (object);
+
+ LOG ("EphyModuleLoader finalising")
+
+ g_free (loader->path);
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+GObject *
+ephy_module_loader_factory (EphyModuleLoader *loader)
+{
+ if (loader->type == 0)
+ {
+ return NULL;
+ }
+
+ return g_object_new (loader->type, NULL);
+}