diff options
Diffstat (limited to 'lib/ephy-module-loader.c')
| -rw-r--r-- | lib/ephy-module-loader.c | 207 |
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 index 000000000..99c452927 --- /dev/null +++ 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 *) ®ister_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); +} |