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/*
* 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);
}
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