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/*
* Copyright (C) 2003 Marco Pesenti Gritti
* Copyright (C) 2003, 2004 Christian Persch
*
* 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.
*
* $Id$
*/
#include "config.h"
#include "ephy-shlib-loader.h"
#include "ephy-loader.h"
#include "ephy-module.h"
#include "ephy-debug.h"
#include <string.h>
#define DATA_KEY "EphyShlibLoader::LoaderData"
typedef struct
{
EphyModule *module;
GObject *object;
} LoaderData;
#define EPHY_SHLIB_LOADER_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_SHLIB_LOADER, EphyShlibLoaderPrivate))
struct _EphyShlibLoaderPrivate
{
GSList *data;
};
static void ephy_shlib_loader_class_init (EphyShlibLoaderClass *klass);
static void ephy_shlib_loader_iface_init (EphyLoaderIface *iface);
static void ephy_shlib_loader_init (EphyShlibLoader *loader);
static GObjectClass *parent_class = NULL;
GType
ephy_shlib_loader_get_type (void)
{
static GType type = 0;
if (G_UNLIKELY (type == 0))
{
const GTypeInfo our_info =
{
sizeof (EphyShlibLoaderClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) ephy_shlib_loader_class_init,
NULL,
NULL, /* class_data */
sizeof (EphyShlibLoader),
0, /* n_preallocs */
(GInstanceInitFunc) ephy_shlib_loader_init
};
const GInterfaceInfo loader_info =
{
(GInterfaceInitFunc) ephy_shlib_loader_iface_init,
NULL,
NULL
};
type = g_type_register_static (G_TYPE_OBJECT,
"EphyShlibLoader",
&our_info, 0);
g_type_add_interface_static (type,
EPHY_TYPE_LOADER,
&loader_info);
}
return type;
}
static void
free_loader_data (LoaderData *data)
{
g_return_if_fail (data != NULL);
/* data->module must NOT be unreffed! */
if (data->object != NULL)
{
g_object_unref (data->object);
}
g_free (data);
}
static void
ephy_shlib_loader_init (EphyShlibLoader *loader)
{
loader->priv = EPHY_SHLIB_LOADER_GET_PRIVATE (loader);
LOG ("EphyShlibLoader initialising");
}
static void
ephy_shlib_loader_finalize (GObject *object)
{
EphyShlibLoader *loader = EPHY_SHLIB_LOADER (object);
LOG ("EphyShlibLoader finalising");
g_slist_foreach (loader->priv->data, (GFunc) free_loader_data, NULL);
g_slist_free (loader->priv->data);
parent_class->finalize (object);
}
static int
find_library (const LoaderData *data,
const char *library)
{
return strcmp (ephy_module_get_path (data->module), library);
}
static int
find_object (const LoaderData *data,
const GObject *object)
{
return data->object != object;
}
static GObject *
impl_get_object (EphyLoader *eloader,
GKeyFile *keyfile)
{
EphyShlibLoader *loader = EPHY_SHLIB_LOADER (eloader);
GSList *l;
LoaderData *data = NULL;
char *library;
gboolean resident;
g_return_val_if_fail (keyfile != NULL, NULL);
library = g_key_file_get_string (keyfile, "Loader", "Library", NULL);
if (library == NULL)
{
g_warning ("NULL library name!\n");
return NULL;
}
resident = g_key_file_get_boolean (keyfile, "Loader", "Resident", NULL);
l = g_slist_find_custom (loader->priv->data, library,
(GCompareFunc) find_library);
if (l != NULL)
{
data = l->data;
g_return_val_if_fail (data != NULL, NULL);
if (data->object != NULL)
{
g_free (library);
return g_object_ref (data->object);
}
}
else
{
data = g_new0 (LoaderData, 1);
loader->priv->data = g_slist_prepend (loader->priv->data, data);
}
if (data->module == NULL)
{
data->module = ephy_module_new (library, resident);
}
g_return_val_if_fail (data->object == NULL, data->object);
if (g_type_module_use (G_TYPE_MODULE (data->module)) == FALSE)
{
g_free (library);
g_warning ("Could not load extension file at %s\n",
ephy_module_get_path (data->module));
return NULL;
}
data->object = ephy_module_new_object (data->module);
g_type_module_unuse (G_TYPE_MODULE (data->module));
if (data->object != NULL)
{
g_object_set_data (G_OBJECT (data->object), DATA_KEY, data);
}
g_free (library);
return data->object;
}
static void
impl_release_object (EphyLoader *eloader,
GObject *object)
{
EphyShlibLoader *loader = EPHY_SHLIB_LOADER (eloader);
GSList *l;
LoaderData *data;
l = g_slist_find_custom (loader->priv->data, object,
(GCompareFunc) find_object);
g_return_if_fail (l != NULL);
data = l->data;
g_object_unref (data->object);
data->object = NULL;
}
static void
ephy_shlib_loader_iface_init (EphyLoaderIface *iface)
{
iface->type = "shlib";
iface->get_object = impl_get_object;
iface->release_object = impl_release_object;
}
static void
ephy_shlib_loader_class_init (EphyShlibLoaderClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = ephy_shlib_loader_finalize;
g_type_class_add_private (object_class, sizeof (EphyShlibLoaderPrivate));
}
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