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/*
* peas-utils.c
* This file is part of libpeas
*
* Copyright (C) 2010 Steve Frécinaux
*
* libpeas is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* libpeas 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include <gobject/gvaluecollector.h>
#include "peas-utils.h"
static const gchar *all_plugin_loaders[] = {"c", "lua5.1",
"python", "python3"};
static const gint conflicting_plugin_loaders[PEAS_UTILS_N_LOADERS][2] = {
{ -1, -1 }, /* c => {} */
{ -1, -1 }, /* lua5.1 => {} */
{ 3, -1 }, /* python => { python3 } */
{ 2, -1 } /* python3 => { python } */
};
G_STATIC_ASSERT (G_N_ELEMENTS (all_plugin_loaders) == PEAS_UTILS_N_LOADERS);
G_STATIC_ASSERT (G_N_ELEMENTS (conflicting_plugin_loaders) == PEAS_UTILS_N_LOADERS);
static void
add_all_interfaces (GType iface_type,
GPtrArray *type_structs)
{
GType *prereq;
guint n_prereq;
guint i;
g_ptr_array_add (type_structs,
g_type_default_interface_ref (iface_type));
prereq = g_type_interface_prerequisites (iface_type, &n_prereq);
for (i = 0; i < n_prereq; ++i)
{
if (G_TYPE_IS_INTERFACE (prereq[i]))
add_all_interfaces (prereq[i], type_structs);
}
g_free (prereq);
}
static GParamSpec *
find_param_spec_in_interfaces (GPtrArray *type_structs,
const gchar *name)
{
guint i;
for (i = 0; i < type_structs->len; ++i)
{
GParamSpec *pspec;
pspec = g_object_interface_find_property (g_ptr_array_index (type_structs, i),
name);
if (pspec != NULL)
return pspec;
}
return NULL;
}
gboolean
peas_utils_valist_to_parameter_list (GType iface_type,
const gchar *first_property,
va_list args,
GParameter **params,
guint *n_params)
{
GPtrArray *type_structs;
const gchar *name;
guint n_allocated_params;
g_return_val_if_fail (G_TYPE_IS_INTERFACE (iface_type), FALSE);
type_structs = g_ptr_array_new ();
g_ptr_array_set_free_func (type_structs,
(GDestroyNotify) g_type_default_interface_unref);
add_all_interfaces (iface_type, type_structs);
*n_params = 0;
n_allocated_params = 16;
*params = g_new0 (GParameter, n_allocated_params);
name = first_property;
while (name)
{
gchar *error_msg = NULL;
GParamSpec *pspec = find_param_spec_in_interfaces (type_structs, name);
if (!pspec)
{
g_warning ("%s: type '%s' has no property named '%s'",
G_STRFUNC, g_type_name (iface_type), name);
goto error;
}
if (*n_params >= n_allocated_params)
{
n_allocated_params += 16;
*params = g_renew (GParameter, *params, n_allocated_params);
memset (*params + (n_allocated_params - 16),
0, sizeof (GParameter) * 16);
}
(*params)[*n_params].name = name;
G_VALUE_COLLECT_INIT (&(*params)[*n_params].value, pspec->value_type,
args, 0, &error_msg);
(*n_params)++;
if (error_msg)
{
g_warning ("%s: %s", G_STRFUNC, error_msg);
g_free (error_msg);
goto error;
}
name = va_arg (args, gchar*);
}
g_ptr_array_unref (type_structs);
return TRUE;
error:
for (; *n_params > 0; --(*n_params))
g_value_unset (&(*params)[*n_params].value);
g_free (*params);
g_ptr_array_unref (type_structs);
return FALSE;
}
gint
peas_utils_get_loader_id (const gchar *loader)
{
gint i;
gsize len;
gchar lowercase[32];
len = strlen (loader);
/* No loader has a name that long */
if (len >= G_N_ELEMENTS (lowercase))
return -1;
for (i = 0; i < len; ++i)
lowercase[i] = g_ascii_tolower (loader[i]);
lowercase[len] = '\0';
for (i = 0; i < G_N_ELEMENTS (all_plugin_loaders); ++i)
{
if (g_strcmp0 (lowercase, all_plugin_loaders[i]) == 0)
return i;
}
return -1;
}
const gchar *
peas_utils_get_loader_from_id (gint loader_id)
{
g_return_val_if_fail (loader_id >= 0, NULL);
g_return_val_if_fail (loader_id < PEAS_UTILS_N_LOADERS, NULL);
return all_plugin_loaders[loader_id];
}
const gint *
peas_utils_get_conflicting_loaders_from_id (gint loader_id)
{
g_return_val_if_fail (loader_id >= 0, NULL);
g_return_val_if_fail (loader_id < PEAS_UTILS_N_LOADERS, NULL);
return conflicting_plugin_loaders[loader_id];
}
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