/* $Id$ 
 *
 * Lasso - A free implementation of the Liberty Alliance specifications.
 *
 * Copyright (C) 2004-2007 Entr'ouvert
 * http://lasso.entrouvert.org
 * 
 * Authors: See AUTHORS file in top-level directory.
 *
 * 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 of the License, 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
 */

#ifndef __LASSO_UTILS_H__
#define __LASSO_UTILS_H__

/* Assignment and list appending */
#define lasso_assign_string(dest,src) \
	{ \
		void *t = g_strdup(src);\
		if (dest) g_free(dest); \
		dest = t; \
	}

#define lasso_assign_new_string(dest,src) \
	{ \
		if (dest) g_free(dest); \
		dest = src; \
	}

#define lasso_assign_gobject(dest,src) \
	{ \
		if (src) \
			g_object_ref(src); \
		if (dest) \
			g_object_unref(dest); \
		dest = (void*)(src); \
	}

#define lasso_assign_new_gobject(dest,src) \
	{ \
		if (dest) \
			g_object_unref(dest); \
		dest = (void*)(src); \
	}

#define lasso_list_add_gobject(dest, src) \
	{ \
		dest = g_list_append(dest, g_object_ref(src)); \
	}

#define lasso_list_add_new_gobject(dest, src) \
	{ \
		dest = g_list_append(dest, src); \
	}

#define lasso_list_add(dest, src) \
	{ \
		dest = g_list_append(dest, src); \
	}

/* Freeing */
#define lasso_release(dest) \
	{ \
		if (dest) { \
			g_free(dest); dest = NULL; \
		} \
	}

#define lasso_release_full(dest, free_function) \
	{ \
		if (dest) { \
			free_function(dest); dest = NULL; \
		} \
	}

#define lasso_release_gobject(dest) \
	lasso_release_full(dest, g_object_unref)

#define lasso_release_string(dest) \
	lasso_release_full(dest, g_free)

#define lasso_release_list(dest) \
	lasso_release_full(dest, g_list_free)

#define lasso_release_list_of_full(dest, free_function) \
	{ \
		if (dest) { \
			g_list_foreach(dest, (GFunc)free_function, NULL); \
			g_list_free(dest); \
			dest = NULL; \
		} \
	}

#define lasso_release_list_of_strings(dest) \
	lasso_release_list_of_full(dest, g_free)

#define lasso_release_list_of_gobjects(dest) \
	lasso_release_list_of_full(dest, g_object_unref)

#define lasso_unlink_and_release_node(node) \
	lasso_release_list_of_full(dest, xmlFreeNode)

#define lasso_release_node(node) \
	lasso_release_full(node, xmlFreeNode)

#define lasso_release_doc(doc) \
	lasso_release_full(doc, xmlFreeDoc)

#define lasso_release_xmlchar(dest) \
	lasso_release_full(dest, xmlFree) 

#define lasso_release_encrypt_context(dest) \
	lasso_release_full(dest, xmlSecEncCtxDestroy)

#define lasso_release_signature_context(dest) \
	lasso_release_full(dest, xmlSecDSigCtxDestroy)

#define lasso_release_key_manager(dest) \
	lasso_release_full(dest, xmlSecKeysMngrDestroy)

/* Bad param handling */
#define lasso_return_val_if_invalid_param(kind, name, val) \
	g_return_val_if_fail(LASSO_IS_##kind(name), val)

#define lasso_bad_param(kind, name) \
	lasso_return_val_if_invalid_param(kind, name, \
		LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);

#define lasso_null_param(name) \
	g_return_val_if_fail(name != NULL, LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);

#define goto_exit_if_fail(condition, rc_value) \
	{\
		if (! (condition) ) {\
			rc = (rc_value); \
			goto exit; \
		} \
	}

/* Warn of a call to a deprecated function */
#define lasso_warn_deprecated() \
	g_warning("Function %s is deprecated !!!", G_STRFUNC)

#define OFTYPE(x) 

#endif /* __LASSO_UTILS_H__ */