str_list.h

/*
 * Copyright (C) 2017 OpenSIPS Solutions
 *
 * This file is part of opensips, a free SIP server.
 *
 * opensips 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
 *
 * opensips 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
 */

#ifndef __STR_LIST__
#define __STR_LIST__

#include <stdlib.h>

#include "str.h"
#include "lib/osips_malloc.h"
#include "lib/list.h"
#include "ut.h"

typedef struct _str_list {
	str s;
	struct _str_list *next;
} str_list;

typedef struct _str_dlist {
	str s;
	struct list_head list;
} str_dlist;

static inline void _free_str_list(str_list *list,
                        osips_free_t free_item, osips_free_t free_str)
{
	str_list *prev;

	while (list) {
		prev = list;
		list = list->next;

		if (free_str)
			free_str(prev->s.s);

		if (free_item)
			free_item(prev);
	}
}

#define free_pkg_str_list(list) \
	_free_str_list(list, osips_pkg_free, NULL)

#define free_shm_str_list(list) \
	_free_str_list(list, osips_shm_free, NULL)

static inline str_list *dup_shm_str_list(const str_list *list)
{
	str_list *item, *ret = NULL;
	const str_list *it;

	for (it = list; it; it = it->next) {
		item = shm_malloc(sizeof *item + it->s.len + 1);
		if (!item)
			goto oom;

		item->s.s = (char *)(item + 1);
		str_cpy(&item->s, &it->s);
		item->s.s[item->s.len] = '\0';

		item->next = NULL;
		add_last(item, ret);
	}

	return ret;

oom:
	LM_ERR("oom\n");
	free_shm_str_list(ret);
	return NULL;
}

static inline void _free_str_dlist(struct list_head *dlist,
                        osips_free_t free_item, osips_free_t free_str)
{
	struct list_head *_, *__;
	str_dlist *item;

	list_for_each_safe(_, __, dlist) {
		item = list_entry(_, str_dlist, list);
		if (free_str)
			free_str(item->s.s);

		if (free_item)
			free_item(item);
	}
}

#define free_pkg_str_dlist(list) \
	_free_str_dlist(list, osips_pkg_free, osips_pkg_free)

#define free_shm_str_dlist(list) \
	_free_str_dlist(list, osips_shm_free, osips_shm_free)

#endif /* __STR_LIST__ */