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/*
* alpm_list.h
*
* Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org>
* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef _ALPM_LIST_H
#define _ALPM_LIST_H
#include <stdlib.h> /* size_t */
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Linked list type used by libalpm.
*
* It is exposed so front ends can use it to prevent the need to reimplement
* lists of their own; however, it is not required that the front end uses
* it.
*/
typedef struct __alpm_list_t {
/** data held by the list node */
void *data;
/** pointer to the previous node */
struct __alpm_list_t *prev;
/** pointer to the next node */
struct __alpm_list_t *next;
} alpm_list_t;
#define FREELIST(p) do { alpm_list_free_inner(p, free); alpm_list_free(p); p = NULL; } while(0)
typedef void (*alpm_list_fn_free)(void *); /* item deallocation callback */
typedef int (*alpm_list_fn_cmp)(const void *, const void *); /* item comparison callback */
/* allocation */
void alpm_list_free(alpm_list_t *list);
void alpm_list_free_inner(alpm_list_t *list, alpm_list_fn_free fn);
/* item mutators */
alpm_list_t *alpm_list_add(alpm_list_t *list, void *data);
alpm_list_t *alpm_list_add_sorted(alpm_list_t *list, void *data, alpm_list_fn_cmp fn);
alpm_list_t *alpm_list_join(alpm_list_t *first, alpm_list_t *second);
alpm_list_t *alpm_list_mmerge(alpm_list_t *left, alpm_list_t *right, alpm_list_fn_cmp fn);
alpm_list_t *alpm_list_msort(alpm_list_t *list, size_t n, alpm_list_fn_cmp fn);
alpm_list_t *alpm_list_remove_item(alpm_list_t *haystack, alpm_list_t *item);
alpm_list_t *alpm_list_remove(alpm_list_t *haystack, const void *needle, alpm_list_fn_cmp fn, void **data);
alpm_list_t *alpm_list_remove_str(alpm_list_t *haystack, const char *needle, char **data);
alpm_list_t *alpm_list_remove_dupes(const alpm_list_t *list);
alpm_list_t *alpm_list_strdup(const alpm_list_t *list);
alpm_list_t *alpm_list_copy(const alpm_list_t *list);
alpm_list_t *alpm_list_copy_data(const alpm_list_t *list, size_t size);
alpm_list_t *alpm_list_reverse(alpm_list_t *list);
/* item accessors */
alpm_list_t *alpm_list_first(const alpm_list_t *list);
alpm_list_t *alpm_list_nth(const alpm_list_t *list, size_t n);
alpm_list_t *alpm_list_next(const alpm_list_t *list);
alpm_list_t *alpm_list_previous(const alpm_list_t *list, const alpm_list_t *node);
alpm_list_t *alpm_list_last(const alpm_list_t *list);
void *alpm_list_getdata(const alpm_list_t *entry);
/* misc */
size_t alpm_list_count(const alpm_list_t *list);
void *alpm_list_find(const alpm_list_t *haystack, const void *needle, alpm_list_fn_cmp fn);
void *alpm_list_find_ptr(const alpm_list_t *haystack, const void *needle);
char *alpm_list_find_str(const alpm_list_t *haystack, const char *needle);
alpm_list_t *alpm_list_diff(const alpm_list_t *lhs, const alpm_list_t *rhs, alpm_list_fn_cmp fn);
void alpm_list_diff_sorted(const alpm_list_t *left, const alpm_list_t *right,
alpm_list_fn_cmp fn, alpm_list_t **onlyleft, alpm_list_t **onlyright);
#ifdef __cplusplus
}
#endif
#endif /* _ALPM_LIST_H */
/* vim: set ts=2 sw=2 noet: */
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