mirror of
https://github.com/moparisthebest/pacman
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14fd1e63a2
This takes in the list and a list item, and does the pointer dance necessary to remove it from the list regardless of whether it is first, last, or somewhere in the middle. It is useful for callers that already know what item needs to be removed and have a pointer to it rather than doing a search by data that the plain alpm_list_remove() does. Refactor alpm_list_remove() to use this function as well. Signed-off-by: Dan McGee <dan@archlinux.org>
91 lines
3.6 KiB
C
91 lines
3.6 KiB
C
/*
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* alpm_list.h
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*
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* Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org>
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* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _ALPM_LIST_H
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#define _ALPM_LIST_H
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#include <stdlib.h> /* size_t */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Linked list type used by libalpm.
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*
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* It is exposed so front ends can use it to prevent the need to reimplement
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* lists of their own; however, it is not required that the front end uses
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* it.
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*/
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typedef struct __alpm_list_t {
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/** data held by the list node */
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void *data;
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/** pointer to the previous node */
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struct __alpm_list_t *prev;
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/** pointer to the next node */
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struct __alpm_list_t *next;
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} alpm_list_t;
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#define FREELIST(p) do { alpm_list_free_inner(p, free); alpm_list_free(p); p = NULL; } while(0)
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typedef void (*alpm_list_fn_free)(void *); /* item deallocation callback */
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typedef int (*alpm_list_fn_cmp)(const void *, const void *); /* item comparison callback */
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/* allocation */
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void alpm_list_free(alpm_list_t *list);
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void alpm_list_free_inner(alpm_list_t *list, alpm_list_fn_free fn);
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/* item mutators */
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alpm_list_t *alpm_list_add(alpm_list_t *list, void *data);
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alpm_list_t *alpm_list_add_sorted(alpm_list_t *list, void *data, alpm_list_fn_cmp fn);
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alpm_list_t *alpm_list_join(alpm_list_t *first, alpm_list_t *second);
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alpm_list_t *alpm_list_mmerge(alpm_list_t *left, alpm_list_t *right, alpm_list_fn_cmp fn);
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alpm_list_t *alpm_list_msort(alpm_list_t *list, size_t n, alpm_list_fn_cmp fn);
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alpm_list_t *alpm_list_remove_item(alpm_list_t *haystack, alpm_list_t *item);
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alpm_list_t *alpm_list_remove(alpm_list_t *haystack, const void *needle, alpm_list_fn_cmp fn, void **data);
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alpm_list_t *alpm_list_remove_str(alpm_list_t *haystack, const char *needle, char **data);
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alpm_list_t *alpm_list_remove_dupes(const alpm_list_t *list);
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alpm_list_t *alpm_list_strdup(const alpm_list_t *list);
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alpm_list_t *alpm_list_copy(const alpm_list_t *list);
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alpm_list_t *alpm_list_copy_data(const alpm_list_t *list, size_t size);
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alpm_list_t *alpm_list_reverse(alpm_list_t *list);
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/* item accessors */
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alpm_list_t *alpm_list_first(const alpm_list_t *list);
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alpm_list_t *alpm_list_nth(const alpm_list_t *list, size_t n);
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alpm_list_t *alpm_list_next(const alpm_list_t *list);
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alpm_list_t *alpm_list_last(const alpm_list_t *list);
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void *alpm_list_getdata(const alpm_list_t *entry);
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/* misc */
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size_t alpm_list_count(const alpm_list_t *list);
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void *alpm_list_find(const alpm_list_t *haystack, const void *needle, alpm_list_fn_cmp fn);
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void *alpm_list_find_ptr(const alpm_list_t *haystack, const void *needle);
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char *alpm_list_find_str(const alpm_list_t *haystack, const char *needle);
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alpm_list_t *alpm_list_diff(const alpm_list_t *lhs, const alpm_list_t *rhs, alpm_list_fn_cmp fn);
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void alpm_list_diff_sorted(const alpm_list_t *left, const alpm_list_t *right,
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alpm_list_fn_cmp fn, alpm_list_t **onlyleft, alpm_list_t **onlyright);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ALPM_LIST_H */
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/* vim: set ts=2 sw=2 noet: */
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