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pacman/lib/libalpm/db.h
Chantry Xavier f43805d875 Cleanup usages of alpm_list_find and alpm_list_remove.
* remove obsolete and unused *_cmp helper functions like deppkg_cmp and
_alpm_grp_cmp

* new alpm_list_remove_str function, used 6 times in handle.c

* remove _alpm_prov_cmp / _alpm_db_whatprovides and replace them by
a more general alpm_find_pkg_satisfiers with a cleaner implementation.
before: alpm_db_whatprovides(db, targ)
after: alpm_find_pkg_satisfiers(alpm_db_getpkgcache(db), targ)

* remove satisfycmp and replace alpm_list_find + satisfycmp usage by
_alpm_find_dep_satisfiers.
before : alpm_list_find(_alpm_db_get_pkgcache(db), dep, satisfycmp)
after : _alpm_find_dep_satisfiers(_alpm_db_get_pkgcache(db), dep)

* remove _alpm_pkgname_pkg_cmp, which was used with alpm_list_remove, and
use _alpm_pkg_find + alpm_list_remove with _alpm_pkg_cmp instead.

This commit actually get rids of all complicated and asymmetric _cmp
functions. I first thought these functions were worth it, be caused it
allowed us to reuse list_find and list_remove. But this was at the detriment
of the clarity and also the ease of use of these functions, dangerous
because of their asymmetricity.

Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
2008-05-13 15:49:02 -05:00

69 lines
2.1 KiB
C

/*
* db.h
*
* Copyright (c) 2002-2007 by Judd Vinet <jvinet@zeroflux.org>
* Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
* Copyright (c) 2006 by Miklos Vajna <vmiklos@frugalware.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_DB_H
#define _ALPM_DB_H
#include "alpm.h"
#include <limits.h>
#include <time.h>
/* Database entries */
typedef enum _pmdbinfrq_t {
INFRQ_BASE = 0x01,
INFRQ_DESC = 0x02,
INFRQ_DEPENDS = 0x04,
INFRQ_FILES = 0x08,
INFRQ_SCRIPTLET = 0x10,
INFRQ_DELTAS = 0x20,
/* ALL should be sum of all above */
INFRQ_ALL = 0x3F
} pmdbinfrq_t;
/* Database */
struct __pmdb_t {
char *path;
char *treename;
void *handle;
alpm_list_t *pkgcache;
alpm_list_t *grpcache;
alpm_list_t *servers;
};
/* db.c, database general calls */
pmdb_t *_alpm_db_new(const char *dbpath, const char *treename);
void _alpm_db_free(pmdb_t *db);
int _alpm_db_cmp(const void *db1, const void *db2);
alpm_list_t *_alpm_db_search(pmdb_t *db, const alpm_list_t *needles);
pmdb_t *_alpm_db_register_local(void);
pmdb_t *_alpm_db_register_sync(const char *treename);
/* be.c, backend specific calls */
int _alpm_db_open(pmdb_t *db);
void _alpm_db_close(pmdb_t *db);
pmpkg_t *_alpm_db_scan(pmdb_t *db, const char *target);
int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq);
int _alpm_db_write(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq);
int _alpm_db_remove(pmdb_t *db, pmpkg_t *info);
#endif /* _ALPM_DB_H */
/* vim: set ts=2 sw=2 noet: */