void-packages/lib/orphans.c
Juan RP 5ace634ade Remove unused headers.
--HG--
extra : convert_revision : f845161efa23a3c8c9f18f4febc7087347b0cff2
2009-08-12 07:48:03 +02:00

153 lines
4 KiB
C

/*-
* Copyright (c) 2009 Juan Romero Pardines.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <xbps_api.h>
struct orphan_pkg {
SIMPLEQ_ENTRY(orphan_pkg) chain;
prop_dictionary_t dict;
const char *pkgname;
};
static SIMPLEQ_HEAD(orphan_head, orphan_pkg) orphan_list =
SIMPLEQ_HEAD_INITIALIZER(orphan_list);
static int
find_orphan_pkg(prop_object_t obj, void *arg, bool *loop_done)
{
prop_array_t reqby;
prop_object_t obj2;
prop_object_iterator_t iter;
struct orphan_pkg *orphan;
char *pkgname;
unsigned int ndep = 0, cnt = 0;
bool automatic = false;
(void)arg;
(void)loop_done;
if (!prop_dictionary_get_bool(obj, "automatic-install", &automatic))
return EINVAL;
if (!automatic)
return 0;
reqby = prop_dictionary_get(obj, "requiredby");
if (reqby == NULL)
return 0;
else if (prop_object_type(reqby) != PROP_TYPE_ARRAY)
return EINVAL;
if ((cnt = prop_array_count(reqby)) == 0)
goto add_orphan;
iter = prop_array_iterator(reqby);
if (iter == NULL)
return errno;
while ((obj2 = prop_object_iterator_next(iter)) != NULL) {
pkgname = xbps_get_pkg_name(prop_string_cstring_nocopy(obj2));
SIMPLEQ_FOREACH(orphan, &orphan_list, chain) {
if (strcmp(orphan->pkgname, pkgname) == 0) {
ndep++;
break;
}
}
free(pkgname);
}
prop_object_iterator_release(iter);
if (ndep != cnt)
return 0;
add_orphan:
orphan = NULL;
orphan = malloc(sizeof(struct orphan_pkg));
if (orphan == NULL)
return errno;
prop_dictionary_get_cstring_nocopy(obj, "pkgname", &orphan->pkgname);
orphan->dict = prop_dictionary_copy(obj);
SIMPLEQ_INSERT_TAIL(&orphan_list, orphan, chain);
return 0;
}
static void
cleanup(void)
{
struct orphan_pkg *orphan;
while ((orphan = SIMPLEQ_FIRST(&orphan_list)) != NULL) {
SIMPLEQ_REMOVE(&orphan_list, orphan, orphan_pkg, chain);
prop_object_release(orphan->dict);
free(orphan);
}
}
prop_array_t
xbps_find_orphan_packages(void)
{
prop_array_t array;
prop_dictionary_t dict;
struct orphan_pkg *orphan;
int rv = 0;
if ((dict = xbps_prepare_regpkgdb_dict()) == NULL)
return NULL;
/*
* Find out all orphan packages by looking at the
* regpkgdb dictionary and we must do that in reverse order.
*/
rv = xbps_callback_array_iter_reverse_in_dict(dict, "packages",
find_orphan_pkg, NULL);
if (rv != 0) {
cleanup();
return NULL;
}
/*
* Prepare an array with all packages previously found. We
* do this in that way to do a reverse order in which the
* packages were installed.
*/
array = prop_array_create();
if (array == NULL) {
cleanup();
return NULL;
}
while ((orphan = SIMPLEQ_FIRST(&orphan_list)) != NULL) {
prop_array_add(array, orphan->dict);
SIMPLEQ_REMOVE(&orphan_list, orphan, orphan_pkg, chain);
prop_object_release(orphan->dict);
free(orphan);
}
return array;
}