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/*
* remove.c
*
* Copyright (c) 2006-2014 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/>.
*/
#include <fnmatch.h>
#include <stdlib.h>
#include <stdio.h>
#include <alpm.h>
#include <alpm_list.h>
/* pacman */
#include "pacman.h"
#include "util.h"
#include "conf.h"
static int fnmatch_cmp(const void *pattern, const void *string)
{
return fnmatch(pattern, string, 0);
}
static int remove_target(const char *target)
{
alpm_pkg_t *pkg;
alpm_db_t *db_local = alpm_get_localdb(config->handle);
alpm_list_t *p;
if((pkg = alpm_db_get_pkg(db_local, target)) != NULL) {
if(alpm_remove_pkg(config->handle, pkg) == -1) {
pm_printf(ALPM_LOG_ERROR, "'%s': %s\n", target,
alpm_strerror(alpm_errno(config->handle)));
return -1;
}
config->explicit_removes = alpm_list_add(config->explicit_removes, pkg);
return 0;
}
/* fallback to group */
alpm_group_t *grp = alpm_db_get_group(db_local, target);
if(grp == NULL) {
pm_printf(ALPM_LOG_ERROR, _("target not found: %s\n"), target);
return -1;
}
for(p = grp->packages; p; p = alpm_list_next(p)) {
pkg = p->data;
if(alpm_remove_pkg(config->handle, pkg) == -1) {
pm_printf(ALPM_LOG_ERROR, "'%s': %s\n", target,
alpm_strerror(alpm_errno(config->handle)));
return -1;
}
config->explicit_removes = alpm_list_add(config->explicit_removes, pkg);
}
return 0;
}
/**
* @brief Remove a specified list of packages.
*
* @param targets a list of packages (as strings) to remove from the system
*
* @return 0 on success, 1 on failure
*/
int pacman_remove(alpm_list_t *targets)
{
int retval = 0;
alpm_list_t *i, *data = NULL;
if(targets == NULL) {
pm_printf(ALPM_LOG_ERROR, _("no targets specified (use -h for help)\n"));
return 1;
}
/* Step 0: create a new transaction */
if(trans_init(config->flags, 0) == -1) {
return 1;
}
/* Step 1: add targets to the created transaction */
for(i = targets; i; i = alpm_list_next(i)) {
char *target = i->data;
char *targ = strchr(target, '/');
if(targ && strncmp(target, "local", 5) == 0) {
targ++;
} else {
targ = target;
}
if(remove_target(targ) == -1) {
retval = 1;
}
}
if(retval == 1) {
goto cleanup;
}
/* Step 2: prepare the transaction based on its type, targets and flags */
if(alpm_trans_prepare(config->handle, &data) == -1) {
alpm_errno_t err = alpm_errno(config->handle);
pm_printf(ALPM_LOG_ERROR, _("failed to prepare transaction (%s)\n"),
alpm_strerror(err));
switch(err) {
case ALPM_ERR_UNSATISFIED_DEPS:
for(i = data; i; i = alpm_list_next(i)) {
alpm_depmissing_t *miss = i->data;
char *depstring = alpm_dep_compute_string(miss->depend);
colon_printf(_("%s: requires %s\n"), miss->target, depstring);
free(depstring);
}
break;
default:
break;
}
FREELIST(data);
retval = 1;
goto cleanup;
}
/* Search for holdpkg in target list */
int holdpkg = 0;
for(i = alpm_trans_get_remove(config->handle); i; i = alpm_list_next(i)) {
alpm_pkg_t *pkg = i->data;
if(alpm_list_find(config->holdpkg, alpm_pkg_get_name(pkg), fnmatch_cmp)) {
pm_printf(ALPM_LOG_WARNING, _("%s is designated as a HoldPkg.\n"),
alpm_pkg_get_name(pkg));
holdpkg = 1;
}
}
if(holdpkg && (noyes(_("HoldPkg was found in target list. Do you want to continue?")) == 0)) {
retval = 1;
goto cleanup;
}
/* Step 3: actually perform the removal */
alpm_list_t *pkglist = alpm_trans_get_remove(config->handle);
if(pkglist == NULL) {
printf(_(" there is nothing to do\n"));
goto cleanup; /* we are done */
}
if(config->print) {
print_packages(pkglist);
goto cleanup;
}
/* print targets and ask user confirmation */
display_targets();
printf("\n");
if(yesno(_("Do you want to remove these packages?")) == 0) {
retval = 1;
goto cleanup;
}
if(alpm_trans_commit(config->handle, &data) == -1) {
pm_printf(ALPM_LOG_ERROR, _("failed to commit transaction (%s)\n"),
alpm_strerror(alpm_errno(config->handle)));
retval = 1;
}
FREELIST(data);
/* Step 4: release transaction resources */
cleanup:
if(trans_release() == -1) {
retval = 1;
}
return retval;
}
/* vim: set ts=2 sw=2 noet: */
|
