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/*
* remove.c
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <alpm.h>
#include <alpm_list.h>
/* pacman */
#include "pacman.h"
#include "util.h"
#include "callback.h"
#include "conf.h"
extern pmdb_t *db_local;
/* Free the current transaction and print an error if unsuccessful */
static int remove_cleanup(void)
{
int ret = alpm_trans_release();
if(ret != 0) {
pm_printf(PM_LOG_ERROR, _("failed to release transaction (%s)\n"),
alpm_strerrorlast());
ret = 1;
}
return(ret);
}
/**
* @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)
{
alpm_list_t *i, *data = NULL, *finaltargs = NULL;
int retval = 0;
if(targets == NULL) {
pm_printf(PM_LOG_ERROR, _("no targets specified (use -h for help)\n"));
return(1);
}
/* If the target is a group, ask if its packages should be removed
* (the library can't remove groups for now)
*/
for(i = targets; i; i = alpm_list_next(i)) {
pmgrp_t *grp = alpm_db_readgrp(db_local, alpm_list_getdata(i));
if(grp) {
int all;
const alpm_list_t *p, *pkgnames = alpm_grp_get_pkgs(grp);
printf(_(":: group %s:\n"), alpm_grp_get_name(grp));
list_display(" ", pkgnames);
all = yesno(_(" Remove whole content? [Y/n] "));
for(p = pkgnames; p; p = alpm_list_next(p)) {
char *pkg = alpm_list_getdata(p);
if(all || yesno(_(":: Remove %s from group %s? [Y/n] "), pkg, (char *)alpm_list_getdata(i))) {
finaltargs = alpm_list_add(finaltargs, strdup(pkg));
}
}
} else {
/* not a group, so add it to the final targets */
finaltargs = alpm_list_add(finaltargs, strdup(alpm_list_getdata(i)));
}
}
/* Step 1: create a new transaction */
if(alpm_trans_init(PM_TRANS_TYPE_REMOVE, config->flags,
cb_trans_evt, cb_trans_conv, cb_trans_progress) == -1) {
fprintf(stderr, _("error: failed to init transaction (%s)\n"),
alpm_strerrorlast());
if(pm_errno == PM_ERR_HANDLE_LOCK) {
printf(_(" if you're sure a package manager is not already\n"
" running, you can remove %s.\n"), alpm_option_get_lockfile());
}
FREELIST(finaltargs);
return(1);
}
/* add targets to the created transaction */
printf(_("loading package data... "));
for(i = finaltargs; i; i = alpm_list_next(i)) {
char *targ = alpm_list_getdata(i);
if(alpm_trans_addtarget(targ) == -1) {
printf("failed.\n");
fprintf(stderr, _("error: failed to add target '%s' (%s)\n"), targ,
alpm_strerrorlast());
remove_cleanup();
FREELIST(finaltargs);
return(1);
}
}
printf(_("done.\n"));
/* Step 2: prepare the transaction based on its type, targets and flags */
if(alpm_trans_prepare(&data) == -1) {
fprintf(stderr, _("error: failed to prepare transaction (%s)\n"),
alpm_strerrorlast());
switch(pm_errno) {
case PM_ERR_UNSATISFIED_DEPS:
for(i = data; i; i = alpm_list_next(i)) {
pmdepmissing_t *miss = alpm_list_getdata(i);
pmdepend_t *dep = alpm_miss_get_dep(miss);
char *depstring = alpm_dep_get_string(dep);
printf(_(":: %s: requires %s\n"), alpm_miss_get_target(miss),
depstring);
free(depstring);
}
FREELIST(data);
break;
default:
break;
}
remove_cleanup();
FREELIST(finaltargs);
return(1);
}
/* Warn user in case of dangerous operation */
if(config->flags & PM_TRANS_FLAG_RECURSE ||
config->flags & PM_TRANS_FLAG_CASCADE) {
/* list transaction targets */
alpm_list_t *lst = NULL;
/* create a new list of package names only */
for(i = alpm_trans_get_pkgs(); i; i = alpm_list_next(i)) {
pmpkg_t *pkg = alpm_list_getdata(i);
lst = alpm_list_add(lst, strdup(alpm_pkg_get_name(pkg)));
}
printf("\n");
list_display(_("Targets:"), lst);
FREELIST(lst);
/* get confirmation */
if(yesno(_("\nDo you want to remove these packages? [Y/n] ")) == 0) {
remove_cleanup();
FREELIST(finaltargs);
return(1);
}
printf("\n");
}
/* Step 3: actually perform the removal */
if(alpm_trans_commit(NULL) == -1) {
fprintf(stderr, _("error: failed to commit transaction (%s)\n"),
alpm_strerrorlast());
remove_cleanup();
FREELIST(finaltargs);
return(1);
}
/* Step 4: release transaction resources */
retval = remove_cleanup();
FREELIST(finaltargs);
return(retval);
}
/* vim: set ts=2 sw=2 noet: */
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