src/pacman/remove.c

   1 /*
   2  *  remove.c
   3  *
   4  *  Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org>
   5  *  Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25
  26 #include <alpm.h>
  27 #include <alpm_list.h>
  28
  29 /* pacman */
  30 #include "pacman.h"
  31 #include "util.h"
  32 #include "conf.h"
  33
  34 static int remove_target(const char *target)
  35 {
  36         pmpkg_t *info;
  37         alpm_db_t *db_local = alpm_option_get_localdb(config->handle);
  38         alpm_list_t *p;
  39
  40         if((info = alpm_db_get_pkg(db_local, target)) != NULL) {
  41                 if(alpm_remove_pkg(config->handle, info) == -1) {
  42                         pm_fprintf(stderr, PM_LOG_ERROR, "'%s': %s\n", target,
  43                                         alpm_strerror(alpm_errno(config->handle)));
  44                         return -1;
  45                 }
  46                 return 0;
  47         }
  48
  49                 /* fallback to group */
  50         pmgrp_t *grp = alpm_db_readgrp(db_local, target);
  51         if(grp == NULL) {
  52                 pm_fprintf(stderr, PM_LOG_ERROR, "'%s': target not found\n", target);
  53                 return -1;
  54         }
  55         for(p = grp->packages; p; p = alpm_list_next(p)) {
  56                 pmpkg_t *pkg = alpm_list_getdata(p);
  57                 if(alpm_remove_pkg(config->handle, pkg) == -1) {
  58                         pm_fprintf(stderr, PM_LOG_ERROR, "'%s': %s\n", target,
  59                                         alpm_strerror(alpm_errno(config->handle)));
  60                         return -1;
  61                 }
  62         }
  63         return 0;
  64 }
  65
  66 /**
  67  * @brief Remove a specified list of packages.
  68  *
  69  * @param targets a list of packages (as strings) to remove from the system
  70  *
  71  * @return 0 on success, 1 on failure
  72  */
  73 int pacman_remove(alpm_list_t *targets)
  74 {
  75         int retval = 0;
  76         alpm_list_t *i, *data = NULL;
  77
  78         if(targets == NULL) {
  79                 pm_printf(PM_LOG_ERROR, _("no targets specified (use -h for help)\n"));
  80                 return 1;
  81         }
  82
  83         /* Step 0: create a new transaction */
  84         if(trans_init(config->flags) == -1) {
  85                 return 1;
  86         }
  87
  88         /* Step 1: add targets to the created transaction */
  89         for(i = targets; i; i = alpm_list_next(i)) {
  90                 char *target = alpm_list_getdata(i);
  91                 char *targ = strchr(target, '/');
  92                 if(targ && strncmp(target, "local", 5) == 0) {
  93                         targ++;
  94                 } else {
  95                         targ = target;
  96                 }
  97                 if(remove_target(targ) == -1) {
  98                         retval = 1;
  99                         goto cleanup;
 100                 }
 101         }
 102
 103         /* Step 2: prepare the transaction based on its type, targets and flags */
 104         if(alpm_trans_prepare(config->handle, &data) == -1) {
 105                 enum _pmerrno_t err = alpm_errno(config->handle);
 106                 pm_fprintf(stderr, PM_LOG_ERROR, _("failed to prepare transaction (%s)\n"),
 107                         alpm_strerror(err));
 108                 switch(err) {
 109                         case PM_ERR_PKG_INVALID_ARCH:
 110                                 for(i = data; i; i = alpm_list_next(i)) {
 111                                         char *pkg = alpm_list_getdata(i);
 112                                         printf(_(":: package %s does not have a valid architecture\n"), pkg);
 113                                 }
 114                                 break;
 115                         case PM_ERR_UNSATISFIED_DEPS:
 116                                 for(i = data; i; i = alpm_list_next(i)) {
 117                                         pmdepmissing_t *miss = alpm_list_getdata(i);
 118                                         char *depstring = alpm_dep_compute_string(miss->depend);
 119                                         printf(_(":: %s: requires %s\n"), miss->target, depstring);
 120                                         free(depstring);
 121                                 }
 122                                 break;
 123                         default:
 124                                 break;
 125                 }
 126                 FREELIST(data);
 127                 retval = 1;
 128                 goto cleanup;
 129         }
 130
 131         /* Search for holdpkg in target list */
 132         int holdpkg = 0;
 133         for(i = alpm_trans_get_remove(config->handle); i; i = alpm_list_next(i)) {
 134                 pmpkg_t *pkg = alpm_list_getdata(i);
 135                 if(alpm_list_find_str(config->holdpkg, alpm_pkg_get_name(pkg))) {
 136                         pm_printf(PM_LOG_WARNING, _("%s is designated as a HoldPkg.\n"),
 137                                                         alpm_pkg_get_name(pkg));
 138                         holdpkg = 1;
 139                 }
 140         }
 141         if(holdpkg && (noyes(_("HoldPkg was found in target list. Do you want to continue?")) == 0)) {
 142                 retval = 1;
 143                 goto cleanup;
 144         }
 145
 146         /* Step 3: actually perform the removal */
 147         alpm_list_t *pkglist = alpm_trans_get_remove(config->handle);
 148         if(pkglist == NULL) {
 149                 printf(_(" there is nothing to do\n"));
 150                 goto cleanup; /* we are done */
 151         }
 152
 153         if(config->print) {
 154                 print_packages(pkglist);
 155                 goto cleanup;
 156         }
 157
 158         /* print targets and ask user confirmation */
 159         display_targets(pkglist, 0);
 160         printf("\n");
 161         if(yesno(_("Do you want to remove these packages?")) == 0) {
 162                 retval = 1;
 163                 goto cleanup;
 164         }
 165
 166         if(alpm_trans_commit(config->handle, &data) == -1) {
 167                 pm_fprintf(stderr, PM_LOG_ERROR, _("failed to commit transaction (%s)\n"),
 168                         alpm_strerror(alpm_errno(config->handle)));
 169                 retval = 1;
 170         }
 171
 172         FREELIST(data);
 173
 174         /* Step 4: release transaction resources */
 175 cleanup:
 176         if(trans_release() == -1) {
 177                 retval = 1;
 178         }
 179         return retval;
 180 }
 181
 182 /* vim: set ts=2 sw=2 noet: */