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(char *target)
  35 {
  36         pmpkg_t *info;
  37         pmdb_t *db_local = alpm_option_get_localdb();
  38         alpm_list_t *p;
  39
  40         if((info = alpm_db_get_pkg(db_local, target)) != NULL) {
  41                 if(alpm_remove_pkg(info) == -1) {
  42                         pm_fprintf(stderr, PM_LOG_ERROR, "'%s': %s\n", target, alpm_strerrorlast());
  43                         return(-1);
  44                 }
  45                 return(0);
  46         }
  47
  48                 /* fallback to group */
  49         pmgrp_t *grp = alpm_db_readgrp(db_local, target);
  50         if(grp == NULL) {
  51                 pm_fprintf(stderr, PM_LOG_ERROR, "'%s': target not found\n", target);
  52                 return(-1);
  53         }
  54         for(p = alpm_grp_get_pkgs(grp); p; p = alpm_list_next(p)) {
  55                 pmpkg_t *pkg = alpm_list_getdata(p);
  56                 if(alpm_remove_pkg(pkg) == -1) {
  57                         pm_fprintf(stderr, PM_LOG_ERROR, "'%s': %s\n", target, alpm_strerrorlast());
  58                         return(-1);
  59                 }
  60         }
  61         return(0);
  62 }
  63
  64 /**
  65  * @brief Remove a specified list of packages.
  66  *
  67  * @param targets a list of packages (as strings) to remove from the system
  68  *
  69  * @return 0 on success, 1 on failure
  70  */
  71 int pacman_remove(alpm_list_t *targets)
  72 {
  73         int retval = 0;
  74         alpm_list_t *i, *data = NULL;
  75
  76         if(targets == NULL) {
  77                 pm_printf(PM_LOG_ERROR, _("no targets specified (use -h for help)\n"));
  78                 return(1);
  79         }
  80
  81         /* Step 0: create a new transaction */
  82         if(trans_init(config->flags) == -1) {
  83                 return(1);
  84         }
  85
  86         /* Step 1: add targets to the created transaction */
  87         for(i = targets; i; i = alpm_list_next(i)) {
  88                 char *target = alpm_list_getdata(i);
  89                 char *targ = strchr(target, '/');
  90                 if(targ && strncmp(target, "local", 5) == 0) {
  91                         targ++;
  92                 } else {
  93                         targ = target;
  94                 }
  95                 if(remove_target(targ) == -1) {
  96                         retval = 1;
  97                         goto cleanup;
  98                 }
  99         }
 100
 101         /* Step 2: prepare the transaction based on its type, targets and flags */
 102         if(alpm_trans_prepare(&data) == -1) {
 103                 pm_fprintf(stderr, PM_LOG_ERROR, _("failed to prepare transaction (%s)\n"),
 104                         alpm_strerrorlast());
 105                 switch(pm_errno) {
 106                         case PM_ERR_PKG_INVALID_ARCH:
 107                                 for(i = data; i; i = alpm_list_next(i)) {
 108                                         char *pkg = alpm_list_getdata(i);
 109                                         printf(_(":: package %s does not have a valid architecture\n"), pkg);
 110                                 }
 111                                 break;
 112                         case PM_ERR_UNSATISFIED_DEPS:
 113                                 for(i = data; i; i = alpm_list_next(i)) {
 114                                         pmdepmissing_t *miss = alpm_list_getdata(i);
 115                                         pmdepend_t *dep = alpm_miss_get_dep(miss);
 116                                         char *depstring = alpm_dep_compute_string(dep);
 117                                         printf(_(":: %s: requires %s\n"), alpm_miss_get_target(miss),
 118                                                         depstring);
 119                                         free(depstring);
 120                                 }
 121                                 FREELIST(data);
 122                                 break;
 123                         default:
 124                                 break;
 125                 }
 126                 retval = 1;
 127                 goto cleanup;
 128         }
 129
 130         /* Search for holdpkg in target list */
 131         int holdpkg = 0;
 132         for(i = alpm_trans_get_remove(); i; i = alpm_list_next(i)) {
 133                 pmpkg_t *pkg = alpm_list_getdata(i);
 134                 if(alpm_list_find_str(config->holdpkg, alpm_pkg_get_name(pkg))) {
 135                         pm_printf(PM_LOG_WARNING, _("%s is designated as a HoldPkg.\n"),
 136                                                         alpm_pkg_get_name(pkg));
 137                         holdpkg = 1;
 138                 }
 139         }
 140         if(holdpkg && (noyes(_("HoldPkg was found in target list. Do you want to continue?")) == 0)) {
 141                 retval = 1;
 142                 goto cleanup;
 143         }
 144
 145         /* Step 3: actually perform the removal */
 146         alpm_list_t *pkglist = alpm_trans_get_remove();
 147         if(pkglist == NULL) {
 148                 printf(_(" there is nothing to do\n"));
 149                 goto cleanup; /* we are done */
 150         }
 151
 152         if(config->print) {
 153                 print_packages(pkglist);
 154                 goto cleanup;
 155         }
 156
 157         /* print targets and ask user confirmation */
 158         display_targets(pkglist, 0);
 159         printf("\n");
 160         if(yesno(_("Do you want to remove these packages?")) == 0) {
 161                 retval = 1;
 162                 goto cleanup;
 163         }
 164
 165         if(alpm_trans_commit(NULL) == -1) {
 166                 pm_fprintf(stderr, PM_LOG_ERROR, _("failed to commit transaction (%s)\n"),
 167                         alpm_strerrorlast());
 168                 retval = 1;
 169         }
 170
 171         /* Step 4: release transaction resources */
 172 cleanup:
 173         if(trans_release() == -1) {
 174                 retval = 1;
 175         }
 176         return(retval);
 177 }
 178
 179 /* vim: set ts=2 sw=2 noet: */