src/pacman/remove.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149

/*
 *  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 <stdlib.h>
#include <stdio.h>
#include <string.h>

#include <alpm.h>
/* pacman */
#include "util.h"
#include "log.h"
#include "list.h"
#include "trans.h"
#include "remove.h"
#include "conf.h"

extern config_t *config;

extern PM_DB *db_local;

int pacman_remove(list_t *targets)
{
  PM_LIST *data;
  list_t *i;
  list_t *finaltargs = NULL;

  if(targets == NULL) {
    return(0);
  }

  /* 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 = i->next) {
    PM_GRP *grp;

    grp = alpm_db_readgrp(db_local, i->data);
    if(grp) {
      PM_LIST *lp, *pkgnames;
      int all;

      pkgnames = alpm_grp_getinfo(grp, PM_GRP_PKGNAMES);

      MSG(NL, ":: group %s:\n", alpm_grp_getinfo(grp, PM_GRP_NAME));
      PM_LIST_display("   ", pkgnames);
      all = yesno("    Remove whole content? [Y/n] ");
      for(lp = alpm_list_first(pkgnames); lp; lp = alpm_list_next(lp)) {
        if(all || yesno(":: Remove %s from group %s? [Y/n] ", (char *)alpm_list_getdata(lp), i->data)) {
          finaltargs = list_add(finaltargs, strdup(alpm_list_getdata(lp)));
        }
      }
    } else {
      /* not a group, so add it to the final targets */
      finaltargs = list_add(finaltargs, strdup(i->data));
    }
  }

  /* Step 1: create a new transaction
   */
  if(alpm_trans_init(PM_TRANS_TYPE_REMOVE, config->flags, cb_trans_evt, cb_trans_conv) == -1) {
    ERR(NL, "failed to init transaction (%s)\n", alpm_strerror(pm_errno));
    goto error;
  }
  /* and add targets to it */
  for(i = finaltargs; i; i = i->next) {
    if(alpm_trans_addtarget(i->data) == -1) {
      ERR(NL, "failed to add target '%s' (%s)\n", (char *)i->data, alpm_strerror(pm_errno));
      goto error;
    }
  }

  /* Step 2: prepare the transaction based on its type, targets and flags
   */
  if(alpm_trans_prepare(&data) == -1) {
    PM_LIST *lp;
    ERR(NL, "failed to prepare transaction (%s)\n", alpm_strerror(pm_errno));
    switch(pm_errno) {
      case PM_ERR_UNSATISFIED_DEPS:
        for(lp = alpm_list_first(data); lp; lp = alpm_list_next(lp)) {
          PM_DEPMISS *miss = alpm_list_getdata(lp);
          MSG(NL, "  %s: is required by %s\n", alpm_dep_getinfo(miss, PM_DEP_TARGET), alpm_dep_getinfo(miss, PM_DEP_NAME));
        }
        alpm_list_free(data);
      break;
      default:
      break;
    }
    goto error;
  }

  /* Warn user in case of dangerous operation
   */
  if(config->flags & PM_TRANS_FLAG_RECURSE || config->flags & PM_TRANS_FLAG_CASCADE) {
    PM_LIST *lp;
    /* list transaction targets */
    i = NULL;
    for(lp = alpm_list_first(alpm_trans_getinfo(PM_TRANS_PACKAGES)); lp; lp = alpm_list_next(lp)) {
      PM_PKG *pkg = alpm_list_getdata(lp);
      i = list_add(i, strdup(alpm_pkg_getinfo(pkg, PM_PKG_NAME)));
    }
    list_display("\nTargets:", i);
    FREELIST(i);
    /* get confirmation */
    if(yesno("\nDo you want to remove these packages? [Y/n] ") == 0) {
      goto error;
    }
    MSG(NL, "\n");
  }

  /* Step 3: actually perform the removal
   */
  if(alpm_trans_commit(NULL) == -1) {
    ERR(NL, "failed to commit transaction (%s)\n", alpm_strerror(pm_errno));
    goto error;
  }

  /* Step 4: cleanup */
  FREELIST(finaltargs);

  return(0);

error:
  FREELIST(finaltargs);
  if(alpm_trans_release() == -1) {
    ERR(NL, "failed to release transaction (%s)\n", alpm_strerror(pm_errno));
  }

  return(1);
}

/* vim: set ts=2 sw=2 noet: */