src/util/cleanupdelta.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

/*
 *  cleanupdelta.c : return list of unused delta in a given sync database
 *
 *  Copyright (c) 2010 Pacman Development Team <pacman-dev@archlinux.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 "config.h"

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

#include <alpm.h>
#include <alpm_list.h>

#define BASENAME "cleanupdelta"

static void cleanup(int signum) {
  if(alpm_release() == -1) {
    fprintf(stderr, "error releasing alpm: %s\n", alpm_strerrorlast());
  }

  exit(signum);
}

static void output_cb(pmloglevel_t level, char *fmt, va_list args)
{
  if(strlen(fmt)) {
    switch(level) {
      case PM_LOG_ERROR: printf("error: "); break;
      case PM_LOG_WARNING: printf("warning: "); break;
      //case PM_LOG_DEBUG: printf("debug: "); break;
      default: return;
    }
    vprintf(fmt, args);
  }
}


static void checkpkgs(alpm_list_t *pkglist)
{
  alpm_list_t *i, *j;
  for(i = pkglist; i; i = alpm_list_next(i)) {
    pmpkg_t *pkg = alpm_list_getdata(i);
    alpm_list_t *unused = alpm_pkg_unused_deltas(pkg);
    for(j = unused; j; j = alpm_list_next(j)) {
      char *delta = alpm_list_getdata(j);
      printf("%s\n", delta);
    }
    alpm_list_free(unused);
  }
}

static void checkdbs(char *dbpath, alpm_list_t *dbnames) {
  char syncdbpath[PATH_MAX];
  pmdb_t *db = NULL;
  alpm_list_t *i;

  for(i = dbnames; i; i = alpm_list_next(i)) {
    char *dbname = alpm_list_getdata(i);
    snprintf(syncdbpath, PATH_MAX, "%s/sync/%s", dbpath, dbname);
    db = alpm_db_register_sync(dbname);
    if(db == NULL) {
      fprintf(stderr, "error: could not register sync database (%s)\n",
          alpm_strerrorlast());
      return;
    }
    checkpkgs(alpm_db_get_pkgcache(db));
  }

}

static void usage(void) {
  fprintf(stderr, "usage:\n");
  fprintf(stderr,
      "\t%s [-b <pacman db>] core extra ... : check the listed sync databases\n", BASENAME);
  exit(1);
}

int main(int argc, char *argv[])
{
  char *dbpath = DBPATH;
  int a = 1;
  alpm_list_t *dbnames = NULL;

  while(a < argc) {
    if(strcmp(argv[a], "-b") == 0) {
      if(++a < argc) {
        dbpath = argv[a];
      } else {
        usage();
      }
    } else if(strcmp(argv[a], "-h") == 0 ||
        strcmp(argv[a], "--help") == 0 ) {
      usage();
    } else {
      dbnames = alpm_list_add(dbnames, argv[a]);
    }
    a++;
  }

  if(!dbnames) {
    usage();
  }

  if(alpm_initialize() == -1) {
    fprintf(stderr, "cannot initialize alpm: %s\n", alpm_strerrorlast());
    return(1);
  }

  /* let us get log messages from libalpm */
  alpm_option_set_logcb(output_cb);

  alpm_option_set_dbpath(dbpath);

  checkdbs(dbpath,dbnames);
  alpm_list_free(dbnames);

  cleanup(0);
}

/* vim: set ts=2 sw=2 noet: */