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/*
* cleanupdelta.c : return list of unused delta in a given sync database
*
* Copyright (c) 2011-2017 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <alpm.h>
#include <alpm_list.h>
alpm_handle_t *handle = NULL;
static void cleanup(int signum)
{
if(handle && alpm_release(handle) == -1) {
fprintf(stderr, "error releasing alpm\n");
}
exit(signum);
}
__attribute__((format(printf, 2, 0)))
static void output_cb(alpm_loglevel_t level, const char *fmt, va_list args)
{
if(strlen(fmt)) {
switch(level) {
case ALPM_LOG_ERROR: printf("error: "); break;
case ALPM_LOG_WARNING: printf("warning: "); break;
/* case ALPM_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)) {
alpm_pkg_t *pkg = i->data;
alpm_list_t *unused = alpm_pkg_unused_deltas(pkg);
for(j = unused; j; j = alpm_list_next(j)) {
const char *delta = j->data;
printf("%s\n", delta);
}
alpm_list_free(unused);
}
}
static void checkdbs(alpm_list_t *dbnames)
{
alpm_db_t *db = NULL;
alpm_list_t *i;
const int siglevel = ALPM_SIG_DATABASE | ALPM_SIG_DATABASE_OPTIONAL;
for(i = dbnames; i; i = alpm_list_next(i)) {
const char *dbname = i->data;
db = alpm_register_syncdb(handle, dbname, siglevel);
if(db == NULL) {
fprintf(stderr, "error: could not register sync database '%s' (%s)\n",
dbname, alpm_strerror(alpm_errno(handle)));
continue;
}
checkpkgs(alpm_db_get_pkgcache(db));
}
}
static void usage(void)
{
fprintf(stderr, "cleanupdelta (pacman) v" PACKAGE_VERSION "\n\n"
"Returns a list of unused delta in a given sync database.\n\n"
"Usage: cleanupdelta [options]\n\n"
" -b <pacman db> core extra ... : check the listed sync databases\n");
exit(1);
}
int main(int argc, char *argv[])
{
const char *dbpath = DBPATH;
alpm_errno_t err;
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();
}
handle = alpm_initialize(ROOTDIR, dbpath, &err);
if(!handle) {
fprintf(stderr, "cannot initialize alpm: %s\n", alpm_strerror(err));
return 1;
}
/* let us get log messages from libalpm */
alpm_option_set_logcb(handle, output_cb);
checkdbs(dbnames);
alpm_list_free(dbnames);
cleanup(0);
}
/* vim: set noet: */
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