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/*
* cleanupdelta.c : return list of unused delta in a given sync database
*
* Copyright (c) 2011 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"
alpm_handle_t *handle = NULL;
static void cleanup(int signum) {
if(handle && alpm_release(handle) == -1) {
fprintf(stderr, "error releasing alpm\n");
}
exit(signum);
}
static void output_cb(alpm_loglevel_t level, const 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)) {
alpm_pkg_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(const char *dbpath, alpm_list_t *dbnames) {
char syncdbpath[PATH_MAX];
alpm_db_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(handle, dbname, PM_PGP_VERIFY_OPTIONAL);
if(db == NULL) {
fprintf(stderr, "error: could not register sync database (%s)\n",
alpm_strerror(alpm_errno(handle)));
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[])
{
const char *dbpath = DBPATH;
enum _pmerrno_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(dbpath,dbnames);
alpm_list_free(dbnames);
cleanup(0);
}
/* vim: set ts=2 sw=2 noet: */
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