138 lines
3.3 KiB
C
138 lines
3.3 KiB
C
/*
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* cleanupdelta.c : return list of unused delta in a given sync database
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*
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* Copyright (c) 2011-2014 Pacman Development Team <pacman-dev@archlinux.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <alpm.h>
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#include <alpm_list.h>
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alpm_handle_t *handle = NULL;
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static void cleanup(int signum)
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{
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if(handle && alpm_release(handle) == -1) {
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fprintf(stderr, "error releasing alpm\n");
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}
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exit(signum);
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}
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__attribute__((format(printf, 2, 0)))
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static void output_cb(alpm_loglevel_t level, const char *fmt, va_list args)
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{
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if(strlen(fmt)) {
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switch(level) {
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case ALPM_LOG_ERROR: printf("error: "); break;
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case ALPM_LOG_WARNING: printf("warning: "); break;
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/* case ALPM_LOG_DEBUG: printf("debug: "); break; */
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default: return;
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}
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vprintf(fmt, args);
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}
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}
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static void checkpkgs(alpm_list_t *pkglist)
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{
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alpm_list_t *i, *j;
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for(i = pkglist; i; i = alpm_list_next(i)) {
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alpm_pkg_t *pkg = i->data;
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alpm_list_t *unused = alpm_pkg_unused_deltas(pkg);
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for(j = unused; j; j = alpm_list_next(j)) {
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const char *delta = j->data;
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printf("%s\n", delta);
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}
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alpm_list_free(unused);
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}
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}
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static void checkdbs(alpm_list_t *dbnames)
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{
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alpm_db_t *db = NULL;
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alpm_list_t *i;
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const alpm_siglevel_t level = ALPM_SIG_DATABASE | ALPM_SIG_DATABASE_OPTIONAL;
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for(i = dbnames; i; i = alpm_list_next(i)) {
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const char *dbname = i->data;
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db = alpm_register_syncdb(handle, dbname, level);
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if(db == NULL) {
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fprintf(stderr, "error: could not register sync database '%s' (%s)\n",
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dbname, alpm_strerror(alpm_errno(handle)));
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continue;
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}
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checkpkgs(alpm_db_get_pkgcache(db));
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}
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}
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static void usage(void)
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{
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fprintf(stderr, "cleanupdelta (pacman) v" PACKAGE_VERSION "\n\n"
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"Returns a list of unused delta in a given sync database.\n\n"
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"Usage: cleanupdelta [options]\n\n"
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" -b <pacman db> core extra ... : check the listed sync databases\n");
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exit(1);
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}
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int main(int argc, char *argv[])
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{
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const char *dbpath = DBPATH;
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alpm_errno_t err;
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int a = 1;
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alpm_list_t *dbnames = NULL;
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while(a < argc) {
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if(strcmp(argv[a], "-b") == 0) {
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if(++a < argc) {
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dbpath = argv[a];
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} else {
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usage();
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}
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} else if(strcmp(argv[a], "-h") == 0 ||
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strcmp(argv[a], "--help") == 0 ) {
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usage();
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} else {
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dbnames = alpm_list_add(dbnames, argv[a]);
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}
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a++;
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}
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if(!dbnames) {
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usage();
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}
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handle = alpm_initialize(ROOTDIR, dbpath, &err);
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if(!handle) {
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fprintf(stderr, "cannot initialize alpm: %s\n", alpm_strerror(err));
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return 1;
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}
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/* let us get log messages from libalpm */
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alpm_option_set_logcb(handle, output_cb);
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checkdbs(dbnames);
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alpm_list_free(dbnames);
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cleanup(0);
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}
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/* vim: set noet: */
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