/* * cleanupdelta.c : return list of unused delta in a given sync database * * Copyright (c) 2011-2014 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); } static void output_cb(alpm_event_log_t *event) { if(event->type != ALPM_EVENT_LOG) { return; } if(strlen(event->fmt)) { switch(event->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(event->fmt, event->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 alpm_siglevel_t level = 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, level); 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_eventcb(handle, (alpm_cb_event) output_cb); checkdbs(dbnames); alpm_list_free(dbnames); cleanup(0); } /* vim: set noet: */