lib/libalpm/delta.h

   1 /*
   2  *  delta.h
   3  *
   4  *  Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org>
   5  *  Copyright (c) 2007-2006 by Judd Vinet <jvinet@zeroflux.org>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20 #ifndef _ALPM_DELTA_H
  21 #define _ALPM_DELTA_H
  22
  23 #include <sys/types.h> /* off_t */
  24
  25 #include "alpm.h"
  26
  27 struct __pmdelta_t {
  28         /** filename of the delta patch */
  29         char *delta;
  30         /** md5sum of the delta file */
  31         char *delta_md5;
  32         /** filesize of the delta file */
  33         off_t delta_size;
  34         /** filename of the 'before' file */
  35         char *from;
  36         /** filename of the 'after' file */
  37         char *to;
  38         /** download filesize of the delta file */
  39         off_t download_size;
  40 };
  41
  42 pmdelta_t *_alpm_delta_parse(char *line);
  43 void _alpm_delta_free(pmdelta_t *delta);
  44 off_t _alpm_shortest_delta_path(alpm_list_t *deltas,
  45                 const char *to, alpm_list_t **path);
  46
  47 /* max percent of package size to download deltas */
  48 #define MAX_DELTA_RATIO 0.7
  49
  50 #endif /* _ALPM_DELTA_H */
  51
  52 /* vim: set ts=2 sw=2 noet: */