lib/version.c

   1 /* version.c --- Version handling.
   2  * Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007  Simon Josefsson
   3  *
   4  * This file is part of Shishi.
   5  *
   6  * Shishi is free software; you can redistribute it and/or modify it it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Shishi is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with Shishi; if not, see http://www.gnu.org/licenses or write
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19  * 02110-1301, USA
  20  *
  21  */
  22
  23 #include "internal.h"
  24
  25 #include <strverscmp.h>
  26
  27 /**
  28  * shishi_check_version:
  29  * @req_version: version string to compare with, or NULL
  30  *
  31  * Check that the the version of the library is at minimum the one
  32  * given as a string in @req_version.
  33  *
  34  * Return value: the actual version string of the library; NULL if the
  35  *   condition is not met.  If %NULL is passed to this function no
  36  *   check is done and only the version string is returned.
  37  **/
  38 const char *
  39 shishi_check_version (const char *req_version)
  40 {
  41   if (!req_version || strverscmp (req_version, PACKAGE_VERSION) <= 0)
  42     return PACKAGE_VERSION;
  43
  44   return NULL;
  45 }