libblkid/src/version.c

   1 /*
   2  * version.c --- Return the version of the blkid library
   3  *
   4  * Copyright (C) 2004 Theodore Ts'o.
   5  *
   6  * %Begin-Header%
   7  * This file may be redistributed under the terms of the GNU Lesser General
   8  * Public License.
   9  * %End-Header%
  10  */
  11
  12 #ifdef HAVE_UNISTD_H
  13 #include <unistd.h>
  14 #endif
  15 #include <string.h>
  16 #include <stdio.h>
  17 #include <ctype.h>
  18
  19 #include "blkid.h"
  20
  21 /* LIBBLKID_* defined in the global config.h */
  22 static const char *lib_version = LIBBLKID_VERSION;      /* release version */
  23 static const char *lib_date = LIBBLKID_DATE;
  24
  25 /**
  26  * blkid_parse_version_string:
  27  * @ver_string:  version string (e.g. "2.16.0")
  28  *
  29  * Returns: release version code.
  30  */
  31 int blkid_parse_version_string(const char *ver_string)
  32 {
  33         const char *cp;
  34         int version = 0;
  35
  36         for (cp = ver_string; *cp; cp++) {
  37                 if (*cp == '.')
  38                         continue;
  39                 if (!isdigit(*cp))
  40                         break;
  41                 version = (version * 10) + (*cp - '0');
  42         }
  43         return version;
  44 }
  45
  46 /**
  47  * blkid_get_library_version:
  48  * @ver_string: returns release version (!= SONAME version)
  49  * @date_string: returns date
  50  *
  51  * Returns: release version code.
  52  */
  53 int blkid_get_library_version(const char **ver_string,
  54                                const char **date_string)
  55 {
  56         if (ver_string)
  57                 *ver_string = lib_version;
  58         if (date_string)
  59                 *date_string = lib_date;
  60
  61         return blkid_parse_version_string(lib_version);
  62 }