usr/src/lib/libast/common/string/fmtversion.c

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
   5 *                      and is licensed under the                       *
   6 *                  Common Public License, Version 1.0                  *
   7 *                    by AT&T Intellectual Property                     *
   8 *                                                                      *
   9 *                A copy of the License is available at                 *
  10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
  11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
  12 *                                                                      *
  13 *              Information and Software Systems Research               *
  14 *                            AT&T Research                             *
  15 *                           Florham Park NJ                            *
  16 *                                                                      *
  17 *                 Glenn Fowler <gsf@research.att.com>                  *
  18 *                  David Korn <dgk@research.att.com>                   *
  19 *                   Phong Vo <kpv@research.att.com>                    *
  20 *                                                                      *
  21 ***********************************************************************/
  22 #pragma prototyped
  23 /*
  24  * Glenn Fowler
  25  * AT&T Bell Laboratories
  26  *
  27  * return formatted <magicid.h> version string
  28  */
  29
  30 #include <ast.h>
  31
  32 char*
  33 fmtversion(register unsigned long v)
  34 {
  35         register char*  cur;
  36         register char*  end;
  37         char*           buf;
  38         int             n;
  39
  40         buf = cur = fmtbuf(n = 18);
  41         end = cur + n;
  42         if (v >= 19700101L)
  43                 sfsprintf(cur, end - cur, "%04lu-%02lu-%02lu", (v / 10000) % 10000, (v / 100) % 100, v % 100);
  44         else
  45         {
  46                 if (n = (v >> 24) & 0xff)
  47                         cur += sfsprintf(cur, end - cur, "%d.", n);
  48                 if (n = (v >> 16) & 0xff)
  49                         cur += sfsprintf(cur, end - cur, "%d.", n);
  50                 sfsprintf(cur, end - cur, "%ld.%ld", (v >> 8) & 0xff, v & 0xff);
  51         }
  52         return buf;
  53 }