db2/clib/getlong.c

   1 /*-
   2  * See the file LICENSE for redistribution information.
   3  *
   4  * Copyright (c) 1996, 1997
   5  *      Sleepycat Software.  All rights reserved.
   6  */
   7
   8 #include "config.h"
   9
  10 #ifndef lint
  11 static const char sccsid[] = "@(#)getlong.c     10.2 (Sleepycat) 5/1/97";
  12 #endif /* not lint */
  13
  14 #ifndef NO_SYSTEM_INCLUDES
  15 #include <errno.h>
  16 #include <limits.h>
  17 #include <stdlib.h>
  18 #endif
  19
  20 #include "db.h"
  21 #include "clib_ext.h"
  22
  23 /*
  24  * get_long --
  25  *      Return a long value inside of basic parameters.
  26  *
  27  * PUBLIC: void get_long __P((char *, long, long, long *));
  28  */
  29 void
  30 get_long(p, min, max, storep)
  31         char *p;
  32         long min, max, *storep;
  33 {
  34         long val;
  35         char *end;
  36
  37         __set_errno(0);
  38         val = strtol(p, &end, 10);
  39         if ((val == LONG_MIN || val == LONG_MAX) && errno == ERANGE)
  40                 err(1, "%s", p);
  41         if (p[0] == '\0' || end[0] != '\0')
  42                 errx(1, "%s: Invalid numeric argument", p);
  43         if (val < min)
  44                 errx(1, "%s: Less than minimum value (%ld)", p, min);
  45         if (val > max)
  46                 errx(1, "%s: Greater than maximum value (%ld)", p, max);
  47         *storep = val;
  48 }