gnu/dist/diffutils/lib/xstrtol.h

   1 /*      $NetBSD$        */
   2
   3 /* A more useful interface to strtol.
   4    Copyright 1995, 1996, 1998, 1999, 2001 Free Software Foundation, Inc.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but 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 this program; if not, write to the Free Software Foundation,
  18    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  19
  20 #ifndef XSTRTOL_H_
  21 # define XSTRTOL_H_ 1
  22
  23 # if HAVE_INTTYPES_H
  24 #  include <inttypes.h> /* for uintmax_t */
  25 # endif
  26
  27 # ifndef PARAMS
  28 #  if defined PROTOTYPES || (defined __STDC__ && __STDC__)
  29 #   define PARAMS(Args) Args
  30 #  else
  31 #   define PARAMS(Args) ()
  32 #  endif
  33 # endif
  34
  35 # ifndef _STRTOL_ERROR
  36 enum strtol_error
  37   {
  38     LONGINT_OK, LONGINT_INVALID, LONGINT_INVALID_SUFFIX_CHAR, LONGINT_OVERFLOW
  39   };
  40 typedef enum strtol_error strtol_error;
  41 # endif
  42
  43 # define _DECLARE_XSTRTOL(name, type) \
  44   strtol_error \
  45     name PARAMS ((const char *s, char **ptr, int base, \
  46                   type *val, const char *valid_suffixes));
  47 _DECLARE_XSTRTOL (xstrtol, long int)
  48 _DECLARE_XSTRTOL (xstrtoul, unsigned long int)
  49 _DECLARE_XSTRTOL (xstrtoimax, intmax_t)
  50 _DECLARE_XSTRTOL (xstrtoumax, uintmax_t)
  51
  52 # define _STRTOL_ERROR(Exit_code, Str, Argument_type_string, Err)       \
  53   do                                                                    \
  54     {                                                                   \
  55       switch ((Err))                                                    \
  56         {                                                               \
  57         case LONGINT_OK:                                                \
  58           abort ();                                                     \
  59                                                                         \
  60         case LONGINT_INVALID:                                           \
  61           error ((Exit_code), 0, "invalid %s `%s'",                     \
  62                  (Argument_type_string), (Str));                        \
  63           break;                                                        \
  64                                                                         \
  65         case LONGINT_INVALID_SUFFIX_CHAR:                               \
  66           error ((Exit_code), 0, "invalid character following %s in `%s'", \
  67                  (Argument_type_string), (Str));                        \
  68           break;                                                        \
  69                                                                         \
  70         case LONGINT_OVERFLOW:                                          \
  71           error ((Exit_code), 0, "%s `%s' too large",                   \
  72                  (Argument_type_string), (Str));                        \
  73           break;                                                        \
  74         }                                                               \
  75     }                                                                   \
  76   while (0)
  77
  78 # define STRTOL_FATAL_ERROR(Str, Argument_type_string, Err)             \
  79   _STRTOL_ERROR (2, Str, Argument_type_string, Err)
  80
  81 # define STRTOL_FAIL_WARN(Str, Argument_type_string, Err)               \
  82   _STRTOL_ERROR (0, Str, Argument_type_string, Err)
  83
  84 #endif /* not XSTRTOL_H_ */