Dogcows Code - chaz/tar/blob - lib/xstrtol.h

   1 /* A more useful interface to strtol.
   2    Copyright 1995, 1996, 1998, 1999, 2001 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software Foundation,
  16    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  17
  18 #ifndef XSTRTOL_H_
  19 # define XSTRTOL_H_ 1
  20
  21 # if HAVE_INTTYPES_H
  22 #  include <inttypes.h> /* for uintmax_t */
  23 # endif
  24
  25 # ifndef PARAMS
  26 #  if defined PROTOTYPES || (defined __STDC__ && __STDC__)
  27 #   define PARAMS(Args) Args
  28 #  else
  29 #   define PARAMS(Args) ()
  30 #  endif
  31 # endif
  32
  33 # ifndef _STRTOL_ERROR
  34 enum strtol_error
  35   {
  36     LONGINT_OK, LONGINT_INVALID, LONGINT_INVALID_SUFFIX_CHAR, LONGINT_OVERFLOW
  37   };
  38 typedef enum strtol_error strtol_error;
  39 # endif
  40
  41 # define _DECLARE_XSTRTOL(name, type) \
  42   strtol_error \
  43     name PARAMS ((const char *s, char **ptr, int base, \
  44                   type *val, const char *valid_suffixes));
  45 _DECLARE_XSTRTOL (xstrtol, long int)
  46 _DECLARE_XSTRTOL (xstrtoul, unsigned long int)
  47 _DECLARE_XSTRTOL (xstrtoimax, intmax_t)
  48 _DECLARE_XSTRTOL (xstrtoumax, uintmax_t)
  49
  50 # define _STRTOL_ERROR(Exit_code, Str, Argument_type_string, Err)       \
  51   do                                                                    \
  52     {                                                                   \
  53       switch ((Err))                                                    \
  54         {                                                               \
  55         case LONGINT_OK:                                                \
  56           abort ();                                                     \
  57                                                                         \
  58         case LONGINT_INVALID:                                           \
  59           error ((Exit_code), 0, "invalid %s `%s'",                     \
  60                  (Argument_type_string), (Str));                        \
  61           break;                                                        \
  62                                                                         \
  63         case LONGINT_INVALID_SUFFIX_CHAR:                               \
  64           error ((Exit_code), 0, "invalid character following %s in `%s'", \
  65                  (Argument_type_string), (Str));                        \
  66           break;                                                        \
  67                                                                         \
  68         case LONGINT_OVERFLOW:                                          \
  69           error ((Exit_code), 0, "%s `%s' too large",                   \
  70                  (Argument_type_string), (Str));                        \
  71           break;                                                        \
  72         }                                                               \
  73     }                                                                   \
  74   while (0)
  75
  76 # define STRTOL_FATAL_ERROR(Str, Argument_type_string, Err)             \
  77   _STRTOL_ERROR (2, Str, Argument_type_string, Err)
  78
  79 # define STRTOL_FAIL_WARN(Str, Argument_type_string, Err)               \
  80   _STRTOL_ERROR (0, Str, Argument_type_string, Err)
  81
  82 #endif /* not XSTRTOL_H_ */