lib/xstrtol.h

   1 /* A more useful interface to strtol.
   2
   3    Copyright (C) 1995, 1996, 1998, 1999, 2001, 2002, 2003, 2004 Free
   4    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 # include "exitfail.h"
  24
  25 # if HAVE_INTTYPES_H
  26 #  include <inttypes.h>
  27 # endif
  28 # if HAVE_STDINT_H
  29 #  include <stdint.h>
  30 # endif
  31
  32 # ifndef _STRTOL_ERROR
  33 enum strtol_error
  34   {
  35     LONGINT_OK = 0,
  36
  37     /* These two values can be ORed together, to indicate that both
  38        errors occurred.  */
  39     LONGINT_OVERFLOW = 1,
  40     LONGINT_INVALID_SUFFIX_CHAR = 2,
  41
  42     LONGINT_INVALID_SUFFIX_CHAR_WITH_OVERFLOW = (LONGINT_INVALID_SUFFIX_CHAR
  43                                                  | LONGINT_OVERFLOW),
  44     LONGINT_INVALID = 4
  45   };
  46 typedef enum strtol_error strtol_error;
  47 # endif
  48
  49 # define _DECLARE_XSTRTOL(name, type) \
  50   strtol_error name (const char *, char **, int, type *, const char *);
  51 _DECLARE_XSTRTOL (xstrtol, long int)
  52 _DECLARE_XSTRTOL (xstrtoul, unsigned long int)
  53 _DECLARE_XSTRTOL (xstrtoimax, intmax_t)
  54 _DECLARE_XSTRTOL (xstrtoumax, uintmax_t)
  55
  56 # define _STRTOL_ERROR(Exit_code, Str, Argument_type_string, Err)       \
  57   do                                                                    \
  58     {                                                                   \
  59       switch ((Err))                                                    \
  60         {                                                               \
  61         default:                                                        \
  62           abort ();                                                     \
  63                                                                         \
  64         case LONGINT_INVALID:                                           \
  65           error ((Exit_code), 0, "invalid %s `%s'",                     \
  66                  (Argument_type_string), (Str));                        \
  67           break;                                                        \
  68                                                                         \
  69         case LONGINT_INVALID_SUFFIX_CHAR:                               \
  70         case LONGINT_INVALID_SUFFIX_CHAR | LONGINT_OVERFLOW:            \
  71           error ((Exit_code), 0, "invalid character following %s in `%s'", \
  72                  (Argument_type_string), (Str));                        \
  73           break;                                                        \
  74                                                                         \
  75         case LONGINT_OVERFLOW:                                          \
  76           error ((Exit_code), 0, "%s `%s' too large",                   \
  77                  (Argument_type_string), (Str));                        \
  78           break;                                                        \
  79         }                                                               \
  80     }                                                                   \
  81   while (0)
  82
  83 # define STRTOL_FATAL_ERROR(Str, Argument_type_string, Err)             \
  84   _STRTOL_ERROR (exit_failure, Str, Argument_type_string, Err)
  85
  86 # define STRTOL_FAIL_WARN(Str, Argument_type_string, Err)               \
  87   _STRTOL_ERROR (0, Str, Argument_type_string, Err)
  88
  89 #endif /* not XSTRTOL_H_ */