lib/xstrtol.h

   1 /* A more useful interface to strtol.
   2
   3    Copyright (C) 1995, 1996, 1998, 1999, 2001, 2002, 2003, 2004, 2006
   4    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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  19
  20 #ifndef XSTRTOL_H_
  21 # define XSTRTOL_H_ 1
  22
  23 # include "exitfail.h"
  24
  25 # include <inttypes.h>
  26
  27 # ifndef _STRTOL_ERROR
  28 enum strtol_error
  29   {
  30     LONGINT_OK = 0,
  31
  32     /* These two values can be ORed together, to indicate that both
  33        errors occurred.  */
  34     LONGINT_OVERFLOW = 1,
  35     LONGINT_INVALID_SUFFIX_CHAR = 2,
  36
  37     LONGINT_INVALID_SUFFIX_CHAR_WITH_OVERFLOW = (LONGINT_INVALID_SUFFIX_CHAR
  38                                                  | LONGINT_OVERFLOW),
  39     LONGINT_INVALID = 4
  40   };
  41 typedef enum strtol_error strtol_error;
  42 # endif
  43
  44 # define _DECLARE_XSTRTOL(name, type) \
  45   strtol_error name (const char *, char **, int, type *, const char *);
  46 _DECLARE_XSTRTOL (xstrtol, long int)
  47 _DECLARE_XSTRTOL (xstrtoul, unsigned long int)
  48 _DECLARE_XSTRTOL (xstrtoimax, intmax_t)
  49 _DECLARE_XSTRTOL (xstrtoumax, uintmax_t)
  50
  51 # define _STRTOL_ERROR(Exit_code, Str, Argument_type_string, Err)       \
  52   do                                                                    \
  53     {                                                                   \
  54       switch ((Err))                                                    \
  55         {                                                               \
  56         default:                                                        \
  57           abort ();                                                     \
  58                                                                         \
  59         case LONGINT_INVALID:                                           \
  60           error ((Exit_code), 0, "invalid %s `%s'",                     \
  61                  (Argument_type_string), (Str));                        \
  62           break;                                                        \
  63                                                                         \
  64         case LONGINT_INVALID_SUFFIX_CHAR:                               \
  65         case LONGINT_INVALID_SUFFIX_CHAR | LONGINT_OVERFLOW:            \
  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 (exit_failure, 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_ */