xstrtol.h   [plain text]

/* A more useful interface to strtol.

   Copyright (C) 1995, 1996, 1998, 1999, 2001, 2002, 2003, 2004 Free
   Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation,
   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#ifndef XSTRTOL_H_
# define XSTRTOL_H_ 1

# include "exitfail.h"

# if HAVE_INTTYPES_H
#  include <inttypes.h>
# endif
# if HAVE_STDINT_H
#  include <stdint.h>
# endif

# ifndef _STRTOL_ERROR
enum strtol_error
  {
    LONGINT_OK = 0,

    /* These two values can be ORed together, to indicate that both
       errors occurred.  */
    LONGINT_OVERFLOW = 1,
    LONGINT_INVALID_SUFFIX_CHAR = 2,

    LONGINT_INVALID_SUFFIX_CHAR_WITH_OVERFLOW = (LONGINT_INVALID_SUFFIX_CHAR
						 | LONGINT_OVERFLOW),
    LONGINT_INVALID = 4
  };
typedef enum strtol_error strtol_error;
# endif

# define _DECLARE_XSTRTOL(name, type) \
  strtol_error name (const char *, char **, int, type *, const char *);
_DECLARE_XSTRTOL (xstrtol, long int)
_DECLARE_XSTRTOL (xstrtoul, unsigned long int)
_DECLARE_XSTRTOL (xstrtoimax, intmax_t)
_DECLARE_XSTRTOL (xstrtoumax, uintmax_t)

# define _STRTOL_ERROR(Exit_code, Str, Argument_type_string, Err)	\
  do									\
    {									\
      switch ((Err))							\
	{								\
	default:							\
	  abort ();							\
									\
	case LONGINT_INVALID:						\
	  error ((Exit_code), 0, "invalid %s `%s'",			\
		 (Argument_type_string), (Str));			\
	  break;							\
									\
	case LONGINT_INVALID_SUFFIX_CHAR:				\
	case LONGINT_INVALID_SUFFIX_CHAR | LONGINT_OVERFLOW:		\
	  error ((Exit_code), 0, "invalid character following %s in `%s'", \
		 (Argument_type_string), (Str));			\
	  break;							\
									\
	case LONGINT_OVERFLOW:						\
	  error ((Exit_code), 0, "%s `%s' too large",			\
		 (Argument_type_string), (Str));			\
	  break;							\
	}								\
    }									\
  while (0)

# define STRTOL_FATAL_ERROR(Str, Argument_type_string, Err)		\
  _STRTOL_ERROR (exit_failure, Str, Argument_type_string, Err)

# define STRTOL_FAIL_WARN(Str, Argument_type_string, Err)		\
  _STRTOL_ERROR (0, Str, Argument_type_string, Err)

#endif /* not XSTRTOL_H_ */