path: root/stdio-common/vfscanf.c

/* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
This file is part of the GNU C Library.

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

The GNU C Library 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
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA.  */

#include "../locale/localeinfo.h"
#include <errno.h>
#include <limits.h>
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifdef	__GNUC__
#define	HAVE_LONGLONG
#define	LONGLONG	long long
#else
#define	LONGLONG	long
#endif

/* Those are flags in the conversion format. */
# define LONG		0x001	/* l: long or double */
# define LONGDBL	0x002	/* L: long long or long double */
# define SHORT		0x004	/* h: short */
# define SUPPRESS	0x008	/* *: suppress assignment */
# define POINTER	0x010	/* weird %p pointer (`fake hex') */
# define NOSKIP		0x020	/* do not skip blanks */
# define WIDTH		0x040	/* width was given */
# define GROUP		0x080	/* ': group numbers */
# define MALLOC		0x100	/* a: malloc strings */

# define TYPEMOD	(LONG|LONGDBL|SHORT)


#ifdef USE_IN_LIBIO
# include <libioP.h>
# include <libio.h>

# define va_list	_IO_va_list
# define ungetc(c, s)	(--read_in, _IO_ungetc (c, s))
# define inchar()	((c = _IO_getc_unlocked (s)), (void) ++read_in, c)
# define conv_error()	do {						      \
			  if (errp != NULL) *errp |= 2;			      \
			  _IO_funlockfile (s);				      \
			  return done;					      \
			} while (0)
# define input_error()	do {						      \
			  _IO_funlockfile (s);				      \
			  if (errp != NULL) *errp |= 1;			      \
			  return done ?: EOF;				      \
			} while (0)
# define memory_error()	do {						      \
			  _IO_funlockfile (s);				      \
			  errno = ENOMEM;				      \
			  return EOF;					      \
			} while (0)
# define ARGCHECK(s, format)						      \
  do									      \
    {									      \
      /* Check file argument for consistence.  */			      \
      CHECK_FILE (s, EOF);						      \
      if (s->_flags & _IO_NO_READS || format == NULL)			      \
       {								      \
         MAYBE_SET_EINVAL;						      \
         return EOF;							      \
       }								      \
    } while (0)
#else
# define ungetc(c, s)	(--read_in, ungetc (c, s))
# define inchar()	((c = getc (s)), (void) ++read_in, c)
# define conv_error()	do {						      \
			  funlockfile (s);				      \
			  return done;					      \
			} while (0)
# define input_error()	do {						      \
			  funlockfile (s);				      \
			  return done ?: EOF;				      \
			} while (0)
# define memory_error()	do {						      \
			  funlockfile (s);				      \
			  errno = ENOMEM;				      \
			  return EOF;					      \
			} while (0)
# define ARGCHECK(s, format)						      \
  do									      \
    {									      \
      /* Check file argument for consistence.  */			      \
      if (!__validfp (s) || !s->__mode.__read || format == NULL)	      \
	{								      \
	  errno = EINVAL;						      \
	  return EOF;							      \
	}								      \
    } while (0)
# define flockfile(S) /* nothing */
# define funlockfile(S) /* nothing */
#endif


/* Read formatted input from S according to the format string
   FORMAT, using the argument list in ARG.
   Return the number of assignments made, or -1 for an input error.  */
#ifdef USE_IN_LIBIO
int
_IO_vfscanf (s, format, argptr, errp)
     _IO_FILE *s;
     const char *format;
     _IO_va_list argptr;
     int *errp;
#else
int
__vfscanf <