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printf-args.c

/* Decomposed printf argument list.
   Copyright (C) 1999, 2002-2003, 2005-2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

#include <config.h>

/* Specification.  */
#include "printf-args.h"

#ifdef STATIC
STATIC
#endif
int
printf_fetchargs (va_list args, arguments *a)
{
  size_t i;
  argument *ap;

  for (i = 0, ap = &a->arg[0]; i < a->count; i++, ap++)
    switch (ap->type)
      {
      case TYPE_SCHAR:
      ap->a.a_schar = va_arg (args, /*signed char*/ int);
      break;
      case TYPE_UCHAR:
      ap->a.a_uchar = va_arg (args, /*unsigned char*/ int);
      break;
      case TYPE_SHORT:
      ap->a.a_short = va_arg (args, /*short*/ int);
      break;
      case TYPE_USHORT:
      ap->a.a_ushort = va_arg (args, /*unsigned short*/ int);
      break;
      case TYPE_INT:
      ap->a.a_int = va_arg (args, int);
      break;
      case TYPE_UINT:
      ap->a.a_uint = va_arg (args, unsigned int);
      break;
      case TYPE_LONGINT:
      ap->a.a_longint = va_arg (args, long int);
      break;
      case TYPE_ULONGINT:
      ap->a.a_ulongint = va_arg (args, unsigned long int);
      break;
#ifdef HAVE_LONG_LONG_INT
      case TYPE_LONGLONGINT:
      ap->a.a_longlongint = va_arg (args, long long int);
      break;
      case TYPE_ULONGLONGINT:
      ap->a.a_ulonglongint = va_arg (args, unsigned long long int);
      break;
#endif
      case TYPE_DOUBLE:
      ap->a.a_double = va_arg (args, double);
      break;
#ifdef HAVE_LONG_DOUBLE
      case TYPE_LONGDOUBLE:
      ap->a.a_longdouble = va_arg (args, long double);
      break;
#endif
      case TYPE_CHAR:
      ap->a.a_char = va_arg (args, int);
      break;
#ifdef HAVE_WINT_T
      case TYPE_WIDE_CHAR:
      /* Although ISO C 99 7.24.1.(2) says that wint_t is "unchanged by
         default argument promotions", this is not the case in mingw32,
         where wint_t is 'unsigned short'.  */
      ap->a.a_wide_char =
        (sizeof (wint_t) < sizeof (int)
         ? va_arg (args, int)
         : va_arg (args, wint_t));
      break;
#endif
      case TYPE_STRING:
      ap->a.a_string = va_arg (args, const char *);
      /* A null pointer is an invalid argument for "%s", but in practice
         it occurs quite frequently in printf statements that produce
         debug output.  Use a fallback in this case.  */
      if (ap->a.a_string == NULL)
        ap->a.a_string = "(NULL)";
      break;
#ifdef HAVE_WCHAR_T
      case TYPE_WIDE_STRING:
      ap->a.a_wide_string = va_arg (args, const wchar_t *);
      /* A null pointer is an invalid argument for "%ls", but in practice
         it occurs quite frequently in printf statements that produce
         debug output.  Use a fallback in this case.  */
      if (ap->a.a_wide_string == NULL)
        {
          static const wchar_t wide_null_string[] =
            {
            (wchar_t)'(',
            (wchar_t)'N', (wchar_t)'U', (wchar_t)'L', (wchar_t)'L',
            (wchar_t)')',
            (wchar_t)0
            };
          ap->a.a_wide_string = wide_null_string;
        }
      break;
#endif
      case TYPE_POINTER:
      ap->a.a_pointer = va_arg (args, void *);
      break;
      case TYPE_COUNT_SCHAR_POINTER:
      ap->a.a_count_schar_pointer = va_arg (args, signed char *);
      break;
      case TYPE_COUNT_SHORT_POINTER:
      ap->a.a_count_short_pointer = va_arg (args, short *);
      break;
      case TYPE_COUNT_INT_POINTER:
      ap->a.a_count_int_pointer = va_arg (args, int *);
      break;
      case TYPE_COUNT_LONGINT_POINTER:
      ap->a.a_count_longint_pointer = va_arg (args, long int *);
      break;
#ifdef HAVE_LONG_LONG_INT
      case TYPE_COUNT_LONGLONGINT_POINTER:
      ap->a.a_count_longlongint_pointer = va_arg (args, long long int *);
      break;
#endif
      default:
      /* Unknown type.  */
      return -1;
      }
  return 0;
}

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