/* Copyright (C) 1991-2014 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 Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <stdio.h>
#include <printf.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include <sys/param.h>

#include "../locale/localeinfo.h"

#ifndef COMPILE_WPRINTF
# define CHAR_T         char
# define UCHAR_T        unsigned char
# define INT_T          int
# define L_(Str)        Str
# define ISDIGIT(Ch)    isdigit (Ch)
# define ISASCII(Ch)    isascii (Ch)
# define MBRLEN(Cp, L, St) __mbrlen (Cp, L, St)

# define PUT(F, S, N)   _IO_sputn (F, S, N)
# define PAD(Padchar)                                                         \
  if (width > 0)                                                              \
    done += _IO_padn (s, Padchar, width)
#else
# define vfprintf       vfwprintf
# define CHAR_T         wchar_t
# define UCHAR_T        uwchar_t
# define INT_T          wint_t
# define L_(Str)        L##Str
# define ISDIGIT(Ch)    iswdigit (Ch)

# define PUT(F, S, N)   _IO_sputn (F, S, N)
# define PAD(Padchar)                                                         \
  if (width > 0)                                                              \
    done += _IO_wpadn (s, Padchar, width)
#endif

#define DONT_NEED_READ_INT
#include "printf-parse.h"


size_t
parse_printf_format (fmt, n, argtypes)
      const char *fmt;
      size_t n;
      int *argtypes;
{
  size_t nargs;                 /* Number of arguments.  */
  size_t max_ref_arg;           /* Highest index used in a positional arg.  */
  struct printf_spec spec;
  const unsigned char *f = (const unsigned char *) fmt;

  nargs = 0;
  max_ref_arg = 0;

  /* Search for format specifications.  */
  for (f = __find_specmb (f); *f != '\0'; f = spec.next_fmt)
    {
      /* Parse this spec.  */
      nargs += __parse_one_specmb (f, nargs, &spec, &max_ref_arg);

      /* If the width is determined by an argument this is an int.  */
      if (spec.width_arg != -1 && (size_t) spec.width_arg < n)
        argtypes[spec.width_arg] = PA_INT;

      /* If the precision is determined by an argument this is an int.  */
      if (spec.prec_arg != -1 && (size_t) spec.prec_arg < n)
        argtypes[spec.prec_arg] = PA_INT;

      if ((size_t) spec.data_arg < n)
        switch (spec.ndata_args)
          {
          case 0:               /* No arguments.  */
            break;
          case 1:               /* One argument; we already have the type.  */
            argtypes[spec.data_arg] = spec.data_arg_type;
            break;
          default:
            /* We have more than one argument for this format spec.  We must
               call the arginfo function again to determine all the types.  */
            (void) (*__printf_arginfo_table[spec.info.spec])
              (&spec.info, n - spec.data_arg, &argtypes[spec.data_arg],
               &spec.size);
            break;
          }
    }

  return MAX (nargs, max_ref_arg);
}