haiku.git

/* Copyright (C) 1991,92,95,96,99,2000,2002 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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.
*/


#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 PUTC(C, F)	putc (C, F)
ssize_t __printf_pad __P ((FILE *, char pad, size_t n));
# define PAD(Padchar)							      \
  if (width > 0)							      \
    { if (__printf_pad (s, Padchar, width) == -1)			      \
	return -1; else done += 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 PUTC(C, F)	wputc (C, F)
ssize_t __wprintf_pad __P ((FILE *, wchar_t pad, size_t n));
# define PAD(Padchar)							      \
  if (width > 0)							      \
    { if (__wprintf_pad (s, Padchar, width) == -1)			      \
	return -1; else done += width; }
#endif

#include "printf-parse.h"


size_t
parse_printf_format(const char *fmt, size_t n, int *argtypes)
{
	size_t nargs = 0;			/* Number of arguments. */
	size_t max_ref_arg = 0;		/* Highest index used in a positional arg. */
	struct printf_spec spec;
	mbstate_t mbstate;

	/* Search for format specifications. */
	for (fmt = find_spec(fmt /*, &mbstate*/); *fmt != '\0'; fmt = spec.next_fmt) {
		/* Parse this spec. */
		nargs += parse_one_spec(fmt, nargs, &spec, &max_ref_arg /*, &mbstate*/);

		/* 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.
					 */
					(*__printf_arginfo_table[spec.info.spec])
						(&spec.info, n - spec.data_arg, &argtypes[spec.data_arg]);
					break;
			}
		}
	}

	return MAX(nargs, max_ref_arg);
}