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/* Copyright (C) 1991, 1992, 1995 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 <stdio.h>
#include <printf.h>
#include <stdlib.h>
#include <string.h>
#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;
nargs = 0;
max_ref_arg = 0;
/* Search for format specifications. */
for (fmt = find_spec (fmt); *fmt != '\0'; fmt = spec.next_fmt)
{
/* Parse this spec. */
nargs += parse_one_spec (fmt, nargs, &spec, &max_ref_arg);
/* If the width is determined by an argument this is an int. */
if (spec.width_arg != -1 && 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 && spec.prec_arg < n)
argtypes[spec.prec_arg] = PA_INT;
if (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]);
break;
}
}
return MAX (nargs, max_ref_arg);
}
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