1/* Copyright (C) 1991,92,95,96,99,2000,2002 Free Software Foundation, Inc.
2   This file is part of the GNU C Library.
3
4   The GNU C Library is free software; you can redistribute it and/or
5   modify it under the terms of the GNU Lesser General Public
6   License as published by the Free Software Foundation; either
7   version 2.1 of the License, or (at your option) any later version.
8
9   The GNU C Library is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public
15   License along with the GNU C Library; if not, write to the Free
16   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17   02111-1307 USA.
18*/
19
20
21#include <stdio.h>
22#include <printf.h>
23#include <stdlib.h>
24#include <string.h>
25#include <wchar.h>
26#include <sys/param.h>
27
28#include "../locale/localeinfo.h"
29
30#ifndef COMPILE_WPRINTF
31# define CHAR_T		char
32# define UCHAR_T	unsigned char
33# define INT_T		int
34# define L_(Str)	Str
35# define ISDIGIT(Ch)	isdigit (Ch)
36# define ISASCII(Ch)	isascii (Ch)
37# define MBRLEN(Cp, L, St) __mbrlen (Cp, L, St)
38
39# define PUTC(C, F)	putc (C, F)
40ssize_t __printf_pad __P ((FILE *, char pad, size_t n));
41# define PAD(Padchar)							      \
42  if (width > 0)							      \
43    { if (__printf_pad (s, Padchar, width) == -1)			      \
44	return -1; else done += width; }
45#else
46# define vfprintf	vfwprintf
47# define CHAR_T		wchar_t
48# define UCHAR_T	uwchar_t
49# define INT_T		wint_t
50# define L_(Str)	L##Str
51# define ISDIGIT(Ch)	iswdigit (Ch)
52
53# define PUTC(C, F)	wputc (C, F)
54ssize_t __wprintf_pad __P ((FILE *, wchar_t pad, size_t n));
55# define PAD(Padchar)							      \
56  if (width > 0)							      \
57    { if (__wprintf_pad (s, Padchar, width) == -1)			      \
58	return -1; else done += width; }
59#endif
60
61#include "printf-parse.h"
62
63
64size_t
65parse_printf_format(const char *fmt, size_t n, int *argtypes)
66{
67	size_t nargs = 0;			/* Number of arguments. */
68	size_t max_ref_arg = 0;		/* Highest index used in a positional arg. */
69	struct printf_spec spec;
70	mbstate_t mbstate;
71
72	/* Search for format specifications. */
73	for (fmt = find_spec(fmt /*, &mbstate*/); *fmt != '\0'; fmt = spec.next_fmt) {
74		/* Parse this spec. */
75		nargs += parse_one_spec(fmt, nargs, &spec, &max_ref_arg /*, &mbstate*/);
76
77		/* If the width is determined by an argument this is an int. */
78		if (spec.width_arg != -1 && (size_t)spec.width_arg < n)
79			argtypes[spec.width_arg] = PA_INT;
80
81		/* If the precision is determined by an argument this is an int. */
82		if (spec.prec_arg != -1 && (size_t) spec.prec_arg < n)
83			argtypes[spec.prec_arg] = PA_INT;
84
85		if ((size_t) spec.data_arg < n) {
86			switch (spec.ndata_args) {
87				case 0:		/* No arguments. */
88					break;
89				case 1:		/* One argument; we already have the type. */
90					argtypes[spec.data_arg] = spec.data_arg_type;
91					break;
92				default:
93					/* We have more than one argument for this format spec.  We must
94					 * call the arginfo function again to determine all the types.
95					 */
96					(*__printf_arginfo_table[spec.info.spec])
97						(&spec.info, n - spec.data_arg, &argtypes[spec.data_arg]);
98					break;
99			}
100		}
101	}
102
103	return MAX(nargs, max_ref_arg);
104}
105