1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
/* Copyright (C) 1991-2023 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
<https://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <printf.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include <sys/param.h>
#include <printf.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 (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;
bool failed;
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, &failed);
/* If the width is determined by an argument, it 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, it 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);
}
|
