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
|
#ifndef __STDIO__FORMAT_H__
#define __STDIO__FORMAT_H__
#include <inttypes.h>
#include <stddef.h>
#include <stdarg.h>
#include <stdio.h>
#include "_stdio.h"
#include "_safety.h"
#define UNDEFINED_FMT(__conv, __fmt, ...) do { \
char __buf[128]; \
snprintf(__buf, sizeof(__buf), "In call to %s() with format string \"%s\": Invalid conversion specification: ", __conv->func, __conv->fmt); \
__undefined("%s" __fmt, __buf, __VA_ARGS__); \
} while (0)
struct io_options {
const char *fnname; /* the calling function */
char *string; /* NULL or the output string */
wchar_t *wstring; /* NULL or the output wide string */
FILE *stream; /* NULL or the output stream */
int fd; /* -1 or the output file descriptor */
size_t maxlen; /* max number of bytes to write to string */
size_t pos; /* current index in string */
int ret; /* return value */
};
struct io_conversion {
const char *func;
const char *fmt;
enum { IO_IN, IO_OUT } dir;
enum conversion_flags {
/* explicit */
F_STAR = (1<<0),
F_LEFT = (1<<1),
F_SIGN = (1<<2),
F_SPACE = (1<<3),
F_ALT = (1<<4),
F_ZERO = (1<<5),
/* inferred */
F_UPPER = (1<<10),
F_WIDTH = (1<<11),
F_PRECISION = (1<<12),
} flags;
enum conversion_length {
L_default,
L_hh,
L_ll,
L_h,
L_l,
L_j,
L_z,
L_t,
L_L,
} length;
uintmax_t width;
uintmax_t precision;
char spec;
union {
uintmax_t u;
intmax_t i;
float f;
double d;
long double ld;
char *s;
wchar_t *wcs;
char c;
wchar_t wc;
void *ptr;
} val;
};
size_t __conv(const char *, struct io_conversion *, va_list);
int __printf(struct io_options * restrict, const char * restrict, va_list);
int __scanf(struct io_options * restrict, const char * restrict, va_list);
/*
STDC(-1)
*/
#endif
|
