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
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/*
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* and/or other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
/*
FUNCTION
<<siscanf>>, <<fiscanf>>, <<iscanf>>---scan and format non-floating input
INDEX
iscanf
INDEX
_iscanf_r
INDEX
fiscanf
INDEX
_fiscanf_r
INDEX
siscanf
INDEX
_siscanf_r
SYNOPSIS
#include <stdio.h>
int iscanf(const char *<[format]>, ...);
int fiscanf(FILE *<[fd]>, const char *<[format]>, ...);
int siscanf(const char *<[str]>, const char *<[format]>, ...);
int _iscanf_r(struct _reent *<[ptr]>, const char *<[format]>, ...);
int _fiscanf_r(struct _reent *<[ptr]>, FILE *<[fd]>,
const char *<[format]>, ...);
int _siscanf_r(struct _reent *<[ptr]>, const char *<[str]>,
const char *<[format]>, ...);
DESCRIPTION
<<iscanf>>, <<fiscanf>>, and <<siscanf>> are the same as
<<scanf>>, <<fscanf>>, and <<sscanf>> respectively, only that
they restrict the available formats to non-floating-point
format specifiers.
The routines <<_iscanf_r>>, <<_fiscanf_r>>, and <<_siscanf_r>> are reentrant
versions of <<iscanf>>, <<fiscanf>>, and <<siscanf>> that take an additional
first argument pointing to a reentrancy structure.
RETURNS
<<iscanf>> returns the number of input fields successfully
scanned, converted and stored; the return value does
not include scanned fields which were not stored.
If <<iscanf>> attempts to read at end-of-file, the return
value is <<EOF>>.
If no fields were stored, the return value is <<0>>.
PORTABILITY
<<iscanf>>, <<fiscanf>>, and <<siscanf>> are newlib extensions.
Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
*/
#include <_ansi.h>
#include <reent.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include "local.h"
#ifndef _REENT_ONLY
int
siscanf (const char *str,
const char *fmt, ...)
{
int ret;
va_list ap;
FILE f;
f._flags = __SRD | __SSTR;
f._flags2 = 0;
f._bf._base = f._p = (unsigned char *) str;
f._bf._size = f._r = strlen (str);
f._read = __seofread;
f._ub._base = NULL;
f._lb._base = NULL;
f._file = -1; /* No file. */
va_start (ap, fmt);
ret = __ssvfiscanf_r (_REENT, &f, fmt, ap);
va_end (ap);
return ret;
}
#endif /* !_REENT_ONLY */
int
_siscanf_r (struct _reent *ptr,
const char *str,
const char *fmt, ...)
{
int ret;
va_list ap;
FILE f;
f._flags = __SRD | __SSTR;
f._flags2 = 0;
f._bf._base = f._p = (unsigned char *) str;
f._bf._size = f._r = strlen (str);
f._read = __seofread;
f._ub._base = NULL;
f._lb._base = NULL;
f._file = -1; /* No file. */
va_start (ap, fmt);
ret = __ssvfiscanf_r (ptr, &f, fmt, ap);
va_end (ap);
return ret;
}
|
