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
|
#include <reent.h>
#include <wchar.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
size_t
_DEFUN (_wcsrtombs_r, (r, dst, src, len, ps),
struct _reent *r _AND
char *dst _AND
const wchar_t **src _AND
size_t len _AND
mbstate_t *ps)
{
char *ptr = dst;
char buff[10];
wchar_t *pwcs;
size_t n;
int i;
#ifdef MB_CAPABLE
if (ps == NULL)
{
_REENT_CHECK_MISC(r);
ps = &(_REENT_WCSRTOMBS_STATE(r));
}
#endif
/* If no dst pointer, treat len as maximum possible value. */
if (dst == NULL)
len = (size_t)-1;
n = 0;
pwcs = (wchar_t *)(*src);
while (n < len)
{
int count = ps->__count;
wint_t wch = ps->__value.__wch;
int bytes = _wctomb_r (r, buff, *pwcs, ps);
if (bytes == -1)
{
r->_errno = EILSEQ;
ps->__count = 0;
return (size_t)-1;
}
if (n <= len - bytes && bytes < len)
{
n += bytes;
if (dst)
{
for (i = 0; i < bytes; ++i)
*ptr++ = buff[i];
++(*src);
}
if (*pwcs++ == 0x00)
{
if (dst)
*src = NULL;
ps->__count = 0;
return n - 1;
}
}
else
{
/* not enough room, we must back up state to before _wctomb_r call */
ps->__count = count;
ps->__value.__wch = wch;
len = 0;
}
}
return n;
}
#ifndef _REENT_ONLY
size_t
_DEFUN (wcsrtombs, (dst, src, len, ps),
char *dst _AND
const wchar_t **src _AND
size_t len _AND
mbstate_t *ps)
{
return _wcsrtombs_r (_REENT, dst, src, len, ps);
}
#endif /* !_REENT_ONLY */
|
