49 lines
1014 B
C
49 lines
1014 B
C
#include <stdlib.h>
|
|
#include <wchar.h>
|
|
#include "local.h"
|
|
|
|
size_t
|
|
_DEFUN (_wcstombs_r, (reent, s, pwcs, n, state),
|
|
struct _reent *r,
|
|
char *__restrict s,
|
|
const wchar_t *__restrict pwcs,
|
|
size_t n,
|
|
mbstate_t *state)
|
|
{
|
|
char *ptr = s;
|
|
size_t max = n;
|
|
char buff[8];
|
|
int i, bytes, num_to_copy;
|
|
|
|
if (s == NULL)
|
|
{
|
|
size_t num_bytes = 0;
|
|
while (*pwcs != 0)
|
|
{
|
|
bytes = __WCTOMB (r, buff, *pwcs++, state);
|
|
if (bytes == -1)
|
|
return -1;
|
|
num_bytes += bytes;
|
|
}
|
|
return num_bytes;
|
|
}
|
|
else
|
|
{
|
|
while (n > 0)
|
|
{
|
|
bytes = __WCTOMB (r, buff, *pwcs, state);
|
|
if (bytes == -1)
|
|
return -1;
|
|
num_to_copy = (n > bytes ? bytes : (int)n);
|
|
for (i = 0; i < num_to_copy; ++i)
|
|
*ptr++ = buff[i];
|
|
|
|
if (*pwcs == 0x00)
|
|
return ptr - s - (n >= bytes);
|
|
++pwcs;
|
|
n -= num_to_copy;
|
|
}
|
|
return max;
|
|
}
|
|
}
|