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#include <stdlib.h>
#include <wchar.h>
#include "local.h"
size_t
_DEFUN (_wcstombs_r, (reent, s, pwcs, n, state),
struct _reent *r _AND
char *__restrict s _AND
const wchar_t *__restrict pwcs _AND
size_t n _AND
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++, __locale_charset (), state);
if (bytes == -1)
return -1;
num_bytes += bytes;
}
return num_bytes;
}
else
{
while (n > 0)
{
bytes = __wctomb (r, buff, *pwcs, __locale_charset (), 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;
}
}
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