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#include "mb_wc_common.h"
#include <wchar.h>
#include <stdlib.h>
#include <errno.h>
#include <limits.h>
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
static int __MINGW_ATTRIB_NONNULL(1)
__wcrtomb_cp (char *dst, wchar_t wc, const unsigned int cp,
const unsigned int mb_max)
{
if (cp == 0)
{
if (wc > 255)
{
errno = EILSEQ;
return -1;
}
*dst = (char) wc;
return 1;
}
else
{
int invalid_char = 0;
int size = WideCharToMultiByte (cp, 0 /* Is this correct flag? */,
&wc, 1, dst, mb_max,
NULL, &invalid_char);
if (size == 0 || invalid_char)
{
errno = EILSEQ;
return -1;
}
return size;
}
}
size_t
wcrtomb (char *dst, wchar_t wc, mbstate_t * __UNUSED_PARAM (ps))
{
char byte_bucket [MB_LEN_MAX];
char* tmp_dst = dst ? dst : byte_bucket;
return (size_t)__wcrtomb_cp (tmp_dst, wc, get_codepage (),
MB_CUR_MAX);
}
size_t wcsrtombs (char *dst, const wchar_t **src, size_t len,
mbstate_t * __UNUSED_PARAM (ps))
{
int ret = 0;
size_t n = 0;
const unsigned int cp = get_codepage();
const unsigned int mb_max = MB_CUR_MAX;
const wchar_t *pwc = *src;
if (src == NULL || *src == NULL) /* undefined behavior */
return 0;
if (dst != NULL)
{
while (n < len)
{
if ((ret = __wcrtomb_cp (dst, *pwc, cp, mb_max)) <= 0)
return (size_t) -1;
n += ret;
dst += ret;
if (*(dst - 1) == '\0')
{
*src = (wchar_t*) NULL;;
return (n - 1);
}
pwc++;
}
*src = pwc;
}
else
{
char byte_bucket [MB_LEN_MAX];
while (n < len)
{
if ((ret = __wcrtomb_cp (byte_bucket, *pwc, cp, mb_max))
<= 0)
return (size_t) -1;
n += ret;
if (byte_bucket [ret - 1] == '\0')
return (n - 1);
pwc++;
}
}
return n;
}
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