#include <ndk/rtlfuncs.h>
#include <string.h>
+WCHAR NTAPI RtlAnsiCharToUnicodeChar(IN OUT PUCHAR *AnsiChar);
+#undef MB_CUR_MAX
+#define MB_CUR_MAX 2
+
/*
* @implemented
*/
int mbtowc (wchar_t *wchar, const char *mbchar, size_t count)
{
- NTSTATUS Status;
- ULONG Size;
+ UCHAR mbarr[MB_CUR_MAX] = { 0 };
+ PUCHAR mbs = mbarr;
+ WCHAR wc;
+
+ if (mbchar == NULL)
+ return 0;
if (wchar == NULL)
return 0;
- Status = RtlMultiByteToUnicodeN (wchar,
- sizeof(WCHAR),
- &Size,
- mbchar,
- count);
- if (!NT_SUCCESS(Status))
+ memcpy(mbarr, mbchar, min(count, sizeof mbarr));
+
+ wc = RtlAnsiCharToUnicodeChar(&mbs);
+
+ if (wc == L' ' && mbarr[0] != ' ')
return -1;
- return (int)Size;
+ *wchar = wc;
+
+ return mbs - mbarr;
}
/*
}
Status = RtlMultiByteToUnicodeN (wcstr,
- count,
+ count * sizeof(WCHAR),
&Size,
mbstr,
Length);