[NDK][KERNEL32][LIBCNTPR]
[reactos.git] / reactos / lib / sdk / crt / string / mbstowcs_nt.c
1 #include <ndk/umtypes.h>
2 #include <ndk/rtlfuncs.h>
3 #include <string.h>
4
5 #undef MB_CUR_MAX
6 #define MB_CUR_MAX 2
7
8 /*
9 * @implemented
10 */
11 int mbtowc (wchar_t *wchar, const char *mbchar, size_t count)
12 {
13 UCHAR mbarr[MB_CUR_MAX] = { 0 };
14 PUCHAR mbs = mbarr;
15 WCHAR wc;
16
17 if (mbchar == NULL)
18 return 0;
19
20 if (wchar == NULL)
21 return 0;
22
23 memcpy(mbarr, mbchar, min(count, sizeof mbarr));
24
25 wc = RtlAnsiCharToUnicodeChar(&mbs);
26
27 if (wc == L' ' && mbarr[0] != ' ')
28 return -1;
29
30 *wchar = wc;
31
32 return (int)(mbs - mbarr);
33 }
34
35 /*
36 * @implemented
37 */
38 size_t mbstowcs (wchar_t *wcstr, const char *mbstr, size_t count)
39 {
40 NTSTATUS Status;
41 ULONG Size;
42 ULONG Length;
43
44 Length = (ULONG)strlen (mbstr);
45
46 if (wcstr == NULL)
47 {
48 RtlMultiByteToUnicodeSize (&Size,
49 mbstr,
50 Length);
51
52 return (size_t)Size;
53 }
54
55 Status = RtlMultiByteToUnicodeN (wcstr,
56 (ULONG)count * sizeof(WCHAR),
57 &Size,
58 mbstr,
59 Length);
60 if (!NT_SUCCESS(Status))
61 return -1;
62
63 return (size_t)Size;
64 }
65
66 /* EOF */