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70 lines
1.2 KiB
C
70 lines
1.2 KiB
C
#define WIN32_NO_STATUS
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#include <windows.h>
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#include <ndk/umtypes.h>
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#include <ndk/rtlfuncs.h>
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#include <string.h>
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WCHAR NTAPI RtlAnsiCharToUnicodeChar(IN OUT PUCHAR *AnsiChar);
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#undef MB_CUR_MAX
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#define MB_CUR_MAX 2
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/*
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* @implemented
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*/
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int mbtowc (wchar_t *wchar, const char *mbchar, size_t count)
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{
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UCHAR mbarr[MB_CUR_MAX] = { 0 };
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PUCHAR mbs = mbarr;
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WCHAR wc;
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if (mbchar == NULL)
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return 0;
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if (wchar == NULL)
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return 0;
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memcpy(mbarr, mbchar, min(count, sizeof mbarr));
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wc = RtlAnsiCharToUnicodeChar(&mbs);
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if (wc == L' ' && mbarr[0] != ' ')
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return -1;
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*wchar = wc;
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return (int)(mbs - mbarr);
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}
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/*
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* @implemented
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*/
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size_t mbstowcs (wchar_t *wcstr, const char *mbstr, size_t count)
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{
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NTSTATUS Status;
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ULONG Size;
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ULONG Length;
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Length = (ULONG)strlen (mbstr);
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if (wcstr == NULL)
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{
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RtlMultiByteToUnicodeSize (&Size,
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mbstr,
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Length);
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return (size_t)Size;
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}
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Status = RtlMultiByteToUnicodeN (wcstr,
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(ULONG)count * sizeof(WCHAR),
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&Size,
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mbstr,
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Length);
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if (!NT_SUCCESS(Status))
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return -1;
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return (size_t)Size;
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}
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/* EOF */
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