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37 lines
761 B
C
37 lines
761 B
C
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/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS CRT
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* PURPOSE: Implementation of _mbsnlen
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* FILE: lib/sdk/crt/string/_mbsnlen.c
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* PROGRAMMER: Timo Kreuzer
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*/
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#include <mbstring.h>
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_Check_return_
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_CRTIMP
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size_t
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__cdecl
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_mbsnlen(
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_In_z_ const unsigned char *pmbstr,
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_In_ size_t cjMaxLen)
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{
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size_t cchCount = 0;
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unsigned char jMbsByte;
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/* Loop while we have bytes to process */
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while (cjMaxLen-- > 0)
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{
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/* Get next mb byte */
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jMbsByte = *pmbstr++;
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/* If this is 0, we're done */
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if (jMbsByte == 0) break;
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/* Don't count lead bytes */
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if (!_ismbblead(jMbsByte)) cchCount++;
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}
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return cchCount;
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}
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