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43 lines
801 B
C
43 lines
801 B
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* FILE: lib/sdk/crt/mbstring/mbclen.c
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* PURPOSE: Determines the length of a multi byte character
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* PROGRAMERS:
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* Copyright 1999 Alexandre Julliard
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* Copyright 2000 Jon Griffths
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*
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*/
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#include <mbstring.h>
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#include <stdlib.h>
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int isleadbyte(int byte);
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/*
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* @implemented
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*/
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size_t _mbclen(const unsigned char *s)
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{
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return _ismbblead(*s) ? 2 : 1;
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}
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size_t _mbclen2(const unsigned int s)
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{
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return (_ismbblead(s>>8) && _ismbbtrail(s&0x00FF)) ? 2 : 1;
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}
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/*
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* assume MB_CUR_MAX == 2
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*
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* @implemented
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*/
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int mblen( const char *str, size_t size )
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{
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if (str && *str && size)
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{
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return !isleadbyte(*str) ? 1 : (size>1 ? 2 : -1);
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}
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return 0;
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}
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