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54 lines
1 KiB
C
54 lines
1 KiB
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/ismblead.c
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* PURPOSE: Checks for a leading byte
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* PROGRAMERS:
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* Copyright 1999 Ariadne, Taiji Yamada
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* Copyright 1999 Alexandre Julliard
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* Copyright 2000 Jon Griffths
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* Copyright 2008 Samuel Serapion adapted from PROJECT C Library
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*
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*/
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#include <precomp.h>
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#include <mbctype.h>
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/*
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* @implemented
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*/
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int _ismbblead(unsigned int c)
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{
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return (get_mbcinfo()->mbctype[(c&0xff) + 1] & _M1) != 0;
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}
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/*
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* @implemented
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*/
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int _ismbslead( const unsigned char *start, const unsigned char *str)
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{
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int lead = 0;
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/* Lead bytes can also be trail bytes so we need to analyse the string
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*/
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while (start <= str)
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{
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if (!*start)
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return 0;
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lead = !lead && _ismbblead(*start);
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start++;
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}
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return lead ? -1 : 0;
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}
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/*
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* @implemented
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*/
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unsigned char *__p__mbctype(void)
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{
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return get_mbcinfo()->mbctype;
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}
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