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71 lines
1.3 KiB
C
71 lines
1.3 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/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 <precomp.h>
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#include <mbstring.h>
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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((unsigned char)*str) ? 1 : (size>1 ? 2 : -1);
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}
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return 0;
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}
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size_t __cdecl mbrlen(const char *str, size_t len, mbstate_t *state)
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{
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mbstate_t s = (state ? *state : 0);
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size_t ret;
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if(!len || !str || !*str)
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return 0;
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if(get_locinfo()->mb_cur_max == 1) {
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return 1;
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}else if(!s && isleadbyte((unsigned char)*str)) {
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if(len == 1) {
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s = (unsigned char)*str;
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ret = -2;
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}else {
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ret = 2;
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}
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}else if(!s) {
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ret = 1;
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}else {
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s = 0;
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ret = 2;
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}
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if(state)
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*state = s;
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return ret;
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}
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