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70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
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/*
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* msvcrt.dll mbcs functions
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*
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* Copyright 1999 Alexandre Julliard
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* Copyright 2000 Jon Griffths
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <precomp.h>
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#include <locale.h>
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/*********************************************************************
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* mbrtowc(MSVCRT.@)
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*/
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size_t CDECL mbrtowc(wchar_t *dst, const char *str,
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size_t n, mbstate_t *state)
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{
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mbstate_t s = (state ? *state : 0);
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char tmpstr[2];
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int len = 0;
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if(dst)
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*dst = 0;
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if(!n || !str || !*str)
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return 0;
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if(___mb_cur_max_func() == 1) {
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tmpstr[len++] = *str;
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}else if(!s && isleadbyte((unsigned char)*str)) {
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if(n == 1) {
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s = (unsigned char)*str;
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len = -2;
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}else {
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tmpstr[0] = str[0];
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tmpstr[1] = str[1];
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len = 2;
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}
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}else if(!s) {
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tmpstr[len++] = *str;
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}else {
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tmpstr[0] = s;
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tmpstr[1] = *str;
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len = 2;
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s = 0;
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}
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if(len > 0) {
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if(!MultiByteToWideChar(___lc_codepage_func(), 0, tmpstr, len, dst, dst ? 1 : 0))
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len = -1;
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}
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if(state)
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*state = s;
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return len;
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}
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