50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
/*-------------------------------------------------------------------------
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mbstowcs.c - convert a multibyte string to a wide character string
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Copyright (C) 2016, Philipp Klaus Krause, pkk@spth.de
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This library is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this library; see the file COPYING. If not, write to the
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Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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As a special exception, if you link this library with other files,
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some of which are compiled with SDCC, to produce an executable,
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this library does not by itself cause the resulting executable to
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be covered by the GNU General Public License. This exception does
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not however invalidate any other reasons why the executable file
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might be covered by the GNU General Public License.
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-------------------------------------------------------------------------*/
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#include <stdlib.h>
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#include <limits.h>
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size_t mbstowcs(wchar_t *restrict pwcs, const char *restrict s, size_t n)
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{
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size_t m = 0;
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while(n--)
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{
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int b = mbtowc(pwcs++, s, MB_LEN_MAX);
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if(!b)
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break;
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if(b < 0)
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return(-1);
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s += b;
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m++;
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}
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return(m);
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}
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