| 0,0 → 1,70 |
|---|
| /**************************************************************************** |
| * |
| * Open Watcom Project |
| * |
| * Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved. |
| * |
| * ======================================================================== |
| * |
| * This file contains Original Code and/or Modifications of Original |
| * Code as defined in and that are subject to the Sybase Open Watcom |
| * Public License version 1.0 (the 'License'). You may not use this file |
| * except in compliance with the License. BY USING THIS FILE YOU AGREE TO |
| * ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is |
| * provided with the Original Code and Modifications, and is also |
| * available at www.sybase.com/developer/opensource. |
| * |
| * The Original Code and all software distributed under the License are |
| * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| * EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM |
| * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR |
| * NON-INFRINGEMENT. Please see the License for the specific language |
| * governing rights and limitations under the License. |
| * |
| * ======================================================================== |
| * |
| * Description: WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE |
| * DESCRIBE IT HERE! |
| * |
| ****************************************************************************/ |
| |
| |
| #include "variety.h" |
| #include <mbstring.h> |
| #include "farfunc.h" |
| |
| |
| |
| /**** |
| ***** Convert a multibyte character to a wide character. |
| ****/ |
| |
| _WCRTLINK int _NEARFAR(mbtowc,_fmbtowc)( wchar_t _FFAR *pwc, const char _FFAR *ch, size_t n ) |
| { |
| |
| /*** Catch special cases ***/ |
| if( ch == NULL ) return( 0 ); |
| if( n == 0 ) return( -1 ); |
| if( *ch == '\0' ) { |
| if( pwc != NULL ) *pwc = L'\0'; |
| return( 0 ); |
| } |
| if( _ismbblead( ch[0] ) && ch[1] == '\0' ) return( -1 ); /* invalid */ |
| |
| /*** Convert the character ***/ |
| if( _ismbblead(*ch) && n>=2 ) { /* lead byte present? */ |
| if( pwc != NULL ) { |
| *pwc = (((wchar_t)ch[0])<<8) | /* convert to lead:trail */ |
| (wchar_t)ch[1]; |
| } |
| return( 2 ); /* return char size */ |
| } else if( !_ismbblead(*ch) ) { |
| if( pwc != NULL ) { |
| *pwc = (wchar_t)ch[0]; /* convert to 00:byte */ |
| } |
| return( 1 ); /* return char size */ |
| } else { |
| return( -1 ); /* n==1, but char 2 bytes */ |
| } |
| } |