mbcupper.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 68 行

/****************************************************************************
*
*                            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
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*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
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*    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
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* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
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****************************************************************************/


#include "variety.h"
#ifdef __NT__
    #include <windows.h>
    #include <winnls.h>
#else
    #include <ctype.h>
#endif
#include "mbchar.h"
#include <mbstring.h>

/**
 * Convert a single character to uppercase.  Equivalent to toupper().
 */

_WCRTLINK unsigned int _mbctoupper( unsigned int ch )
{
#ifdef __NT__
    char                mbc[MB_LEN_MAX+1];

    mbc[1] = '\0';      // [0] and possibly [1] are set with chars
    mbc[2] = '\0';
    _mbvtop( ch, mbc );
    CharUpper( mbc ); // call the Win32 API
    return( _mbsnextc( mbc ) );
#else                               /* OS/2 and others */
    if( ch & 0xFF00 ) {
        if( __MBCodePage == 932 ) {
            return( _mbdtoupper( ch ) );
        }
        return( ch );   // we don't know what to do - just return it
    } else {
        return( toupper( ch ) );
    }
#endif
}