mbbtype.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 71 行

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*  ========================================================================
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*    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
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* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
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****************************************************************************/


#include "variety.h"
#include <mbctype.h>
#include <mbstring.h>
#include "farfunc.h"
#include "mbchar.h"



_WCRTLINK extern int _mbbtype( unsigned char c, int type )
{
    if( __IsDBCS ) {
        if( __MBCodePage == 932 ) {
            if( type != _MBC_LEAD ) {
                if( (c>=0x81 && c<=0x9F)  ||  (c>=0xE0 && c<=0xFC) ) {
                    return( _MBC_LEAD );
                } else if( (c>=0x20 && c<=0x7E)  ||  (c>=0xA1 && c<=0xDF) ) {
                    return( _MBC_SINGLE );
                } else {
                    return( _MBC_ILLEGAL );
                }
            } else {
                if( (c>=0x40 && c<=0x7E)  ||  (c>=0x80 && c<=0xFC) ) {
                    return( _MBC_TRAIL );
                } else {
                    return( _MBC_ILLEGAL );
                }
            }
        } else {
            if( type == _MBC_LEAD ) {
                return( _ismbbtrail(c) ? _MBC_TRAIL : _MBC_ILLEGAL );
            } else {
                return( _ismbblead(c) ? _MBC_LEAD : _MBC_SINGLE );
            }
        }
    } else {
        return( _MBC_SINGLE );
    }
}