mbscspn.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 63 行

/****************************************************************************
*
*                            Open Watcom Project
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*    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
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#include "variety.h"
#include <mbstring.h>
#include "farfunc.h"



/****
***** Return the number of characters in the initial segment of 'string'
***** which consists entirely of characters not in 'charset'.  Equivalent
***** to strcspn().
****/

_WCRTLINK size_t _NEARFAR(_mbscspn,_fmbscspn)( const unsigned char _FFAR *string, const unsigned char _FFAR *charset )
{
    const char _FFAR *  stringStart = string;

//    if( !__IsDBCS )  return( strcspn( string, charset ) );

    /*** Count the number of characters in 'string' not from 'charset' ***/
    while( !_NEARFAR(_mbterm,_fmbterm)(string) ) {
        #ifdef __FARFUNC__
            if( _fmbschr(charset,_fmbsnextc(string)) != NULL )  break;
        #else
            if( _mbschr(charset,_mbsnextc(string)) != NULL )  break;
        #endif
        string = _NEARFAR(_mbsinc,_fmbsinc)( string ); /* skip char */
    }

    return( string - stringStart );
}