mbsstr.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 59 行

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



/****
***** Find the first occurrence of 'substring' in 'string'.  If 'substring'
***** has zero length, return 'string'.  Equivalent to strstr().
****/

_WCRTLINK unsigned char _FFAR *_NEARFAR(_mbsstr,_fmbsstr)( const unsigned char _FFAR *string, const unsigned char _FFAR *substring )
{
    size_t              length;

//    if( !__IsDBCS )  return( strstr( string, substring ) );

    length = _NEARFAR(_mbslen,_fmbslen)( substring ); /* substring length */

    for( ; !_NEARFAR(_mbterm,_fmbterm)(string); string=_NEARFAR(_mbsinc,_fmbsinc)(string) ) {
        if( _NEARFAR(_mbsncmp,_fmbsncmp)(string,substring,length) == 0 )
            return( (unsigned char _FFAR*) string );
    }

    return( NULL );
}