mbsrchr.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

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



/****
***** Find the last occurrence of 'ch' in 'string'.  Equivalent to strrchr().
****/

_WCRTLINK unsigned char _FFAR *_NEARFAR(_mbsrchr,_fmbsrchr)( const unsigned char _FFAR *string, unsigned int ch )
{
    unsigned char _FFAR *   p = NULL;
    unsigned int            chTemp;

//    if( !__IsDBCS && !ch&0xFF00 )  return( strrchr( string, ch ) );

    /*** Search for the specified character ***/
    while( !_NEARFAR(_mbterm,_fmbterm)(string) ) {
        chTemp = _NEARFAR(_mbsnextc,_fmbsnextc)( string ); /* get character */
        if( chTemp == ch )                      /* is it the search char? */
            p = (unsigned char _FFAR*) string;  /* yes, store this address */
        string = _NEARFAR(_mbsinc,_fmbsinc)( string );  /* skip character */
    }

    if( ch != 0 )                               /* looking for NULL? */
        return( p );                            /* no, return last address */
    else
        return( (unsigned char _FFAR*) string );/* yes, return its address */
}