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/* Copyright (C) 1995,1996 Robert de Bath <rdebath@cix.compulink.co.uk>

 * This file is part of the Linux-8086 C library and is distributed

 * under the GNU Library General Public License.

 */

#include <string.h>

#if 1

/* We've now got a nice fast strchr and memcmp use them */

char *

strstr(s1, s2)

char *s1; char *s2;

{

   register int l = strlen(s2);

   register char * p = s1;

   if( l==0 ) return p;

   while (p = strchr(p, *s2))

   {

      if( memcmp(p, s2, l) == 0 )

         return p;

      p++;

   }

   return (char *) 0;

}

#else

/* This is a nice simple self contained strstr,

   now go and work out why the GNU one is faster :-) */

char *strstr(str1, str2)

char *str1, *str2;

{

    register char *Sptr, *Tptr;

    int len = strlen(str1) -strlen(str2) + 1;

    if (*str2)

        for (; len > 0;  len--, str1++){

            if (*str1 != *str2)

                continue;

            for (Sptr = str1, Tptr = str2; *Tptr != '\0'; Sptr++, Tptr++)

                if (*Sptr != *Tptr)

                    break;

            if (*Tptr == '\0')

                return (char*) str1;

        }

    return (char*)0;

}

#endif