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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
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