46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
/*
|
|
* Copyright (c) 1991-1994 by the University of Southern California
|
|
*
|
|
* For copying and distribution information, please see the file
|
|
* <usc-license.h>.
|
|
*/
|
|
|
|
#include <usc-license.h>
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include <pmachine.h>
|
|
|
|
#include <pfs.h>
|
|
|
|
/*
|
|
* sindex - Find first instance of string 2 in string 1
|
|
*
|
|
* SINDEX scans string 1 for the first instance of string
|
|
* 2. If found, SINDEX returns a pointer to the first
|
|
* character of that instance. If no instance is found,
|
|
* SINDEX returns NULL (0).
|
|
*
|
|
* ARGS: s1 - string to be searched
|
|
* s2 - string to be found
|
|
* RETURNS: First instance of s2 in s1, or NULL (0) if not found
|
|
*/
|
|
const char *
|
|
sindex(const char *s1 /* String to be searched */,
|
|
const char *s2 /* String to be found */)
|
|
{
|
|
const char *s = s1; /* Temp pointer to string */
|
|
|
|
/* Check for first character of s2 */
|
|
while((s = strchr(s,*s2)) != NULL) {
|
|
if(strncmp(s,s2,strlen(s2)) == 0)
|
|
return(s);
|
|
s++;
|
|
}
|
|
|
|
/* We didn't find it */
|
|
return(NULL);
|
|
}
|
|
|