38 lines
888 B
C
38 lines
888 B
C
|
/******************************************************************************
|
||
|
|
* Copyright (c) 2004, 2008 IBM Corporation
|
||
|
|
* All rights reserved.
|
||
|
|
* This program and the accompanying materials
|
||
|
|
* are made available under the terms of the BSD License
|
||
|
|
* which accompanies this distribution, and is available at
|
||
|
|
* http://www.opensource.org/licenses/bsd-license.php
|
||
|
|
*
|
||
|
|
* Contributors:
|
||
|
|
* IBM Corporation - initial implementation
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
char *
|
||
|
|
strstr(const char *hay, const char *needle)
|
||
|
|
{
|
||
|
|
char *pos;
|
||
|
|
int hlen, nlen;
|
||
|
|
|
||
|
|
if (hay == NULL || needle == NULL)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
hlen = strlen(hay);
|
||
|
|
nlen = strlen(needle);
|
||
|
|
if (nlen < 1)
|
||
|
|
return (char *)hay;
|
||
|
|
|
||
|
|
for (pos = (char *)hay; pos < hay + hlen; pos++) {
|
||
|
|
if (strncmp(pos, needle, nlen) == 0) {
|
||
|
|
return pos;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|