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/***************************************************************************

 *             __________               __   ___.

 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___

 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /

 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <

 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \

 *                     \/            \/     \/    \/            \/

 * $Id: $

 *

 * Copyright (C) 1991, 1992  Linus Torvalds

 * (from linux/lib/string.c)

 *

 ****************************************************************************/

#include "global.h"

#include <string.h>

/**

 * strstr - Find the first substring in a %NUL terminated string

 * @s1: The string to be searched

 * @s2: The string to search for

 */

char *strstr(const char *s1, const char *s2)

{

    int l1, l2;

    l2 = strlen(s2);

    if (!l2)

        return (char *)s1;

    l1 = strlen(s1);

    while (l1 >= l2) {

        l1--;

        if (!memcmp(s1, s2, l2))

            return (char *)s1;

        s1++;

    }

    return NULL;

}