2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License (the "License").
2N/A * You may not use this file except in compliance with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A
2N/A/*
2N/A * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
2N/A */
2N/A
2N/A/* Copyright (c) 1988 AT&T */
2N/A/* All Rights Reserved */
2N/A
2N/A#include "lint.h"
2N/A#include <string.h>
2N/A#include <ctype.h>
2N/A#include <sys/types.h>
2N/A
2N/A/*
2N/A * strcasestr() locates the first occurrence in the string s1 of the
2N/A * sequence of characters (excluding the terminating null character)
2N/A * in the string s2, ignoring case. strcasestr() returns a pointer
2N/A * to the located string, or a null pointer if the string is not found.
2N/A * If s2 is empty, the function returns s1.
2N/A */
2N/A
2N/Achar *
2N/Astrcasestr(const char *s1, const char *s2)
2N/A{
2N/A int *cm = __trans_lower;
2N/A const uchar_t *us1 = (const uchar_t *)s1;
2N/A const uchar_t *us2 = (const uchar_t *)s2;
2N/A const uchar_t *tptr;
2N/A int c;
2N/A
2N/A if (us2 == NULL || *us2 == '\0')
2N/A return ((char *)us1);
2N/A
2N/A c = cm[*us2];
2N/A while (*us1 != '\0') {
2N/A if (c == cm[*us1++]) {
2N/A tptr = us1;
2N/A while (cm[c = *++us2] == cm[*us1++] && c != '\0')
2N/A continue;
2N/A if (c == '\0')
2N/A return ((char *)tptr - 1);
2N/A us1 = tptr;
2N/A us2 = (const uchar_t *)s2;
2N/A c = cm[*us2];
2N/A }
2N/A }
2N/A
2N/A return (NULL);
2N/A}