23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner/*
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * CDDL HEADER START
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner *
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * The contents of this file are subject to the terms of the
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * Common Development and Distribution License (the "License").
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * You may not use this file except in compliance with the License.
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner *
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * or http://www.opensolaris.org/os/licensing.
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * See the License for the specific language governing permissions
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * and limitations under the License.
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner *
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * When distributing Covered Code, include this CDDL HEADER in each
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * If applicable, add the following below this CDDL HEADER, with the
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * fields enclosed by brackets "[]" replaced with your own identifying
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * information: Portions Copyright [yyyy] [name of copyright owner]
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner *
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * CDDL HEADER END
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner */
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner/*
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner */
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner/*
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * Returns the number of non-NULL characters in str,
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * but not more than maxlen. Does not look past str + maxlen.
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner */
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#include "lint.h"
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#include <stdlib.h>
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#include <wchar.h>
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulknersize_t
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulknerwcsnlen(const wchar_t *str, size_t maxlen)
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner{
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner const wchar_t *ptr = str;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner if (maxlen != 0) {
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner do {
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner if (*ptr++ == L'\0') {
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner ptr--;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner break;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner }
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner } while (--maxlen != 0);
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner }
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner return (ptr - str);
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner}