/* $Id: RTUtf16NCmpUtf8.cpp $ */
/** @file
 * IPRT - RTUtf16NCmpUtf8.
 */

/*
 * Copyright (C) 2010-2023 Oracle and/or its affiliates.
 *
 * This file is part of VirtualBox base platform packages, as
 * available from https://www.virtualbox.org.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation, in version 3 of the
 * License.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <https://www.gnu.org/licenses>.
 *
 * The contents of this file may alternatively be used under the terms
 * of the Common Development and Distribution License Version 1.0
 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
 * in the VirtualBox distribution, in which case the provisions of the
 * CDDL are applicable instead of those of the GPL.
 *
 * You may elect to license modified versions of this file under the
 * terms and conditions of either the GPL or the CDDL or both.
 *
 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
 */


/*********************************************************************************************************************************
*   Header Files                                                                                                                 *
*********************************************************************************************************************************/
#include <iprt/utf16.h>
#include "internal/iprt.h"


RTDECL(int) RTUtf16NCmpUtf8(PCRTUTF16 pwsz1, const char *psz2, size_t cwcMax1, size_t cchMax2)
{
    if (!pwsz1 || !cwcMax1)
        return -1;
    if (!psz2 || !cchMax2)
        return 1;

    while (cwcMax1 > 0 && cchMax2 > 0)
    {
        RTUNICP uc1;
        int rc = RTUtf16GetCpNEx(&pwsz1, &cwcMax1, &uc1);
        if (RT_SUCCESS(rc))
        {
            RTUNICP uc2;
            rc = RTStrGetCpNEx(&psz2, &cchMax2, &uc2);
            if (RT_SUCCESS(rc))
            {
                if (uc1 != uc2)
                    return uc1 < uc2 ? -1 : 1;
                if (!uc1)
                    return 0;
            }
            else
                return 1;
        }
    }
    return 0;
}
RT_EXPORT_SYMBOL(RTUtf16NCmpUtf8);

