source: vbox/trunk/src/VBox/Runtime/common/path/RTPathStripTrailingSlash.cpp

/* $Id: RTPathStripTrailingSlash.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
/** @file
 * IPRT - RTPathSTripTrailingSlash
 */

/*
 * Copyright (C) 2006-2023 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 "internal/iprt.h"
#include <iprt/path.h>
#include <iprt/string.h>
#include <iprt/ctype.h>



RTDECL(size_t) RTPathStripTrailingSlash(char *pszPath)
{
    size_t off = strlen(pszPath);
    while (off > 1)
    {
        off--;
        switch (pszPath[off])
        {
            case '/':
#if defined(RT_OS_WINDOWS) || defined(RT_OS_OS2)
            case '\\':
                if (    off == 2
                    &&  pszPath[1] == ':'
                    &&  RT_C_IS_ALPHA(pszPath[0]))
                    return off + 1;
#endif
                pszPath[off] = '\0';
                break;

            default:
                return off + 1;
        }
    }

    return 1;
}