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/* $Id: RTPathParentLength.cpp.h $ */
/** @file
* IPRT - RTPathParentLength - Code Template.
*
* This file included multiple times with different path style macros.
*/
/*
* Copyright (C) 2019-2023 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
*/
#include "rtpath-root-length-template.cpp.h"
/**
* @copydoc RTPathParentLengthEx
*/
static size_t RTPATH_STYLE_FN(rtPathParentLength)(const char *pszPath, uint32_t fFlags)
{
/*
* Determin the length of the root component so we can make sure
* we don't try ascend higher than it.
*/
size_t const cchRoot = RTPATH_STYLE_FN(rtPathRootLengthEx)(pszPath, fFlags);
/*
* Rewind to the start of the final component.
*/
size_t cch = strlen(pszPath);
/* Trailing slashes: */
while (cch > cchRoot && RTPATH_IS_SLASH(pszPath[cch - 1]))
cch--;
/* The component: */
while (cch > cchRoot && !RTPATH_IS_SEP(pszPath[cch - 1]))
cch--;
/* Done! */
return cch;
}
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