| 1 | /* $Id: RTPathParentLength.cpp.h 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - RTPathParentLength - Code Template.
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| 4 | *
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| 5 | * This file included multiple times with different path style macros.
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| 6 | */
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| 7 |
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| 8 | /*
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| 9 | * Copyright (C) 2019-2023 Oracle and/or its affiliates.
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| 10 | *
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| 11 | * This file is part of VirtualBox base platform packages, as
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| 12 | * available from https://www.virtualbox.org.
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| 13 | *
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| 14 | * This program is free software; you can redistribute it and/or
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| 15 | * modify it under the terms of the GNU General Public License
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| 16 | * as published by the Free Software Foundation, in version 3 of the
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| 17 | * License.
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| 18 | *
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| 19 | * This program is distributed in the hope that it will be useful, but
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| 20 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 22 | * General Public License for more details.
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| 23 | *
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| 24 | * You should have received a copy of the GNU General Public License
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| 25 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 26 | *
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| 27 | * The contents of this file may alternatively be used under the terms
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| 28 | * of the Common Development and Distribution License Version 1.0
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| 29 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 30 | * in the VirtualBox distribution, in which case the provisions of the
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| 31 | * CDDL are applicable instead of those of the GPL.
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| 32 | *
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| 33 | * You may elect to license modified versions of this file under the
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| 34 | * terms and conditions of either the GPL or the CDDL or both.
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| 35 | *
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| 36 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 37 | */
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| 38 |
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| 39 | #include "rtpath-root-length-template.cpp.h"
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| 40 |
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| 41 | /**
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| 42 | * @copydoc RTPathParentLengthEx
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| 43 | */
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| 44 | static size_t RTPATH_STYLE_FN(rtPathParentLength)(const char *pszPath, uint32_t fFlags)
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| 45 | {
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| 46 | /*
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| 47 | * Determin the length of the root component so we can make sure
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| 48 | * we don't try ascend higher than it.
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| 49 | */
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| 50 | size_t const cchRoot = RTPATH_STYLE_FN(rtPathRootLengthEx)(pszPath, fFlags);
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| 51 |
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| 52 | /*
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| 53 | * Rewind to the start of the final component.
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| 54 | */
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| 55 | size_t cch = strlen(pszPath);
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| 56 |
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| 57 | /* Trailing slashes: */
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| 58 | while (cch > cchRoot && RTPATH_IS_SLASH(pszPath[cch - 1]))
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| 59 | cch--;
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| 60 |
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| 61 | /* The component: */
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| 62 | while (cch > cchRoot && !RTPATH_IS_SEP(pszPath[cch - 1]))
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| 63 | cch--;
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| 64 |
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| 65 | /* Done! */
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| 66 | return cch;
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| 67 | }
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| 68 |
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