| 1 | /* $Id: RTPathParentLength.cpp.h 82968 2020-02-04 10:35:17Z 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) 2019-2020 Oracle Corporation
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| 10 | *
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| 11 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 12 | * available from http://www.virtualbox.org. This file is free software;
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| 13 | * you can redistribute it and/or modify it under the terms of the GNU
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| 14 | * General Public License (GPL) as published by the Free Software
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| 15 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 16 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 17 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 18 | *
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| 19 | * The contents of this file may alternatively be used under the terms
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| 20 | * of the Common Development and Distribution License Version 1.0
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| 21 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 22 | * VirtualBox OSE distribution, in which case the provisions of the
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| 23 | * CDDL are applicable instead of those of the GPL.
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| 24 | *
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| 25 | * You may elect to license modified versions of this file under the
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| 26 | * terms and conditions of either the GPL or the CDDL or both.
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| 27 | */
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| 28 |
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| 29 | #include "rtpath-root-length-template.cpp.h"
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| 30 |
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| 31 | /**
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| 32 | * @copydoc RTPathParentLengthEx
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| 33 | */
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| 34 | static size_t RTPATH_STYLE_FN(rtPathParentLength)(const char *pszPath, uint32_t fFlags)
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| 35 | {
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| 36 | /*
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| 37 | * Determin the length of the root component so we can make sure
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| 38 | * we don't try ascend higher than it.
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| 39 | */
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| 40 | size_t const cchRoot = RTPATH_STYLE_FN(rtPathRootLengthEx)(pszPath, fFlags);
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| 41 |
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| 42 | /*
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| 43 | * Rewind to the start of the final component.
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| 44 | */
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| 45 | size_t cch = strlen(pszPath);
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| 46 |
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| 47 | /* Trailing slashes: */
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| 48 | while (cch > cchRoot && RTPATH_IS_SLASH(pszPath[cch - 1]))
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| 49 | cch--;
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| 50 |
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| 51 | /* The component: */
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| 52 | while (cch > cchRoot && !RTPATH_IS_SEP(pszPath[cch - 1]))
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| 53 | cch--;
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| 54 |
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| 55 | /* Done! */
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| 56 | return cch;
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| 57 | }
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| 58 |
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