| 1 | /* $Id: RTPathSplitReassemble.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - RTPathSplitReassemble.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2013-2024 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #include "internal/iprt.h"
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| 42 | #include <iprt/path.h>
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| 43 |
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| 44 | #include <iprt/assert.h>
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| 45 | #include <iprt/errcore.h>
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| 46 | #include <iprt/string.h>
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| 47 |
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| 48 |
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| 49 | RTDECL(int) RTPathSplitReassemble(PRTPATHSPLIT pSplit, uint32_t fFlags, char *pszDstPath, size_t cbDstPath)
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| 50 | {
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| 51 | /*
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| 52 | * Input validation.
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| 53 | */
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| 54 | AssertPtrReturn(pSplit, VERR_INVALID_POINTER);
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| 55 | AssertReturn(pSplit->cComps > 0, VERR_INVALID_PARAMETER);
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| 56 | AssertReturn(RTPATH_STR_F_IS_VALID(fFlags, 0) && !(fFlags & RTPATH_STR_F_MIDDLE), VERR_INVALID_FLAGS);
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| 57 | AssertPtrReturn(pszDstPath, VERR_INVALID_POINTER);
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| 58 | AssertReturn(cbDstPath > pSplit->cchPath, VERR_BUFFER_OVERFLOW);
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| 59 |
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| 60 | /*
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| 61 | * Figure which slash to use.
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| 62 | */
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| 63 | char chSlash;
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| 64 | switch (fFlags & RTPATH_STR_F_STYLE_MASK)
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| 65 | {
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| 66 | case RTPATH_STR_F_STYLE_HOST:
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| 67 | chSlash = RTPATH_SLASH;
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| 68 | break;
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| 69 |
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| 70 | case RTPATH_STR_F_STYLE_DOS:
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| 71 | chSlash = '\\';
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| 72 | break;
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| 73 |
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| 74 | case RTPATH_STR_F_STYLE_UNIX:
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| 75 | chSlash = '/';
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| 76 | break;
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| 77 |
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| 78 | default:
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| 79 | AssertFailedReturn(VERR_INVALID_FLAGS); /* impossible */
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| 80 | }
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| 81 |
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| 82 | /*
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| 83 | * Do the joining.
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| 84 | */
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| 85 | uint32_t const cchOrgPath = pSplit->cchPath;
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| 86 | size_t cchDstPath = 0;
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| 87 | uint32_t const cComps = pSplit->cComps;
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| 88 | uint32_t idxComp = 0;
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| 89 | char *pszDst = pszDstPath;
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| 90 | size_t cchComp;
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| 91 |
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| 92 | if (RTPATH_PROP_HAS_ROOT_SPEC(pSplit->fProps))
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| 93 | {
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| 94 | cchComp = strlen(pSplit->apszComps[0]);
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| 95 | cchDstPath += cchComp;
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| 96 | AssertReturn(cchDstPath <= cchOrgPath, VERR_INVALID_PARAMETER);
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| 97 | memcpy(pszDst, pSplit->apszComps[0], cchComp);
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| 98 |
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| 99 | /* fix the slashes */
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| 100 | char chOtherSlash = chSlash == '\\' ? '/' : '\\';
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| 101 | while (cchComp-- > 0)
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| 102 | {
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| 103 | if (*pszDst == chOtherSlash)
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| 104 | *pszDst = chSlash;
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| 105 | pszDst++;
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| 106 | }
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| 107 | idxComp = 1;
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| 108 | }
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| 109 |
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| 110 | while (idxComp < cComps)
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| 111 | {
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| 112 | cchComp = strlen(pSplit->apszComps[idxComp]);
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| 113 | cchDstPath += cchComp;
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| 114 | AssertReturn(cchDstPath <= cchOrgPath, VERR_INVALID_PARAMETER);
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| 115 | memcpy(pszDst, pSplit->apszComps[idxComp], cchComp);
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| 116 | pszDst += cchComp;
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| 117 | idxComp++;
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| 118 | if (idxComp != cComps || (pSplit->fProps & RTPATH_PROP_DIR_SLASH))
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| 119 | {
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| 120 | cchDstPath++;
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| 121 | AssertReturn(cchDstPath <= cchOrgPath, VERR_INVALID_PARAMETER);
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| 122 | *pszDst++ = chSlash;
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| 123 | }
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| 124 | }
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| 125 |
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| 126 | *pszDst = '\0';
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| 127 |
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| 128 | return VINF_SUCCESS;
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| 129 | }
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| 130 |
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