| 1 | /* $Id: RTPathFindCommon.cpp 96407 2022-08-22 17:43:14Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - RTPathFindCommon implementations.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2020-2022 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/alloca.h>
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| 45 | #include <iprt/assert.h>
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| 46 | #include <iprt/errcore.h>
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| 47 | #include <iprt/mem.h>
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| 48 | #include <iprt/string.h>
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| 49 | #include <iprt/uni.h>
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| 50 |
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| 51 |
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| 52 | #define RTPATH_TEMPLATE_CPP_H "RTPathFindCommon.cpp.h"
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| 53 | #include "rtpath-expand-template.cpp.h"
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| 54 |
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| 55 |
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| 56 | RTDECL(size_t) RTPathFindCommonEx(size_t cPaths, const char * const *papszPaths, uint32_t fFlags)
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| 57 | {
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| 58 | /*
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| 59 | * Validate input.
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| 60 | */
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| 61 | AssertReturn(RTPATH_STR_F_IS_VALID(fFlags, RTPATHFINDCOMMON_F_IGNORE_DOTDOT), 0);
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| 62 | AssertReturn(cPaths > 0, 0);
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| 63 | AssertPtrReturn(papszPaths, 0);
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| 64 | size_t i = cPaths;
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| 65 | while (i-- > 0)
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| 66 | AssertPtrReturn(papszPaths[i], 0);
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| 67 |
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| 68 | /*
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| 69 | * Duplicate papszPaths so we can have individual positions in each path.
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| 70 | * Use the stack if we haven't got too many paths.
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| 71 | */
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| 72 | void *pvFree;
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| 73 | const char **papszCopy;
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| 74 | size_t cbNeeded = cPaths * sizeof(papszCopy[0]);
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| 75 | if (cbNeeded <= _2K)
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| 76 | {
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| 77 | pvFree = NULL;
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| 78 | papszCopy = (const char **)alloca(cbNeeded);
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| 79 | }
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| 80 | else
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| 81 | {
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| 82 | pvFree = RTMemTmpAlloc(cbNeeded);
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| 83 | papszCopy = (const char **)pvFree;
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| 84 | }
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| 85 | AssertReturn(papszCopy, 0);
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| 86 | memcpy(papszCopy, papszPaths, cbNeeded);
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| 87 |
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| 88 | /*
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| 89 | * Invoke the worker for the selected path style.
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| 90 | */
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| 91 | size_t cchRet;
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| 92 | switch (fFlags & RTPATH_STR_F_STYLE_MASK)
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| 93 | {
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| 94 | #if RTPATH_STYLE == RTPATH_STR_F_STYLE_DOS
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| 95 | case RTPATH_STR_F_STYLE_HOST:
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| 96 | #endif
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| 97 | case RTPATH_STR_F_STYLE_DOS:
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| 98 | cchRet= rtPathFindCommonStyleDos(cPaths, papszCopy, fFlags);
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| 99 | break;
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| 100 |
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| 101 | #if RTPATH_STYLE != RTPATH_STR_F_STYLE_DOS
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| 102 | case RTPATH_STR_F_STYLE_HOST:
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| 103 | #endif
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| 104 | case RTPATH_STR_F_STYLE_UNIX:
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| 105 | cchRet = rtPathFindCommonStyleUnix(cPaths, papszCopy, fFlags);
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| 106 | break;
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| 107 |
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| 108 | default:
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| 109 | AssertFailedStmt(cchRet = 0); /* impossible */
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| 110 | }
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| 111 |
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| 112 | /*
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| 113 | * Clean up and return.
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| 114 | */
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| 115 | if (pvFree)
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| 116 | RTMemTmpFree(pvFree);
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| 117 | return cchRet;
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| 118 | }
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| 119 | RT_EXPORT_SYMBOL(RTPathFindCommonEx);
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| 120 |
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| 121 |
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| 122 | RTDECL(size_t) RTPathFindCommon(size_t cPaths, const char * const *papszPaths)
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| 123 | {
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| 124 | return RTPathFindCommonEx(cPaths, papszPaths, RTPATH_STR_F_STYLE_HOST);
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| 125 | }
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| 126 | RT_EXPORT_SYMBOL(RTPathFindCommon);
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| 127 |
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