| 1 | /* $Id: RTPathAppendEx.cpp 96609 2022-09-06 14:13:23Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - RTPathAppendEx
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2009-2022 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/assert.h>
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| 45 | #include <iprt/ctype.h>
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| 46 | #include <iprt/errcore.h>
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| 47 | #include <iprt/string.h>
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| 48 |
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| 49 | #define RTPATH_TEMPLATE_CPP_H "RTPathAppendEx.cpp.h"
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| 50 | #include "rtpath-expand-template.cpp.h"
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| 51 |
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| 52 |
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| 53 | /**
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| 54 | * Figures the length of the root part of the path.
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| 55 | *
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| 56 | * @returns length of the root specifier.
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| 57 | * @retval 0 if none.
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| 58 | *
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| 59 | * @param pszPath The path to investigate.
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| 60 | *
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| 61 | * @remarks Unnecessary root slashes will not be counted. The caller will have
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| 62 | * to deal with it where it matters. (Unlike rtPathRootSpecLen which
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| 63 | * counts them.)
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| 64 | */
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| 65 | static size_t rtPathRootSpecLen2(const char *pszPath)
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| 66 | {
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| 67 | /* fend of wildlife. */
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| 68 | if (!pszPath)
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| 69 | return 0;
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| 70 |
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| 71 | /* Root slash? */
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| 72 | if (RTPATH_IS_SLASH(pszPath[0]))
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| 73 | {
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| 74 | #if defined (RT_OS_OS2) || defined (RT_OS_WINDOWS)
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| 75 | /* UNC? */
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| 76 | if ( RTPATH_IS_SLASH(pszPath[1])
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| 77 | && pszPath[2] != '\0'
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| 78 | && !RTPATH_IS_SLASH(pszPath[2]))
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| 79 | {
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| 80 | /* Find the end of the server name. */
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| 81 | const char *pszEnd = pszPath + 2;
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| 82 | pszEnd += 2;
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| 83 | while ( *pszEnd != '\0'
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| 84 | && !RTPATH_IS_SLASH(*pszEnd))
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| 85 | pszEnd++;
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| 86 | if (RTPATH_IS_SLASH(*pszEnd))
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| 87 | {
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| 88 | pszEnd++;
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| 89 | while (RTPATH_IS_SLASH(*pszEnd))
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| 90 | pszEnd++;
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| 91 |
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| 92 | /* Find the end of the share name */
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| 93 | while ( *pszEnd != '\0'
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| 94 | && !RTPATH_IS_SLASH(*pszEnd))
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| 95 | pszEnd++;
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| 96 | if (RTPATH_IS_SLASH(*pszEnd))
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| 97 | pszEnd++;
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| 98 | return pszPath - pszEnd;
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| 99 | }
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| 100 | }
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| 101 | #endif
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| 102 | return 1;
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| 103 | }
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| 104 |
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| 105 | #if defined (RT_OS_OS2) || defined (RT_OS_WINDOWS)
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| 106 | /* Drive specifier? */
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| 107 | if ( pszPath[0] != '\0'
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| 108 | && pszPath[1] == ':'
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| 109 | && RT_C_IS_ALPHA(pszPath[0]))
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| 110 | {
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| 111 | if (RTPATH_IS_SLASH(pszPath[2]))
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| 112 | return 3;
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| 113 | return 2;
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| 114 | }
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| 115 | #endif
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| 116 | return 0;
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| 117 | }
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| 118 |
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| 119 |
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| 120 | RTDECL(int) RTPathAppendEx(char *pszPath, size_t cbPathDst, const char *pszAppend, size_t cchAppendMax, uint32_t fFlags)
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| 121 | {
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| 122 | char *pszPathEnd = RTStrEnd(pszPath, cbPathDst);
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| 123 | AssertReturn(pszPathEnd, VERR_INVALID_PARAMETER);
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| 124 | Assert(RTPATH_STR_F_IS_VALID(fFlags, 0));
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| 125 |
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| 126 | /*
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| 127 | * Special cases.
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| 128 | */
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| 129 | if (!pszAppend)
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| 130 | return VINF_SUCCESS;
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| 131 | size_t cchAppend = RTStrNLen(pszAppend, cchAppendMax);
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| 132 | if (!cchAppend)
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| 133 | return VINF_SUCCESS;
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| 134 | if (pszPathEnd == pszPath)
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| 135 | {
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| 136 | if (cchAppend >= cbPathDst)
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| 137 | return VERR_BUFFER_OVERFLOW;
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| 138 | memcpy(pszPath, pszAppend, cchAppend);
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| 139 | pszPath[cchAppend] = '\0';
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| 140 | return VINF_SUCCESS;
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| 141 | }
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| 142 |
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| 143 | /*
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| 144 | * Go to path style specific code now.
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| 145 | */
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| 146 | switch (fFlags & RTPATH_STR_F_STYLE_MASK)
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| 147 | {
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| 148 | #if RTPATH_STYLE == RTPATH_STR_F_STYLE_DOS
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| 149 | case RTPATH_STR_F_STYLE_HOST:
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| 150 | #endif
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| 151 | case RTPATH_STR_F_STYLE_DOS:
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| 152 | return rtPathAppendExStyleDos(pszPath, cbPathDst, pszPathEnd, pszAppend, cchAppend);
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| 153 |
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| 154 | #if RTPATH_STYLE != RTPATH_STR_F_STYLE_DOS
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| 155 | case RTPATH_STR_F_STYLE_HOST:
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| 156 | #endif
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| 157 | case RTPATH_STR_F_STYLE_UNIX:
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| 158 | return rtPathAppendExStyleUnix(pszPath, cbPathDst, pszPathEnd, pszAppend, cchAppend);
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| 159 |
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| 160 | default:
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| 161 | AssertFailedReturn(VERR_INVALID_FLAGS); /* impossible */
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| 162 | }
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| 163 | }
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| 164 |
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