VirtualBox

source: vbox/trunk/src/VBox/Runtime/generic/RTPathGetCurrentDrive-generic.cpp@ 99286

Last change on this file since 99286 was 98103, checked in by vboxsync, 2 years ago

Copyright year updates by scm.

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1/* $Id: RTPathGetCurrentDrive-generic.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2/** @file
3 * IPRT - RTPathGetCurrentDrive, generic implementation.
4 */
5
6/*
7 * Copyright (C) 2014-2023 Oracle and/or its affiliates.
8 *
9 * This file is part of VirtualBox base platform packages, as
10 * available from https://www.virtualbox.org.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation, in version 3 of the
15 * License.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <https://www.gnu.org/licenses>.
24 *
25 * The contents of this file may alternatively be used under the terms
26 * of the Common Development and Distribution License Version 1.0
27 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28 * in the VirtualBox distribution, in which case the provisions of the
29 * CDDL are applicable instead of those of the GPL.
30 *
31 * You may elect to license modified versions of this file under the
32 * terms and conditions of either the GPL or the CDDL or both.
33 *
34 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35 */
36
37
38/*********************************************************************************************************************************
39* Header Files *
40*********************************************************************************************************************************/
41#define LOG_GROUP RTLOGGROUP_PATH
42#include <iprt/path.h>
43#include "internal/iprt.h"
44
45#include <iprt/ctype.h>
46#include <iprt/err.h>
47#include <iprt/mem.h>
48#include <iprt/string.h>
49#include "internal/path.h"
50
51
52RTDECL(int) RTPathGetCurrentDrive(char *pszPath, size_t cbPath)
53{
54#ifdef HAVE_DRIVE
55 /*
56 * Query the current directroy and extract the wanted information from it.
57 */
58 char *pszPathFree = NULL;
59 char *pszCwd = pszPath;
60 int rc = RTPathGetCurrent(pszCwd, cbPath);
61 if (RT_SUCCESS(rc))
62 { /* likely */ }
63 else if (rc != VERR_BUFFER_OVERFLOW)
64 return rc;
65 else
66 {
67 pszPathFree = pszCwd = (char *)RTMemTmpAlloc(RTPATH_BIG_MAX);
68 AssertReturn(pszPathFree, VERR_NO_TMP_MEMORY);
69 rc = RTPathGetCurrent(pszCwd, RTPATH_BIG_MAX);
70 }
71 if (RT_SUCCESS(rc))
72 {
73 /*
74 * Drive letter? Chop off at root slash.
75 */
76 if (pszCwd[0] && RTPATH_IS_VOLSEP(pszCwd[1]))
77 pszCwd[2] = '\0';
78 /*
79 * UNC? Chop off after share.
80 */
81 else if ( RTPATH_IS_SLASH(pszCwd[0])
82 && RTPATH_IS_SLASH(pszCwd[1])
83 && !RTPATH_IS_SLASH(pszCwd[2])
84 && pszCwd[2])
85 {
86 /* Work thru the server name. */
87 size_t off = 3;
88 while (!RTPATH_IS_SLASH(pszCwd[off]) && pszCwd[off])
89 off++;
90 size_t offServerSlash = off;
91
92 /* Is there a share name? */
93 if (RTPATH_IS_SLASH(pszCwd[off]))
94 {
95 while (RTPATH_IS_SLASH(pszCwd[off]))
96 off++;
97 if (pszCwd[off])
98 {
99 /* Work thru the share name. */
100 while (!RTPATH_IS_SLASH(pszCwd[off]) && pszCwd[off])
101 off++;
102 }
103 /* No share name, chop at server name. */
104 else
105 off = offServerSlash;
106 }
107 pszCwd[off] = '\0';
108 }
109 else
110 rc = VERR_INTERNAL_ERROR_4;
111 }
112 if (pszPathFree)
113 {
114 if (RT_SUCCESS(rc))
115 rc = RTStrCopy(pszPath, cbPath, pszCwd);
116 RTMemTmpFree(pszPathFree);
117 }
118 return rc;
119
120#else /* !HAVE_DRIVE */
121 /*
122 * No drive letters on this system, return empty string.
123 */
124 if (cbPath > 0)
125 {
126 *pszPath = '\0';
127 return VINF_SUCCESS;
128 }
129 return VERR_BUFFER_OVERFLOW;
130#endif /* !HAVE_DRIVE */
131}
132RT_EXPORT_SYMBOL(RTPathGetCurrentDrive);
133
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