| 1 | /* $Id: rtPathRootSpecLen.cpp 62477 2016-07-22 18:27:37Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - rtPathRootSpecLen (internal).
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2010-2016 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 |
|
|---|
| 28 | /*********************************************************************************************************************************
|
|---|
| 29 | * Header Files *
|
|---|
| 30 | *********************************************************************************************************************************/
|
|---|
| 31 | #include "internal/iprt.h"
|
|---|
| 32 | #include <iprt/path.h>
|
|---|
| 33 |
|
|---|
| 34 | #include <iprt/assert.h>
|
|---|
| 35 | #include <iprt/ctype.h>
|
|---|
| 36 | #include "internal/path.h"
|
|---|
| 37 |
|
|---|
| 38 | /**
|
|---|
| 39 | * Figures out the length of the root (or drive) specifier in @a pszPath.
|
|---|
| 40 | *
|
|---|
| 41 | * For UNC names, we consider the root specifier to include both the server and
|
|---|
| 42 | * share names.
|
|---|
| 43 | *
|
|---|
| 44 | * @returns The length including all slashes. 0 if relative path.
|
|---|
| 45 | *
|
|---|
| 46 | * @param pszPath The path to examine.
|
|---|
| 47 | */
|
|---|
| 48 | DECLHIDDEN(size_t) rtPathRootSpecLen(const char *pszPath)
|
|---|
| 49 | {
|
|---|
| 50 | /*
|
|---|
| 51 | * If it's an absolute path, threat the root or volume specification as
|
|---|
| 52 | * component 0. UNC is making this extra fun on OS/2 and Windows as usual.
|
|---|
| 53 | */
|
|---|
| 54 | size_t off = 0;
|
|---|
| 55 | if (RTPATH_IS_SLASH(pszPath[0]))
|
|---|
| 56 | {
|
|---|
| 57 | #if defined(RT_OS_OS2) || defined(RT_OS_WINDOWS)
|
|---|
| 58 | if ( RTPATH_IS_SLASH(pszPath[1])
|
|---|
| 59 | && !RTPATH_IS_SLASH(pszPath[2])
|
|---|
| 60 | && pszPath[2])
|
|---|
| 61 | {
|
|---|
| 62 | /* UNC server name */
|
|---|
| 63 | off = 2;
|
|---|
| 64 | while (!RTPATH_IS_SLASH(pszPath[off]) && pszPath[off])
|
|---|
| 65 | off++;
|
|---|
| 66 | while (RTPATH_IS_SLASH(pszPath[off]))
|
|---|
| 67 | off++;
|
|---|
| 68 |
|
|---|
| 69 | /* UNC share */
|
|---|
| 70 | while (!RTPATH_IS_SLASH(pszPath[off]) && pszPath[off])
|
|---|
| 71 | off++;
|
|---|
| 72 | }
|
|---|
| 73 | else
|
|---|
| 74 | #endif
|
|---|
| 75 | {
|
|---|
| 76 | off = 1;
|
|---|
| 77 | }
|
|---|
| 78 | while (RTPATH_IS_SLASH(pszPath[off]))
|
|---|
| 79 | off++;
|
|---|
| 80 | }
|
|---|
| 81 | #if defined(RT_OS_OS2) || defined(RT_OS_WINDOWS)
|
|---|
| 82 | else if (RT_C_IS_ALPHA(pszPath[0]) && pszPath[1] == ':')
|
|---|
| 83 | {
|
|---|
| 84 | off = 2;
|
|---|
| 85 | while (RTPATH_IS_SLASH(pszPath[off]))
|
|---|
| 86 | off++;
|
|---|
| 87 | }
|
|---|
| 88 | #endif
|
|---|
| 89 | Assert(!RTPATH_IS_SLASH(pszPath[off]));
|
|---|
| 90 |
|
|---|
| 91 | return off;
|
|---|
| 92 | }
|
|---|
| 93 |
|
|---|
