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/* $Id: RTPathGetCurrentDrive-generic.cpp $ */
/** @file
* IPRT - RTPathGetCurrentDrive, generic implementation.
*/
/*
* Copyright (C) 2014-2020 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#define LOG_GROUP RTLOGGROUP_PATH
#include <iprt/path.h>
#include "internal/iprt.h"
#include <iprt/ctype.h>
#include <iprt/err.h>
#include <iprt/mem.h>
#include <iprt/string.h>
#include "internal/path.h"
RTDECL(int) RTPathGetCurrentDrive(char *pszPath, size_t cbPath)
{
#ifdef HAVE_DRIVE
/*
* Query the current directroy and extract the wanted information from it.
*/
char *pszPathFree = NULL;
char *pszCwd = pszPath;
int rc = RTPathGetCurrent(pszCwd, cbPath);
if (RT_SUCCESS(rc))
{ /* likely */ }
else if (rc != VERR_BUFFER_OVERFLOW)
return rc;
else
{
pszPathFree = pszCwd = (char *)RTMemTmpAlloc(RTPATH_BIG_MAX);
AssertReturn(pszPathFree, VERR_NO_TMP_MEMORY);
rc = RTPathGetCurrent(pszCwd, RTPATH_BIG_MAX);
}
if (RT_SUCCESS(rc))
{
/*
* Drive letter? Chop off at root slash.
*/
if (pszCwd[0] && RTPATH_IS_VOLSEP(pszCwd[1]))
pszCwd[2] = '\0';
/*
* UNC? Chop off after share.
*/
else if ( RTPATH_IS_SLASH(pszCwd[0])
&& RTPATH_IS_SLASH(pszCwd[1])
&& !RTPATH_IS_SLASH(pszCwd[2])
&& pszCwd[2])
{
/* Work thru the server name. */
size_t off = 3;
while (!RTPATH_IS_SLASH(pszCwd[off]) && pszCwd[off])
off++;
size_t offServerSlash = off;
/* Is there a share name? */
if (RTPATH_IS_SLASH(pszCwd[off]))
{
while (RTPATH_IS_SLASH(pszCwd[off]))
off++;
if (pszCwd[off])
{
/* Work thru the share name. */
while (!RTPATH_IS_SLASH(pszCwd[off]) && pszCwd[off])
off++;
}
/* No share name, chop at server name. */
else
off = offServerSlash;
}
pszCwd[off] = '\0';
}
else
rc = VERR_INTERNAL_ERROR_4;
}
if (pszPathFree)
{
if (RT_SUCCESS(rc))
rc = RTStrCopy(pszPath, cbPath, pszCwd);
RTMemTmpFree(pszPathFree);
}
return rc;
#else /* !HAVE_DRIVE */
/*
* No drive letters on this system, return empty string.
*/
if (cbPath > 0)
{
*pszPath = '\0';
return VINF_SUCCESS;
}
return VERR_BUFFER_OVERFLOW;
#endif /* !HAVE_DRIVE */
}
RT_EXPORT_SYMBOL(RTPathGetCurrentDrive);
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