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/* $Id: RTPathAbsExDup.cpp $ */
/** @file
* IPRT - RTPathAbsExDup
*/
/*
* Copyright (C) 2006-2020 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 *
*********************************************************************************************************************************/
#include "internal/iprt.h"
#include <iprt/path.h>
#include <iprt/errcore.h>
#include <iprt/param.h>
#include <iprt/string.h>
RTDECL(char *) RTPathAbsExDup(const char *pszBase, const char *pszPath, uint32_t fFlags)
{
unsigned cTries = 16;
size_t cbAbsPath = RTPATH_MAX / 2;
for (;;)
{
char *pszAbsPath = RTStrAlloc(cbAbsPath);
if (pszAbsPath)
{
size_t cbActual = cbAbsPath;
int rc = RTPathAbsEx(pszBase, pszPath, fFlags, pszAbsPath, &cbActual);
if (RT_SUCCESS(rc))
{
if (cbActual < cbAbsPath / 2)
RTStrRealloc(&pszAbsPath, cbActual + 1);
return pszAbsPath;
}
RTStrFree(pszAbsPath);
if (rc != VERR_BUFFER_OVERFLOW)
break;
if (--cTries == 0)
break;
cbAbsPath = RT_MAX(RT_ALIGN_Z(cbActual + 16, 64), cbAbsPath + 256);
}
else
break;
}
return NULL;
}
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