/* $Id$ */
/** @file
* IPRT - RTDirCreateUniqueNumbered, generic implementation.
*/
/*
* Copyright (C) 2011 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* 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 *
*******************************************************************************/
RTDECL(int) RTDirCreateUniqueNumbered(char *pszPath, size_t cbSize, RTFMODE fMode, signed int cchDigits, char chSep)
{
/*
* Validate input.
*/
/* Check that there is sufficient space. */
AssertReturn(cbSize - 1 - (pszEnd - pszPath) >= (size_t)cchDigits + (chSep ? 1 : 0), VERR_BUFFER_OVERFLOW);
/* First try is to create the path without any numbers. */
if ( RT_SUCCESS(rc)
|| rc != VERR_ALREADY_EXISTS)
return rc;
/* If the separator value isn't zero, add it. */
if (chSep != '\0')
{
cbLeft--;
*pszEnd = '\0';
}
/* How many tries? Stay within somewhat sane limits. */
if (cchDigits >= 8)
else
{
cMaxTries = 10;
for (int a = 0; a < cchDigits - 1; ++a)
cMaxTries *= 10;
}
/* Try cMaxTries - 1 times to create a directory with appended numbers. */
uint32_t i = 1;
while (i < cMaxTries)
{
/* Format the number with leading zero's. */
if (RT_FAILURE((int) rc2))
{
*pszPath = '\0';
return (int)rc2;
}
if (RT_SUCCESS(rc))
return rc;
++i;
}
/* We've given up. */
*pszPath = '\0';
return VERR_ALREADY_EXISTS;
}