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/* $Id: RTPathCopyComponents.cpp $ */
/** @file
* IPRT - RTPathCountComponents
*/
/*
* Copyright (C) 2010-2019 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/assert.h>
#include <iprt/errcore.h>
#include <iprt/string.h>
#include "internal/path.h"
RTDECL(int) RTPathCopyComponents(char *pszDst, size_t cbDst, const char *pszSrc, size_t cComponents)
{
/*
* Quick input validation.
*/
AssertPtr(pszDst);
AssertPtr(pszSrc);
if (cbDst == 0)
return VERR_BUFFER_OVERFLOW;
/*
* Fend of the simple case where nothing is wanted.
*/
if (cComponents == 0)
{
*pszDst = '\0';
return VINF_SUCCESS;
}
/*
* Parse into the path until we've counted the desired number of objects
* or hit the end.
*/
size_t off = rtPathRootSpecLen(pszSrc);
size_t c = off != 0;
while (c < cComponents && pszSrc[off])
{
c++;
while (!RTPATH_IS_SLASH(pszSrc[off]) && pszSrc[off])
off++;
while (RTPATH_IS_SLASH(pszSrc[off]))
off++;
}
/*
* Copy up to but not including 'off'.
*/
if (off >= cbDst)
return VERR_BUFFER_OVERFLOW;
memcpy(pszDst, pszSrc, off);
pszDst[off] = '\0';
return VINF_SUCCESS;
}
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