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/* $Id$ */
/** @file
* IPRT - C++ REST, RTCRestOutputToString implementation.
*/
/*
* Copyright (C) 2018-2022 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_REST
#include <iprt/cpp/restoutput.h>
#include <iprt/errcore.h>
#include <iprt/string.h>
RTCRestOutputToString::RTCRestOutputToString(RTCString *a_pDst, bool a_fAppend /*= false*/) RT_NOEXCEPT
: RTCRestOutputBase()
, m_pDst(a_pDst)
, m_fOutOfMemory(false)
{
if (!a_fAppend)
m_pDst->setNull();
}
RTCRestOutputToString::~RTCRestOutputToString()
{
/* We don't own the string, so we don't delete it! */
m_pDst = NULL;
}
size_t RTCRestOutputToString::output(const char *a_pchString, size_t a_cchToWrite) RT_NOEXCEPT
{
if (a_cchToWrite)
{
RTCString *pDst = m_pDst;
if (pDst && !m_fOutOfMemory)
{
/*
* Make sure we've got sufficient space available before we append.
*/
size_t cchCurrent = pDst->length();
size_t cbCapacity = pDst->capacity();
size_t cbNeeded = cchCurrent + a_cchToWrite + 1;
if (cbNeeded <= cbCapacity)
{ /* likely */ }
else
{
/* Grow it. */
if (cbNeeded < _16M)
{
if (cbCapacity <= _1K)
cbCapacity = _1K;
else
cbCapacity = RT_ALIGN_Z(cbCapacity, _1K);
while (cbCapacity < cbNeeded)
cbCapacity <<= 1;
}
else
{
cbCapacity = RT_ALIGN_Z(cbCapacity, _2M);
while (cbCapacity < cbNeeded)
cbCapacity += _2M;
}
int rc = pDst->reserveNoThrow(cbCapacity);
if (RT_SUCCESS(rc))
{
rc = pDst->reserveNoThrow(cbNeeded);
if (RT_FAILURE(rc))
{
m_fOutOfMemory = true;
return a_cchToWrite;
}
}
}
/*
* Do the appending.
*/
pDst->append(a_pchString, a_cchToWrite);
}
}
return a_cchToWrite;
}
RTCString *RTCRestOutputToString::finalize() RT_NOEXCEPT
{
RTCString *pRet;
if (!m_fOutOfMemory)
pRet = m_pDst;
else
pRet = NULL;
m_pDst = NULL;
return pRet;
}
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