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/* $Id: RTCRestOutputToString.cpp $ */
/** @file
* IPRT - C++ REST, RTCRestOutputToString implementation.
*/
/*
* Copyright (C) 2018-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* 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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