diff options
Diffstat (limited to 'src/VBox/Runtime/common/rest/RTCRestOutputPrettyToString.cpp')
| -rw-r--r-- | src/VBox/Runtime/common/rest/RTCRestOutputPrettyToString.cpp | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/rest/RTCRestOutputPrettyToString.cpp b/src/VBox/Runtime/common/rest/RTCRestOutputPrettyToString.cpp new file mode 100644 index 00000000..a130d333 --- /dev/null +++ b/src/VBox/Runtime/common/rest/RTCRestOutputPrettyToString.cpp @@ -0,0 +1,120 @@ +/* $Id: RTCRestOutputPrettyToString.cpp $ */ +/** @file + * IPRT - C++ REST, RTCRestOutputPrettyToString implementation. + */ + +/* + * Copyright (C) 2018-2020 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 * +*********************************************************************************************************************************/ +#define LOG_GROUP RTLOGGROUP_REST +#include <iprt/cpp/restoutput.h> + +#include <iprt/errcore.h> +#include <iprt/string.h> + + +RTCRestOutputPrettyToString::RTCRestOutputPrettyToString(RTCString *a_pDst, bool a_fAppend /*= false*/) RT_NOEXCEPT + : RTCRestOutputPrettyBase() + , m_pDst(a_pDst) + , m_fOutOfMemory(false) +{ + if (!a_fAppend) + m_pDst->setNull(); +} + + +RTCRestOutputPrettyToString::~RTCRestOutputPrettyToString() +{ + /* We don't own the string, so we don't delete it! */ + m_pDst = NULL; +} + + +size_t RTCRestOutputPrettyToString::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 *RTCRestOutputPrettyToString::finalize() RT_NOEXCEPT +{ + RTCString *pRet; + if (!m_fOutOfMemory) + pRet = m_pDst; + else + pRet = NULL; + m_pDst = NULL; + return pRet; +} + |