| 1 | /* $Id: RTCRestOutputToString.cpp 76452 2018-12-25 01:41:25Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - C++ REST, RTCRestOutputToString implementation.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2018 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 |
|
|---|
| 28 | /*********************************************************************************************************************************
|
|---|
| 29 | * Header Files *
|
|---|
| 30 | *********************************************************************************************************************************/
|
|---|
| 31 | #define LOG_GROUP RTLOGGROUP_REST
|
|---|
| 32 | #include <iprt/cpp/restoutput.h>
|
|---|
| 33 |
|
|---|
| 34 | #include <iprt/errcore.h>
|
|---|
| 35 | #include <iprt/string.h>
|
|---|
| 36 |
|
|---|
| 37 |
|
|---|
| 38 | RTCRestOutputToString::RTCRestOutputToString(RTCString *a_pDst, bool a_fAppend /*= false*/) RT_NOEXCEPT
|
|---|
| 39 | : RTCRestOutputBase()
|
|---|
| 40 | , m_pDst(a_pDst)
|
|---|
| 41 | , m_fOutOfMemory(false)
|
|---|
| 42 | {
|
|---|
| 43 | if (!a_fAppend)
|
|---|
| 44 | m_pDst->setNull();
|
|---|
| 45 | }
|
|---|
| 46 |
|
|---|
| 47 |
|
|---|
| 48 | RTCRestOutputToString::~RTCRestOutputToString()
|
|---|
| 49 | {
|
|---|
| 50 | /* We don't own the string, so we don't delete it! */
|
|---|
| 51 | m_pDst = NULL;
|
|---|
| 52 | }
|
|---|
| 53 |
|
|---|
| 54 |
|
|---|
| 55 | size_t RTCRestOutputToString::output(const char *a_pchString, size_t a_cchToWrite) RT_NOEXCEPT
|
|---|
| 56 | {
|
|---|
| 57 | if (a_cchToWrite)
|
|---|
| 58 | {
|
|---|
| 59 | RTCString *pDst = m_pDst;
|
|---|
| 60 | if (pDst && !m_fOutOfMemory)
|
|---|
| 61 | {
|
|---|
| 62 | /*
|
|---|
| 63 | * Make sure we've got sufficient space available before we append.
|
|---|
| 64 | */
|
|---|
| 65 | size_t cchCurrent = pDst->length();
|
|---|
| 66 | size_t cbCapacity = pDst->capacity();
|
|---|
| 67 | size_t cbNeeded = cchCurrent + a_cchToWrite + 1;
|
|---|
| 68 | if (cbNeeded <= cbCapacity)
|
|---|
| 69 | { /* likely */ }
|
|---|
| 70 | else
|
|---|
| 71 | {
|
|---|
| 72 | /* Grow it. */
|
|---|
| 73 | if (cbNeeded < _16M)
|
|---|
| 74 | {
|
|---|
| 75 | if (cbCapacity <= _1K)
|
|---|
| 76 | cbCapacity = _1K;
|
|---|
| 77 | else
|
|---|
| 78 | cbCapacity = RT_ALIGN_Z(cbCapacity, _1K);
|
|---|
| 79 | while (cbCapacity < cbNeeded)
|
|---|
| 80 | cbCapacity <<= 1;
|
|---|
| 81 | }
|
|---|
| 82 | else
|
|---|
| 83 | {
|
|---|
| 84 | cbCapacity = RT_ALIGN_Z(cbCapacity, _2M);
|
|---|
| 85 | while (cbCapacity < cbNeeded)
|
|---|
| 86 | cbCapacity += _2M;
|
|---|
| 87 | }
|
|---|
| 88 | int rc = pDst->reserveNoThrow(cbCapacity);
|
|---|
| 89 | if (RT_SUCCESS(rc))
|
|---|
| 90 | {
|
|---|
| 91 | rc = pDst->reserveNoThrow(cbNeeded);
|
|---|
| 92 | if (RT_FAILURE(rc))
|
|---|
| 93 | {
|
|---|
| 94 | m_fOutOfMemory = true;
|
|---|
| 95 | return a_cchToWrite;
|
|---|
| 96 | }
|
|---|
| 97 | }
|
|---|
| 98 | }
|
|---|
| 99 |
|
|---|
| 100 | /*
|
|---|
| 101 | * Do the appending.
|
|---|
| 102 | */
|
|---|
| 103 | pDst->append(a_pchString, a_cchToWrite);
|
|---|
| 104 | }
|
|---|
| 105 | }
|
|---|
| 106 | return a_cchToWrite;
|
|---|
| 107 | }
|
|---|
| 108 |
|
|---|
| 109 |
|
|---|
| 110 | RTCString *RTCRestOutputToString::finalize() RT_NOEXCEPT
|
|---|
| 111 | {
|
|---|
| 112 | RTCString *pRet;
|
|---|
| 113 | if (!m_fOutOfMemory)
|
|---|
| 114 | pRet = m_pDst;
|
|---|
| 115 | else
|
|---|
| 116 | pRet = NULL;
|
|---|
| 117 | m_pDst = NULL;
|
|---|
| 118 | return pRet;
|
|---|
| 119 | }
|
|---|
| 120 |
|
|---|
