1 files changed, 120 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/rest/RTCRestOutputToString.cpp b/src/VBox/Runtime/common/rest/RTCRestOutputToString.cpp
new file mode 100644
index 00000000..6cb4b365
--- /dev/null
+++ b/src/VBox/Runtime/common/rest/RTCRestOutputToString.cpp
@@ -0,0 +1,120 @@
+/* $Id: RTCRestOutputToString.cpp $ */
+/** @file
+ * IPRT - C++ REST, RTCRestOutputToString implementation.
+ */
+
+/*
+ * Copyright (C) 2018-2019 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                                                                                                                 *
+*********************************************************************************************************************************/
+#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;
+}
+