Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 210 insertions, 0 deletions

diff --git a/bridges/source/cpp_uno/shared/bridge.cxx b/bridges/source/cpp_uno/shared/bridge.cxx
new file mode 100644
index 000000000..3753341cc
--- /dev/null
+++ b/bridges/source/cpp_uno/shared/bridge.cxx
@@ -0,0 +1,210 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#include <bridge.hxx>
+
+#include <cppinterfaceproxy.hxx>
+#include <unointerfaceproxy.hxx>
+
+#include <com/sun/star/uno/XInterface.hpp>
+#include <rtl/ustring.h>
+#include <sal/types.h>
+#include <typelib/typedescription.h>
+#include <uno/dispatcher.h>
+#include <uno/environment.h>
+#include <uno/mapping.h>
+
+namespace bridges::cpp_uno::shared {
+
+void freeMapping(uno_Mapping * pMapping)
+{
+    delete static_cast< Bridge::Mapping * >( pMapping )->pBridge;
+}
+
+void acquireMapping(uno_Mapping * pMapping)
+{
+    static_cast< Bridge::Mapping * >( pMapping )->pBridge->acquire();
+}
+
+void releaseMapping(uno_Mapping * pMapping)
+{
+    static_cast< Bridge::Mapping * >( pMapping )->pBridge->release();
+}
+
+void cpp2unoMapping(
+    uno_Mapping * pMapping, void ** ppUnoI, void * pCppI,
+    typelib_InterfaceTypeDescription * pTypeDescr)
+{
+    assert(ppUnoI && pTypeDescr);
+    if (*ppUnoI)
+    {
+        (*static_cast< uno_Interface * >( *ppUnoI )->release)(
+            static_cast< uno_Interface * >( *ppUnoI ) );
+        *ppUnoI = nullptr;
+    }
+    if (!pCppI)
+        return;
+
+    Bridge * pBridge = static_cast< Bridge::Mapping * >( pMapping )->pBridge;
+
+    // get object id of interface to be wrapped
+    rtl_uString * pOId = nullptr;
+    (*pBridge->pCppEnv->getObjectIdentifier)(
+        pBridge->pCppEnv, &pOId, pCppI );
+    assert(pOId);
+
+    // try to get any known interface from target environment
+    (*pBridge->pUnoEnv->getRegisteredInterface)(
+        pBridge->pUnoEnv, ppUnoI, pOId, pTypeDescr );
+
+    if (! *ppUnoI) // no existing interface, register new proxy interface
+    {
+        // try to publish a new proxy (refcount initially 1)
+        uno_Interface * pSurrogate
+            = bridges::cpp_uno::shared::UnoInterfaceProxy::create(
+                pBridge,
+                static_cast< ::com::sun::star::uno::XInterface * >( pCppI ),
+                pTypeDescr, pOId );
+
+        // proxy may be exchanged during registration
+        (*pBridge->pUnoEnv->registerProxyInterface)(
+            pBridge->pUnoEnv, reinterpret_cast< void ** >( &pSurrogate ),
+            freeUnoInterfaceProxy, pOId,
+            pTypeDescr );
+
+        *ppUnoI = pSurrogate;
+    }
+    ::rtl_uString_release( pOId );
+}
+
+void uno2cppMapping(
+    uno_Mapping * pMapping, void ** ppCppI, void * pUnoI,
+    typelib_InterfaceTypeDescription * pTypeDescr)
+{
+    assert(ppCppI && pTypeDescr);
+    if (*ppCppI)
+    {
+        static_cast< ::com::sun::star::uno::XInterface * >( *ppCppI )->
+            release();
+        *ppCppI = nullptr;
+    }
+    if (!pUnoI)
+        return;
+
+    Bridge * pBridge = static_cast< Bridge::Mapping * >( pMapping )->pBridge;
+
+    // get object id of uno interface to be wrapped
+    rtl_uString * pOId = nullptr;
+    (*pBridge->pUnoEnv->getObjectIdentifier)(
+        pBridge->pUnoEnv, &pOId, pUnoI );
+    assert(pOId);
+
+    // try to get any known interface from target environment
+    (*pBridge->pCppEnv->getRegisteredInterface)(
+        pBridge->pCppEnv, ppCppI, pOId, pTypeDescr );
+
+    if (! *ppCppI) // no existing interface, register new proxy interface
+    {
+        // try to publish a new proxy (ref count initially 1)
+        com::sun::star::uno::XInterface * pProxy
+            = bridges::cpp_uno::shared::CppInterfaceProxy::create(
+                pBridge, static_cast< uno_Interface * >( pUnoI ),
+                pTypeDescr, pOId );
+
+        // proxy may be exchanged during registration
+        (*pBridge->pCppEnv->registerProxyInterface)(
+            pBridge->pCppEnv, reinterpret_cast< void ** >( &pProxy ),
+            freeCppInterfaceProxy, pOId,
+            pTypeDescr );
+
+        *ppCppI = pProxy;
+    }
+    ::rtl_uString_release( pOId );
+}
+
+uno_Mapping * Bridge::createMapping(
+    uno_ExtEnvironment * pCppEnv, uno_ExtEnvironment * pUnoEnv,
+    bool bExportCpp2Uno)
+{
+    Bridge * bridge = new Bridge(pCppEnv, pUnoEnv, bExportCpp2Uno);
+    // coverity[leaked_storage] - on purpose
+    return bExportCpp2Uno ? &bridge->aCpp2Uno : &bridge->aUno2Cpp;
+}
+
+void Bridge::acquire()
+{
+    if (++nRef != 1)
+        return;
+
+    if (bExportCpp2Uno)
+    {
+        uno_Mapping * pMapping = &aCpp2Uno;
+        ::uno_registerMapping(
+            &pMapping, freeMapping, &pCppEnv->aBase,
+            &pUnoEnv->aBase, nullptr );
+    }
+    else
+    {
+        uno_Mapping * pMapping = &aUno2Cpp;
+        ::uno_registerMapping(
+            &pMapping, freeMapping, &pUnoEnv->aBase,
+            &pCppEnv->aBase, nullptr );
+    }
+}
+
+void Bridge::release()
+{
+    if (! --nRef )
+    {
+        ::uno_revokeMapping( bExportCpp2Uno ? &aCpp2Uno : &aUno2Cpp );
+    }
+}
+
+Bridge::Bridge(
+    uno_ExtEnvironment * pCppEnv_, uno_ExtEnvironment * pUnoEnv_,
+    bool bExportCpp2Uno_)
+    : nRef( 1 )
+    , pCppEnv( pCppEnv_ )
+    , pUnoEnv( pUnoEnv_ )
+    , bExportCpp2Uno( bExportCpp2Uno_ )
+{
+    aCpp2Uno.pBridge = this;
+    aCpp2Uno.acquire = acquireMapping;
+    aCpp2Uno.release = releaseMapping;
+    aCpp2Uno.mapInterface = cpp2unoMapping;
+
+    aUno2Cpp.pBridge = this;
+    aUno2Cpp.acquire = acquireMapping;
+    aUno2Cpp.release = releaseMapping;
+    aUno2Cpp.mapInterface = uno2cppMapping;
+
+    (*pCppEnv->aBase.acquire)( &pCppEnv->aBase );
+    (*pUnoEnv->aBase.acquire)( &pUnoEnv->aBase );
+}
+
+Bridge::~Bridge()
+{
+    (*pUnoEnv->aBase.release)( &pUnoEnv->aBase );
+    (*pCppEnv->aBase.release)( &pCppEnv->aBase );
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */