From 940b4d1848e8c70ab7642901a68594e8016caffc Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 18:51:28 +0200 Subject: Adding upstream version 1:7.0.4. Signed-off-by: Daniel Baumann --- cppu/source/uno/cascade_mapping.cxx | 307 ++++++++++++++++++++++++++++++++++++ 1 file changed, 307 insertions(+) create mode 100644 cppu/source/uno/cascade_mapping.cxx (limited to 'cppu/source/uno/cascade_mapping.cxx') diff --git a/cppu/source/uno/cascade_mapping.cxx b/cppu/source/uno/cascade_mapping.cxx new file mode 100644 index 000000000..f57f7dc0a --- /dev/null +++ b/cppu/source/uno/cascade_mapping.cxx @@ -0,0 +1,307 @@ +/* -*- 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 +#include +#include +#include +#include +#include + +#include + +#include "cascade_mapping.hxx" + +using namespace com::sun::star; + +namespace { + +class MediatorMapping : public uno_Mapping +{ + oslInterlockedCount m_refCount; + + uno::Mapping m_from2uno; + uno::Mapping m_uno2to; + + uno::Environment m_from; + uno::Environment m_interm; + uno::Environment m_to; + +public: + void acquire(); + void release(); + + void mapInterface(void ** ppOut, + void * pInterface, + typelib_InterfaceTypeDescription * pInterfaceTypeDescr); + MediatorMapping(uno_Environment * pFrom, + uno_Environment * pInterm, + uno_Environment * pTo); +}; + +} + +extern "C" { +static void s_acquire(uno_Mapping * mapping) +{ + MediatorMapping * pMediatorMapping = static_cast(mapping); + pMediatorMapping->acquire(); +} + +static void s_release(uno_Mapping * mapping) +{ + MediatorMapping * pMediatorMapping = static_cast(mapping); + pMediatorMapping->release(); +} + +static void s_mapInterface( + uno_Mapping * mapping, + void ** ppOut, + void * pInterface, + typelib_InterfaceTypeDescription * pInterfaceTypeDescr) +{ + MediatorMapping * pMediatorMapping = static_cast(mapping); + pMediatorMapping->mapInterface(ppOut, pInterface, pInterfaceTypeDescr); +} +} + +MediatorMapping::MediatorMapping(uno_Environment * pFrom, + uno_Environment * pInterm, + uno_Environment * pTo) + : m_refCount(0), + m_from2uno(pFrom, pInterm), + m_uno2to (pInterm, pTo), + m_from (pFrom), + m_interm (pInterm), + m_to (pTo) +{ + if (!m_from2uno.get() || !m_uno2to.get()) + abort(); + + uno_Mapping::acquire = s_acquire; + uno_Mapping::release = s_release; + uno_Mapping::mapInterface = s_mapInterface; +} + +void MediatorMapping::acquire() +{ + osl_atomic_increment(&m_refCount); +} + +void MediatorMapping::release() +{ + if (osl_atomic_decrement(&m_refCount) == 0) + { + ::uno_revokeMapping(this); + } +} + +extern "C" { static void s_mapInterface_v(va_list * pParam) +{ + void ** ppOut = va_arg(*pParam, void **); + void * pInterface = va_arg(*pParam, void *); + typelib_InterfaceTypeDescription * pInterfaceTypeDescr = va_arg(*pParam, typelib_InterfaceTypeDescription *); + uno_Mapping * pMapping = va_arg(*pParam, uno_Mapping *); + + pMapping->mapInterface(pMapping, ppOut, pInterface, pInterfaceTypeDescr); +}} + +void MediatorMapping::mapInterface( + void ** ppOut, + void * pInterface, + typelib_InterfaceTypeDescription * pInterfaceTypeDescr) +{ + if (*ppOut != nullptr) + { + uno_ExtEnvironment * env = m_to.get()->pExtEnv; + OSL_ASSERT( env != nullptr ); + env->releaseInterface( env, *ppOut ); + *ppOut = nullptr; + } + + void * ret = nullptr; + uno_Interface * pUnoI = nullptr; + + m_from.invoke(s_mapInterface_v, &pUnoI, pInterface, pInterfaceTypeDescr, m_from2uno.get()); + + m_uno2to.mapInterface(&ret, pUnoI, pInterfaceTypeDescr); + + if (pUnoI) + m_interm.get()->pExtEnv->releaseInterface(m_interm.get()->pExtEnv, pUnoI); + + *ppOut = ret; +} + +extern "C" { static void s_MediatorMapping_free(uno_Mapping * pMapping) + SAL_THROW_EXTERN_C() +{ + delete static_cast(pMapping); +}} + + +static OUString getPrefix(OUString const & str1, OUString const & str2) +{ + sal_Int32 nIndex1 = 0; + sal_Int32 nIndex2 = 0; + sal_Int32 sim = 0; + + OUString token1; + OUString token2; + + do + { + token1 = str1.getToken(0, ':', nIndex1); + token2 = str2.getToken(0, ':', nIndex2); + + if (token1 == token2) + sim += token1.getLength() + 1; + } + while(nIndex1 == nIndex2 && nIndex1 >= 0 && token1 == token2); + + OUString result; + + if (sim) + result = str1.copy(0, sim - 1); + + return result; +} + +// OUString str1("abc:def:ghi"); +// OUString str2("abc:def"); +// OUString str3("abc"); +// OUString str4(""); + +// OUString pref; + +// pref = getPrefix(str1, str1); +// pref = getPrefix(str1, str2); +// pref = getPrefix(str1, str3); +// pref = getPrefix(str1, str4); + +// pref = getPrefix(str2, str1); +// pref = getPrefix(str3, str1); +// pref = getPrefix(str4, str1); + + +void getCascadeMapping(uno_Mapping ** ppMapping, + uno_Environment * pFrom, + uno_Environment * pTo, + rtl_uString * pAddPurpose) +{ + if (pAddPurpose && pAddPurpose->length) + return; + + OUString uno_envType(UNO_LB_UNO); + + OUString from_envType = cppu::EnvDcp::getTypeName(pFrom->pTypeName); + OUString to_envType = cppu::EnvDcp::getTypeName(pTo->pTypeName); + OUString from_envPurpose = cppu::EnvDcp::getPurpose(pFrom->pTypeName); + OUString to_envPurpose = cppu::EnvDcp::getPurpose(pTo->pTypeName); + +#ifdef LOG_CALLING_named_purpose_getMapping + OString s_from_name = OUStringToOString(pFrom->pTypeName, RTL_TEXTENCODING_ASCII_US); + OString s_to_name = OUStringToOString(pTo->pTypeName, RTL_TEXTENCODING_ASCII_US); + + std::cerr << __FUNCTION__ << " - creating mediation "; + std::cerr << "pFrom: " << s_from_name.getStr(); + std::cerr <<" pTo: " << s_to_name.getStr() << std::endl; +#endif + + if (from_envPurpose == to_envPurpose) // gcc:bla => uno:bla + return; + + // reaching this point means, we need a mediated mapping!!! + // we generally mediate via uno[:free] + uno_Environment * pInterm = nullptr; + + // chained uno -> uno + if (from_envType == uno_envType && to_envType == uno_envType) + { + OUString purpose = getPrefix(from_envPurpose, to_envPurpose); + + OUString uno_envDcp = uno_envType + purpose; + + // direct mapping possible? + // uno:bla-->uno:bla:blubb + if (from_envPurpose == purpose) + { + OUString rest = to_envPurpose.copy(purpose.getLength()); + + sal_Int32 index = rest.indexOf(':', 1); + if (index == -1) + { + uno_getMapping(ppMapping, pFrom, pTo, rest.copy(1).pData); + return; + } + + uno_envDcp += rest.copy(0, index); + } + else if (to_envPurpose == purpose) + { + OUString rest = from_envPurpose.copy(purpose.getLength()); + + sal_Int32 index = rest.indexOf(':', 1); + if (index == -1) + { + uno_getMapping(ppMapping, pFrom, pTo, rest.copy(1).pData); + return; + } + + uno_envDcp += rest.copy(0, index); + } + + uno_getEnvironment(&pInterm, uno_envDcp.pData, nullptr); + } + else if (from_envType != uno_envType && to_envType == uno_envType) // -> UNO ? + // mediate via uno:purpose(fromEnv) + { + OUString envDcp = uno_envType + from_envPurpose; + uno_getEnvironment(&pInterm, envDcp.pData, nullptr); + } + else if (from_envType == uno_envType && to_envType != uno_envType) // UNO -> ? + // mediate via uno(context) + { + OUString envDcp = uno_envType + to_envPurpose; + uno_getEnvironment(&pInterm, envDcp.pData, nullptr); + } + else // everything else + // mediate via uno:purpose + { + OUString purpose = getPrefix(from_envPurpose, to_envPurpose); + + OUString uno_envDcp = uno_envType + purpose; + + uno_getEnvironment(&pInterm, uno_envDcp.pData, nullptr); + } + + uno_Mapping * pMapping = new MediatorMapping(pFrom, pInterm, pTo); + pInterm->release(pInterm); + + + pMapping->acquire(pMapping); + + ::uno_registerMapping(&pMapping, s_MediatorMapping_free, pFrom, pTo, pAddPurpose); + + if (*ppMapping) + (*ppMapping)->release(*ppMapping); + + *ppMapping = pMapping; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ -- cgit v1.2.3