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/* -*- 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 <osl/interlck.h>
#include <rtl/ustring.hxx>
#include <uno/environment.hxx>
#include <uno/lbnames.h>
#include <uno/mapping.hxx>
#include <uno/dispatcher.h>
#include <cppu/EnvDcp.hxx>
#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<MediatorMapping *>(mapping);
pMediatorMapping->acquire();
}
static void s_release(uno_Mapping * mapping)
{
MediatorMapping * pMediatorMapping = static_cast<MediatorMapping *>(mapping);
pMediatorMapping->release();
}
static void s_mapInterface(
uno_Mapping * mapping,
void ** ppOut,
void * pInterface,
typelib_InterfaceTypeDescription * pInterfaceTypeDescr)
{
MediatorMapping * pMediatorMapping = static_cast<MediatorMapping *>(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<MediatorMapping *>(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) // <ANY> -> 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 -> <ANY>?
// 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: */
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