ad686b26ce
Change-Id: I6eb9f0431a9402479a2d90d5b6f68b611d52a9f9 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/175957 Tested-by: Jenkins Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
377 lines
9.8 KiB
C++
377 lines
9.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <uno/environment.hxx>
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#include <uno/lbnames.h>
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#include <cppu/EnvDcp.hxx>
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#include <cppu/Enterable.hxx>
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#include <osl/thread.h>
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#include <osl/thread.hxx>
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#include <o3tl/string_view.hxx>
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#include <mutex>
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#include <unordered_map>
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using namespace com::sun::star;
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namespace {
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struct oslThreadIdentifier_equal
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{
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bool operator()(oslThreadIdentifier s1, oslThreadIdentifier s2) const;
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};
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}
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bool oslThreadIdentifier_equal::operator()(oslThreadIdentifier s1, oslThreadIdentifier s2) const
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{
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bool result = s1 == s2;
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return result;
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}
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namespace {
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struct oslThreadIdentifier_hash
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{
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size_t operator()(oslThreadIdentifier s1) const;
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};
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}
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size_t oslThreadIdentifier_hash::operator()(oslThreadIdentifier s1) const
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{
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return s1;
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}
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typedef std::unordered_map<oslThreadIdentifier,
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uno_Environment *,
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oslThreadIdentifier_hash,
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oslThreadIdentifier_equal> ThreadMap;
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namespace
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{
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std::mutex s_threadMap_mutex;
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ThreadMap s_threadMap;
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}
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static void s_setCurrent(uno_Environment * pEnv)
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{
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oslThreadIdentifier threadId = osl::Thread::getCurrentIdentifier();
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std::scoped_lock guard(s_threadMap_mutex);
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if (pEnv)
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{
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s_threadMap[threadId] = pEnv;
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}
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else
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{
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ThreadMap::iterator iEnv = s_threadMap.find(threadId);
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if( iEnv != s_threadMap.end())
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s_threadMap.erase(iEnv);
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}
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}
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static uno_Environment * s_getCurrent()
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{
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uno_Environment * pEnv = nullptr;
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oslThreadIdentifier threadId = osl::Thread::getCurrentIdentifier();
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std::scoped_lock guard(s_threadMap_mutex);
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ThreadMap::iterator iEnv = s_threadMap.find(threadId);
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if(iEnv != s_threadMap.end())
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pEnv = iEnv->second;
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return pEnv;
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}
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extern "C" void SAL_CALL uno_getCurrentEnvironment(uno_Environment ** ppEnv, rtl_uString * pTypeName) noexcept
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{
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if (*ppEnv)
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{
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(*ppEnv)->release(*ppEnv);
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*ppEnv = nullptr;
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}
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OUString currPurpose;
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uno_Environment * pCurrEnv = s_getCurrent();
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if (pCurrEnv) // no environment means no purpose
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currPurpose = cppu::EnvDcp::getPurpose(pCurrEnv->pTypeName);
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if (pTypeName && rtl_uString_getLength(pTypeName))
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{
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OUString envDcp = OUString::unacquired(&pTypeName) + currPurpose;
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uno_getEnvironment(ppEnv, envDcp.pData, nullptr);
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}
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else
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{
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if (pCurrEnv)
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{
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*ppEnv = pCurrEnv;
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(*ppEnv)->acquire(*ppEnv);
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}
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else
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{
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OUString uno_envDcp(u"" UNO_LB_UNO ""_ustr);
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uno_getEnvironment(ppEnv, uno_envDcp.pData, nullptr);
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}
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}
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}
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static OUString s_getPrefix(std::u16string_view str1, std::u16string_view str2)
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{
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sal_Int32 nIndex1 = 0;
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sal_Int32 nIndex2 = 0;
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sal_Int32 sim = 0;
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std::u16string_view token1;
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std::u16string_view token2;
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do
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{
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token1 = o3tl::getToken(str1, 0, ':', nIndex1);
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token2 = o3tl::getToken(str2, 0, ':', nIndex2);
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if (token1 == token2)
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sim += token1.size() + 1;
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}
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while(nIndex1 == nIndex2 && nIndex1 >= 0 && token1 == token2);
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OUString result;
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if (sim)
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result = str1.substr(0, sim - 1);
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return result;
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}
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static int s_getNextEnv(uno_Environment ** ppEnv, uno_Environment * pCurrEnv, uno_Environment * pTargetEnv)
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{
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int res = 0;
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std::u16string_view nextPurpose;
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OUString currPurpose;
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if (pCurrEnv)
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currPurpose = cppu::EnvDcp::getPurpose(pCurrEnv->pTypeName);
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OUString targetPurpose;
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if (pTargetEnv)
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targetPurpose = cppu::EnvDcp::getPurpose(pTargetEnv->pTypeName);
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OUString intermPurpose(s_getPrefix(currPurpose, targetPurpose));
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if (currPurpose.getLength() > intermPurpose.getLength())
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{
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sal_Int32 idx = currPurpose.lastIndexOf(':');
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nextPurpose = currPurpose.subView(0, idx);
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res = -1;
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}
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else if (intermPurpose.getLength() < targetPurpose.getLength())
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{
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sal_Int32 idx = targetPurpose.indexOf(':', intermPurpose.getLength() + 1);
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if (idx == -1)
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nextPurpose = targetPurpose;
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else
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nextPurpose = targetPurpose.subView(0, idx);
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res = 1;
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}
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if (!nextPurpose.empty())
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{
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OUString next_envDcp = OUString::Concat(UNO_LB_UNO) + nextPurpose;
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uno_getEnvironment(ppEnv, next_envDcp.pData, nullptr);
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}
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else
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{
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if (*ppEnv)
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(*ppEnv)->release(*ppEnv);
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*ppEnv = nullptr;
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}
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return res;
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}
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extern "C" { static void s_pull(va_list * pParam)
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{
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uno_EnvCallee * pCallee = va_arg(*pParam, uno_EnvCallee *);
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va_list * pXparam = va_arg(*pParam, va_list *);
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pCallee(pXparam);
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}}
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static void s_callInto_v(uno_Environment * pEnv, uno_EnvCallee * pCallee, va_list * pParam)
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{
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cppu::Enterable * pEnterable = static_cast<cppu::Enterable *>(pEnv->pReserved);
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if (pEnterable)
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pEnterable->callInto(s_pull, pCallee, pParam);
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else
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pCallee(pParam);
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}
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static void s_callInto(uno_Environment * pEnv, uno_EnvCallee * pCallee, ...)
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{
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va_list param;
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va_start(param, pCallee);
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s_callInto_v(pEnv, pCallee, ¶m);
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va_end(param);
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}
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static void s_callOut_v(uno_Environment * pEnv, uno_EnvCallee * pCallee, va_list * pParam)
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{
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cppu::Enterable * pEnterable = static_cast<cppu::Enterable *>(pEnv->pReserved);
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if (pEnterable)
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pEnterable->callOut_v(pCallee, pParam);
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else
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pCallee(pParam);
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}
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static void s_callOut(uno_Environment * pEnv, uno_EnvCallee * pCallee, ...)
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{
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va_list param;
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va_start(param, pCallee);
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s_callOut_v(pEnv, pCallee, ¶m);
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va_end(param);
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}
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static void s_environment_invoke_v(uno_Environment *, uno_Environment *, uno_EnvCallee *, va_list *);
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extern "C" { static void s_environment_invoke_vv(va_list * pParam)
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{
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uno_Environment * pCurrEnv = va_arg(*pParam, uno_Environment *);
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uno_Environment * pTargetEnv = va_arg(*pParam, uno_Environment *);
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uno_EnvCallee * pCallee = va_arg(*pParam, uno_EnvCallee *);
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va_list * pXparam = va_arg(*pParam, va_list *);
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s_environment_invoke_v(pCurrEnv, pTargetEnv, pCallee, pXparam);
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}}
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static void s_environment_invoke_v(uno_Environment * pCurrEnv, uno_Environment * pTargetEnv, uno_EnvCallee * pCallee, va_list * pParam)
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{
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uno_Environment * pNextEnv = nullptr;
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switch(s_getNextEnv(&pNextEnv, pCurrEnv, pTargetEnv))
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{
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case -1:
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s_setCurrent(pNextEnv);
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s_callOut(pCurrEnv, s_environment_invoke_vv, pNextEnv, pTargetEnv, pCallee, pParam);
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s_setCurrent(pCurrEnv);
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break;
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case 0: {
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uno_Environment * hld = s_getCurrent();
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s_setCurrent(pCurrEnv);
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pCallee(pParam);
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s_setCurrent(hld);
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}
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break;
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case 1:
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s_setCurrent(pNextEnv);
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s_callInto(pNextEnv, s_environment_invoke_vv, pNextEnv, pTargetEnv, pCallee, pParam);
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s_setCurrent(pCurrEnv);
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break;
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}
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if (pNextEnv)
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pNextEnv->release(pNextEnv);
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}
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extern "C" void SAL_CALL uno_Environment_invoke_v(uno_Environment * pTargetEnv, uno_EnvCallee * pCallee, va_list * pParam) noexcept
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{
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s_environment_invoke_v(s_getCurrent(), pTargetEnv, pCallee, pParam);
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}
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extern "C" void SAL_CALL uno_Environment_invoke(uno_Environment * pEnv, uno_EnvCallee * pCallee, ...) noexcept
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{
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va_list param;
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va_start(param, pCallee);
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uno_Environment_invoke_v(pEnv, pCallee, ¶m);
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va_end(param);
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}
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extern "C" void SAL_CALL uno_Environment_enter(uno_Environment * pTargetEnv) noexcept
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{
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uno_Environment * pNextEnv = nullptr;
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uno_Environment * pCurrEnv = s_getCurrent();
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int res;
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while ( (res = s_getNextEnv(&pNextEnv, pCurrEnv, pTargetEnv)) != 0)
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{
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cppu::Enterable * pEnterable;
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switch(res)
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{
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case -1:
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pEnterable = static_cast<cppu::Enterable *>(pCurrEnv->pReserved);
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if (pEnterable)
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pEnterable->leave();
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pCurrEnv->release(pCurrEnv);
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break;
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case 1:
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pNextEnv->acquire(pNextEnv);
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pEnterable = static_cast<cppu::Enterable *>(pNextEnv->pReserved);
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if (pEnterable)
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pEnterable->enter();
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break;
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}
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s_setCurrent(pNextEnv);
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pCurrEnv = pNextEnv;
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}
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}
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int SAL_CALL uno_Environment_isValid(uno_Environment * pEnv, rtl_uString ** pReason) noexcept
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{
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int result = 1;
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OUString typeName(cppu::EnvDcp::getTypeName(pEnv->pTypeName));
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if (typeName == UNO_LB_UNO)
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{
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cppu::Enterable * pEnterable = static_cast<cppu::Enterable *>(pEnv->pReserved);
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if (pEnterable)
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result = pEnterable->isValid(reinterpret_cast<OUString *>(pReason));
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}
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else
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{
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OUString envDcp = UNO_LB_UNO + cppu::EnvDcp::getPurpose(pEnv->pTypeName);
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uno::Environment env(envDcp);
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result = env.isValid(reinterpret_cast<OUString *>(pReason));
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}
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return result;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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