1 files changed, 203 insertions, 0 deletions
diff --git a/scripting/source/provider/ProviderCache.cxx b/scripting/source/provider/ProviderCache.cxx
new file mode 100644
index 000000000..8533fc384
--- /dev/null
+++ b/scripting/source/provider/ProviderCache.cxx
@@ -0,0 +1,203 @@
+/* -*- 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 <comphelper/sequence.hxx>
+#include <tools/diagnose_ex.h>
+#include <sal/log.hxx>
+
+#include <com/sun/star/container/XContentEnumerationAccess.hpp>
+#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include "ProviderCache.hxx"
+
+using namespace com::sun::star;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::script;
+
+namespace func_provider
+{
+
+ProviderCache::ProviderCache( const Reference< XComponentContext >& xContext, const Sequence< Any >& scriptContext ) : m_Sctx( scriptContext ), m_xContext( xContext )
+{
+    // initialise m_hProviderDetailsCache with details of ScriptProviders
+    // will use createContentEnumeration
+
+    m_xMgr = m_xContext->getServiceManager();
+    ENSURE_OR_THROW( m_xMgr.is(), "ProviderCache::ProviderCache() failed to obtain ServiceManager" );
+    populateCache();
+}
+
+
+ProviderCache::ProviderCache( const Reference< XComponentContext >& xContext, const Sequence< Any >& scriptContext, const Sequence< OUString >& denyList ) : m_sDenyList( denyList ), m_Sctx( scriptContext ), m_xContext( xContext )
+
+{
+    // initialise m_hProviderDetailsCache with details of ScriptProviders
+    // will use createContentEnumeration
+
+    m_xMgr = m_xContext->getServiceManager();
+    ENSURE_OR_THROW( m_xMgr.is(), "ProviderCache::ProviderCache() failed to obtain ServiceManager" );
+    populateCache();
+}
+
+ProviderCache::~ProviderCache()
+{
+}
+
+Reference< provider::XScriptProvider >
+ProviderCache::getProvider( const OUString& providerName )
+{
+    std::scoped_lock aGuard( m_mutex );
+    Reference< provider::XScriptProvider > provider;
+    ProviderDetails_hash::iterator h_it = m_hProviderDetailsCache.find( providerName );
+    if ( h_it != m_hProviderDetailsCache.end() )
+    {
+        if (  h_it->second.provider.is() )
+        {
+            provider = h_it->second.provider;
+        }
+        else
+        {
+            // need to create provider and insert into hash
+            provider = createProvider( h_it->second );
+        }
+    }
+    return provider;
+}
+
+Sequence < Reference< provider::XScriptProvider > >
+ProviderCache::getAllProviders()
+{
+    // need to create providers that haven't been created already
+    // so check what providers exist and what ones don't
+
+    std::scoped_lock aGuard( m_mutex );
+    Sequence < Reference< provider::XScriptProvider > > providers (  m_hProviderDetailsCache.size() );
+    // should assert if size !>  0
+    if (  !m_hProviderDetailsCache.empty() )
+    {
+        auto pproviders = providers.getArray();
+        sal_Int32 providerIndex = 0;
+        for (auto& rDetail : m_hProviderDetailsCache)
+        {
+            Reference<provider::XScriptProvider> xScriptProvider = rDetail.second.provider;
+            if ( xScriptProvider.is() )
+            {
+                pproviders[ providerIndex++ ] = xScriptProvider;
+            }
+            else
+            {
+                // create provider
+                try
+                {
+                    xScriptProvider = createProvider(rDetail.second);
+                    pproviders[ providerIndex++ ] = xScriptProvider;
+                }
+                catch ( const Exception& )
+                {
+                    DBG_UNHANDLED_EXCEPTION("scripting");
+                }
+            }
+        }
+
+        if (providerIndex < providers.getLength())
+        {
+            providers.realloc( providerIndex );
+        }
+
+    }
+    else
+    {
+        SAL_WARN("scripting", "no available providers, something very wrong!!!");
+    }
+    return providers;
+}
+
+void
+ProviderCache::populateCache()
+{
+    // wrong name in services.rdb
+    OUString serviceName;
+    std::scoped_lock aGuard( m_mutex );
+    try
+    {
+        Reference< container::XContentEnumerationAccess > xEnumAccess( m_xMgr, UNO_QUERY_THROW );
+        Reference< container::XEnumeration > xEnum = xEnumAccess->createContentEnumeration ( "com.sun.star.script.provider.LanguageScriptProvider" );
+
+        while ( xEnum->hasMoreElements() )
+        {
+
+            Reference< lang::XSingleComponentFactory > factory( xEnum->nextElement(), UNO_QUERY_THROW );
+            Reference< lang::XServiceInfo > xServiceInfo( factory, UNO_QUERY_THROW );
+
+            const Sequence< OUString > serviceNames = xServiceInfo->getSupportedServiceNames();
+
+            if ( serviceNames.hasElements() )
+            {
+                auto pName = std::find_if(serviceNames.begin(), serviceNames.end(),
+                    [this](const OUString& rName) {
+                        return rName.startsWith("com.sun.star.script.provider.ScriptProviderFor")
+                            && !isInDenyList(rName);
+                    });
+                if (pName != serviceNames.end())
+                {
+                    serviceName = *pName;
+                    ProviderDetails details;
+                    details.factory = factory;
+                    m_hProviderDetailsCache[ serviceName ] = details;
+                }
+            }
+        }
+    }
+    catch ( const Exception &e )
+    {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw css::lang::WrappedTargetRuntimeException(
+                "ProviderCache::populateCache: couldn't obtain XSingleComponentFactory for " + serviceName
+                + " " + e.Message,
+                nullptr, anyEx );
+    }
+}
+
+Reference< provider::XScriptProvider >
+ProviderCache::createProvider( ProviderDetails& details )
+{
+    try
+    {
+        details.provider.set(
+            details.factory->createInstanceWithArgumentsAndContext( m_Sctx, m_xContext ), UNO_QUERY_THROW );
+    }
+    catch ( const Exception& e )
+    {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw css::lang::WrappedTargetRuntimeException(
+                "ProviderCache::createProvider() Error creating provider from factory. " + e.Message,
+                nullptr, anyEx );
+    }
+
+    return details.provider;
+}
+
+bool
+ProviderCache::isInDenyList( const OUString& serviceName ) const
+{
+    return comphelper::findValue(m_sDenyList, serviceName) != -1;
+}
+} //end namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */