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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 .
+ */
+#ifndef INCLUDED_XMLHELP_SOURCE_CXXHELP_PROVIDER_DB_HXX
+#define INCLUDED_XMLHELP_SOURCE_CXXHELP_PROVIDER_DB_HXX
+
+#include <com/sun/star/ucb/XSimpleFileAccess3.hpp>
+#include <comphelper/fileurl.hxx>
+#include <osl/diagnose.h>
+#include <rtl/string.hxx>
+#include <memory>
+#include <unordered_map>
+
+namespace helpdatafileproxy {
+
+ class HDFData
+ {
+ friend class Hdf;
+
+ int m_nSize;
+ std::unique_ptr<char[]> m_pBuffer;
+
+ void copyToBuffer( const char* pSrcData, int nSize );
+
+ public:
+ HDFData() : m_nSize( 0 ) {}
+
+ int getSize() const
+ { return m_nSize; }
+ const char* getData() const
+ { return m_pBuffer.get(); }
+ };
+
+ typedef std::unordered_map< OString,std::pair<int,int> > StringToValPosMap;
+ typedef std::unordered_map< OString,OString > StringToDataMap;
+
+ class Hdf
+ {
+ OUString m_aFileURL;
+ std::unique_ptr<StringToDataMap> m_pStringToDataMap;
+ std::unique_ptr<StringToValPosMap> m_pStringToValPosMap;
+ css::uno::Reference< css::ucb::XSimpleFileAccess3 >
+ m_xSFA;
+
+ css::uno::Sequence< sal_Int8 >
+ m_aItData;
+ const char* m_pItData;
+ int m_nItRead;
+ int m_iItPos;
+
+ static bool implReadLenAndData( const char* pData, int& riPos, HDFData& rValue );
+
+ public:
+ //HDFHelp must get a fileURL which can then directly be used by simple file access.
+ //SimpleFileAccess requires file URLs as arguments. Passing file path may work but fails
+ //for example when using long file paths on Windows, which start with "\\?\"
+ Hdf( const OUString& rFileURL,
+ css::uno::Reference< css::ucb::XSimpleFileAccess3 > const & xSFA )
+ : m_aFileURL( rFileURL )
+ , m_xSFA( xSFA )
+ , m_pItData( nullptr )
+ , m_nItRead( -1 )
+ , m_iItPos( -1 )
+ {
+ OSL_ASSERT(comphelper::isFileUrl(rFileURL));
+ }
+ ~Hdf();
+
+ void createHashMap( bool bOptimizeForPerformance );
+ void releaseHashMap();
+
+ bool getValueForKey( const OString& rKey, HDFData& rValue );
+
+ bool startIteration();
+ bool getNextKeyAndValue( HDFData& rKey, HDFData& rValue );
+ void stopIteration();
+ Hdf(const Hdf&) = delete;
+ void operator=(const Hdf&) = delete;
+ };
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */