/* -*- 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_CONNECTIVITY_DBCHARSET_HXX #define INCLUDED_CONNECTIVITY_DBCHARSET_HXX #include <sal/config.h> #include <set> #include <rtl/textenc.h> #include <rtl/tencinfo.h> #include <rtl/ustring.hxx> #include <connectivity/dbtoolsdllapi.hxx> namespace dbtools { //= OCharsetMap /** is a class which translates between different charset representations. <p>The set of recognized charsets is very limited: only the ones which are database relevant are implemented at the moment</p> <p>Possible representations are: <ul> <li><b>IANA names.</b> Have a look at <A href="http://www.iana.org/assignments/character-sets">this document</A> for more details</li> <li><b>rtl_TextEncoding</b></li> </ul> </p> */ class OOO_DLLPUBLIC_DBTOOLS OCharsetMap { protected: typedef std::set<rtl_TextEncoding> TextEncBag; TextEncBag m_aEncodings; public: class CharsetIterator; friend class OCharsetMap::CharsetIterator; typedef CharsetIterator iterator; typedef CharsetIterator const_iterator; OCharsetMap(); virtual ~OCharsetMap(); /** find the given text encoding in the map. @return the <em>end</em> iterator if the encoding could not be found. */ CharsetIterator find(const rtl_TextEncoding _eEncoding) const; /** find the given IANA name in the map. @return the <em>end</em> iterator if the IANA name could not be found. */ CharsetIterator findIanaName(const OUString& _rIanaName) const; /// get access to the first element of the charset collection CharsetIterator begin() const; /// get access to the (last + 1st) element of the charset collection CharsetIterator end() const; protected: // needed because we want to call a virtual method during construction void lateConstruct(); void ensureConstructed( ) const { if ( m_aEncodings.empty() ) const_cast< OCharsetMap* >( this )->lateConstruct(); } virtual bool approveEncoding( const rtl_TextEncoding _eEncoding, const rtl_TextEncodingInfo& _rInfo ) const; }; //- CharsetIteratorDerefHelper class OOO_DLLPUBLIC_DBTOOLS CharsetIteratorDerefHelper { friend class OCharsetMap::CharsetIterator; rtl_TextEncoding m_eEncoding; OUString m_aIanaName; public: CharsetIteratorDerefHelper(const CharsetIteratorDerefHelper& _rSource); rtl_TextEncoding getEncoding() const { return m_eEncoding; } const OUString& getIanaName() const { return m_aIanaName; } protected: CharsetIteratorDerefHelper( const rtl_TextEncoding _eEncoding, const OUString& _rIanaName ); }; //- OCharsetMap::CharsetIterator class OOO_DLLPUBLIC_DBTOOLS OCharsetMap::CharsetIterator { friend class OCharsetMap; friend OOO_DLLPUBLIC_DBTOOLS bool operator==(const CharsetIterator& lhs, const CharsetIterator& rhs); friend bool operator!=(const CharsetIterator& lhs, const CharsetIterator& rhs) { return !(lhs == rhs); } // friend sal_Int32 operator-(const CharsetIterator& lhs, const CharsetIterator& rhs); const OCharsetMap* m_pContainer; OCharsetMap::TextEncBag::const_iterator m_aPos; public: CharsetIteratorDerefHelper operator*() const; // no -> operator // this would require us to a) store CharsetIteratorDerefHelper instances ourself so that we // can return a pointer or b) introduce a -> operator on the CharsetIteratorDerefHelper, too. /// prefix increment const CharsetIterator& operator++(); /// prefix decrement const CharsetIterator& operator--(); protected: CharsetIterator(const OCharsetMap* _pContainer, OCharsetMap::TextEncBag::const_iterator const & _aPos ); }; } // namespace dbtools #endif // INCLUDED_CONNECTIVITY_DBCHARSET_HXX /* vim:set shiftwidth=4 softtabstop=4 expandtab: */