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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_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(std::u16string_view _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, OUString _sIanaName );
};
//- 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 _aPos );
};
} // namespace dbtools
#endif // INCLUDED_CONNECTIVITY_DBCHARSET_HXX
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