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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef _DBHELPER_DBCHARSET_HXX_
#define _DBHELPER_DBCHARSET_HXX_
#include <comphelper/stl_types.hxx>
#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:
DECLARE_STL_STDKEY_SET( rtl_TextEncoding, TextEncBag );
TextEncBag m_aEncodings;
public:
class CharsetIterator;
friend class OCharsetMap::CharsetIterator;
typedef CharsetIterator iterator;
typedef CharsetIterator const_iterator;
OCharsetMap();
virtual ~OCharsetMap();
struct IANA { };
/** 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 find(const ::rtl::OUString& _rIanaName, const IANA&) const;
sal_Int32 size() const { ensureConstructed( ); return m_aEncodings.size(); }
/// 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();
inline void ensureConstructed( ) const { if ( m_aEncodings.empty() ) const_cast< OCharsetMap* >( this )->lateConstruct(); }
virtual sal_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;
::rtl::OUString m_aIanaName;
public:
CharsetIteratorDerefHelper(const CharsetIteratorDerefHelper& _rSource);
rtl_TextEncoding getEncoding() const { return m_eEncoding; }
::rtl::OUString getIanaName() const { return m_aIanaName; }
protected:
CharsetIteratorDerefHelper();
CharsetIteratorDerefHelper( const rtl_TextEncoding _eEncoding, const ::rtl::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);
protected:
const OCharsetMap* m_pContainer;
OCharsetMap::TextEncBag::const_iterator m_aPos;
public:
CharsetIterator(const CharsetIterator& _rSource);
~CharsetIterator();
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++();
/// postfix increment
const CharsetIterator operator++(int) { CharsetIterator hold(*this); ++*this; return hold; }
/// prefix decrement
const CharsetIterator& operator--();
/// postfix decrement
const CharsetIterator operator--(int) { CharsetIterator hold(*this); --*this; return hold; }
protected:
CharsetIterator(const OCharsetMap* _pContainer, OCharsetMap::TextEncBag::const_iterator _aPos );
};
//.........................................................................
} // namespace dbtools
//.........................................................................
#endif // _DBHELPER_DBCHARSET_HXX_
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