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# ntqtextcodec.h

This is the verbatim text of the ntqtextcodec.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $Id: qt/ntqtextcodec.h   3.3.8   edited Jan 11 14:46 $
    **
    ** Definition of TQTextCodec class
    **
    ** Created : 981015
    **
    ** Copyright (C) 1998-2007 Trolltech ASA.  All rights reserved.
    **
    ** This file is part of the tools module of the TQt GUI Toolkit.
    **
    ** This file may be used under the terms of the GNU General Public
    ** License versions 2.0 or 3.0 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file. Alternatively you may (at your option) use any
    ** later version of the GNU General Public License if such license has
    ** been publicly approved by Trolltech ASA (or its successors, if any)
    ** and the KDE Free TQt Foundation.
    **
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    ** Public Licensing requirements will be met:
    ** http://trolltech.com/products/qt/licenses/licensing/opensource/.
    ** If you are unsure which license is appropriate for your use, please
    ** review the following information:
    ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
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    **
    ** This file may be used under the terms of the Q Public License as
    ** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
    ** included in the packaging of this file.  Licensees holding valid TQt
    ** Commercial licenses may use this file in accordance with the TQt
    ** Commercial License Agreement provided with the Software.
    **
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    **********************************************************************/

    #ifndef TQTEXTCODEC_H
    #define TQTEXTCODEC_H

    #ifndef QT_H
    #include "ntqstring.h"
    #endif // QT_H

    #ifndef TQT_NO_TEXTCODEC

    class TQTextCodec;
    class TQIODevice;
    class TQFont;

    class TQ_EXPORT TQTextEncoder {
    public:
        virtual ~TQTextEncoder();
        virtual TQCString fromUnicode(const TQString& uc, int& lenInOut) = 0;
    };

    class TQ_EXPORT TQTextDecoder {
    public:
        virtual ~TQTextDecoder();
        virtual TQString toUnicode(const char* chars, int len) = 0;
    };

    class TQ_EXPORT TQTextCodec {
    public:
        virtual ~TQTextCodec();

    #ifndef TQT_NO_CODECS
        static TQTextCodec* loadCharmap(TQIODevice*);
        static TQTextCodec* loadCharmapFile(TQString filename);
    #endif //TQT_NO_CODECS
        static TQTextCodec* codecForMib(int mib);
        static TQTextCodec* codecForName(const char* hint, int accuracy=0);
        static TQTextCodec* codecForContent(const char* chars, int len);
        static TQTextCodec* codecForIndex(int i);
        static TQTextCodec* codecForLocale();
        static void setCodecForLocale(TQTextCodec *c);

        static TQTextCodec* codecForTr();
        static void setCodecForTr(TQTextCodec *c);
        static TQTextCodec* codecForCStrings();
        static void setCodecForCStrings(TQTextCodec *c);

        static void deleteAllCodecs();

        static const char* locale();

        virtual const char* name() const = 0;
        virtual const char* mimeName() const;
        virtual int mibEnum() const = 0;

        virtual TQTextDecoder* makeDecoder() const;
        virtual TQTextEncoder* makeEncoder() const;

        virtual TQString toUnicode(const char* chars, int len) const;
        virtual TQCString fromUnicode(const TQString& uc, int& lenInOut) const;

        TQCString fromUnicode(const TQString& uc) const;
        TQString toUnicode(const TQByteArray&, int len) const;
        TQString toUnicode(const TQByteArray&) const;
        TQString toUnicode(const TQCString&, int len) const;
        TQString toUnicode(const TQCString&) const;
        TQString toUnicode(const char* chars) const;
        virtual bool canEncode( TQChar ) const;
        virtual bool canEncode( const TQString& ) const;

        virtual int heuristicContentMatch(const char* chars, int len) const = 0;
        virtual int heuristicNameMatch(const char* hint) const;

        virtual TQByteArray fromUnicode(const TQString& uc, int from, int len) const;
        virtual unsigned short characterFromUnicode(const TQString &str, int pos) const;

    protected:
        TQTextCodec();
        static int simpleHeuristicNameMatch(const char* name, const char* hint);

    private:
        friend class TQFont;
        friend class TQFontEngineXLFD;
        void fromUnicodeInternal( const TQChar *in, unsigned short *out,  int length );

        static TQTextCodec *cftr;
        static TQTextCodec *cfcs;
    };

    inline TQTextCodec* TQTextCodec::codecForTr() { return cftr; }
    inline void TQTextCodec::setCodecForTr(TQTextCodec *c) { cftr = c; }
    inline TQTextCodec* TQTextCodec::codecForCStrings() { return cfcs; }
    inline void TQTextCodec::setCodecForCStrings(TQTextCodec *c) { cfcs = c; }

    #endif // TQT_NO_TEXTCODEC
    #endif // TQTEXTCODEC_H