/****************************************************************************
**
** Copyright (C) 2003-2006 Tilo Riemer <riemer@crossvc.com>,
**                         Frank Hemer <frank@hemer.org>
**
**
**----------------------------------------------------------------------------
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**----------------------------------------------------------------------------
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** CrossVC is released under the terms of GPL also.
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** CrossVC is released under the terms of the 
** CrossVC License for non-Unix platforms (CLNU)
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** Redistribution and use in binary form, without modification, 
** are permitted provided that the following conditions are met:
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** This program is free software; you can redistribute it and/or modify 
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** See the GNU General Public License version 2 for more details.
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*****************************************************************************/

#ifndef TEXTCODEC_H_20031008
#define TEXTCODEC_H_20031008

//----------------------------------------------------------------------------

#include <qdict.h>
#include <qptrvector.h>
#include <qtextcodec.h>

//----------------------------------------------------------------------------

namespace TextCodec {
   static const char DEFAULT_CODEC[]    = "ISO8859-1";
   static const char CODEC_FOR_LOCALE[] = "CODEC_FOR_LOCALE";

   struct SCodec {
      SCodec(QString n, QString c) : name(n), comment(c) {}
      QString name;
      QString comment;
   };
};

//----------------------------------------------------------------------------

//exceptions
class XI18n {};
class XCreateCodecFailed : public XI18n {};

//----------------------------------------------------------------------------

class CTextCodecPool
{
public:
   
   /**
      Creates the codec pool. After construction the pool is empty.
   */
   CTextCodecPool();
   
   ~CTextCodecPool() {;}

   /** 
       Creates and adds the default codec (ISO8859-1).
       If the codec exists already this function does nothing.
       If creation of codec fails the functions throws an 
       exception (XCreateCodecFailed).
   */
   void addDefaultCodec();

   /** 
       Creates and adds a codec for locale. 
       If the codec exists already this function does nothing.
       If creation of codec fails the functions throws an 
       exception (XCreateCodecFailed).
   */
   void addCodecForLocale();
   
   /** 
       Creates and adds a codec for passed name. 
       If the codec exists already this function does nothing.
       If creation of codec fails the functions throws an 
       exception (XCreateCodecFailed).
   */
   void addCodecForName(const char* name);

   /* 
      Returns a pointer at the default codec or 0 if the 
      codec does not exist. 
   */
   QTextCodec *pDefaultCodec();

   /* 
      Returns a pointer at the codec-for-locale or 0 if the 
      codec does not exist. 
   */
   QTextCodec *pCodecForLocale();

   /* 
      Returns a pointer at the codec-for-name or 0 if the 
      codec does not exist.
   */
   QTextCodec *pCodecForName(const char* name);

   /** Returns the name of codec for locale. */
   QString nameOfCodecForLocale() const { return m_nameOfCodecForLocale; }

   /** Returns a pointer at a vector containing the supported codecs. */
   const QPtrVector<TextCodec::SCodec>* supportedCodecs() const { return &m_supportedCodecs; }
   
private:

   void initSupportedCodecs();

   QDict<QTextCodec> m_codecDict;
   QString m_nameOfCodecForLocale;
   QPtrVector<TextCodec::SCodec> m_supportedCodecs;
};

//----------------------------------------------------------------------------

#endif //TEXTCODEC_H_20031008

