kmime_codec_identity.h

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/*  -*- c++ -*-
    kmime_codec_identity.h

    KMime, the KDE Internet mail/usenet news message library.
    Copyright (c) 2004 Marc Mutz <mutz@kde.org>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library 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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/
#ifndef __KMIME_CODEC_IDENTITY_H__
#define __KMIME_CODEC_IDENTITY_H__

#include "kmime_codecs.h"

class QByteArray;

namespace KMime {

class KMIME_EXPORT IdentityCodec : public Codec
{
  protected:
    friend class Codec;
    IdentityCodec() : Codec() {}

  public:
    ~IdentityCodec() {}

    using Codec::encode;
    using Codec::decode;

    QByteArray encode( const QByteArray &src, bool withCRLF=false ) const;

    QByteArray decode( const QByteArray &src, bool withCRLF=false ) const;

    int maxEncodedSizeFor( int insize, bool withCRLF ) const
    {
      if ( withCRLF ) {
        return 2 * insize;
      } else {
        return insize;
      }
    }

    int maxDecodedSizeFor( int insize, bool withCRLF ) const
    {
      if ( withCRLF ) {
        return 2 * insize;
      } else {
        return insize;
      }
    }

    Encoder *makeEncoder( bool withCRLF=false ) const;

    Decoder *makeDecoder( bool withCRLF=false ) const;
};

class KMIME_EXPORT SevenBitCodec : public IdentityCodec
{
  protected:
    friend class Codec;
    SevenBitCodec() : IdentityCodec() {}

  public:
    ~SevenBitCodec() {}

    const char *name() const
    { return "7bit"; }
};

class KMIME_EXPORT EightBitCodec : public IdentityCodec
{
  protected:
    friend class Codec;
    EightBitCodec() : IdentityCodec() {}

  public:
    ~EightBitCodec() {}

    const char *name() const
    { return "8bit"; }
};

class KMIME_EXPORT BinaryCodec : public IdentityCodec
{
  protected:
    friend class Codec;
    BinaryCodec() : IdentityCodec() {}

  public:
    ~BinaryCodec() {}

    const char *name() const
    { return "binary"; }

    int maxEncodedSizeFor( int insize, bool withCRLF=false ) const
    { Q_UNUSED( withCRLF ); return insize; }

    int maxDecodedSizeFor( int insize, bool withCRLF=false ) const
    { Q_UNUSED( withCRLF ); return insize; }
};

} // namespace KMime

#endif // __KMIME_CODEC_IDENTITY_H__