libkmime/kmime_codec_identity.h

   1 /*  -*- c++ -*-
   2     kmime_codec_identity.h
   3
   4     This file is part of KMime, the KDE internet mail/usenet news message library.
   5     Copyright (c) 2004 Marc Mutz <mutz@kde.org>
   6
   7     KMime is free software; you can redistribute it and/or modify it
   8     under the terms of the GNU General Public License, version 2, as
   9     published by the Free Software Foundation.
  10
  11     KMime is distributed in the hope that it will be useful, but
  12     WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14     General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this library; if not, write to the Free Software
  18     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  19
  20     In addition, as a special exception, the copyright holders give
  21     permission to link the code of this library with any edition of
  22     the Qt library by Trolltech AS, Norway (or with modified versions
  23     of Qt that use the same license as Qt), and distribute linked
  24     combinations including the two.  You must obey the GNU General
  25     Public License in all respects for all of the code used other than
  26     Qt.  If you modify this file, you may extend this exception to
  27     your version of the file, but you are not obligated to do so.  If
  28     you do not wish to do so, delete this exception statement from
  29     your version.
  30 */
  31
  32 #ifndef __KMIME_CODEC_IDENTITY_H__
  33 #define __KMIME_CODEC_IDENTITY_H__
  34
  35 #include "kmime_codecs.h"
  36
  37 namespace KMime {
  38
  39 class IdentityCodec : public Codec {
  40 protected:
  41   friend class Codec;
  42   IdentityCodec() : Codec() {}
  43
  44 public:
  45   ~IdentityCodec() {}
  46
  47   QByteArray encode( const QByteArray & src, bool withCRLF ) const;
  48   QCString encodeToQCString( const QByteArray & src, bool withCRLF ) const;
  49   QByteArray decode( const QByteArray & src, bool withCRLF ) const;
  50
  51   int maxEncodedSizeFor( int insize, bool withCRLF ) const {
  52     if ( withCRLF )
  53       return 2 * insize;
  54     else
  55       return insize;
  56   }
  57
  58   int maxDecodedSizeFor( int insize, bool withCRLF ) const {
  59     if ( withCRLF )
  60       return 2 * insize;
  61     else
  62       return insize;
  63   }
  64
  65   Encoder * makeEncoder( bool withCRLF=false ) const;
  66   Decoder * makeDecoder( bool withCRLF=false ) const;
  67 };
  68
  69 class SevenBitCodec : public IdentityCodec {
  70 protected:
  71   friend class Codec;
  72   SevenBitCodec() : IdentityCodec() {}
  73
  74 public:
  75   ~SevenBitCodec() {}
  76
  77   const char * name() const { return "7bit"; }
  78 };
  79
  80 class EightBitCodec : public IdentityCodec {
  81 protected:
  82   friend class Codec;
  83   EightBitCodec() : IdentityCodec() {}
  84
  85 public:
  86   ~EightBitCodec() {}
  87
  88   const char * name() const { return "8bit"; }
  89 };
  90
  91 class BinaryCodec : public IdentityCodec {
  92 protected:
  93   friend class Codec;
  94   BinaryCodec() : IdentityCodec() {}
  95
  96 public:
  97   ~BinaryCodec() {}
  98
  99   const char * name() const { return "binary"; }
 100
 101   int maxEncodedSizeFor( int insize, bool ) {
 102     return insize;
 103   }
 104   int maxDecodedSizeFor( int insize, bool ) const {
 105     return insize;
 106   }
 107
 108   QCString encodeToQCString( const QByteArray &, bool ) const {
 109     return QCString();
 110   }
 111
 112 };
 113
 114 } // namespace KMime
 115
 116 #endif // __KMIME_CODEC_IDENTITY_H__