libkmime

kmime_codec_identity.h

00001 /*  -*- c++ -*-
00002     kmime_codec_identity.h
00003 
00004     This file is part of KMime, the KDE internet mail/usenet news message library.
00005     Copyright (c) 2004 Marc Mutz <mutz@kde.org>
00006 
00007     KMime is free software; you can redistribute it and/or modify it
00008     under the terms of the GNU General Public License, version 2, as
00009     published by the Free Software Foundation.
00010 
00011     KMime is distributed in the hope that it will be useful, but
00012     WITHOUT ANY WARRANTY; without even the implied warranty of
00013     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014     General Public License for more details.
00015 
00016     You should have received a copy of the GNU General Public License
00017     along with this library; if not, write to the Free Software
00018     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
00019 
00020     In addition, as a special exception, the copyright holders give
00021     permission to link the code of this library with any edition of
00022     the Qt library by Trolltech AS, Norway (or with modified versions
00023     of Qt that use the same license as Qt), and distribute linked
00024     combinations including the two.  You must obey the GNU General
00025     Public License in all respects for all of the code used other than
00026     Qt.  If you modify this file, you may extend this exception to
00027     your version of the file, but you are not obligated to do so.  If
00028     you do not wish to do so, delete this exception statement from
00029     your version.
00030 */
00031 
00032 #ifndef __KMIME_CODEC_IDENTITY_H__
00033 #define __KMIME_CODEC_IDENTITY_H__
00034 
00035 #include "kmime_codecs.h"
00036 
00037 namespace KMime {
00038 
00039 class IdentityCodec : public Codec {
00040 protected:
00041   friend class Codec;
00042   IdentityCodec() : Codec() {}
00043 
00044 public:
00045   ~IdentityCodec() {}
00046 
00047   QByteArray encode( const QByteArray & src, bool withCRLF ) const;
00048   QCString encodeToQCString( const QByteArray & src, bool withCRLF ) const;
00049   QByteArray decode( const QByteArray & src, bool withCRLF ) const;
00050 
00051   int maxEncodedSizeFor( int insize, bool withCRLF ) const {
00052     if ( withCRLF )
00053       return 2 * insize;
00054     else
00055       return insize;
00056   }
00057 
00058   int maxDecodedSizeFor( int insize, bool withCRLF ) const {
00059     if ( withCRLF )
00060       return 2 * insize;
00061     else
00062       return insize;
00063   }
00064 
00065   Encoder * makeEncoder( bool withCRLF=false ) const;
00066   Decoder * makeDecoder( bool withCRLF=false ) const;
00067 };
00068 
00069 class SevenBitCodec : public IdentityCodec {
00070 protected:
00071   friend class Codec;
00072   SevenBitCodec() : IdentityCodec() {}
00073 
00074 public:
00075   ~SevenBitCodec() {}
00076 
00077   const char * name() const { return "7bit"; }
00078 };
00079 
00080 class EightBitCodec : public IdentityCodec {
00081 protected:
00082   friend class Codec;
00083   EightBitCodec() : IdentityCodec() {}
00084 
00085 public:
00086   ~EightBitCodec() {}
00087 
00088   const char * name() const { return "8bit"; }
00089 };
00090 
00091 class BinaryCodec : public IdentityCodec {
00092 protected:
00093   friend class Codec;
00094   BinaryCodec() : IdentityCodec() {}
00095 
00096 public:
00097   ~BinaryCodec() {}
00098 
00099   const char * name() const { return "binary"; }
00100 
00101   int maxEncodedSizeFor( int insize, bool ) {
00102     return insize;
00103   }
00104   int maxDecodedSizeFor( int insize, bool ) const {
00105     return insize;
00106   }
00107 
00108   QCString encodeToQCString( const QByteArray &, bool ) const {
00109     return QCString();
00110   }
00111 
00112 };
00113 
00114 } // namespace KMime
00115 
00116 #endif // __KMIME_CODEC_IDENTITY_H__
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