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KMIME Library

kmime_codec_identity.h

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00001 /*  -*- c++ -*-
00002     kmime_codec_identity.h
00003 
00004     KMime, the KDE internet mail/usenet news message library.
00005     Copyright (c) 2004 Marc Mutz <mutz@kde.org>
00006 
00007     This library is free software; you can redistribute it and/or
00008     modify it under the terms of the GNU Library General Public
00009     License as published by the Free Software Foundation; either
00010     version 2 of the License, or (at your option) any later version.
00011 
00012     This library is distributed in the hope that it will be useful,
00013     but WITHOUT ANY WARRANTY; without even the implied warranty of
00014     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015     Library General Public License for more details.
00016 
00017     You should have received a copy of the GNU Library General Public License
00018     along with this library; see the file COPYING.LIB.  If not, write to
00019     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00020     Boston, MA 02110-1301, USA.
00021 */
00035 #ifndef __KMIME_CODEC_IDENTITY_H__
00036 #define __KMIME_CODEC_IDENTITY_H__
00037 
00038 #include "kmime_codecs.h"
00039 
00040 class QByteArray;
00041 
00042 namespace KMime {
00043 
00048 class KMIME_EXPORT IdentityCodec : public Codec
00049 {
00050   protected:
00051     friend class Codec;
00055     IdentityCodec() : Codec() {}
00056 
00057   public:
00061     ~IdentityCodec() {}
00062 
00063     using Codec::encode;
00064     using Codec::decode;
00065 
00070     QByteArray encode( const QByteArray &src, bool withCRLF=false ) const;
00071 
00076     QByteArray decode( const QByteArray &src, bool withCRLF=false ) const;
00077 
00082     int maxEncodedSizeFor( int insize, bool withCRLF ) const
00083     {
00084       if ( withCRLF ) {
00085         return 2 * insize;
00086       } else {
00087         return insize;
00088       }
00089     }
00090 
00095     int maxDecodedSizeFor( int insize, bool withCRLF ) const
00096     {
00097       if ( withCRLF ) {
00098         return 2 * insize;
00099       } else {
00100         return insize;
00101       }
00102     }
00103 
00108     Encoder *makeEncoder( bool withCRLF=false ) const;
00109 
00114     Decoder *makeDecoder( bool withCRLF=false ) const;
00115 };
00116 
00121 class KMIME_EXPORT SevenBitCodec : public IdentityCodec
00122 {
00123   protected:
00124     friend class Codec;
00128     SevenBitCodec() : IdentityCodec() {}
00129 
00130   public:
00134     ~SevenBitCodec() {}
00135 
00140     const char *name() const
00141     { return "7bit"; }
00142 };
00143 
00148 class KMIME_EXPORT EightBitCodec : public IdentityCodec
00149 {
00150   protected:
00151     friend class Codec;
00155     EightBitCodec() : IdentityCodec() {}
00156 
00157   public:
00161     ~EightBitCodec() {}
00162 
00167     const char *name() const
00168     { return "8bit"; }
00169 };
00170 
00175 class KMIME_EXPORT BinaryCodec : public IdentityCodec
00176 {
00177   protected:
00178     friend class Codec;
00182     BinaryCodec() : IdentityCodec() {}
00183 
00184   public:
00188     ~BinaryCodec() {}
00189 
00194     const char *name() const
00195     { return "binary"; }
00196 
00201     int maxEncodedSizeFor( int insize, bool withCRLF=false ) const
00202     { Q_UNUSED( withCRLF ); return insize; }
00203 
00208     int maxDecodedSizeFor( int insize, bool withCRLF=false ) const
00209     { Q_UNUSED( withCRLF ); return insize; }
00210 };
00211 
00212 } // namespace KMime
00213 
00214 #endif // __KMIME_CODEC_IDENTITY_H__

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