libkmime
kmime_codec_qp.h
00001 /* -*- c++ -*- 00002 kmime_codec_qp.h 00003 00004 This file is part of KMime, the KDE internet mail/usenet news message library. 00005 Copyright (c) 2001-2002 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_QP__ 00033 #define __KMIME_CODEC_QP__ 00034 00035 #include "kmime_codecs.h" 00036 00037 namespace KMime { 00038 00039 00040 class QuotedPrintableCodec : public Codec { 00041 protected: 00042 friend class Codec; 00043 QuotedPrintableCodec() : Codec() {} 00044 00045 public: 00046 virtual ~QuotedPrintableCodec() {} 00047 00048 const char * name() const { 00049 return "quoted-printable"; 00050 } 00051 00052 int maxEncodedSizeFor( int insize, bool withCRLF=false ) const { 00053 // all chars encoded: 00054 int result = 3*insize; 00055 // then after 25 hexchars comes a soft linebreak: =(\r)\n 00056 result += (withCRLF ? 3 : 2) * (insize/25); 00057 00058 return result; 00059 } 00060 00061 int maxDecodedSizeFor( int insize, bool withCRLF=false ) const; 00062 00063 Encoder * makeEncoder( bool withCRLF=false ) const; 00064 Decoder * makeDecoder( bool withCRLF=false ) const; 00065 }; 00066 00067 00068 class Rfc2047QEncodingCodec : public Codec { 00069 protected: 00070 friend class Codec; 00071 Rfc2047QEncodingCodec() : Codec() {} 00072 00073 public: 00074 virtual ~Rfc2047QEncodingCodec() {} 00075 00076 const char * name() const { 00077 return "q"; 00078 } 00079 00080 int maxEncodedSizeFor( int insize, bool withCRLF=false ) const { 00081 (void)withCRLF; // keep compiler happy 00082 // this one is simple: We don't do linebreaking, so all that can 00083 // happen is that every char needs encoding, so: 00084 return 3*insize; 00085 } 00086 00087 int maxDecodedSizeFor( int insize, bool withCRLF=false ) const; 00088 00089 Encoder * makeEncoder( bool withCRLF=false ) const; 00090 Decoder * makeDecoder( bool withCRLF=false ) const; 00091 }; 00092 00093 00094 class Rfc2231EncodingCodec : public Codec { 00095 protected: 00096 friend class Codec; 00097 Rfc2231EncodingCodec() : Codec() {} 00098 00099 public: 00100 virtual ~Rfc2231EncodingCodec() {} 00101 00102 const char * name() const { 00103 return "x-kmime-rfc2231"; 00104 } 00105 00106 int maxEncodedSizeFor( int insize, bool withCRLF=false ) const { 00107 (void)withCRLF; // keep compiler happy 00108 // same as for "q" encoding: 00109 return 3*insize; 00110 } 00111 00112 int maxDecodedSizeFor( int insize, bool withCRLF=false ) const; 00113 00114 Encoder * makeEncoder( bool withCRLF=false ) const; 00115 Decoder * makeDecoder( bool withCRLF=false ) const; 00116 }; 00117 00118 00119 } // namespace KMime 00120 00121 #endif // __KMIME_CODEC_QP__