112 lines
2.6 KiB
C++
112 lines
2.6 KiB
C++
//
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// VMime library (http://www.vmime.org)
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// Copyright (C) 2002-2009 Vincent Richard <vincent@vincent-richard.net>
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 3 of
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// the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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//
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// Linking this library statically or dynamically with other modules is making
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// a combined work based on this library. Thus, the terms and conditions of
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// the GNU General Public License cover the whole combination.
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//
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#ifndef VMIME_WORDENCODER_HPP_INCLUDED
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#define VMIME_WORDENCODER_HPP_INCLUDED
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#include "vmime/charset.hpp"
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namespace vmime
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{
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namespace utility {
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namespace encoder {
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class encoder;
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} // encoder
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} // utility
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/** Encodes words following RFC-2047.
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*/
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class wordEncoder
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{
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public:
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/** Available encodings for RFC-2047. */
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enum Encoding
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{
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ENCODING_AUTO,
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ENCODING_QP,
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ENCODING_B64
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};
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wordEncoder(const string& buffer, const charset& charset, const Encoding encoding = ENCODING_AUTO);
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/** Return the next chunk in the word.
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*
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* @param maxLength maximal length of the chunk
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* @return next chunk, of maximal length 'maxLength' if possible
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*/
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const string getNextChunk(const string::size_type maxLength);
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/** Return the encoding used.
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*
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* @return encoding
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*/
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Encoding getEncoding() const;
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/** Test whether RFC-2047 encoding is needed.
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*
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* @param buffer buffer to analyze
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* @param charset charset of the buffer
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* @return true if encoding is needed, false otherwise.
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*/
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static bool isEncodingNeeded(const string& buffer, const charset& charset);
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/** Guess the best RFC-2047 encoding to use for the specified buffer.
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*
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* @param buffer buffer to analyze
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* @param charset charset of the buffer
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* @return RFC-2047 encoding
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*/
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static Encoding guessBestEncoding(const string& buffer, const charset& charset);
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private:
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string m_buffer;
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string::size_type m_pos;
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string::size_type m_length;
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bool m_simple;
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charset m_charset;
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Encoding m_encoding;
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ref <utility::encoder::encoder> m_encoder;
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};
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} // vmime
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#endif // VMIME_WORDENCODER_HPP_INCLUDED
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