111 lines
3.3 KiB
C++
111 lines
3.3 KiB
C++
//
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// VMime library (http://www.vmime.org)
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// Copyright (C) 2002-2005 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 2 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
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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#ifndef VMIME_CONTENTHANDLER_HPP_INCLUDED
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#define VMIME_CONTENTHANDLER_HPP_INCLUDED
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#include <limits>
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#include "vmime/base.hpp"
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#include "vmime/utility/stringProxy.hpp"
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#include "vmime/utility/smartPtr.hpp"
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#include "vmime/encoding.hpp"
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namespace vmime
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{
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class contentHandler : public object
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{
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public:
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/** Used to specify that enclosed data is not encoded. */
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static const vmime::encoding NO_ENCODING;
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virtual ~contentHandler();
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/** Return a copy of this object.
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*
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* @return copy of this object
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*/
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virtual ref <contentHandler> clone() const = 0;
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/** Output the contents into the specified stream. Data will be
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* encoded before being written into the stream. This is used internally
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* by the body object to generate the message, you may not need to use
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* this (see contentHandler::extract() if you want to get the contents).
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*
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* @param os output stream
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* @param enc encoding for output
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* @param maxLineLength maximum line length for output
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*/
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virtual void generate(utility::outputStream& os, const vmime::encoding& enc, const string::size_type maxLineLength = lineLengthLimits::infinite) const = 0;
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/** Extract the contents into the specified stream. If needed, data
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* will be decoded before being written into the stream.
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*
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* @throw exceptions::no_encoder_available if the encoding is
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* not supported
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* @param os output stream
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*/
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virtual void extract(utility::outputStream& os) const = 0;
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/** Extract the contents into the specified stream, without
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* decoding it. It may be useful in case the encoding is not
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* supported and you want to extract raw data.
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*
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* @param os output stream
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*/
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virtual void extractRaw(utility::outputStream& os) const = 0;
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/** Returns the actual length of data. WARNING: this can return 0 if no
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* length was specified when setting data of this object.
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*
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* @return length of data
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*/
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virtual const string::size_type getLength() const = 0;
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/** Returns 'true' if data managed by this object is encoded.
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*
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* @return true if data is encoded, false otherwise
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*/
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virtual const bool isEncoded() const = 0;
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/** Returns the encoding used for data (or "binary" if not encoded).
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*
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* @return encoding used for data
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*/
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virtual const vmime::encoding& getEncoding() const = 0;
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/** Returns 'true' if there is no data set.
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*
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* @return true if no data is managed by this object, false otherwise
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*/
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virtual const bool isEmpty() const = 0;
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};
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} // vmime
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#endif // VMIME_CONTENTHANDLER_HPP_INCLUDED
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