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diff --git a/vmime-master/src/vmime/contentHandler.hpp b/vmime-master/src/vmime/contentHandler.hpp
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+++ b/vmime-master/src/vmime/contentHandler.hpp
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+//
+// VMime library (http://www.vmime.org)
+// Copyright (C) 2002 Vincent Richard <vincent@vmime.org>
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 3 of
+// the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// Linking this library statically or dynamically with other modules is making
+// a combined work based on this library.  Thus, the terms and conditions of
+// the GNU General Public License cover the whole combination.
+//
+
+#ifndef VMIME_CONTENTHANDLER_HPP_INCLUDED
+#define VMIME_CONTENTHANDLER_HPP_INCLUDED
+
+
+#include <limits>
+
+#include "vmime/base.hpp"
+#include "vmime/utility/progressListener.hpp"
+#include "vmime/encoding.hpp"
+#include "vmime/mediaType.hpp"
+
+
+namespace vmime {
+
+
+class VMIME_EXPORT contentHandler : public object {
+
+public:
+
+	/** Used to specify that enclosed data is not encoded. */
+	static const vmime::encoding NO_ENCODING;
+
+
+	virtual ~contentHandler();
+
+	/** Return a copy of this object.
+	  *
+	  * @return copy of this object
+	  */
+	virtual shared_ptr <contentHandler> clone() const = 0;
+
+	/** Output the contents into the specified stream. Data will be
+	  * encoded before being written into the stream. This is used internally
+	  * by the body object to generate the message, you may not need to use
+	  * this (see contentHandler::extract() if you want to get the contents).
+	  *
+	  * @param os output stream
+	  * @param enc encoding for output
+	  * @param maxLineLength maximum line length for output
+	  */
+	virtual void generate(
+		utility::outputStream& os,
+		const vmime::encoding& enc,
+		const size_t maxLineLength = lineLengthLimits::infinite
+	) const = 0;
+
+	/** Extract the contents into the specified stream. If needed, data
+	  * will be decoded before being written into the stream.
+	  *
+	  * @throw exceptions::no_encoder_available if the encoding is
+	  * not supported
+	  * @param os output stream
+	  * @param progress progress listener, or NULL if you do not
+	  * want to receive progress notifications
+	  */
+	virtual void extract(
+		utility::outputStream& os,
+		utility::progressListener* progress = NULL
+	) const = 0;
+
+	/** Extract the contents into the specified stream, without
+	  * decoding it. It may be useful in case the encoding is not
+	  * supported and you want to extract raw data.
+	  *
+	  * @param os output stream
+	  * @param progress progress listener, or NULL if you do not
+	  * want to receive progress notifications
+	  */
+	virtual void extractRaw(
+		utility::outputStream& os,
+		utility::progressListener* progress = NULL
+	) const = 0;
+
+	/** Returns the actual length of data. WARNING: this can return 0 if no
+	  * length was specified when setting data of this object, or if the
+	  * length is not known).
+	  *
+	  * @return length of data
+	  */
+	virtual size_t getLength() const = 0;
+
+	/** Returns 'true' if data managed by this object is encoded.
+	  *
+	  * @return true if data is encoded, false otherwise
+	  */
+	virtual bool isEncoded() const = 0;
+
+	/** Returns the encoding used for data (or "binary" if not encoded).
+	  *
+	  * @return encoding used for data
+	  */
+	virtual const vmime::encoding& getEncoding() const = 0;
+
+	/** Returns 'true' if there is no data set.
+	  *
+	  * @return true if no data is managed by this object, false otherwise
+	  */
+	virtual bool isEmpty() const = 0;
+
+	/** Indicates whether the extract() method can be called multiple times.
+	  *
+	  * @return true if the data can be extracted multiple times, or false
+	  * if not (ie. streamed data from socket)
+	  */
+	virtual bool isBuffered() const = 0;
+
+	/** Gives a hint about the kind of data managed by this object.
+	  *
+	  * @param type content media type
+	  */
+	virtual void setContentTypeHint(const mediaType& type) = 0;
+
+	/** Returns a hint about the kind of data managed by this object.
+	  *
+	  * @return type content media type
+	  */
+	virtual const mediaType getContentTypeHint() const = 0;
+};
+
+
+} // vmime
+
+
+#endif // VMIME_CONTENTHANDLER_HPP_INCLUDED