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// libjingle
// Copyright 2004--2010, Google Inc.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// 3. The name of the author may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef TALK_BASE_MULTIPART_H__
#define TALK_BASE_MULTIPART_H__
#include <string>
#include <vector>
#include "talk/base/sigslot.h"
#include "talk/base/stream.h"
namespace talk_base {
///////////////////////////////////////////////////////////////////////////////
// MultipartStream - Implements an RFC2046 multipart stream by concatenating
// the supplied parts together, and adding the correct boundaries.
///////////////////////////////////////////////////////////////////////////////
class MultipartStream : public StreamInterface, public sigslot::has_slots<> {
public:
MultipartStream(const std::string& type, const std::string& boundary);
virtual ~MultipartStream();
void GetContentType(std::string* content_type);
// Note: If content_disposition and/or content_type are the empty string,
// they will be omitted.
bool AddPart(StreamInterface* data_stream,
const std::string& content_disposition,
const std::string& content_type);
bool AddPart(const std::string& data,
const std::string& content_disposition,
const std::string& content_type);
void EndParts();
// Calculates the size of a part before actually adding the part.
size_t GetPartSize(const std::string& data,
const std::string& content_disposition,
const std::string& content_type) const;
size_t GetEndPartSize() const;
// StreamInterface
virtual StreamState GetState() const;
virtual StreamResult Read(void* buffer, size_t buffer_len,
size_t* read, int* error);
virtual StreamResult Write(const void* data, size_t data_len,
size_t* written, int* error);
virtual void Close();
virtual bool SetPosition(size_t position);
virtual bool GetPosition(size_t* position) const;
virtual bool GetSize(size_t* size) const;
virtual bool GetAvailable(size_t* size) const;
private:
typedef std::vector<StreamInterface*> PartList;
// StreamInterface Slots
void OnEvent(StreamInterface* stream, int events, int error);
std::string type_, boundary_;
PartList parts_;
bool adding_;
size_t current_; // The index into parts_ of the current read position.
size_t position_; // The current read position in bytes.
DISALLOW_COPY_AND_ASSIGN(MultipartStream);
};
} // namespace talk_base
#endif // TALK_BASE_MULTIPART_H__
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