2 // Copyright 2004--2010, Google Inc.
4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions are met:
7 // 1. Redistributions of source code must retain the above copyright notice,
8 // this list of conditions and the following disclaimer.
9 // 2. Redistributions in binary form must reproduce the above copyright notice,
10 // this list of conditions and the following disclaimer in the documentation
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13 // derived from this software without specific prior written permission.
15 // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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17 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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20 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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26 #ifndef TALK_BASE_MULTIPART_H__
27 #define TALK_BASE_MULTIPART_H__
32 #include "talk/base/sigslot.h"
33 #include "talk/base/stream.h"
37 ///////////////////////////////////////////////////////////////////////////////
38 // MultipartStream - Implements an RFC2046 multipart stream by concatenating
39 // the supplied parts together, and adding the correct boundaries.
40 ///////////////////////////////////////////////////////////////////////////////
42 class MultipartStream : public StreamInterface, public sigslot::has_slots<> {
44 MultipartStream(const std::string& type, const std::string& boundary);
45 virtual ~MultipartStream();
47 void GetContentType(std::string* content_type);
49 // Note: If content_disposition and/or content_type are the empty string,
50 // they will be omitted.
51 bool AddPart(StreamInterface* data_stream,
52 const std::string& content_disposition,
53 const std::string& content_type);
54 bool AddPart(const std::string& data,
55 const std::string& content_disposition,
56 const std::string& content_type);
59 // Calculates the size of a part before actually adding the part.
60 size_t GetPartSize(const std::string& data,
61 const std::string& content_disposition,
62 const std::string& content_type) const;
63 size_t GetEndPartSize() const;
66 virtual StreamState GetState() const;
67 virtual StreamResult Read(void* buffer, size_t buffer_len,
68 size_t* read, int* error);
69 virtual StreamResult Write(const void* data, size_t data_len,
70 size_t* written, int* error);
72 virtual bool SetPosition(size_t position);
73 virtual bool GetPosition(size_t* position) const;
74 virtual bool GetSize(size_t* size) const;
75 virtual bool GetAvailable(size_t* size) const;
78 typedef std::vector<StreamInterface*> PartList;
80 // StreamInterface Slots
81 void OnEvent(StreamInterface* stream, int events, int error);
83 std::string type_, boundary_;
86 size_t current_; // The index into parts_ of the current read position.
87 size_t position_; // The current read position in bytes.
89 DISALLOW_COPY_AND_ASSIGN(MultipartStream);
92 } // namespace talk_base
94 #endif // TALK_BASE_MULTIPART_H__