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14b439ce43
This changes the http::message object to no longer contain a body. It modifies the parser to store the body in a separate object, or to pass the body data to a functor. This allows the body to be stored in more flexible ways. For example, in HTTP responses the body can be generated procedurally instead of being required to exist entirely in memory at once.
151 lines
3.4 KiB
C++
151 lines
3.4 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef BEAST_HTTP_BODY_H_INCLUDED
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#define BEAST_HTTP_BODY_H_INCLUDED
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#include <cstdint>
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#include <memory>
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#include <boost/asio/buffer.hpp>
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#include <boost/asio/streambuf.hpp>
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#include <boost/optional.hpp>
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#include <beast/cxx14/memory.h> // <memory>
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#include <string>
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namespace beast {
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namespace http {
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/** Container for the HTTP content-body. */
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class body
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{
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private:
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typedef boost::asio::streambuf buffer_type;
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// Hack: use unique_ptr because streambuf cant be moved
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std::unique_ptr <buffer_type> buf_;
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public:
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typedef buffer_type::const_buffers_type const_buffers_type;
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body();
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body (body&& other);
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body& operator= (body&& other);
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body (body const&) = delete;
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body& operator= (body const&) = delete;
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template <class = void>
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void
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clear();
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void
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write (void const* data, std::size_t bytes);
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template <class ConstBufferSequence>
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void
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write (ConstBufferSequence const& buffers);
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std::size_t
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size() const;
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const_buffers_type
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data() const;
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};
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template <class = void>
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std::string
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to_string (body const& b)
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{
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std::string s;
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auto const& data (b.data());
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auto const n (boost::asio::buffer_size (data));
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s.resize (n);
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boost::asio::buffer_copy (
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boost::asio::buffer (&s[0], n), data);
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return s;
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}
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//------------------------------------------------------------------------------
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inline
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body::body()
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: buf_ (std::make_unique <buffer_type>())
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{
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}
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inline
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body::body (body&& other)
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: buf_ (std::move(other.buf_))
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{
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other.clear();
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}
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inline
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body&
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body::operator= (body&& other)
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{
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buf_ = std::move(other.buf_);
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other.clear();
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return *this;
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}
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template <class>
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void
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body::clear()
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{
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buf_ = std::make_unique <buffer_type>();
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}
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inline
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void
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body::write (void const* data, std::size_t bytes)
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{
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buf_->commit (boost::asio::buffer_copy (buf_->prepare (bytes),
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boost::asio::const_buffers_1 (data, bytes)));
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}
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template <class ConstBufferSequence>
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void
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body::write (ConstBufferSequence const& buffers)
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{
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for (auto const& buffer : buffers)
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write (boost::asio::buffer_cast <void const*> (buffer),
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boost::asio::buffer_size (buffer));
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}
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inline
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std::size_t
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body::size() const
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{
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return buf_->size();
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}
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inline
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auto
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body::data() const
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-> const_buffers_type
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{
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return buf_->data();
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}
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} // http
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} // beast
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#endif
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