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authorMatthias P. Braendli <matthias.braendli@mpb.li>2019-10-07 04:52:50 +0200
committerMatthias P. Braendli <matthias.braendli@mpb.li>2019-10-07 04:52:50 +0200
commit0aa6201a490bfabc0ae021ceb9f1fb0f46727c5d (patch)
treea71d934d8151dd43e7c16555fef17fd749c5da70 /lib/asio/detail/buffered_stream_storage.hpp
parent558d74bffd9f069955af52c0b308a1d6169bcff0 (diff)
parent0330221d51421caa110b8c5dcb567cc3d0620eb9 (diff)
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Merge lime output into next branch
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-//
-// detail/buffered_stream_storage.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_BUFFERED_STREAM_STORAGE_HPP
-#define ASIO_DETAIL_BUFFERED_STREAM_STORAGE_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/buffer.hpp"
-#include "asio/detail/assert.hpp"
-#include <cstddef>
-#include <cstring>
-#include <vector>
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-class buffered_stream_storage
-{
-public:
- // The type of the bytes stored in the buffer.
- typedef unsigned char byte_type;
-
- // The type used for offsets into the buffer.
- typedef std::size_t size_type;
-
- // Constructor.
- explicit buffered_stream_storage(std::size_t buffer_capacity)
- : begin_offset_(0),
- end_offset_(0),
- buffer_(buffer_capacity)
- {
- }
-
- /// Clear the buffer.
- void clear()
- {
- begin_offset_ = 0;
- end_offset_ = 0;
- }
-
- // Return a pointer to the beginning of the unread data.
- mutable_buffer data()
- {
- return asio::buffer(buffer_) + begin_offset_;
- }
-
- // Return a pointer to the beginning of the unread data.
- const_buffer data() const
- {
- return asio::buffer(buffer_) + begin_offset_;
- }
-
- // Is there no unread data in the buffer.
- bool empty() const
- {
- return begin_offset_ == end_offset_;
- }
-
- // Return the amount of unread data the is in the buffer.
- size_type size() const
- {
- return end_offset_ - begin_offset_;
- }
-
- // Resize the buffer to the specified length.
- void resize(size_type length)
- {
- ASIO_ASSERT(length <= capacity());
- if (begin_offset_ + length <= capacity())
- {
- end_offset_ = begin_offset_ + length;
- }
- else
- {
- using namespace std; // For memmove.
- memmove(&buffer_[0], &buffer_[0] + begin_offset_, size());
- end_offset_ = length;
- begin_offset_ = 0;
- }
- }
-
- // Return the maximum size for data in the buffer.
- size_type capacity() const
- {
- return buffer_.size();
- }
-
- // Consume multiple bytes from the beginning of the buffer.
- void consume(size_type count)
- {
- ASIO_ASSERT(begin_offset_ + count <= end_offset_);
- begin_offset_ += count;
- if (empty())
- clear();
- }
-
-private:
- // The offset to the beginning of the unread data.
- size_type begin_offset_;
-
- // The offset to the end of the unread data.
- size_type end_offset_;
-
- // The data in the buffer.
- std::vector<byte_type> buffer_;
-};
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_BUFFERED_STREAM_STORAGE_HPP