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- //
- // impl/read_until.hpp
- // ~~~~~~~~~~~~~~~~~~~
- //
- // Copyright (c) 2003-2019 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 BOOST_ASIO_IMPL_READ_UNTIL_HPP
- #define BOOST_ASIO_IMPL_READ_UNTIL_HPP
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
- #include <algorithm>
- #include <string>
- #include <vector>
- #include <utility>
- #include <boost/asio/associated_allocator.hpp>
- #include <boost/asio/associated_executor.hpp>
- #include <boost/asio/buffer.hpp>
- #include <boost/asio/buffers_iterator.hpp>
- #include <boost/asio/detail/bind_handler.hpp>
- #include <boost/asio/detail/handler_alloc_helpers.hpp>
- #include <boost/asio/detail/handler_cont_helpers.hpp>
- #include <boost/asio/detail/handler_invoke_helpers.hpp>
- #include <boost/asio/detail/handler_type_requirements.hpp>
- #include <boost/asio/detail/limits.hpp>
- #include <boost/asio/detail/non_const_lvalue.hpp>
- #include <boost/asio/detail/throw_error.hpp>
- #include <boost/asio/detail/push_options.hpp>
- namespace boost {
- namespace asio {
- namespace detail
- {
- // Algorithm that finds a subsequence of equal values in a sequence. Returns
- // (iterator,true) if a full match was found, in which case the iterator
- // points to the beginning of the match. Returns (iterator,false) if a
- // partial match was found at the end of the first sequence, in which case
- // the iterator points to the beginning of the partial match. Returns
- // (last1,false) if no full or partial match was found.
- template <typename Iterator1, typename Iterator2>
- std::pair<Iterator1, bool> partial_search(
- Iterator1 first1, Iterator1 last1, Iterator2 first2, Iterator2 last2)
- {
- for (Iterator1 iter1 = first1; iter1 != last1; ++iter1)
- {
- Iterator1 test_iter1 = iter1;
- Iterator2 test_iter2 = first2;
- for (;; ++test_iter1, ++test_iter2)
- {
- if (test_iter2 == last2)
- return std::make_pair(iter1, true);
- if (test_iter1 == last1)
- {
- if (test_iter2 != first2)
- return std::make_pair(iter1, false);
- else
- break;
- }
- if (*test_iter1 != *test_iter2)
- break;
- }
- }
- return std::make_pair(last1, false);
- }
- } // namespace detail
- #if !defined(BOOST_ASIO_NO_DYNAMIC_BUFFER_V1)
- template <typename SyncReadStream, typename DynamicBuffer_v1>
- inline std::size_t read_until(SyncReadStream& s,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers, char delim,
- typename enable_if<
- is_dynamic_buffer_v1<typename decay<DynamicBuffer_v1>::type>::value
- && !is_dynamic_buffer_v2<typename decay<DynamicBuffer_v1>::type>::value
- >::type*)
- {
- boost::system::error_code ec;
- std::size_t bytes_transferred = read_until(s,
- BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers), delim, ec);
- boost::asio::detail::throw_error(ec, "read_until");
- return bytes_transferred;
- }
- template <typename SyncReadStream, typename DynamicBuffer_v1>
- std::size_t read_until(SyncReadStream& s,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers,
- char delim, boost::system::error_code& ec,
- typename enable_if<
- is_dynamic_buffer_v1<typename decay<DynamicBuffer_v1>::type>::value
- && !is_dynamic_buffer_v2<typename decay<DynamicBuffer_v1>::type>::value
- >::type*)
- {
- typename decay<DynamicBuffer_v1>::type b(
- BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers));
- std::size_t search_position = 0;
- for (;;)
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v1::const_buffers_type buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers = b.data();
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- iterator iter = std::find(start_pos, end, delim);
- if (iter != end)
- {
- // Found a match. We're done.
- ec = boost::system::error_code();
- return iter - begin + 1;
- }
- else
- {
- // No match. Next search can start with the new data.
- search_position = end - begin;
- }
- // Check if buffer is full.
- if (b.size() == b.max_size())
- {
- ec = error::not_found;
- return 0;
- }
- // Need more data.
- std::size_t bytes_to_read = std::min<std::size_t>(
- std::max<std::size_t>(512, b.capacity() - b.size()),
- std::min<std::size_t>(65536, b.max_size() - b.size()));
- b.commit(s.read_some(b.prepare(bytes_to_read), ec));
- if (ec)
- return 0;
- }
- }
- template <typename SyncReadStream, typename DynamicBuffer_v1>
- inline std::size_t read_until(SyncReadStream& s,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers,
- BOOST_ASIO_STRING_VIEW_PARAM delim,
- typename enable_if<
- is_dynamic_buffer_v1<typename decay<DynamicBuffer_v1>::type>::value
- && !is_dynamic_buffer_v2<typename decay<DynamicBuffer_v1>::type>::value
- >::type*)
- {
- boost::system::error_code ec;
- std::size_t bytes_transferred = read_until(s,
- BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers), delim, ec);
- boost::asio::detail::throw_error(ec, "read_until");
- return bytes_transferred;
- }
- template <typename SyncReadStream, typename DynamicBuffer_v1>
- std::size_t read_until(SyncReadStream& s,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers,
- BOOST_ASIO_STRING_VIEW_PARAM delim, boost::system::error_code& ec,
- typename enable_if<
- is_dynamic_buffer_v1<typename decay<DynamicBuffer_v1>::type>::value
- && !is_dynamic_buffer_v2<typename decay<DynamicBuffer_v1>::type>::value
- >::type*)
- {
- typename decay<DynamicBuffer_v1>::type b(
- BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers));
- std::size_t search_position = 0;
- for (;;)
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v1::const_buffers_type buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers = b.data();
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- std::pair<iterator, bool> result = detail::partial_search(
- start_pos, end, delim.begin(), delim.end());
- if (result.first != end)
- {
- if (result.second)
- {
- // Full match. We're done.
- ec = boost::system::error_code();
- return result.first - begin + delim.length();
- }
- else
- {
- // Partial match. Next search needs to start from beginning of match.
- search_position = result.first - begin;
- }
- }
- else
- {
- // No match. Next search can start with the new data.
- search_position = end - begin;
- }
- // Check if buffer is full.
- if (b.size() == b.max_size())
- {
- ec = error::not_found;
- return 0;
- }
- // Need more data.
- std::size_t bytes_to_read = std::min<std::size_t>(
- std::max<std::size_t>(512, b.capacity() - b.size()),
- std::min<std::size_t>(65536, b.max_size() - b.size()));
- b.commit(s.read_some(b.prepare(bytes_to_read), ec));
- if (ec)
- return 0;
- }
- }
- #if !defined(BOOST_ASIO_NO_EXTENSIONS)
- #if defined(BOOST_ASIO_HAS_BOOST_REGEX)
- template <typename SyncReadStream, typename DynamicBuffer_v1>
- inline std::size_t read_until(SyncReadStream& s,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers,
- const boost::regex& expr,
- typename enable_if<
- is_dynamic_buffer_v1<typename decay<DynamicBuffer_v1>::type>::value
- && !is_dynamic_buffer_v2<typename decay<DynamicBuffer_v1>::type>::value
- >::type*)
- {
- boost::system::error_code ec;
- std::size_t bytes_transferred = read_until(s,
- BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers), expr, ec);
- boost::asio::detail::throw_error(ec, "read_until");
- return bytes_transferred;
- }
- template <typename SyncReadStream, typename DynamicBuffer_v1>
- std::size_t read_until(SyncReadStream& s,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers,
- const boost::regex& expr, boost::system::error_code& ec,
- typename enable_if<
- is_dynamic_buffer_v1<typename decay<DynamicBuffer_v1>::type>::value
- && !is_dynamic_buffer_v2<typename decay<DynamicBuffer_v1>::type>::value
- >::type*)
- {
- typename decay<DynamicBuffer_v1>::type b(
- BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers));
- std::size_t search_position = 0;
- for (;;)
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v1::const_buffers_type buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers = b.data();
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- boost::match_results<iterator,
- typename std::vector<boost::sub_match<iterator> >::allocator_type>
- match_results;
- if (regex_search(start_pos, end, match_results, expr,
- boost::match_default | boost::match_partial))
- {
- if (match_results[0].matched)
- {
- // Full match. We're done.
- ec = boost::system::error_code();
- return match_results[0].second - begin;
- }
- else
- {
- // Partial match. Next search needs to start from beginning of match.
- search_position = match_results[0].first - begin;
- }
- }
- else
- {
- // No match. Next search can start with the new data.
- search_position = end - begin;
- }
- // Check if buffer is full.
- if (b.size() == b.max_size())
- {
- ec = error::not_found;
- return 0;
- }
- // Need more data.
- std::size_t bytes_to_read = std::min<std::size_t>(
- std::max<std::size_t>(512, b.capacity() - b.size()),
- std::min<std::size_t>(65536, b.max_size() - b.size()));
- b.commit(s.read_some(b.prepare(bytes_to_read), ec));
- if (ec)
- return 0;
- }
- }
- #endif // defined(BOOST_ASIO_HAS_BOOST_REGEX)
- template <typename SyncReadStream,
- typename DynamicBuffer_v1, typename MatchCondition>
- inline std::size_t read_until(SyncReadStream& s,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers,
- MatchCondition match_condition,
- typename enable_if<
- is_match_condition<MatchCondition>::value
- && is_dynamic_buffer_v1<typename decay<DynamicBuffer_v1>::type>::value
- && !is_dynamic_buffer_v2<typename decay<DynamicBuffer_v1>::type>::value
- >::type*)
- {
- boost::system::error_code ec;
- std::size_t bytes_transferred = read_until(s,
- BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers),
- match_condition, ec);
- boost::asio::detail::throw_error(ec, "read_until");
- return bytes_transferred;
- }
- template <typename SyncReadStream,
- typename DynamicBuffer_v1, typename MatchCondition>
- std::size_t read_until(SyncReadStream& s,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers,
- MatchCondition match_condition, boost::system::error_code& ec,
- typename enable_if<
- is_match_condition<MatchCondition>::value
- && is_dynamic_buffer_v1<typename decay<DynamicBuffer_v1>::type>::value
- && !is_dynamic_buffer_v2<typename decay<DynamicBuffer_v1>::type>::value
- >::type*)
- {
- typename decay<DynamicBuffer_v1>::type b(
- BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers));
- std::size_t search_position = 0;
- for (;;)
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v1::const_buffers_type buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers = b.data();
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- std::pair<iterator, bool> result = match_condition(start_pos, end);
- if (result.second)
- {
- // Full match. We're done.
- ec = boost::system::error_code();
- return result.first - begin;
- }
- else if (result.first != end)
- {
- // Partial match. Next search needs to start from beginning of match.
- search_position = result.first - begin;
- }
- else
- {
- // No match. Next search can start with the new data.
- search_position = end - begin;
- }
- // Check if buffer is full.
- if (b.size() == b.max_size())
- {
- ec = error::not_found;
- return 0;
- }
- // Need more data.
- std::size_t bytes_to_read = std::min<std::size_t>(
- std::max<std::size_t>(512, b.capacity() - b.size()),
- std::min<std::size_t>(65536, b.max_size() - b.size()));
- b.commit(s.read_some(b.prepare(bytes_to_read), ec));
- if (ec)
- return 0;
- }
- }
- #if !defined(BOOST_ASIO_NO_IOSTREAM)
- template <typename SyncReadStream, typename Allocator>
- inline std::size_t read_until(SyncReadStream& s,
- boost::asio::basic_streambuf<Allocator>& b, char delim)
- {
- return read_until(s, basic_streambuf_ref<Allocator>(b), delim);
- }
- template <typename SyncReadStream, typename Allocator>
- inline std::size_t read_until(SyncReadStream& s,
- boost::asio::basic_streambuf<Allocator>& b, char delim,
- boost::system::error_code& ec)
- {
- return read_until(s, basic_streambuf_ref<Allocator>(b), delim, ec);
- }
- template <typename SyncReadStream, typename Allocator>
- inline std::size_t read_until(SyncReadStream& s,
- boost::asio::basic_streambuf<Allocator>& b,
- BOOST_ASIO_STRING_VIEW_PARAM delim)
- {
- return read_until(s, basic_streambuf_ref<Allocator>(b), delim);
- }
- template <typename SyncReadStream, typename Allocator>
- inline std::size_t read_until(SyncReadStream& s,
- boost::asio::basic_streambuf<Allocator>& b,
- BOOST_ASIO_STRING_VIEW_PARAM delim, boost::system::error_code& ec)
- {
- return read_until(s, basic_streambuf_ref<Allocator>(b), delim, ec);
- }
- #if defined(BOOST_ASIO_HAS_BOOST_REGEX)
- template <typename SyncReadStream, typename Allocator>
- inline std::size_t read_until(SyncReadStream& s,
- boost::asio::basic_streambuf<Allocator>& b, const boost::regex& expr)
- {
- return read_until(s, basic_streambuf_ref<Allocator>(b), expr);
- }
- template <typename SyncReadStream, typename Allocator>
- inline std::size_t read_until(SyncReadStream& s,
- boost::asio::basic_streambuf<Allocator>& b, const boost::regex& expr,
- boost::system::error_code& ec)
- {
- return read_until(s, basic_streambuf_ref<Allocator>(b), expr, ec);
- }
- #endif // defined(BOOST_ASIO_HAS_BOOST_REGEX)
- template <typename SyncReadStream, typename Allocator, typename MatchCondition>
- inline std::size_t read_until(SyncReadStream& s,
- boost::asio::basic_streambuf<Allocator>& b, MatchCondition match_condition,
- typename enable_if<is_match_condition<MatchCondition>::value>::type*)
- {
- return read_until(s, basic_streambuf_ref<Allocator>(b), match_condition);
- }
- template <typename SyncReadStream, typename Allocator, typename MatchCondition>
- inline std::size_t read_until(SyncReadStream& s,
- boost::asio::basic_streambuf<Allocator>& b,
- MatchCondition match_condition, boost::system::error_code& ec,
- typename enable_if<is_match_condition<MatchCondition>::value>::type*)
- {
- return read_until(s, basic_streambuf_ref<Allocator>(b), match_condition, ec);
- }
- #endif // !defined(BOOST_ASIO_NO_IOSTREAM)
- #endif // !defined(BOOST_ASIO_NO_EXTENSIONS)
- #endif // !defined(BOOST_ASIO_NO_DYNAMIC_BUFFER_V1)
- template <typename SyncReadStream, typename DynamicBuffer_v2>
- inline std::size_t read_until(SyncReadStream& s,
- DynamicBuffer_v2 buffers, char delim,
- typename enable_if<
- is_dynamic_buffer_v2<DynamicBuffer_v2>::value
- >::type*)
- {
- boost::system::error_code ec;
- std::size_t bytes_transferred = read_until(s,
- BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(buffers), delim, ec);
- boost::asio::detail::throw_error(ec, "read_until");
- return bytes_transferred;
- }
- template <typename SyncReadStream, typename DynamicBuffer_v2>
- std::size_t read_until(SyncReadStream& s, DynamicBuffer_v2 buffers,
- char delim, boost::system::error_code& ec,
- typename enable_if<
- is_dynamic_buffer_v2<DynamicBuffer_v2>::value
- >::type*)
- {
- DynamicBuffer_v2& b = buffers;
- std::size_t search_position = 0;
- for (;;)
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v2::const_buffers_type buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers =
- const_cast<const DynamicBuffer_v2&>(b).data(0, b.size());
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- iterator iter = std::find(start_pos, end, delim);
- if (iter != end)
- {
- // Found a match. We're done.
- ec = boost::system::error_code();
- return iter - begin + 1;
- }
- else
- {
- // No match. Next search can start with the new data.
- search_position = end - begin;
- }
- // Check if buffer is full.
- if (b.size() == b.max_size())
- {
- ec = error::not_found;
- return 0;
- }
- // Need more data.
- std::size_t bytes_to_read = std::min<std::size_t>(
- std::max<std::size_t>(512, b.capacity() - b.size()),
- std::min<std::size_t>(65536, b.max_size() - b.size()));
- std::size_t pos = b.size();
- b.grow(bytes_to_read);
- std::size_t bytes_transferred = s.read_some(b.data(pos, bytes_to_read), ec);
- b.shrink(bytes_to_read - bytes_transferred);
- if (ec)
- return 0;
- }
- }
- template <typename SyncReadStream, typename DynamicBuffer_v2>
- inline std::size_t read_until(SyncReadStream& s,
- DynamicBuffer_v2 buffers, BOOST_ASIO_STRING_VIEW_PARAM delim,
- typename enable_if<
- is_dynamic_buffer_v2<DynamicBuffer_v2>::value
- >::type*)
- {
- boost::system::error_code ec;
- std::size_t bytes_transferred = read_until(s,
- BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(buffers), delim, ec);
- boost::asio::detail::throw_error(ec, "read_until");
- return bytes_transferred;
- }
- template <typename SyncReadStream, typename DynamicBuffer_v2>
- std::size_t read_until(SyncReadStream& s, DynamicBuffer_v2 buffers,
- BOOST_ASIO_STRING_VIEW_PARAM delim, boost::system::error_code& ec,
- typename enable_if<
- is_dynamic_buffer_v2<DynamicBuffer_v2>::value
- >::type*)
- {
- DynamicBuffer_v2& b = buffers;
- std::size_t search_position = 0;
- for (;;)
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v2::const_buffers_type buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers =
- const_cast<const DynamicBuffer_v2&>(b).data(0, b.size());
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- std::pair<iterator, bool> result = detail::partial_search(
- start_pos, end, delim.begin(), delim.end());
- if (result.first != end)
- {
- if (result.second)
- {
- // Full match. We're done.
- ec = boost::system::error_code();
- return result.first - begin + delim.length();
- }
- else
- {
- // Partial match. Next search needs to start from beginning of match.
- search_position = result.first - begin;
- }
- }
- else
- {
- // No match. Next search can start with the new data.
- search_position = end - begin;
- }
- // Check if buffer is full.
- if (b.size() == b.max_size())
- {
- ec = error::not_found;
- return 0;
- }
- // Need more data.
- std::size_t bytes_to_read = std::min<std::size_t>(
- std::max<std::size_t>(512, b.capacity() - b.size()),
- std::min<std::size_t>(65536, b.max_size() - b.size()));
- std::size_t pos = b.size();
- b.grow(bytes_to_read);
- std::size_t bytes_transferred = s.read_some(b.data(pos, bytes_to_read), ec);
- b.shrink(bytes_to_read - bytes_transferred);
- if (ec)
- return 0;
- }
- }
- #if !defined(BOOST_ASIO_NO_EXTENSIONS)
- #if defined(BOOST_ASIO_HAS_BOOST_REGEX)
- template <typename SyncReadStream, typename DynamicBuffer_v2>
- inline std::size_t read_until(SyncReadStream& s,
- DynamicBuffer_v2 buffers, const boost::regex& expr,
- typename enable_if<
- is_dynamic_buffer_v2<DynamicBuffer_v2>::value
- >::type*)
- {
- boost::system::error_code ec;
- std::size_t bytes_transferred = read_until(s,
- BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(buffers), expr, ec);
- boost::asio::detail::throw_error(ec, "read_until");
- return bytes_transferred;
- }
- template <typename SyncReadStream, typename DynamicBuffer_v2>
- std::size_t read_until(SyncReadStream& s, DynamicBuffer_v2 buffers,
- const boost::regex& expr, boost::system::error_code& ec,
- typename enable_if<
- is_dynamic_buffer_v2<DynamicBuffer_v2>::value
- >::type*)
- {
- DynamicBuffer_v2& b = buffers;
- std::size_t search_position = 0;
- for (;;)
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v2::const_buffers_type buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers =
- const_cast<const DynamicBuffer_v2&>(b).data(0, b.size());
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- boost::match_results<iterator,
- typename std::vector<boost::sub_match<iterator> >::allocator_type>
- match_results;
- if (regex_search(start_pos, end, match_results, expr,
- boost::match_default | boost::match_partial))
- {
- if (match_results[0].matched)
- {
- // Full match. We're done.
- ec = boost::system::error_code();
- return match_results[0].second - begin;
- }
- else
- {
- // Partial match. Next search needs to start from beginning of match.
- search_position = match_results[0].first - begin;
- }
- }
- else
- {
- // No match. Next search can start with the new data.
- search_position = end - begin;
- }
- // Check if buffer is full.
- if (b.size() == b.max_size())
- {
- ec = error::not_found;
- return 0;
- }
- // Need more data.
- std::size_t bytes_to_read = std::min<std::size_t>(
- std::max<std::size_t>(512, b.capacity() - b.size()),
- std::min<std::size_t>(65536, b.max_size() - b.size()));
- std::size_t pos = b.size();
- b.grow(bytes_to_read);
- std::size_t bytes_transferred = s.read_some(b.data(pos, bytes_to_read), ec);
- b.shrink(bytes_to_read - bytes_transferred);
- if (ec)
- return 0;
- }
- }
- #endif // defined(BOOST_ASIO_HAS_BOOST_REGEX)
- template <typename SyncReadStream,
- typename DynamicBuffer_v2, typename MatchCondition>
- inline std::size_t read_until(SyncReadStream& s,
- DynamicBuffer_v2 buffers, MatchCondition match_condition,
- typename enable_if<
- is_match_condition<MatchCondition>::value
- && is_dynamic_buffer_v2<DynamicBuffer_v2>::value
- >::type*)
- {
- boost::system::error_code ec;
- std::size_t bytes_transferred = read_until(s,
- BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(buffers),
- match_condition, ec);
- boost::asio::detail::throw_error(ec, "read_until");
- return bytes_transferred;
- }
- template <typename SyncReadStream,
- typename DynamicBuffer_v2, typename MatchCondition>
- std::size_t read_until(SyncReadStream& s, DynamicBuffer_v2 buffers,
- MatchCondition match_condition, boost::system::error_code& ec,
- typename enable_if<
- is_match_condition<MatchCondition>::value
- && is_dynamic_buffer_v2<DynamicBuffer_v2>::value
- >::type*)
- {
- DynamicBuffer_v2& b = buffers;
- std::size_t search_position = 0;
- for (;;)
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v2::const_buffers_type buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers =
- const_cast<const DynamicBuffer_v2&>(b).data(0, b.size());
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- std::pair<iterator, bool> result = match_condition(start_pos, end);
- if (result.second)
- {
- // Full match. We're done.
- ec = boost::system::error_code();
- return result.first - begin;
- }
- else if (result.first != end)
- {
- // Partial match. Next search needs to start from beginning of match.
- search_position = result.first - begin;
- }
- else
- {
- // No match. Next search can start with the new data.
- search_position = end - begin;
- }
- // Check if buffer is full.
- if (b.size() == b.max_size())
- {
- ec = error::not_found;
- return 0;
- }
- // Need more data.
- std::size_t bytes_to_read = std::min<std::size_t>(
- std::max<std::size_t>(512, b.capacity() - b.size()),
- std::min<std::size_t>(65536, b.max_size() - b.size()));
- std::size_t pos = b.size();
- b.grow(bytes_to_read);
- std::size_t bytes_transferred = s.read_some(b.data(pos, bytes_to_read), ec);
- b.shrink(bytes_to_read - bytes_transferred);
- if (ec)
- return 0;
- }
- }
- #endif // !defined(BOOST_ASIO_NO_EXTENSIONS)
- #if !defined(BOOST_ASIO_NO_DYNAMIC_BUFFER_V1)
- namespace detail
- {
- template <typename AsyncReadStream,
- typename DynamicBuffer_v1, typename ReadHandler>
- class read_until_delim_op_v1
- {
- public:
- template <typename BufferSequence>
- read_until_delim_op_v1(AsyncReadStream& stream,
- BOOST_ASIO_MOVE_ARG(BufferSequence) buffers,
- char delim, ReadHandler& handler)
- : stream_(stream),
- buffers_(BOOST_ASIO_MOVE_CAST(BufferSequence)(buffers)),
- delim_(delim),
- start_(0),
- search_position_(0),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
- {
- }
- #if defined(BOOST_ASIO_HAS_MOVE)
- read_until_delim_op_v1(const read_until_delim_op_v1& other)
- : stream_(other.stream_),
- buffers_(other.buffers_),
- delim_(other.delim_),
- start_(other.start_),
- search_position_(other.search_position_),
- handler_(other.handler_)
- {
- }
- read_until_delim_op_v1(read_until_delim_op_v1&& other)
- : stream_(other.stream_),
- buffers_(BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(other.buffers_)),
- delim_(other.delim_),
- start_(other.start_),
- search_position_(other.search_position_),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
- {
- }
- #endif // defined(BOOST_ASIO_HAS_MOVE)
- void operator()(const boost::system::error_code& ec,
- std::size_t bytes_transferred, int start = 0)
- {
- const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
- std::size_t bytes_to_read;
- switch (start_ = start)
- {
- case 1:
- for (;;)
- {
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v1::const_buffers_type
- buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers = buffers_.data();
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position_;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- iterator iter = std::find(start_pos, end, delim_);
- if (iter != end)
- {
- // Found a match. We're done.
- search_position_ = iter - begin + 1;
- bytes_to_read = 0;
- }
- // No match yet. Check if buffer is full.
- else if (buffers_.size() == buffers_.max_size())
- {
- search_position_ = not_found;
- bytes_to_read = 0;
- }
- // Need to read some more data.
- else
- {
- // Next search can start with the new data.
- search_position_ = end - begin;
- bytes_to_read = std::min<std::size_t>(
- std::max<std::size_t>(512,
- buffers_.capacity() - buffers_.size()),
- std::min<std::size_t>(65536,
- buffers_.max_size() - buffers_.size()));
- }
- }
- // Check if we're done.
- if (!start && bytes_to_read == 0)
- break;
- // Start a new asynchronous read op_v1eration to obtain more data.
- stream_.async_read_some(buffers_.prepare(bytes_to_read),
- BOOST_ASIO_MOVE_CAST(read_until_delim_op_v1)(*this));
- return; default:
- buffers_.commit(bytes_transferred);
- if (ec || bytes_transferred == 0)
- break;
- }
- const boost::system::error_code result_ec =
- (search_position_ == not_found)
- ? error::not_found : ec;
- const std::size_t result_n =
- (ec || search_position_ == not_found)
- ? 0 : search_position_;
- handler_(result_ec, result_n);
- }
- }
- //private:
- AsyncReadStream& stream_;
- DynamicBuffer_v1 buffers_;
- char delim_;
- int start_;
- std::size_t search_position_;
- ReadHandler handler_;
- };
- template <typename AsyncReadStream,
- typename DynamicBuffer_v1, typename ReadHandler>
- inline void* asio_handler_allocate(std::size_t size,
- read_until_delim_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>* this_handler)
- {
- return boost_asio_handler_alloc_helpers::allocate(
- size, this_handler->handler_);
- }
- template <typename AsyncReadStream,
- typename DynamicBuffer_v1, typename ReadHandler>
- inline void asio_handler_deallocate(void* pointer, std::size_t size,
- read_until_delim_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>* this_handler)
- {
- boost_asio_handler_alloc_helpers::deallocate(
- pointer, size, this_handler->handler_);
- }
- template <typename AsyncReadStream,
- typename DynamicBuffer_v1, typename ReadHandler>
- inline bool asio_handler_is_continuation(
- read_until_delim_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>* this_handler)
- {
- return this_handler->start_ == 0 ? true
- : boost_asio_handler_cont_helpers::is_continuation(
- this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v1, typename ReadHandler>
- inline void asio_handler_invoke(Function& function,
- read_until_delim_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v1, typename ReadHandler>
- inline void asio_handler_invoke(const Function& function,
- read_until_delim_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename AsyncReadStream>
- class initiate_async_read_until_delim_v1
- {
- public:
- typedef typename AsyncReadStream::executor_type executor_type;
- explicit initiate_async_read_until_delim_v1(AsyncReadStream& stream)
- : stream_(stream)
- {
- }
- executor_type get_executor() const BOOST_ASIO_NOEXCEPT
- {
- return stream_.get_executor();
- }
- template <typename ReadHandler, typename DynamicBuffer_v1>
- void operator()(BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers,
- char delim) const
- {
- // If you get an error on the following line it means that your handler
- // does not meet the documented type requirements for a ReadHandler.
- BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
- non_const_lvalue<ReadHandler> handler2(handler);
- read_until_delim_op_v1<AsyncReadStream,
- typename decay<DynamicBuffer_v1>::type,
- typename decay<ReadHandler>::type>(
- stream_, BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers),
- delim, handler2.value)(boost::system::error_code(), 0, 1);
- }
- private:
- AsyncReadStream& stream_;
- };
- } // namespace detail
- #if !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename ReadHandler, typename Allocator>
- struct associated_allocator<
- detail::read_until_delim_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>,
- Allocator>
- {
- typedef typename associated_allocator<ReadHandler, Allocator>::type type;
- static type get(
- const detail::read_until_delim_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>& h,
- const Allocator& a = Allocator()) BOOST_ASIO_NOEXCEPT
- {
- return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
- }
- };
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename ReadHandler, typename Executor>
- struct associated_executor<
- detail::read_until_delim_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>,
- Executor>
- {
- typedef typename associated_executor<ReadHandler, Executor>::type type;
- static type get(
- const detail::read_until_delim_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>& h,
- const Executor& ex = Executor()) BOOST_ASIO_NOEXCEPT
- {
- return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
- }
- };
- #endif // !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
- std::size_t)) ReadHandler>
- BOOST_ASIO_INITFN_AUTO_RESULT_TYPE(ReadHandler,
- void (boost::system::error_code, std::size_t))
- async_read_until(AsyncReadStream& s,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers,
- char delim, BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- typename enable_if<
- is_dynamic_buffer_v1<typename decay<DynamicBuffer_v1>::type>::value
- && !is_dynamic_buffer_v2<typename decay<DynamicBuffer_v1>::type>::value
- >::type*)
- {
- return async_initiate<ReadHandler,
- void (boost::system::error_code, std::size_t)>(
- detail::initiate_async_read_until_delim_v1<AsyncReadStream>(s),
- handler, BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers), delim);
- }
- namespace detail
- {
- template <typename AsyncReadStream,
- typename DynamicBuffer_v1, typename ReadHandler>
- class read_until_delim_string_op_v1
- {
- public:
- template <typename BufferSequence>
- read_until_delim_string_op_v1(AsyncReadStream& stream,
- BOOST_ASIO_MOVE_ARG(BufferSequence) buffers,
- const std::string& delim, ReadHandler& handler)
- : stream_(stream),
- buffers_(BOOST_ASIO_MOVE_CAST(BufferSequence)(buffers)),
- delim_(delim),
- start_(0),
- search_position_(0),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
- {
- }
- #if defined(BOOST_ASIO_HAS_MOVE)
- read_until_delim_string_op_v1(const read_until_delim_string_op_v1& other)
- : stream_(other.stream_),
- buffers_(other.buffers_),
- delim_(other.delim_),
- start_(other.start_),
- search_position_(other.search_position_),
- handler_(other.handler_)
- {
- }
- read_until_delim_string_op_v1(read_until_delim_string_op_v1&& other)
- : stream_(other.stream_),
- buffers_(BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(other.buffers_)),
- delim_(BOOST_ASIO_MOVE_CAST(std::string)(other.delim_)),
- start_(other.start_),
- search_position_(other.search_position_),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
- {
- }
- #endif // defined(BOOST_ASIO_HAS_MOVE)
- void operator()(const boost::system::error_code& ec,
- std::size_t bytes_transferred, int start = 0)
- {
- const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
- std::size_t bytes_to_read;
- switch (start_ = start)
- {
- case 1:
- for (;;)
- {
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v1::const_buffers_type
- buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers = buffers_.data();
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position_;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- std::pair<iterator, bool> result = detail::partial_search(
- start_pos, end, delim_.begin(), delim_.end());
- if (result.first != end && result.second)
- {
- // Full match. We're done.
- search_position_ = result.first - begin + delim_.length();
- bytes_to_read = 0;
- }
- // No match yet. Check if buffer is full.
- else if (buffers_.size() == buffers_.max_size())
- {
- search_position_ = not_found;
- bytes_to_read = 0;
- }
- // Need to read some more data.
- else
- {
- if (result.first != end)
- {
- // Partial match. Next search needs to start from beginning of
- // match.
- search_position_ = result.first - begin;
- }
- else
- {
- // Next search can start with the new data.
- search_position_ = end - begin;
- }
- bytes_to_read = std::min<std::size_t>(
- std::max<std::size_t>(512,
- buffers_.capacity() - buffers_.size()),
- std::min<std::size_t>(65536,
- buffers_.max_size() - buffers_.size()));
- }
- }
- // Check if we're done.
- if (!start && bytes_to_read == 0)
- break;
- // Start a new asynchronous read op_v1eration to obtain more data.
- stream_.async_read_some(buffers_.prepare(bytes_to_read),
- BOOST_ASIO_MOVE_CAST(read_until_delim_string_op_v1)(*this));
- return; default:
- buffers_.commit(bytes_transferred);
- if (ec || bytes_transferred == 0)
- break;
- }
- const boost::system::error_code result_ec =
- (search_position_ == not_found)
- ? error::not_found : ec;
- const std::size_t result_n =
- (ec || search_position_ == not_found)
- ? 0 : search_position_;
- handler_(result_ec, result_n);
- }
- }
- //private:
- AsyncReadStream& stream_;
- DynamicBuffer_v1 buffers_;
- std::string delim_;
- int start_;
- std::size_t search_position_;
- ReadHandler handler_;
- };
- template <typename AsyncReadStream,
- typename DynamicBuffer_v1, typename ReadHandler>
- inline void* asio_handler_allocate(std::size_t size,
- read_until_delim_string_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>* this_handler)
- {
- return boost_asio_handler_alloc_helpers::allocate(
- size, this_handler->handler_);
- }
- template <typename AsyncReadStream,
- typename DynamicBuffer_v1, typename ReadHandler>
- inline void asio_handler_deallocate(void* pointer, std::size_t size,
- read_until_delim_string_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>* this_handler)
- {
- boost_asio_handler_alloc_helpers::deallocate(
- pointer, size, this_handler->handler_);
- }
- template <typename AsyncReadStream,
- typename DynamicBuffer_v1, typename ReadHandler>
- inline bool asio_handler_is_continuation(
- read_until_delim_string_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>* this_handler)
- {
- return this_handler->start_ == 0 ? true
- : boost_asio_handler_cont_helpers::is_continuation(
- this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v1, typename ReadHandler>
- inline void asio_handler_invoke(Function& function,
- read_until_delim_string_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v1, typename ReadHandler>
- inline void asio_handler_invoke(const Function& function,
- read_until_delim_string_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename AsyncReadStream>
- class initiate_async_read_until_delim_string_v1
- {
- public:
- typedef typename AsyncReadStream::executor_type executor_type;
- explicit initiate_async_read_until_delim_string_v1(AsyncReadStream& stream)
- : stream_(stream)
- {
- }
- executor_type get_executor() const BOOST_ASIO_NOEXCEPT
- {
- return stream_.get_executor();
- }
- template <typename ReadHandler, typename DynamicBuffer_v1>
- void operator()(BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers,
- const std::string& delim) const
- {
- // If you get an error on the following line it means that your handler
- // does not meet the documented type requirements for a ReadHandler.
- BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
- non_const_lvalue<ReadHandler> handler2(handler);
- read_until_delim_string_op_v1<AsyncReadStream,
- typename decay<DynamicBuffer_v1>::type,
- typename decay<ReadHandler>::type>(
- stream_, BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers),
- delim, handler2.value)(boost::system::error_code(), 0, 1);
- }
- private:
- AsyncReadStream& stream_;
- };
- } // namespace detail
- #if !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename ReadHandler, typename Allocator>
- struct associated_allocator<
- detail::read_until_delim_string_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>,
- Allocator>
- {
- typedef typename associated_allocator<ReadHandler, Allocator>::type type;
- static type get(
- const detail::read_until_delim_string_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>& h,
- const Allocator& a = Allocator()) BOOST_ASIO_NOEXCEPT
- {
- return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
- }
- };
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename ReadHandler, typename Executor>
- struct associated_executor<
- detail::read_until_delim_string_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>,
- Executor>
- {
- typedef typename associated_executor<ReadHandler, Executor>::type type;
- static type get(
- const detail::read_until_delim_string_op_v1<AsyncReadStream,
- DynamicBuffer_v1, ReadHandler>& h,
- const Executor& ex = Executor()) BOOST_ASIO_NOEXCEPT
- {
- return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
- }
- };
- #endif // !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
- std::size_t)) ReadHandler>
- BOOST_ASIO_INITFN_AUTO_RESULT_TYPE(ReadHandler,
- void (boost::system::error_code, std::size_t))
- async_read_until(AsyncReadStream& s,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers,
- BOOST_ASIO_STRING_VIEW_PARAM delim,
- BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- typename enable_if<
- is_dynamic_buffer_v1<typename decay<DynamicBuffer_v1>::type>::value
- && !is_dynamic_buffer_v2<typename decay<DynamicBuffer_v1>::type>::value
- >::type*)
- {
- return async_initiate<ReadHandler,
- void (boost::system::error_code, std::size_t)>(
- detail::initiate_async_read_until_delim_string_v1<AsyncReadStream>(s),
- handler, BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers),
- static_cast<std::string>(delim));
- }
- #if !defined(BOOST_ASIO_NO_EXTENSIONS)
- #if defined(BOOST_ASIO_HAS_BOOST_REGEX)
- namespace detail
- {
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename RegEx, typename ReadHandler>
- class read_until_expr_op_v1
- {
- public:
- template <typename BufferSequence>
- read_until_expr_op_v1(AsyncReadStream& stream,
- BOOST_ASIO_MOVE_ARG(BufferSequence) buffers,
- const boost::regex& expr, ReadHandler& handler)
- : stream_(stream),
- buffers_(BOOST_ASIO_MOVE_CAST(BufferSequence)(buffers)),
- expr_(expr),
- start_(0),
- search_position_(0),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
- {
- }
- #if defined(BOOST_ASIO_HAS_MOVE)
- read_until_expr_op_v1(const read_until_expr_op_v1& other)
- : stream_(other.stream_),
- buffers_(other.buffers_),
- expr_(other.expr_),
- start_(other.start_),
- search_position_(other.search_position_),
- handler_(other.handler_)
- {
- }
- read_until_expr_op_v1(read_until_expr_op_v1&& other)
- : stream_(other.stream_),
- buffers_(BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(other.buffers_)),
- expr_(other.expr_),
- start_(other.start_),
- search_position_(other.search_position_),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
- {
- }
- #endif // defined(BOOST_ASIO_HAS_MOVE)
- void operator()(const boost::system::error_code& ec,
- std::size_t bytes_transferred, int start = 0)
- {
- const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
- std::size_t bytes_to_read;
- switch (start_ = start)
- {
- case 1:
- for (;;)
- {
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v1::const_buffers_type
- buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers = buffers_.data();
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position_;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- boost::match_results<iterator,
- typename std::vector<boost::sub_match<iterator> >::allocator_type>
- match_results;
- bool match = regex_search(start_pos, end, match_results, expr_,
- boost::match_default | boost::match_partial);
- if (match && match_results[0].matched)
- {
- // Full match. We're done.
- search_position_ = match_results[0].second - begin;
- bytes_to_read = 0;
- }
- // No match yet. Check if buffer is full.
- else if (buffers_.size() == buffers_.max_size())
- {
- search_position_ = not_found;
- bytes_to_read = 0;
- }
- // Need to read some more data.
- else
- {
- if (match)
- {
- // Partial match. Next search needs to start from beginning of
- // match.
- search_position_ = match_results[0].first - begin;
- }
- else
- {
- // Next search can start with the new data.
- search_position_ = end - begin;
- }
- bytes_to_read = std::min<std::size_t>(
- std::max<std::size_t>(512,
- buffers_.capacity() - buffers_.size()),
- std::min<std::size_t>(65536,
- buffers_.max_size() - buffers_.size()));
- }
- }
- // Check if we're done.
- if (!start && bytes_to_read == 0)
- break;
- // Start a new asynchronous read op_v1eration to obtain more data.
- stream_.async_read_some(buffers_.prepare(bytes_to_read),
- BOOST_ASIO_MOVE_CAST(read_until_expr_op_v1)(*this));
- return; default:
- buffers_.commit(bytes_transferred);
- if (ec || bytes_transferred == 0)
- break;
- }
- const boost::system::error_code result_ec =
- (search_position_ == not_found)
- ? error::not_found : ec;
- const std::size_t result_n =
- (ec || search_position_ == not_found)
- ? 0 : search_position_;
- handler_(result_ec, result_n);
- }
- }
- //private:
- AsyncReadStream& stream_;
- DynamicBuffer_v1 buffers_;
- RegEx expr_;
- int start_;
- std::size_t search_position_;
- ReadHandler handler_;
- };
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename RegEx, typename ReadHandler>
- inline void* asio_handler_allocate(std::size_t size,
- read_until_expr_op_v1<AsyncReadStream,
- DynamicBuffer_v1, RegEx, ReadHandler>* this_handler)
- {
- return boost_asio_handler_alloc_helpers::allocate(
- size, this_handler->handler_);
- }
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename RegEx, typename ReadHandler>
- inline void asio_handler_deallocate(void* pointer, std::size_t size,
- read_until_expr_op_v1<AsyncReadStream,
- DynamicBuffer_v1, RegEx, ReadHandler>* this_handler)
- {
- boost_asio_handler_alloc_helpers::deallocate(
- pointer, size, this_handler->handler_);
- }
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename RegEx, typename ReadHandler>
- inline bool asio_handler_is_continuation(
- read_until_expr_op_v1<AsyncReadStream,
- DynamicBuffer_v1, RegEx, ReadHandler>* this_handler)
- {
- return this_handler->start_ == 0 ? true
- : boost_asio_handler_cont_helpers::is_continuation(
- this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v1, typename RegEx, typename ReadHandler>
- inline void asio_handler_invoke(Function& function,
- read_until_expr_op_v1<AsyncReadStream,
- DynamicBuffer_v1, RegEx, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v1, typename RegEx, typename ReadHandler>
- inline void asio_handler_invoke(const Function& function,
- read_until_expr_op_v1<AsyncReadStream,
- DynamicBuffer_v1, RegEx, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename AsyncReadStream>
- class initiate_async_read_until_expr_v1
- {
- public:
- typedef typename AsyncReadStream::executor_type executor_type;
- explicit initiate_async_read_until_expr_v1(AsyncReadStream& stream)
- : stream_(stream)
- {
- }
- executor_type get_executor() const BOOST_ASIO_NOEXCEPT
- {
- return stream_.get_executor();
- }
- template <typename ReadHandler, typename DynamicBuffer_v1, typename RegEx>
- void operator()(BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers, const RegEx& expr) const
- {
- // If you get an error on the following line it means that your handler
- // does not meet the documented type requirements for a ReadHandler.
- BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
- non_const_lvalue<ReadHandler> handler2(handler);
- read_until_expr_op_v1<AsyncReadStream,
- typename decay<DynamicBuffer_v1>::type,
- RegEx, typename decay<ReadHandler>::type>(
- stream_, BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers),
- expr, handler2.value)(boost::system::error_code(), 0, 1);
- }
- private:
- AsyncReadStream& stream_;
- };
- } // namespace detail
- #if !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename RegEx, typename ReadHandler, typename Allocator>
- struct associated_allocator<
- detail::read_until_expr_op_v1<AsyncReadStream,
- DynamicBuffer_v1, RegEx, ReadHandler>,
- Allocator>
- {
- typedef typename associated_allocator<ReadHandler, Allocator>::type type;
- static type get(
- const detail::read_until_expr_op_v1<AsyncReadStream,
- DynamicBuffer_v1, RegEx, ReadHandler>& h,
- const Allocator& a = Allocator()) BOOST_ASIO_NOEXCEPT
- {
- return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
- }
- };
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename RegEx, typename ReadHandler, typename Executor>
- struct associated_executor<
- detail::read_until_expr_op_v1<AsyncReadStream,
- DynamicBuffer_v1, RegEx, ReadHandler>,
- Executor>
- {
- typedef typename associated_executor<ReadHandler, Executor>::type type;
- static type get(
- const detail::read_until_expr_op_v1<AsyncReadStream,
- DynamicBuffer_v1, RegEx, ReadHandler>& h,
- const Executor& ex = Executor()) BOOST_ASIO_NOEXCEPT
- {
- return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
- }
- };
- #endif // !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
- std::size_t)) ReadHandler>
- BOOST_ASIO_INITFN_AUTO_RESULT_TYPE(ReadHandler,
- void (boost::system::error_code, std::size_t))
- async_read_until(AsyncReadStream& s,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers,
- const boost::regex& expr,
- BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- typename enable_if<
- is_dynamic_buffer_v1<typename decay<DynamicBuffer_v1>::type>::value
- && !is_dynamic_buffer_v2<typename decay<DynamicBuffer_v1>::type>::value
- >::type*)
- {
- return async_initiate<ReadHandler,
- void (boost::system::error_code, std::size_t)>(
- detail::initiate_async_read_until_expr_v1<AsyncReadStream>(s),
- handler, BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers), expr);
- }
- #endif // defined(BOOST_ASIO_HAS_BOOST_REGEX)
- namespace detail
- {
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename MatchCondition, typename ReadHandler>
- class read_until_match_op_v1
- {
- public:
- template <typename BufferSequence>
- read_until_match_op_v1(AsyncReadStream& stream,
- BOOST_ASIO_MOVE_ARG(BufferSequence) buffers,
- MatchCondition match_condition, ReadHandler& handler)
- : stream_(stream),
- buffers_(BOOST_ASIO_MOVE_CAST(BufferSequence)(buffers)),
- match_condition_(match_condition),
- start_(0),
- search_position_(0),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
- {
- }
- #if defined(BOOST_ASIO_HAS_MOVE)
- read_until_match_op_v1(const read_until_match_op_v1& other)
- : stream_(other.stream_),
- buffers_(other.buffers_),
- match_condition_(other.match_condition_),
- start_(other.start_),
- search_position_(other.search_position_),
- handler_(other.handler_)
- {
- }
- read_until_match_op_v1(read_until_match_op_v1&& other)
- : stream_(other.stream_),
- buffers_(BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(other.buffers_)),
- match_condition_(other.match_condition_),
- start_(other.start_),
- search_position_(other.search_position_),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
- {
- }
- #endif // defined(BOOST_ASIO_HAS_MOVE)
- void operator()(const boost::system::error_code& ec,
- std::size_t bytes_transferred, int start = 0)
- {
- const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
- std::size_t bytes_to_read;
- switch (start_ = start)
- {
- case 1:
- for (;;)
- {
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v1::const_buffers_type
- buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers = buffers_.data();
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position_;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- std::pair<iterator, bool> result = match_condition_(start_pos, end);
- if (result.second)
- {
- // Full match. We're done.
- search_position_ = result.first - begin;
- bytes_to_read = 0;
- }
- // No match yet. Check if buffer is full.
- else if (buffers_.size() == buffers_.max_size())
- {
- search_position_ = not_found;
- bytes_to_read = 0;
- }
- // Need to read some more data.
- else
- {
- if (result.first != end)
- {
- // Partial match. Next search needs to start from beginning of
- // match.
- search_position_ = result.first - begin;
- }
- else
- {
- // Next search can start with the new data.
- search_position_ = end - begin;
- }
- bytes_to_read = std::min<std::size_t>(
- std::max<std::size_t>(512,
- buffers_.capacity() - buffers_.size()),
- std::min<std::size_t>(65536,
- buffers_.max_size() - buffers_.size()));
- }
- }
- // Check if we're done.
- if (!start && bytes_to_read == 0)
- break;
- // Start a new asynchronous read op_v1eration to obtain more data.
- stream_.async_read_some(buffers_.prepare(bytes_to_read),
- BOOST_ASIO_MOVE_CAST(read_until_match_op_v1)(*this));
- return; default:
- buffers_.commit(bytes_transferred);
- if (ec || bytes_transferred == 0)
- break;
- }
- const boost::system::error_code result_ec =
- (search_position_ == not_found)
- ? error::not_found : ec;
- const std::size_t result_n =
- (ec || search_position_ == not_found)
- ? 0 : search_position_;
- handler_(result_ec, result_n);
- }
- }
- //private:
- AsyncReadStream& stream_;
- DynamicBuffer_v1 buffers_;
- MatchCondition match_condition_;
- int start_;
- std::size_t search_position_;
- ReadHandler handler_;
- };
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename MatchCondition, typename ReadHandler>
- inline void* asio_handler_allocate(std::size_t size,
- read_until_match_op_v1<AsyncReadStream, DynamicBuffer_v1,
- MatchCondition, ReadHandler>* this_handler)
- {
- return boost_asio_handler_alloc_helpers::allocate(
- size, this_handler->handler_);
- }
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename MatchCondition, typename ReadHandler>
- inline void asio_handler_deallocate(void* pointer, std::size_t size,
- read_until_match_op_v1<AsyncReadStream, DynamicBuffer_v1,
- MatchCondition, ReadHandler>* this_handler)
- {
- boost_asio_handler_alloc_helpers::deallocate(
- pointer, size, this_handler->handler_);
- }
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename MatchCondition, typename ReadHandler>
- inline bool asio_handler_is_continuation(
- read_until_match_op_v1<AsyncReadStream, DynamicBuffer_v1,
- MatchCondition, ReadHandler>* this_handler)
- {
- return this_handler->start_ == 0 ? true
- : boost_asio_handler_cont_helpers::is_continuation(
- this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v1, typename MatchCondition,
- typename ReadHandler>
- inline void asio_handler_invoke(Function& function,
- read_until_match_op_v1<AsyncReadStream, DynamicBuffer_v1,
- MatchCondition, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v1, typename MatchCondition,
- typename ReadHandler>
- inline void asio_handler_invoke(const Function& function,
- read_until_match_op_v1<AsyncReadStream, DynamicBuffer_v1,
- MatchCondition, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename AsyncReadStream>
- class initiate_async_read_until_match_v1
- {
- public:
- typedef typename AsyncReadStream::executor_type executor_type;
- explicit initiate_async_read_until_match_v1(AsyncReadStream& stream)
- : stream_(stream)
- {
- }
- executor_type get_executor() const BOOST_ASIO_NOEXCEPT
- {
- return stream_.get_executor();
- }
- template <typename ReadHandler,
- typename DynamicBuffer_v1, typename MatchCondition>
- void operator()(BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers,
- MatchCondition match_condition) const
- {
- // If you get an error on the following line it means that your handler
- // does not meet the documented type requirements for a ReadHandler.
- BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
- non_const_lvalue<ReadHandler> handler2(handler);
- read_until_match_op_v1<AsyncReadStream,
- typename decay<DynamicBuffer_v1>::type,
- MatchCondition, typename decay<ReadHandler>::type>(
- stream_, BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers),
- match_condition, handler2.value)(boost::system::error_code(), 0, 1);
- }
- private:
- AsyncReadStream& stream_;
- };
- } // namespace detail
- #if !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename MatchCondition, typename ReadHandler, typename Allocator>
- struct associated_allocator<
- detail::read_until_match_op_v1<AsyncReadStream,
- DynamicBuffer_v1, MatchCondition, ReadHandler>,
- Allocator>
- {
- typedef typename associated_allocator<ReadHandler, Allocator>::type type;
- static type get(
- const detail::read_until_match_op_v1<AsyncReadStream,
- DynamicBuffer_v1, MatchCondition, ReadHandler>& h,
- const Allocator& a = Allocator()) BOOST_ASIO_NOEXCEPT
- {
- return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
- }
- };
- template <typename AsyncReadStream, typename DynamicBuffer_v1,
- typename MatchCondition, typename ReadHandler, typename Executor>
- struct associated_executor<
- detail::read_until_match_op_v1<AsyncReadStream,
- DynamicBuffer_v1, MatchCondition, ReadHandler>,
- Executor>
- {
- typedef typename associated_executor<ReadHandler, Executor>::type type;
- static type get(
- const detail::read_until_match_op_v1<AsyncReadStream,
- DynamicBuffer_v1, MatchCondition, ReadHandler>& h,
- const Executor& ex = Executor()) BOOST_ASIO_NOEXCEPT
- {
- return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
- }
- };
- #endif // !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream,
- typename DynamicBuffer_v1, typename MatchCondition,
- BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
- std::size_t)) ReadHandler>
- BOOST_ASIO_INITFN_AUTO_RESULT_TYPE(ReadHandler,
- void (boost::system::error_code, std::size_t))
- async_read_until(AsyncReadStream& s,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v1) buffers,
- MatchCondition match_condition, BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- typename enable_if<
- is_match_condition<MatchCondition>::value
- && is_dynamic_buffer_v1<typename decay<DynamicBuffer_v1>::type>::value
- && !is_dynamic_buffer_v2<typename decay<DynamicBuffer_v1>::type>::value
- >::type*)
- {
- return async_initiate<ReadHandler,
- void (boost::system::error_code, std::size_t)>(
- detail::initiate_async_read_until_match_v1<AsyncReadStream>(s), handler,
- BOOST_ASIO_MOVE_CAST(DynamicBuffer_v1)(buffers), match_condition);
- }
- #if !defined(BOOST_ASIO_NO_IOSTREAM)
- template <typename AsyncReadStream, typename Allocator,
- BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
- std::size_t)) ReadHandler>
- inline BOOST_ASIO_INITFN_AUTO_RESULT_TYPE(ReadHandler,
- void (boost::system::error_code, std::size_t))
- async_read_until(AsyncReadStream& s,
- boost::asio::basic_streambuf<Allocator>& b,
- char delim, BOOST_ASIO_MOVE_ARG(ReadHandler) handler)
- {
- return async_read_until(s, basic_streambuf_ref<Allocator>(b),
- delim, BOOST_ASIO_MOVE_CAST(ReadHandler)(handler));
- }
- template <typename AsyncReadStream, typename Allocator,
- BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
- std::size_t)) ReadHandler>
- inline BOOST_ASIO_INITFN_AUTO_RESULT_TYPE(ReadHandler,
- void (boost::system::error_code, std::size_t))
- async_read_until(AsyncReadStream& s,
- boost::asio::basic_streambuf<Allocator>& b,
- BOOST_ASIO_STRING_VIEW_PARAM delim,
- BOOST_ASIO_MOVE_ARG(ReadHandler) handler)
- {
- return async_read_until(s, basic_streambuf_ref<Allocator>(b),
- delim, BOOST_ASIO_MOVE_CAST(ReadHandler)(handler));
- }
- #if defined(BOOST_ASIO_HAS_BOOST_REGEX)
- template <typename AsyncReadStream, typename Allocator,
- BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
- std::size_t)) ReadHandler>
- inline BOOST_ASIO_INITFN_AUTO_RESULT_TYPE(ReadHandler,
- void (boost::system::error_code, std::size_t))
- async_read_until(AsyncReadStream& s,
- boost::asio::basic_streambuf<Allocator>& b, const boost::regex& expr,
- BOOST_ASIO_MOVE_ARG(ReadHandler) handler)
- {
- return async_read_until(s, basic_streambuf_ref<Allocator>(b),
- expr, BOOST_ASIO_MOVE_CAST(ReadHandler)(handler));
- }
- #endif // defined(BOOST_ASIO_HAS_BOOST_REGEX)
- template <typename AsyncReadStream, typename Allocator, typename MatchCondition,
- BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
- std::size_t)) ReadHandler>
- inline BOOST_ASIO_INITFN_AUTO_RESULT_TYPE(ReadHandler,
- void (boost::system::error_code, std::size_t))
- async_read_until(AsyncReadStream& s,
- boost::asio::basic_streambuf<Allocator>& b,
- MatchCondition match_condition, BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- typename enable_if<is_match_condition<MatchCondition>::value>::type*)
- {
- return async_read_until(s, basic_streambuf_ref<Allocator>(b),
- match_condition, BOOST_ASIO_MOVE_CAST(ReadHandler)(handler));
- }
- #endif // !defined(BOOST_ASIO_NO_IOSTREAM)
- #endif // !defined(BOOST_ASIO_NO_EXTENSIONS)
- #endif // !defined(BOOST_ASIO_NO_DYNAMIC_BUFFER_V1)
- namespace detail
- {
- template <typename AsyncReadStream,
- typename DynamicBuffer_v2, typename ReadHandler>
- class read_until_delim_op_v2
- {
- public:
- template <typename BufferSequence>
- read_until_delim_op_v2(AsyncReadStream& stream,
- BOOST_ASIO_MOVE_ARG(BufferSequence) buffers,
- char delim, ReadHandler& handler)
- : stream_(stream),
- buffers_(BOOST_ASIO_MOVE_CAST(BufferSequence)(buffers)),
- delim_(delim),
- start_(0),
- search_position_(0),
- bytes_to_read_(0),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
- {
- }
- #if defined(BOOST_ASIO_HAS_MOVE)
- read_until_delim_op_v2(const read_until_delim_op_v2& other)
- : stream_(other.stream_),
- buffers_(other.buffers_),
- delim_(other.delim_),
- start_(other.start_),
- search_position_(other.search_position_),
- bytes_to_read_(other.bytes_to_read_),
- handler_(other.handler_)
- {
- }
- read_until_delim_op_v2(read_until_delim_op_v2&& other)
- : stream_(other.stream_),
- buffers_(BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(other.buffers_)),
- delim_(other.delim_),
- start_(other.start_),
- search_position_(other.search_position_),
- bytes_to_read_(other.bytes_to_read_),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
- {
- }
- #endif // defined(BOOST_ASIO_HAS_MOVE)
- void operator()(const boost::system::error_code& ec,
- std::size_t bytes_transferred, int start = 0)
- {
- const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
- std::size_t pos;
- switch (start_ = start)
- {
- case 1:
- for (;;)
- {
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v2::const_buffers_type
- buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers =
- const_cast<const DynamicBuffer_v2&>(buffers_).data(
- 0, buffers_.size());
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position_;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- iterator iter = std::find(start_pos, end, delim_);
- if (iter != end)
- {
- // Found a match. We're done.
- search_position_ = iter - begin + 1;
- bytes_to_read_ = 0;
- }
- // No match yet. Check if buffer is full.
- else if (buffers_.size() == buffers_.max_size())
- {
- search_position_ = not_found;
- bytes_to_read_ = 0;
- }
- // Need to read some more data.
- else
- {
- // Next search can start with the new data.
- search_position_ = end - begin;
- bytes_to_read_ = std::min<std::size_t>(
- std::max<std::size_t>(512,
- buffers_.capacity() - buffers_.size()),
- std::min<std::size_t>(65536,
- buffers_.max_size() - buffers_.size()));
- }
- }
- // Check if we're done.
- if (!start && bytes_to_read_ == 0)
- break;
- // Start a new asynchronous read op_v2eration to obtain more data.
- pos = buffers_.size();
- buffers_.grow(bytes_to_read_);
- stream_.async_read_some(buffers_.data(pos, bytes_to_read_),
- BOOST_ASIO_MOVE_CAST(read_until_delim_op_v2)(*this));
- return; default:
- buffers_.shrink(bytes_to_read_ - bytes_transferred);
- if (ec || bytes_transferred == 0)
- break;
- }
- const boost::system::error_code result_ec =
- (search_position_ == not_found)
- ? error::not_found : ec;
- const std::size_t result_n =
- (ec || search_position_ == not_found)
- ? 0 : search_position_;
- handler_(result_ec, result_n);
- }
- }
- //private:
- AsyncReadStream& stream_;
- DynamicBuffer_v2 buffers_;
- char delim_;
- int start_;
- std::size_t search_position_;
- std::size_t bytes_to_read_;
- ReadHandler handler_;
- };
- template <typename AsyncReadStream,
- typename DynamicBuffer_v2, typename ReadHandler>
- inline void* asio_handler_allocate(std::size_t size,
- read_until_delim_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>* this_handler)
- {
- return boost_asio_handler_alloc_helpers::allocate(
- size, this_handler->handler_);
- }
- template <typename AsyncReadStream,
- typename DynamicBuffer_v2, typename ReadHandler>
- inline void asio_handler_deallocate(void* pointer, std::size_t size,
- read_until_delim_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>* this_handler)
- {
- boost_asio_handler_alloc_helpers::deallocate(
- pointer, size, this_handler->handler_);
- }
- template <typename AsyncReadStream,
- typename DynamicBuffer_v2, typename ReadHandler>
- inline bool asio_handler_is_continuation(
- read_until_delim_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>* this_handler)
- {
- return this_handler->start_ == 0 ? true
- : boost_asio_handler_cont_helpers::is_continuation(
- this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v2, typename ReadHandler>
- inline void asio_handler_invoke(Function& function,
- read_until_delim_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v2, typename ReadHandler>
- inline void asio_handler_invoke(const Function& function,
- read_until_delim_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename AsyncReadStream>
- class initiate_async_read_until_delim_v2
- {
- public:
- typedef typename AsyncReadStream::executor_type executor_type;
- explicit initiate_async_read_until_delim_v2(AsyncReadStream& stream)
- : stream_(stream)
- {
- }
- executor_type get_executor() const BOOST_ASIO_NOEXCEPT
- {
- return stream_.get_executor();
- }
- template <typename ReadHandler, typename DynamicBuffer_v2>
- void operator()(BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v2) buffers, char delim) const
- {
- // If you get an error on the following line it means that your handler
- // does not meet the documented type requirements for a ReadHandler.
- BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
- non_const_lvalue<ReadHandler> handler2(handler);
- read_until_delim_op_v2<AsyncReadStream,
- typename decay<DynamicBuffer_v2>::type,
- typename decay<ReadHandler>::type>(
- stream_, BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(buffers),
- delim, handler2.value)(boost::system::error_code(), 0, 1);
- }
- private:
- AsyncReadStream& stream_;
- };
- } // namespace detail
- #if !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename ReadHandler, typename Allocator>
- struct associated_allocator<
- detail::read_until_delim_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>,
- Allocator>
- {
- typedef typename associated_allocator<ReadHandler, Allocator>::type type;
- static type get(
- const detail::read_until_delim_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>& h,
- const Allocator& a = Allocator()) BOOST_ASIO_NOEXCEPT
- {
- return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
- }
- };
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename ReadHandler, typename Executor>
- struct associated_executor<
- detail::read_until_delim_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>,
- Executor>
- {
- typedef typename associated_executor<ReadHandler, Executor>::type type;
- static type get(
- const detail::read_until_delim_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>& h,
- const Executor& ex = Executor()) BOOST_ASIO_NOEXCEPT
- {
- return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
- }
- };
- #endif // !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
- std::size_t)) ReadHandler>
- BOOST_ASIO_INITFN_AUTO_RESULT_TYPE(ReadHandler,
- void (boost::system::error_code, std::size_t))
- async_read_until(AsyncReadStream& s, DynamicBuffer_v2 buffers,
- char delim, BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- typename enable_if<
- is_dynamic_buffer_v2<DynamicBuffer_v2>::value
- >::type*)
- {
- return async_initiate<ReadHandler,
- void (boost::system::error_code, std::size_t)>(
- detail::initiate_async_read_until_delim_v2<AsyncReadStream>(s),
- handler, BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(buffers), delim);
- }
- namespace detail
- {
- template <typename AsyncReadStream,
- typename DynamicBuffer_v2, typename ReadHandler>
- class read_until_delim_string_op_v2
- {
- public:
- template <typename BufferSequence>
- read_until_delim_string_op_v2(AsyncReadStream& stream,
- BOOST_ASIO_MOVE_ARG(BufferSequence) buffers,
- const std::string& delim, ReadHandler& handler)
- : stream_(stream),
- buffers_(BOOST_ASIO_MOVE_CAST(BufferSequence)(buffers)),
- delim_(delim),
- start_(0),
- search_position_(0),
- bytes_to_read_(0),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
- {
- }
- #if defined(BOOST_ASIO_HAS_MOVE)
- read_until_delim_string_op_v2(const read_until_delim_string_op_v2& other)
- : stream_(other.stream_),
- buffers_(other.buffers_),
- delim_(other.delim_),
- start_(other.start_),
- search_position_(other.search_position_),
- bytes_to_read_(other.bytes_to_read_),
- handler_(other.handler_)
- {
- }
- read_until_delim_string_op_v2(read_until_delim_string_op_v2&& other)
- : stream_(other.stream_),
- buffers_(BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(other.buffers_)),
- delim_(BOOST_ASIO_MOVE_CAST(std::string)(other.delim_)),
- start_(other.start_),
- search_position_(other.search_position_),
- bytes_to_read_(other.bytes_to_read_),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
- {
- }
- #endif // defined(BOOST_ASIO_HAS_MOVE)
- void operator()(const boost::system::error_code& ec,
- std::size_t bytes_transferred, int start = 0)
- {
- const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
- std::size_t pos;
- switch (start_ = start)
- {
- case 1:
- for (;;)
- {
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v2::const_buffers_type
- buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers =
- const_cast<const DynamicBuffer_v2&>(buffers_).data(
- 0, buffers_.size());
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position_;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- std::pair<iterator, bool> result = detail::partial_search(
- start_pos, end, delim_.begin(), delim_.end());
- if (result.first != end && result.second)
- {
- // Full match. We're done.
- search_position_ = result.first - begin + delim_.length();
- bytes_to_read_ = 0;
- }
- // No match yet. Check if buffer is full.
- else if (buffers_.size() == buffers_.max_size())
- {
- search_position_ = not_found;
- bytes_to_read_ = 0;
- }
- // Need to read some more data.
- else
- {
- if (result.first != end)
- {
- // Partial match. Next search needs to start from beginning of
- // match.
- search_position_ = result.first - begin;
- }
- else
- {
- // Next search can start with the new data.
- search_position_ = end - begin;
- }
- bytes_to_read_ = std::min<std::size_t>(
- std::max<std::size_t>(512,
- buffers_.capacity() - buffers_.size()),
- std::min<std::size_t>(65536,
- buffers_.max_size() - buffers_.size()));
- }
- }
- // Check if we're done.
- if (!start && bytes_to_read_ == 0)
- break;
- // Start a new asynchronous read op_v2eration to obtain more data.
- pos = buffers_.size();
- buffers_.grow(bytes_to_read_);
- stream_.async_read_some(buffers_.data(pos, bytes_to_read_),
- BOOST_ASIO_MOVE_CAST(read_until_delim_string_op_v2)(*this));
- return; default:
- buffers_.shrink(bytes_to_read_ - bytes_transferred);
- if (ec || bytes_transferred == 0)
- break;
- }
- const boost::system::error_code result_ec =
- (search_position_ == not_found)
- ? error::not_found : ec;
- const std::size_t result_n =
- (ec || search_position_ == not_found)
- ? 0 : search_position_;
- handler_(result_ec, result_n);
- }
- }
- //private:
- AsyncReadStream& stream_;
- DynamicBuffer_v2 buffers_;
- std::string delim_;
- int start_;
- std::size_t search_position_;
- std::size_t bytes_to_read_;
- ReadHandler handler_;
- };
- template <typename AsyncReadStream,
- typename DynamicBuffer_v2, typename ReadHandler>
- inline void* asio_handler_allocate(std::size_t size,
- read_until_delim_string_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>* this_handler)
- {
- return boost_asio_handler_alloc_helpers::allocate(
- size, this_handler->handler_);
- }
- template <typename AsyncReadStream,
- typename DynamicBuffer_v2, typename ReadHandler>
- inline void asio_handler_deallocate(void* pointer, std::size_t size,
- read_until_delim_string_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>* this_handler)
- {
- boost_asio_handler_alloc_helpers::deallocate(
- pointer, size, this_handler->handler_);
- }
- template <typename AsyncReadStream,
- typename DynamicBuffer_v2, typename ReadHandler>
- inline bool asio_handler_is_continuation(
- read_until_delim_string_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>* this_handler)
- {
- return this_handler->start_ == 0 ? true
- : boost_asio_handler_cont_helpers::is_continuation(
- this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v2, typename ReadHandler>
- inline void asio_handler_invoke(Function& function,
- read_until_delim_string_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v2, typename ReadHandler>
- inline void asio_handler_invoke(const Function& function,
- read_until_delim_string_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename AsyncReadStream>
- class initiate_async_read_until_delim_string_v2
- {
- public:
- typedef typename AsyncReadStream::executor_type executor_type;
- explicit initiate_async_read_until_delim_string_v2(AsyncReadStream& stream)
- : stream_(stream)
- {
- }
- executor_type get_executor() const BOOST_ASIO_NOEXCEPT
- {
- return stream_.get_executor();
- }
- template <typename ReadHandler, typename DynamicBuffer_v2>
- void operator()(BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v2) buffers,
- const std::string& delim) const
- {
- // If you get an error on the following line it means that your handler
- // does not meet the documented type requirements for a ReadHandler.
- BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
- non_const_lvalue<ReadHandler> handler2(handler);
- read_until_delim_string_op_v2<AsyncReadStream,
- typename decay<DynamicBuffer_v2>::type,
- typename decay<ReadHandler>::type>(
- stream_, BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(buffers),
- delim, handler2.value)(boost::system::error_code(), 0, 1);
- }
- private:
- AsyncReadStream& stream_;
- };
- } // namespace detail
- #if !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename ReadHandler, typename Allocator>
- struct associated_allocator<
- detail::read_until_delim_string_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>,
- Allocator>
- {
- typedef typename associated_allocator<ReadHandler, Allocator>::type type;
- static type get(
- const detail::read_until_delim_string_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>& h,
- const Allocator& a = Allocator()) BOOST_ASIO_NOEXCEPT
- {
- return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
- }
- };
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename ReadHandler, typename Executor>
- struct associated_executor<
- detail::read_until_delim_string_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>,
- Executor>
- {
- typedef typename associated_executor<ReadHandler, Executor>::type type;
- static type get(
- const detail::read_until_delim_string_op_v2<AsyncReadStream,
- DynamicBuffer_v2, ReadHandler>& h,
- const Executor& ex = Executor()) BOOST_ASIO_NOEXCEPT
- {
- return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
- }
- };
- #endif // !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream,
- typename DynamicBuffer_v2,
- BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
- std::size_t)) ReadHandler>
- BOOST_ASIO_INITFN_AUTO_RESULT_TYPE(ReadHandler,
- void (boost::system::error_code, std::size_t))
- async_read_until(AsyncReadStream& s,
- DynamicBuffer_v2 buffers, BOOST_ASIO_STRING_VIEW_PARAM delim,
- BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- typename enable_if<
- is_dynamic_buffer_v2<DynamicBuffer_v2>::value
- >::type*)
- {
- return async_initiate<ReadHandler,
- void (boost::system::error_code, std::size_t)>(
- detail::initiate_async_read_until_delim_string_v2<AsyncReadStream>(s),
- handler, BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(buffers),
- static_cast<std::string>(delim));
- }
- #if !defined(BOOST_ASIO_NO_EXTENSIONS)
- #if defined(BOOST_ASIO_HAS_BOOST_REGEX)
- namespace detail
- {
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename RegEx, typename ReadHandler>
- class read_until_expr_op_v2
- {
- public:
- template <typename BufferSequence>
- read_until_expr_op_v2(AsyncReadStream& stream,
- BOOST_ASIO_MOVE_ARG(BufferSequence) buffers,
- const boost::regex& expr, ReadHandler& handler)
- : stream_(stream),
- buffers_(BOOST_ASIO_MOVE_CAST(BufferSequence)(buffers)),
- expr_(expr),
- start_(0),
- search_position_(0),
- bytes_to_read_(0),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
- {
- }
- #if defined(BOOST_ASIO_HAS_MOVE)
- read_until_expr_op_v2(const read_until_expr_op_v2& other)
- : stream_(other.stream_),
- buffers_(other.buffers_),
- expr_(other.expr_),
- start_(other.start_),
- search_position_(other.search_position_),
- bytes_to_read_(other.bytes_to_read_),
- handler_(other.handler_)
- {
- }
- read_until_expr_op_v2(read_until_expr_op_v2&& other)
- : stream_(other.stream_),
- buffers_(BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(other.buffers_)),
- expr_(other.expr_),
- start_(other.start_),
- search_position_(other.search_position_),
- bytes_to_read_(other.bytes_to_read_),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
- {
- }
- #endif // defined(BOOST_ASIO_HAS_MOVE)
- void operator()(const boost::system::error_code& ec,
- std::size_t bytes_transferred, int start = 0)
- {
- const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
- std::size_t pos;
- switch (start_ = start)
- {
- case 1:
- for (;;)
- {
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v2::const_buffers_type
- buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers =
- const_cast<const DynamicBuffer_v2&>(buffers_).data(
- 0, buffers_.size());
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position_;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- boost::match_results<iterator,
- typename std::vector<boost::sub_match<iterator> >::allocator_type>
- match_results;
- bool match = regex_search(start_pos, end, match_results, expr_,
- boost::match_default | boost::match_partial);
- if (match && match_results[0].matched)
- {
- // Full match. We're done.
- search_position_ = match_results[0].second - begin;
- bytes_to_read_ = 0;
- }
- // No match yet. Check if buffer is full.
- else if (buffers_.size() == buffers_.max_size())
- {
- search_position_ = not_found;
- bytes_to_read_ = 0;
- }
- // Need to read some more data.
- else
- {
- if (match)
- {
- // Partial match. Next search needs to start from beginning of
- // match.
- search_position_ = match_results[0].first - begin;
- }
- else
- {
- // Next search can start with the new data.
- search_position_ = end - begin;
- }
- bytes_to_read_ = std::min<std::size_t>(
- std::max<std::size_t>(512,
- buffers_.capacity() - buffers_.size()),
- std::min<std::size_t>(65536,
- buffers_.max_size() - buffers_.size()));
- }
- }
- // Check if we're done.
- if (!start && bytes_to_read_ == 0)
- break;
- // Start a new asynchronous read op_v2eration to obtain more data.
- pos = buffers_.size();
- buffers_.grow(bytes_to_read_);
- stream_.async_read_some(buffers_.data(pos, bytes_to_read_),
- BOOST_ASIO_MOVE_CAST(read_until_expr_op_v2)(*this));
- return; default:
- buffers_.shrink(bytes_to_read_ - bytes_transferred);
- if (ec || bytes_transferred == 0)
- break;
- }
- const boost::system::error_code result_ec =
- (search_position_ == not_found)
- ? error::not_found : ec;
- const std::size_t result_n =
- (ec || search_position_ == not_found)
- ? 0 : search_position_;
- handler_(result_ec, result_n);
- }
- }
- //private:
- AsyncReadStream& stream_;
- DynamicBuffer_v2 buffers_;
- RegEx expr_;
- int start_;
- std::size_t search_position_;
- std::size_t bytes_to_read_;
- ReadHandler handler_;
- };
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename RegEx, typename ReadHandler>
- inline void* asio_handler_allocate(std::size_t size,
- read_until_expr_op_v2<AsyncReadStream,
- DynamicBuffer_v2, RegEx, ReadHandler>* this_handler)
- {
- return boost_asio_handler_alloc_helpers::allocate(
- size, this_handler->handler_);
- }
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename RegEx, typename ReadHandler>
- inline void asio_handler_deallocate(void* pointer, std::size_t size,
- read_until_expr_op_v2<AsyncReadStream,
- DynamicBuffer_v2, RegEx, ReadHandler>* this_handler)
- {
- boost_asio_handler_alloc_helpers::deallocate(
- pointer, size, this_handler->handler_);
- }
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename RegEx, typename ReadHandler>
- inline bool asio_handler_is_continuation(
- read_until_expr_op_v2<AsyncReadStream,
- DynamicBuffer_v2, RegEx, ReadHandler>* this_handler)
- {
- return this_handler->start_ == 0 ? true
- : boost_asio_handler_cont_helpers::is_continuation(
- this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v2, typename RegEx, typename ReadHandler>
- inline void asio_handler_invoke(Function& function,
- read_until_expr_op_v2<AsyncReadStream,
- DynamicBuffer_v2, RegEx, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v2, typename RegEx, typename ReadHandler>
- inline void asio_handler_invoke(const Function& function,
- read_until_expr_op_v2<AsyncReadStream,
- DynamicBuffer_v2, RegEx, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename AsyncReadStream>
- class initiate_async_read_until_expr_v2
- {
- public:
- typedef typename AsyncReadStream::executor_type executor_type;
- explicit initiate_async_read_until_expr_v2(AsyncReadStream& stream)
- : stream_(stream)
- {
- }
- executor_type get_executor() const BOOST_ASIO_NOEXCEPT
- {
- return stream_.get_executor();
- }
- template <typename ReadHandler, typename DynamicBuffer_v2, typename RegEx>
- void operator()(BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v2) buffers,
- const RegEx& expr) const
- {
- // If you get an error on the following line it means that your handler
- // does not meet the documented type requirements for a ReadHandler.
- BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
- non_const_lvalue<ReadHandler> handler2(handler);
- read_until_expr_op_v2<AsyncReadStream,
- typename decay<DynamicBuffer_v2>::type,
- RegEx, typename decay<ReadHandler>::type>(
- stream_, BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(buffers),
- expr, handler2.value)(boost::system::error_code(), 0, 1);
- }
- private:
- AsyncReadStream& stream_;
- };
- } // namespace detail
- #if !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename RegEx, typename ReadHandler, typename Allocator>
- struct associated_allocator<
- detail::read_until_expr_op_v2<AsyncReadStream,
- DynamicBuffer_v2, RegEx, ReadHandler>,
- Allocator>
- {
- typedef typename associated_allocator<ReadHandler, Allocator>::type type;
- static type get(
- const detail::read_until_expr_op_v2<AsyncReadStream,
- DynamicBuffer_v2, RegEx, ReadHandler>& h,
- const Allocator& a = Allocator()) BOOST_ASIO_NOEXCEPT
- {
- return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
- }
- };
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename RegEx, typename ReadHandler, typename Executor>
- struct associated_executor<
- detail::read_until_expr_op_v2<AsyncReadStream,
- DynamicBuffer_v2, RegEx, ReadHandler>,
- Executor>
- {
- typedef typename associated_executor<ReadHandler, Executor>::type type;
- static type get(
- const detail::read_until_expr_op_v2<AsyncReadStream,
- DynamicBuffer_v2, RegEx, ReadHandler>& h,
- const Executor& ex = Executor()) BOOST_ASIO_NOEXCEPT
- {
- return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
- }
- };
- #endif // !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
- std::size_t)) ReadHandler>
- BOOST_ASIO_INITFN_AUTO_RESULT_TYPE(ReadHandler,
- void (boost::system::error_code, std::size_t))
- async_read_until(AsyncReadStream& s, DynamicBuffer_v2 buffers,
- const boost::regex& expr, BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- typename enable_if<
- is_dynamic_buffer_v2<DynamicBuffer_v2>::value
- >::type*)
- {
- return async_initiate<ReadHandler,
- void (boost::system::error_code, std::size_t)>(
- detail::initiate_async_read_until_expr_v2<AsyncReadStream>(s),
- handler, BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(buffers), expr);
- }
- #endif // defined(BOOST_ASIO_HAS_BOOST_REGEX)
- namespace detail
- {
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename MatchCondition, typename ReadHandler>
- class read_until_match_op_v2
- {
- public:
- template <typename BufferSequence>
- read_until_match_op_v2(AsyncReadStream& stream,
- BOOST_ASIO_MOVE_ARG(BufferSequence) buffers,
- MatchCondition match_condition, ReadHandler& handler)
- : stream_(stream),
- buffers_(BOOST_ASIO_MOVE_CAST(BufferSequence)(buffers)),
- match_condition_(match_condition),
- start_(0),
- search_position_(0),
- bytes_to_read_(0),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
- {
- }
- #if defined(BOOST_ASIO_HAS_MOVE)
- read_until_match_op_v2(const read_until_match_op_v2& other)
- : stream_(other.stream_),
- buffers_(other.buffers_),
- match_condition_(other.match_condition_),
- start_(other.start_),
- search_position_(other.search_position_),
- bytes_to_read_(other.bytes_to_read_),
- handler_(other.handler_)
- {
- }
- read_until_match_op_v2(read_until_match_op_v2&& other)
- : stream_(other.stream_),
- buffers_(BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(other.buffers_)),
- match_condition_(other.match_condition_),
- start_(other.start_),
- search_position_(other.search_position_),
- bytes_to_read_(other.bytes_to_read_),
- handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
- {
- }
- #endif // defined(BOOST_ASIO_HAS_MOVE)
- void operator()(const boost::system::error_code& ec,
- std::size_t bytes_transferred, int start = 0)
- {
- const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
- std::size_t pos;
- switch (start_ = start)
- {
- case 1:
- for (;;)
- {
- {
- // Determine the range of the data to be searched.
- typedef typename DynamicBuffer_v2::const_buffers_type
- buffers_type;
- typedef buffers_iterator<buffers_type> iterator;
- buffers_type data_buffers =
- const_cast<const DynamicBuffer_v2&>(buffers_).data(
- 0, buffers_.size());
- iterator begin = iterator::begin(data_buffers);
- iterator start_pos = begin + search_position_;
- iterator end = iterator::end(data_buffers);
- // Look for a match.
- std::pair<iterator, bool> result = match_condition_(start_pos, end);
- if (result.second)
- {
- // Full match. We're done.
- search_position_ = result.first - begin;
- bytes_to_read_ = 0;
- }
- // No match yet. Check if buffer is full.
- else if (buffers_.size() == buffers_.max_size())
- {
- search_position_ = not_found;
- bytes_to_read_ = 0;
- }
- // Need to read some more data.
- else
- {
- if (result.first != end)
- {
- // Partial match. Next search needs to start from beginning of
- // match.
- search_position_ = result.first - begin;
- }
- else
- {
- // Next search can start with the new data.
- search_position_ = end - begin;
- }
- bytes_to_read_ = std::min<std::size_t>(
- std::max<std::size_t>(512,
- buffers_.capacity() - buffers_.size()),
- std::min<std::size_t>(65536,
- buffers_.max_size() - buffers_.size()));
- }
- }
- // Check if we're done.
- if (!start && bytes_to_read_ == 0)
- break;
- // Start a new asynchronous read op_v2eration to obtain more data.
- pos = buffers_.size();
- buffers_.grow(bytes_to_read_);
- stream_.async_read_some(buffers_.data(pos, bytes_to_read_),
- BOOST_ASIO_MOVE_CAST(read_until_match_op_v2)(*this));
- return; default:
- buffers_.shrink(bytes_to_read_ - bytes_transferred);
- if (ec || bytes_transferred == 0)
- break;
- }
- const boost::system::error_code result_ec =
- (search_position_ == not_found)
- ? error::not_found : ec;
- const std::size_t result_n =
- (ec || search_position_ == not_found)
- ? 0 : search_position_;
- handler_(result_ec, result_n);
- }
- }
- //private:
- AsyncReadStream& stream_;
- DynamicBuffer_v2 buffers_;
- MatchCondition match_condition_;
- int start_;
- std::size_t search_position_;
- std::size_t bytes_to_read_;
- ReadHandler handler_;
- };
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename MatchCondition, typename ReadHandler>
- inline void* asio_handler_allocate(std::size_t size,
- read_until_match_op_v2<AsyncReadStream, DynamicBuffer_v2,
- MatchCondition, ReadHandler>* this_handler)
- {
- return boost_asio_handler_alloc_helpers::allocate(
- size, this_handler->handler_);
- }
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename MatchCondition, typename ReadHandler>
- inline void asio_handler_deallocate(void* pointer, std::size_t size,
- read_until_match_op_v2<AsyncReadStream, DynamicBuffer_v2,
- MatchCondition, ReadHandler>* this_handler)
- {
- boost_asio_handler_alloc_helpers::deallocate(
- pointer, size, this_handler->handler_);
- }
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename MatchCondition, typename ReadHandler>
- inline bool asio_handler_is_continuation(
- read_until_match_op_v2<AsyncReadStream, DynamicBuffer_v2,
- MatchCondition, ReadHandler>* this_handler)
- {
- return this_handler->start_ == 0 ? true
- : boost_asio_handler_cont_helpers::is_continuation(
- this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v2, typename MatchCondition,
- typename ReadHandler>
- inline void asio_handler_invoke(Function& function,
- read_until_match_op_v2<AsyncReadStream, DynamicBuffer_v2,
- MatchCondition, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename Function, typename AsyncReadStream,
- typename DynamicBuffer_v2, typename MatchCondition,
- typename ReadHandler>
- inline void asio_handler_invoke(const Function& function,
- read_until_match_op_v2<AsyncReadStream, DynamicBuffer_v2,
- MatchCondition, ReadHandler>* this_handler)
- {
- boost_asio_handler_invoke_helpers::invoke(
- function, this_handler->handler_);
- }
- template <typename AsyncReadStream>
- class initiate_async_read_until_match_v2
- {
- public:
- typedef typename AsyncReadStream::executor_type executor_type;
- explicit initiate_async_read_until_match_v2(AsyncReadStream& stream)
- : stream_(stream)
- {
- }
- executor_type get_executor() const BOOST_ASIO_NOEXCEPT
- {
- return stream_.get_executor();
- }
- template <typename ReadHandler,
- typename DynamicBuffer_v2, typename MatchCondition>
- void operator()(BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- BOOST_ASIO_MOVE_ARG(DynamicBuffer_v2) buffers,
- MatchCondition match_condition) const
- {
- // If you get an error on the following line it means that your handler
- // does not meet the documented type requirements for a ReadHandler.
- BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
- non_const_lvalue<ReadHandler> handler2(handler);
- read_until_match_op_v2<AsyncReadStream,
- typename decay<DynamicBuffer_v2>::type,
- MatchCondition, typename decay<ReadHandler>::type>(
- stream_, BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(buffers),
- match_condition, handler2.value)(boost::system::error_code(), 0, 1);
- }
- private:
- AsyncReadStream& stream_;
- };
- } // namespace detail
- #if !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename MatchCondition, typename ReadHandler, typename Allocator>
- struct associated_allocator<
- detail::read_until_match_op_v2<AsyncReadStream,
- DynamicBuffer_v2, MatchCondition, ReadHandler>,
- Allocator>
- {
- typedef typename associated_allocator<ReadHandler, Allocator>::type type;
- static type get(
- const detail::read_until_match_op_v2<AsyncReadStream,
- DynamicBuffer_v2, MatchCondition, ReadHandler>& h,
- const Allocator& a = Allocator()) BOOST_ASIO_NOEXCEPT
- {
- return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
- }
- };
- template <typename AsyncReadStream, typename DynamicBuffer_v2,
- typename MatchCondition, typename ReadHandler, typename Executor>
- struct associated_executor<
- detail::read_until_match_op_v2<AsyncReadStream,
- DynamicBuffer_v2, MatchCondition, ReadHandler>,
- Executor>
- {
- typedef typename associated_executor<ReadHandler, Executor>::type type;
- static type get(
- const detail::read_until_match_op_v2<AsyncReadStream,
- DynamicBuffer_v2, MatchCondition, ReadHandler>& h,
- const Executor& ex = Executor()) BOOST_ASIO_NOEXCEPT
- {
- return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
- }
- };
- #endif // !defined(GENERATING_DOCUMENTATION)
- template <typename AsyncReadStream,
- typename DynamicBuffer_v2, typename MatchCondition,
- BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
- std::size_t)) ReadHandler>
- BOOST_ASIO_INITFN_AUTO_RESULT_TYPE(ReadHandler,
- void (boost::system::error_code, std::size_t))
- async_read_until(AsyncReadStream& s, DynamicBuffer_v2 buffers,
- MatchCondition match_condition, BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
- typename enable_if<
- is_match_condition<MatchCondition>::value
- && is_dynamic_buffer_v2<DynamicBuffer_v2>::value
- >::type*)
- {
- return async_initiate<ReadHandler,
- void (boost::system::error_code, std::size_t)>(
- detail::initiate_async_read_until_match_v2<AsyncReadStream>(s), handler,
- BOOST_ASIO_MOVE_CAST(DynamicBuffer_v2)(buffers), match_condition);
- }
- #endif // !defined(BOOST_ASIO_NO_EXTENSIONS)
- } // namespace asio
- } // namespace boost
- #include <boost/asio/detail/pop_options.hpp>
- #endif // BOOST_ASIO_IMPL_READ_UNTIL_HPP
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