boost/asio/impl/read_until.hpp
//
// impl/read_until.hpp
// ~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2023 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/associator.hpp>
#include <boost/asio/buffer.hpp>
#include <boost/asio/buffers_iterator.hpp>
#include <boost/asio/detail/base_from_cancellation_state.hpp>
#include <boost/asio/detail/bind_handler.hpp>
#include <boost/asio/detail/handler_cont_helpers.hpp>
#include <boost/asio/detail/handler_tracking.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,
DynamicBuffer_v1&& buffers, char delim,
constraint_t<
is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
>,
constraint_t<
!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
>)
{
boost::system::error_code ec;
std::size_t bytes_transferred = read_until(s,
static_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,
DynamicBuffer_v1&& buffers,
char delim, boost::system::error_code& ec,
constraint_t<
is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
>,
constraint_t<
!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
>)
{
decay_t<DynamicBuffer_v1> b(
static_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,
DynamicBuffer_v1&& buffers,
BOOST_ASIO_STRING_VIEW_PARAM delim,
constraint_t<
is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
>,
constraint_t<
!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
>)
{
boost::system::error_code ec;
std::size_t bytes_transferred = read_until(s,
static_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,
DynamicBuffer_v1&& buffers,
BOOST_ASIO_STRING_VIEW_PARAM delim, boost::system::error_code& ec,
constraint_t<
is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
>,
constraint_t<
!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
>)
{
decay_t<DynamicBuffer_v1> b(
static_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)
namespace detail {
struct regex_match_flags
{
template <typename T>
operator T() const
{
return T::match_default | T::match_partial;
}
};
} // namespace detail
template <typename SyncReadStream, typename DynamicBuffer_v1, typename Traits>
inline std::size_t read_until(SyncReadStream& s, DynamicBuffer_v1&& buffers,
const boost::basic_regex<char, Traits>& expr,
constraint_t<
is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
>,
constraint_t<
!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
>)
{
boost::system::error_code ec;
std::size_t bytes_transferred = read_until(s,
static_cast<DynamicBuffer_v1&&>(buffers), expr, ec);
boost::asio::detail::throw_error(ec, "read_until");
return bytes_transferred;
}
template <typename SyncReadStream, typename DynamicBuffer_v1, typename Traits>
std::size_t read_until(SyncReadStream& s, DynamicBuffer_v1&& buffers,
const boost::basic_regex<char, Traits>& expr, boost::system::error_code& ec,
constraint_t<
is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
>,
constraint_t<
!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
>)
{
decay_t<DynamicBuffer_v1> b(
static_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, detail::regex_match_flags()))
{
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,
DynamicBuffer_v1&& buffers,
MatchCondition match_condition,
constraint_t<
is_match_condition<MatchCondition>::value
>,
constraint_t<
is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
>,
constraint_t<
!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
>)
{
boost::system::error_code ec;
std::size_t bytes_transferred = read_until(s,
static_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,
DynamicBuffer_v1&& buffers,
MatchCondition match_condition, boost::system::error_code& ec,
constraint_t<
is_match_condition<MatchCondition>::value
>,
constraint_t<
is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
>,
constraint_t<
!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
>)
{
decay_t<DynamicBuffer_v1> b(
static_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, typename Traits>
inline std::size_t read_until(SyncReadStream& s,
boost::asio::basic_streambuf<Allocator>& b,
const boost::basic_regex<char, Traits>& expr)
{
return read_until(s, basic_streambuf_ref<Allocator>(b), expr);
}
template <typename SyncReadStream, typename Allocator, typename Traits>
inline std::size_t read_until(SyncReadStream& s,
boost::asio::basic_streambuf<Allocator>& b,
const boost::basic_regex<char, Traits>& 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,
constraint_t<is_match_condition<MatchCondition>::value>)
{
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,
constraint_t<is_match_condition<MatchCondition>::value>)
{
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,
constraint_t<
is_dynamic_buffer_v2<DynamicBuffer_v2>::value
>)
{
boost::system::error_code ec;
std::size_t bytes_transferred = read_until(s,
static_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,
constraint_t<
is_dynamic_buffer_v2<DynamicBuffer_v2>::value
>)
{
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,
constraint_t<
is_dynamic_buffer_v2<DynamicBuffer_v2>::value
>)
{
boost::system::error_code ec;
std::size_t bytes_transferred = read_until(s,
static_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,
constraint_t<
is_dynamic_buffer_v2<DynamicBuffer_v2>::value
>)
{
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, typename Traits>
inline std::size_t read_until(SyncReadStream& s, DynamicBuffer_v2 buffers,
const boost::basic_regex<char, Traits>& expr,
constraint_t<
is_dynamic_buffer_v2<DynamicBuffer_v2>::value
>)
{
boost::system::error_code ec;
std::size_t bytes_transferred = read_until(s,
static_cast<DynamicBuffer_v2&&>(buffers), expr, ec);
boost::asio::detail::throw_error(ec, "read_until");
return bytes_transferred;
}
template <typename SyncReadStream, typename DynamicBuffer_v2, typename Traits>
std::size_t read_until(SyncReadStream& s, DynamicBuffer_v2 buffers,
const boost::basic_regex<char, Traits>& expr, boost::system::error_code& ec,
constraint_t<
is_dynamic_buffer_v2<DynamicBuffer_v2>::value
>)
{
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, detail::regex_match_flags()))
{
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,
constraint_t<
is_match_condition<MatchCondition>::value
>,
constraint_t<
is_dynamic_buffer_v2<DynamicBuffer_v2>::value
>)
{
boost::system::error_code ec;
std::size_t bytes_transferred = read_until(s,
static_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,
constraint_t<
is_match_condition<MatchCondition>::value
>,
constraint_t<
is_dynamic_buffer_v2<DynamicBuffer_v2>::value
>)
{
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 base_from_cancellation_state<ReadHandler>
{
public:
template <typename BufferSequence>
read_until_delim_op_v1(AsyncReadStream& stream,
BufferSequence&& buffers,
char delim, ReadHandler& handler)
: base_from_cancellation_state<ReadHandler>(
handler, enable_partial_cancellation()),
stream_(stream),
buffers_(static_cast<BufferSequence&&>(buffers)),
delim_(delim),
start_(0),
search_position_(0),
handler_(static_cast<ReadHandler&&>(handler))
{
}
read_until_delim_op_v1(const read_until_delim_op_v1& other)
: base_from_cancellation_state<ReadHandler>(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)
: base_from_cancellation_state<ReadHandler>(
static_cast<base_from_cancellation_state<ReadHandler>&&>(other)),
stream_(other.stream_),
buffers_(static_cast<DynamicBuffer_v1&&>(other.buffers_)),
delim_(other.delim_),
start_(other.start_),
search_position_(other.search_position_),
handler_(static_cast<ReadHandler&&>(other.handler_))
{
}
void operator()(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 operation to obtain more data.
{
BOOST_ASIO_HANDLER_LOCATION((
__FILE__, __LINE__, "async_read_until"));
stream_.async_read_some(buffers_.prepare(bytes_to_read),
static_cast<read_until_delim_op_v1&&>(*this));
}
return; default:
buffers_.commit(bytes_transferred);
if (ec || bytes_transferred == 0)
break;
if (this->cancelled() != cancellation_type::none)
{
ec = error::operation_aborted;
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_;
static_cast<ReadHandler&&>(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 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 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 noexcept
{
return stream_.get_executor();
}
template <typename ReadHandler, typename DynamicBuffer_v1>
void operator()(ReadHandler&& handler,
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,
decay_t<DynamicBuffer_v1>,
decay_t<ReadHandler>>(
stream_, static_cast<DynamicBuffer_v1&&>(buffers),
delim, handler2.value)(boost::system::error_code(), 0, 1);
}
private:
AsyncReadStream& stream_;
};
} // namespace detail
#if !defined(GENERATING_DOCUMENTATION)
template <template <typename, typename> class Associator,
typename AsyncReadStream, typename DynamicBuffer_v1,
typename ReadHandler, typename DefaultCandidate>
struct associator<Associator,
detail::read_until_delim_op_v1<AsyncReadStream,
DynamicBuffer_v1, ReadHandler>,
DefaultCandidate>
: Associator<ReadHandler, DefaultCandidate>
{
static typename Associator<ReadHandler, DefaultCandidate>::type get(
const detail::read_until_delim_op_v1<AsyncReadStream,
DynamicBuffer_v1, ReadHandler>& h) noexcept
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_);
}
static auto get(
const detail::read_until_delim_op_v1<AsyncReadStream,
DynamicBuffer_v1, ReadHandler>& h,
const DefaultCandidate& c) noexcept
-> decltype(Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c))
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c);
}
};
#endif // !defined(GENERATING_DOCUMENTATION)
template <typename AsyncReadStream, typename DynamicBuffer_v1,
BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
std::size_t)) ReadToken>
inline auto async_read_until(AsyncReadStream& s,
DynamicBuffer_v1&& buffers, char delim, ReadToken&& token,
constraint_t<
is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
>,
constraint_t<
!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
>)
-> decltype(
async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
declval<detail::initiate_async_read_until_delim_v1<AsyncReadStream>>(),
token, static_cast<DynamicBuffer_v1&&>(buffers), delim))
{
return async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
detail::initiate_async_read_until_delim_v1<AsyncReadStream>(s),
token, static_cast<DynamicBuffer_v1&&>(buffers), delim);
}
namespace detail
{
template <typename AsyncReadStream,
typename DynamicBuffer_v1, typename ReadHandler>
class read_until_delim_string_op_v1
: public base_from_cancellation_state<ReadHandler>
{
public:
template <typename BufferSequence>
read_until_delim_string_op_v1(AsyncReadStream& stream,
BufferSequence&& buffers,
const std::string& delim, ReadHandler& handler)
: base_from_cancellation_state<ReadHandler>(
handler, enable_partial_cancellation()),
stream_(stream),
buffers_(static_cast<BufferSequence&&>(buffers)),
delim_(delim),
start_(0),
search_position_(0),
handler_(static_cast<ReadHandler&&>(handler))
{
}
read_until_delim_string_op_v1(const read_until_delim_string_op_v1& other)
: base_from_cancellation_state<ReadHandler>(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)
: base_from_cancellation_state<ReadHandler>(
static_cast<base_from_cancellation_state<ReadHandler>&&>(other)),
stream_(other.stream_),
buffers_(static_cast<DynamicBuffer_v1&&>(other.buffers_)),
delim_(static_cast<std::string&&>(other.delim_)),
start_(other.start_),
search_position_(other.search_position_),
handler_(static_cast<ReadHandler&&>(other.handler_))
{
}
void operator()(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 operation to obtain more data.
{
BOOST_ASIO_HANDLER_LOCATION((
__FILE__, __LINE__, "async_read_until"));
stream_.async_read_some(buffers_.prepare(bytes_to_read),
static_cast<read_until_delim_string_op_v1&&>(*this));
}
return; default:
buffers_.commit(bytes_transferred);
if (ec || bytes_transferred == 0)
break;
if (this->cancelled() != cancellation_type::none)
{
ec = error::operation_aborted;
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_;
static_cast<ReadHandler&&>(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 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 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 noexcept
{
return stream_.get_executor();
}
template <typename ReadHandler, typename DynamicBuffer_v1>
void operator()(ReadHandler&& handler,
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,
decay_t<DynamicBuffer_v1>,
decay_t<ReadHandler>>(
stream_, static_cast<DynamicBuffer_v1&&>(buffers),
delim, handler2.value)(boost::system::error_code(), 0, 1);
}
private:
AsyncReadStream& stream_;
};
} // namespace detail
#if !defined(GENERATING_DOCUMENTATION)
template <template <typename, typename> class Associator,
typename AsyncReadStream, typename DynamicBuffer_v1,
typename ReadHandler, typename DefaultCandidate>
struct associator<Associator,
detail::read_until_delim_string_op_v1<AsyncReadStream,
DynamicBuffer_v1, ReadHandler>,
DefaultCandidate>
: Associator<ReadHandler, DefaultCandidate>
{
static typename Associator<ReadHandler, DefaultCandidate>::type get(
const detail::read_until_delim_string_op_v1<
AsyncReadStream, DynamicBuffer_v1, ReadHandler>& h) noexcept
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_);
}
static auto get(
const detail::read_until_delim_string_op_v1<
AsyncReadStream, DynamicBuffer_v1, ReadHandler>& h,
const DefaultCandidate& c) noexcept
-> decltype(Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c))
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c);
}
};
#endif // !defined(GENERATING_DOCUMENTATION)
template <typename AsyncReadStream, typename DynamicBuffer_v1,
BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
std::size_t)) ReadToken>
inline auto async_read_until(AsyncReadStream& s, DynamicBuffer_v1&& buffers,
BOOST_ASIO_STRING_VIEW_PARAM delim, ReadToken&& token,
constraint_t<
is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
>,
constraint_t<
!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
>)
-> decltype(
async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
declval<detail::initiate_async_read_until_delim_string_v1<
AsyncReadStream>>(),
token, static_cast<DynamicBuffer_v1&&>(buffers),
static_cast<std::string>(delim)))
{
return async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
detail::initiate_async_read_until_delim_string_v1<AsyncReadStream>(s),
token, static_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 base_from_cancellation_state<ReadHandler>
{
public:
template <typename BufferSequence, typename Traits>
read_until_expr_op_v1(AsyncReadStream& stream, BufferSequence&& buffers,
const boost::basic_regex<char, Traits>& expr, ReadHandler& handler)
: base_from_cancellation_state<ReadHandler>(
handler, enable_partial_cancellation()),
stream_(stream),
buffers_(static_cast<BufferSequence&&>(buffers)),
expr_(expr),
start_(0),
search_position_(0),
handler_(static_cast<ReadHandler&&>(handler))
{
}
read_until_expr_op_v1(const read_until_expr_op_v1& other)
: base_from_cancellation_state<ReadHandler>(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)
: base_from_cancellation_state<ReadHandler>(
static_cast<base_from_cancellation_state<ReadHandler>&&>(other)),
stream_(other.stream_),
buffers_(static_cast<DynamicBuffer_v1&&>(other.buffers_)),
expr_(other.expr_),
start_(other.start_),
search_position_(other.search_position_),
handler_(static_cast<ReadHandler&&>(other.handler_))
{
}
void operator()(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_, regex_match_flags());
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 operation to obtain more data.
{
BOOST_ASIO_HANDLER_LOCATION((
__FILE__, __LINE__, "async_read_until"));
stream_.async_read_some(buffers_.prepare(bytes_to_read),
static_cast<read_until_expr_op_v1&&>(*this));
}
return; default:
buffers_.commit(bytes_transferred);
if (ec || bytes_transferred == 0)
break;
if (this->cancelled() != cancellation_type::none)
{
ec = error::operation_aborted;
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_;
static_cast<ReadHandler&&>(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 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 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 noexcept
{
return stream_.get_executor();
}
template <typename ReadHandler, typename DynamicBuffer_v1, typename RegEx>
void operator()(ReadHandler&& handler,
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,
decay_t<DynamicBuffer_v1>,
RegEx, decay_t<ReadHandler>>(
stream_, static_cast<DynamicBuffer_v1&&>(buffers),
expr, handler2.value)(boost::system::error_code(), 0, 1);
}
private:
AsyncReadStream& stream_;
};
} // namespace detail
#if !defined(GENERATING_DOCUMENTATION)
template <template <typename, typename> class Associator,
typename AsyncReadStream, typename DynamicBuffer_v1,
typename RegEx, typename ReadHandler, typename DefaultCandidate>
struct associator<Associator,
detail::read_until_expr_op_v1<AsyncReadStream,
DynamicBuffer_v1, RegEx, ReadHandler>,
DefaultCandidate>
: Associator<ReadHandler, DefaultCandidate>
{
static typename Associator<ReadHandler, DefaultCandidate>::type get(
const detail::read_until_expr_op_v1<AsyncReadStream,
DynamicBuffer_v1, RegEx, ReadHandler>& h) noexcept
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_);
}
static auto get(
const detail::read_until_expr_op_v1<AsyncReadStream,
DynamicBuffer_v1, RegEx, ReadHandler>& h,
const DefaultCandidate& c) noexcept
-> decltype(Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c))
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c);
}
};
#endif // !defined(GENERATING_DOCUMENTATION)
template <typename AsyncReadStream, typename DynamicBuffer_v1, typename Traits,
BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
std::size_t)) ReadToken>
inline auto async_read_until(AsyncReadStream& s, DynamicBuffer_v1&& buffers,
const boost::basic_regex<char, Traits>& expr, ReadToken&& token,
constraint_t<
is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
>,
constraint_t<
!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
>)
-> decltype(
async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
declval<detail::initiate_async_read_until_expr_v1<AsyncReadStream>>(),
token, static_cast<DynamicBuffer_v1&&>(buffers), expr))
{
return async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
detail::initiate_async_read_until_expr_v1<AsyncReadStream>(s),
token, static_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 base_from_cancellation_state<ReadHandler>
{
public:
template <typename BufferSequence>
read_until_match_op_v1(AsyncReadStream& stream,
BufferSequence&& buffers,
MatchCondition match_condition, ReadHandler& handler)
: base_from_cancellation_state<ReadHandler>(
handler, enable_partial_cancellation()),
stream_(stream),
buffers_(static_cast<BufferSequence&&>(buffers)),
match_condition_(match_condition),
start_(0),
search_position_(0),
handler_(static_cast<ReadHandler&&>(handler))
{
}
read_until_match_op_v1(const read_until_match_op_v1& other)
: base_from_cancellation_state<ReadHandler>(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)
: base_from_cancellation_state<ReadHandler>(
static_cast<base_from_cancellation_state<ReadHandler>&&>(other)),
stream_(other.stream_),
buffers_(static_cast<DynamicBuffer_v1&&>(other.buffers_)),
match_condition_(other.match_condition_),
start_(other.start_),
search_position_(other.search_position_),
handler_(static_cast<ReadHandler&&>(other.handler_))
{
}
void operator()(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 operation to obtain more data.
{
BOOST_ASIO_HANDLER_LOCATION((
__FILE__, __LINE__, "async_read_until"));
stream_.async_read_some(buffers_.prepare(bytes_to_read),
static_cast<read_until_match_op_v1&&>(*this));
}
return; default:
buffers_.commit(bytes_transferred);
if (ec || bytes_transferred == 0)
break;
if (this->cancelled() != cancellation_type::none)
{
ec = error::operation_aborted;
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_;
static_cast<ReadHandler&&>(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 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 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 noexcept
{
return stream_.get_executor();
}
template <typename ReadHandler,
typename DynamicBuffer_v1, typename MatchCondition>
void operator()(ReadHandler&& handler,
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,
decay_t<DynamicBuffer_v1>,
MatchCondition, decay_t<ReadHandler>>(
stream_, static_cast<DynamicBuffer_v1&&>(buffers),
match_condition, handler2.value)(boost::system::error_code(), 0, 1);
}
private:
AsyncReadStream& stream_;
};
} // namespace detail
#if !defined(GENERATING_DOCUMENTATION)
template <template <typename, typename> class Associator,
typename AsyncReadStream, typename DynamicBuffer_v1,
typename MatchCondition, typename ReadHandler, typename DefaultCandidate>
struct associator<Associator,
detail::read_until_match_op_v1<AsyncReadStream,
DynamicBuffer_v1, MatchCondition, ReadHandler>,
DefaultCandidate>
: Associator<ReadHandler, DefaultCandidate>
{
static typename Associator<ReadHandler, DefaultCandidate>::type get(
const detail::read_until_match_op_v1<AsyncReadStream,
DynamicBuffer_v1, MatchCondition, ReadHandler>& h) noexcept
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_);
}
static auto get(
const detail::read_until_match_op_v1<AsyncReadStream,
DynamicBuffer_v1, MatchCondition, ReadHandler>& h,
const DefaultCandidate& c) noexcept
-> decltype(Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c))
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c);
}
};
#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)) ReadToken>
inline auto async_read_until(AsyncReadStream& s, DynamicBuffer_v1&& buffers,
MatchCondition match_condition, ReadToken&& token,
constraint_t<
is_match_condition<MatchCondition>::value
>,
constraint_t<
is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
>,
constraint_t<
!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
>)
-> decltype(
async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
declval<detail::initiate_async_read_until_match_v1<AsyncReadStream>>(),
token, static_cast<DynamicBuffer_v1&&>(buffers),
match_condition))
{
return async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
detail::initiate_async_read_until_match_v1<AsyncReadStream>(s),
token, static_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)) ReadToken>
inline auto async_read_until(AsyncReadStream& s,
boost::asio::basic_streambuf<Allocator>& b, char delim, ReadToken&& token)
-> decltype(
async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
declval<detail::initiate_async_read_until_delim_v1<AsyncReadStream>>(),
token, basic_streambuf_ref<Allocator>(b), delim))
{
return async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
detail::initiate_async_read_until_delim_v1<AsyncReadStream>(s),
token, basic_streambuf_ref<Allocator>(b), delim);
}
template <typename AsyncReadStream, typename Allocator,
BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
std::size_t)) ReadToken>
inline auto async_read_until(AsyncReadStream& s,
boost::asio::basic_streambuf<Allocator>& b,
BOOST_ASIO_STRING_VIEW_PARAM delim, ReadToken&& token)
-> decltype(
async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
declval<detail::initiate_async_read_until_delim_string_v1<
AsyncReadStream>>(),
token, basic_streambuf_ref<Allocator>(b),
static_cast<std::string>(delim)))
{
return async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
detail::initiate_async_read_until_delim_string_v1<AsyncReadStream>(s),
token, basic_streambuf_ref<Allocator>(b),
static_cast<std::string>(delim));
}
#if defined(BOOST_ASIO_HAS_BOOST_REGEX)
template <typename AsyncReadStream, typename Allocator, typename Traits,
BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
std::size_t)) ReadToken>
inline auto async_read_until(AsyncReadStream& s,
boost::asio::basic_streambuf<Allocator>& b,
const boost::basic_regex<char, Traits>& expr, ReadToken&& token)
-> decltype(
async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
declval<detail::initiate_async_read_until_expr_v1<AsyncReadStream>>(),
token, basic_streambuf_ref<Allocator>(b), expr))
{
return async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
detail::initiate_async_read_until_expr_v1<AsyncReadStream>(s),
token, basic_streambuf_ref<Allocator>(b), expr);
}
#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)) ReadToken>
inline auto async_read_until(AsyncReadStream& s,
boost::asio::basic_streambuf<Allocator>& b,
MatchCondition match_condition, ReadToken&& token,
constraint_t<is_match_condition<MatchCondition>::value>)
-> decltype(
async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
declval<detail::initiate_async_read_until_match_v1<AsyncReadStream>>(),
token, basic_streambuf_ref<Allocator>(b), match_condition))
{
return async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
detail::initiate_async_read_until_match_v1<AsyncReadStream>(s),
token, basic_streambuf_ref<Allocator>(b), match_condition);
}
#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 base_from_cancellation_state<ReadHandler>
{
public:
template <typename BufferSequence>
read_until_delim_op_v2(AsyncReadStream& stream,
BufferSequence&& buffers,
char delim, ReadHandler& handler)
: base_from_cancellation_state<ReadHandler>(
handler, enable_partial_cancellation()),
stream_(stream),
buffers_(static_cast<BufferSequence&&>(buffers)),
delim_(delim),
start_(0),
search_position_(0),
bytes_to_read_(0),
handler_(static_cast<ReadHandler&&>(handler))
{
}
read_until_delim_op_v2(const read_until_delim_op_v2& other)
: base_from_cancellation_state<ReadHandler>(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)
: base_from_cancellation_state<ReadHandler>(
static_cast<base_from_cancellation_state<ReadHandler>&&>(other)),
stream_(other.stream_),
buffers_(static_cast<DynamicBuffer_v2&&>(other.buffers_)),
delim_(other.delim_),
start_(other.start_),
search_position_(other.search_position_),
bytes_to_read_(other.bytes_to_read_),
handler_(static_cast<ReadHandler&&>(other.handler_))
{
}
void operator()(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 operation to obtain more data.
pos = buffers_.size();
buffers_.grow(bytes_to_read_);
{
BOOST_ASIO_HANDLER_LOCATION((
__FILE__, __LINE__, "async_read_until"));
stream_.async_read_some(buffers_.data(pos, bytes_to_read_),
static_cast<read_until_delim_op_v2&&>(*this));
}
return; default:
buffers_.shrink(bytes_to_read_ - bytes_transferred);
if (ec || bytes_transferred == 0)
break;
if (this->cancelled() != cancellation_type::none)
{
ec = error::operation_aborted;
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_;
static_cast<ReadHandler&&>(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 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 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 noexcept
{
return stream_.get_executor();
}
template <typename ReadHandler, typename DynamicBuffer_v2>
void operator()(ReadHandler&& handler,
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,
decay_t<DynamicBuffer_v2>,
decay_t<ReadHandler>>(
stream_, static_cast<DynamicBuffer_v2&&>(buffers),
delim, handler2.value)(boost::system::error_code(), 0, 1);
}
private:
AsyncReadStream& stream_;
};
} // namespace detail
#if !defined(GENERATING_DOCUMENTATION)
template <template <typename, typename> class Associator,
typename AsyncReadStream, typename DynamicBuffer_v2,
typename ReadHandler, typename DefaultCandidate>
struct associator<Associator,
detail::read_until_delim_op_v2<AsyncReadStream,
DynamicBuffer_v2, ReadHandler>,
DefaultCandidate>
: Associator<ReadHandler, DefaultCandidate>
{
static typename Associator<ReadHandler, DefaultCandidate>::type get(
const detail::read_until_delim_op_v2<AsyncReadStream,
DynamicBuffer_v2, ReadHandler>& h) noexcept
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_);
}
static auto get(
const detail::read_until_delim_op_v2<AsyncReadStream,
DynamicBuffer_v2, ReadHandler>& h,
const DefaultCandidate& c) noexcept
-> decltype(Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c))
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c);
}
};
#endif // !defined(GENERATING_DOCUMENTATION)
template <typename AsyncReadStream, typename DynamicBuffer_v2,
BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
std::size_t)) ReadToken>
inline auto async_read_until(AsyncReadStream& s,
DynamicBuffer_v2 buffers, char delim, ReadToken&& token,
constraint_t<
is_dynamic_buffer_v2<DynamicBuffer_v2>::value
>)
-> decltype(
async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
declval<detail::initiate_async_read_until_delim_v2<AsyncReadStream>>(),
token, static_cast<DynamicBuffer_v2&&>(buffers), delim))
{
return async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
detail::initiate_async_read_until_delim_v2<AsyncReadStream>(s),
token, static_cast<DynamicBuffer_v2&&>(buffers), delim);
}
namespace detail
{
template <typename AsyncReadStream,
typename DynamicBuffer_v2, typename ReadHandler>
class read_until_delim_string_op_v2
: public base_from_cancellation_state<ReadHandler>
{
public:
template <typename BufferSequence>
read_until_delim_string_op_v2(AsyncReadStream& stream,
BufferSequence&& buffers,
const std::string& delim, ReadHandler& handler)
: base_from_cancellation_state<ReadHandler>(
handler, enable_partial_cancellation()),
stream_(stream),
buffers_(static_cast<BufferSequence&&>(buffers)),
delim_(delim),
start_(0),
search_position_(0),
bytes_to_read_(0),
handler_(static_cast<ReadHandler&&>(handler))
{
}
read_until_delim_string_op_v2(const read_until_delim_string_op_v2& other)
: base_from_cancellation_state<ReadHandler>(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)
: base_from_cancellation_state<ReadHandler>(
static_cast<base_from_cancellation_state<ReadHandler>&&>(other)),
stream_(other.stream_),
buffers_(static_cast<DynamicBuffer_v2&&>(other.buffers_)),
delim_(static_cast<std::string&&>(other.delim_)),
start_(other.start_),
search_position_(other.search_position_),
bytes_to_read_(other.bytes_to_read_),
handler_(static_cast<ReadHandler&&>(other.handler_))
{
}
void operator()(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 operation to obtain more data.
pos = buffers_.size();
buffers_.grow(bytes_to_read_);
{
BOOST_ASIO_HANDLER_LOCATION((
__FILE__, __LINE__, "async_read_until"));
stream_.async_read_some(buffers_.data(pos, bytes_to_read_),
static_cast<read_until_delim_string_op_v2&&>(*this));
}
return; default:
buffers_.shrink(bytes_to_read_ - bytes_transferred);
if (ec || bytes_transferred == 0)
break;
if (this->cancelled() != cancellation_type::none)
{
ec = error::operation_aborted;
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_;
static_cast<ReadHandler&&>(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 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 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 noexcept
{
return stream_.get_executor();
}
template <typename ReadHandler, typename DynamicBuffer_v2>
void operator()(ReadHandler&& handler,
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,
decay_t<DynamicBuffer_v2>,
decay_t<ReadHandler>>(
stream_, static_cast<DynamicBuffer_v2&&>(buffers),
delim, handler2.value)(boost::system::error_code(), 0, 1);
}
private:
AsyncReadStream& stream_;
};
} // namespace detail
#if !defined(GENERATING_DOCUMENTATION)
template <template <typename, typename> class Associator,
typename AsyncReadStream, typename DynamicBuffer_v2,
typename ReadHandler, typename DefaultCandidate>
struct associator<Associator,
detail::read_until_delim_string_op_v2<AsyncReadStream,
DynamicBuffer_v2, ReadHandler>,
DefaultCandidate>
: Associator<ReadHandler, DefaultCandidate>
{
static typename Associator<ReadHandler, DefaultCandidate>::type get(
const detail::read_until_delim_string_op_v2<
AsyncReadStream, DynamicBuffer_v2, ReadHandler>& h) noexcept
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_);
}
static auto get(
const detail::read_until_delim_string_op_v2<
AsyncReadStream, DynamicBuffer_v2, ReadHandler>& h,
const DefaultCandidate& c) noexcept
-> decltype(Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c))
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c);
}
};
#endif // !defined(GENERATING_DOCUMENTATION)
template <typename AsyncReadStream,
typename DynamicBuffer_v2,
BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
std::size_t)) ReadToken>
inline auto async_read_until(AsyncReadStream& s, DynamicBuffer_v2 buffers,
BOOST_ASIO_STRING_VIEW_PARAM delim, ReadToken&& token,
constraint_t<
is_dynamic_buffer_v2<DynamicBuffer_v2>::value
>)
-> decltype(
async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
declval<detail::initiate_async_read_until_delim_string_v2<
AsyncReadStream>>(),
token, static_cast<DynamicBuffer_v2&&>(buffers),
static_cast<std::string>(delim)))
{
return async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
detail::initiate_async_read_until_delim_string_v2<AsyncReadStream>(s),
token, static_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 base_from_cancellation_state<ReadHandler>
{
public:
template <typename BufferSequence, typename Traits>
read_until_expr_op_v2(AsyncReadStream& stream, BufferSequence&& buffers,
const boost::basic_regex<char, Traits>& expr, ReadHandler& handler)
: base_from_cancellation_state<ReadHandler>(
handler, enable_partial_cancellation()),
stream_(stream),
buffers_(static_cast<BufferSequence&&>(buffers)),
expr_(expr),
start_(0),
search_position_(0),
bytes_to_read_(0),
handler_(static_cast<ReadHandler&&>(handler))
{
}
read_until_expr_op_v2(const read_until_expr_op_v2& other)
: base_from_cancellation_state<ReadHandler>(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)
: base_from_cancellation_state<ReadHandler>(
static_cast<base_from_cancellation_state<ReadHandler>&&>(other)),
stream_(other.stream_),
buffers_(static_cast<DynamicBuffer_v2&&>(other.buffers_)),
expr_(other.expr_),
start_(other.start_),
search_position_(other.search_position_),
bytes_to_read_(other.bytes_to_read_),
handler_(static_cast<ReadHandler&&>(other.handler_))
{
}
void operator()(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_, regex_match_flags());
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 operation to obtain more data.
pos = buffers_.size();
buffers_.grow(bytes_to_read_);
{
BOOST_ASIO_HANDLER_LOCATION((
__FILE__, __LINE__, "async_read_until"));
stream_.async_read_some(buffers_.data(pos, bytes_to_read_),
static_cast<read_until_expr_op_v2&&>(*this));
}
return; default:
buffers_.shrink(bytes_to_read_ - bytes_transferred);
if (ec || bytes_transferred == 0)
break;
if (this->cancelled() != cancellation_type::none)
{
ec = error::operation_aborted;
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_;
static_cast<ReadHandler&&>(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 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 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 noexcept
{
return stream_.get_executor();
}
template <typename ReadHandler, typename DynamicBuffer_v2, typename RegEx>
void operator()(ReadHandler&& handler,
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,
decay_t<DynamicBuffer_v2>,
RegEx, decay_t<ReadHandler>>(
stream_, static_cast<DynamicBuffer_v2&&>(buffers),
expr, handler2.value)(boost::system::error_code(), 0, 1);
}
private:
AsyncReadStream& stream_;
};
} // namespace detail
#if !defined(GENERATING_DOCUMENTATION)
template <template <typename, typename> class Associator,
typename AsyncReadStream, typename DynamicBuffer_v2,
typename RegEx, typename ReadHandler, typename DefaultCandidate>
struct associator<Associator,
detail::read_until_expr_op_v2<AsyncReadStream,
DynamicBuffer_v2, RegEx, ReadHandler>,
DefaultCandidate>
: Associator<ReadHandler, DefaultCandidate>
{
static typename Associator<ReadHandler, DefaultCandidate>::type get(
const detail::read_until_expr_op_v2<AsyncReadStream,
DynamicBuffer_v2, RegEx, ReadHandler>& h) noexcept
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_);
}
static auto get(
const detail::read_until_expr_op_v2<AsyncReadStream,
DynamicBuffer_v2, RegEx, ReadHandler>& h,
const DefaultCandidate& c) noexcept
-> decltype(Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c))
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c);
}
};
#endif // !defined(GENERATING_DOCUMENTATION)
template <typename AsyncReadStream, typename DynamicBuffer_v2, typename Traits,
BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
std::size_t)) ReadToken>
inline auto async_read_until(AsyncReadStream& s, DynamicBuffer_v2 buffers,
const boost::basic_regex<char, Traits>& expr, ReadToken&& token,
constraint_t<
is_dynamic_buffer_v2<DynamicBuffer_v2>::value
>)
-> decltype(
async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
declval<detail::initiate_async_read_until_expr_v2<AsyncReadStream>>(),
token, static_cast<DynamicBuffer_v2&&>(buffers), expr))
{
return async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
detail::initiate_async_read_until_expr_v2<AsyncReadStream>(s),
token, static_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 base_from_cancellation_state<ReadHandler>
{
public:
template <typename BufferSequence>
read_until_match_op_v2(AsyncReadStream& stream,
BufferSequence&& buffers,
MatchCondition match_condition, ReadHandler& handler)
: base_from_cancellation_state<ReadHandler>(
handler, enable_partial_cancellation()),
stream_(stream),
buffers_(static_cast<BufferSequence&&>(buffers)),
match_condition_(match_condition),
start_(0),
search_position_(0),
bytes_to_read_(0),
handler_(static_cast<ReadHandler&&>(handler))
{
}
read_until_match_op_v2(const read_until_match_op_v2& other)
: base_from_cancellation_state<ReadHandler>(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)
: base_from_cancellation_state<ReadHandler>(
static_cast<base_from_cancellation_state<ReadHandler>&&>(other)),
stream_(other.stream_),
buffers_(static_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_(static_cast<ReadHandler&&>(other.handler_))
{
}
void operator()(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 operation to obtain more data.
pos = buffers_.size();
buffers_.grow(bytes_to_read_);
{
BOOST_ASIO_HANDLER_LOCATION((
__FILE__, __LINE__, "async_read_until"));
stream_.async_read_some(buffers_.data(pos, bytes_to_read_),
static_cast<read_until_match_op_v2&&>(*this));
}
return; default:
buffers_.shrink(bytes_to_read_ - bytes_transferred);
if (ec || bytes_transferred == 0)
break;
if (this->cancelled() != cancellation_type::none)
{
ec = error::operation_aborted;
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_;
static_cast<ReadHandler&&>(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 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 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 noexcept
{
return stream_.get_executor();
}
template <typename ReadHandler,
typename DynamicBuffer_v2, typename MatchCondition>
void operator()(ReadHandler&& handler,
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, decay_t<DynamicBuffer_v2>,
MatchCondition, decay_t<ReadHandler>>(
stream_, static_cast<DynamicBuffer_v2&&>(buffers),
match_condition, handler2.value)(boost::system::error_code(), 0, 1);
}
private:
AsyncReadStream& stream_;
};
} // namespace detail
#if !defined(GENERATING_DOCUMENTATION)
template <template <typename, typename> class Associator,
typename AsyncReadStream, typename DynamicBuffer_v2,
typename MatchCondition, typename ReadHandler, typename DefaultCandidate>
struct associator<Associator,
detail::read_until_match_op_v2<AsyncReadStream,
DynamicBuffer_v2, MatchCondition, ReadHandler>,
DefaultCandidate>
: Associator<ReadHandler, DefaultCandidate>
{
static typename Associator<ReadHandler, DefaultCandidate>::type get(
const detail::read_until_match_op_v2<AsyncReadStream,
DynamicBuffer_v2, MatchCondition, ReadHandler>& h) noexcept
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_);
}
static auto get(
const detail::read_until_match_op_v2<AsyncReadStream,
DynamicBuffer_v2, MatchCondition, ReadHandler>& h,
const DefaultCandidate& c) noexcept
-> decltype(Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c))
{
return Associator<ReadHandler, DefaultCandidate>::get(h.handler_, c);
}
};
#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)) ReadToken>
inline auto async_read_until(AsyncReadStream& s, DynamicBuffer_v2 buffers,
MatchCondition match_condition, ReadToken&& token,
constraint_t<
is_match_condition<MatchCondition>::value
>,
constraint_t<
is_dynamic_buffer_v2<DynamicBuffer_v2>::value
>)
-> decltype(
async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
declval<detail::initiate_async_read_until_match_v2<AsyncReadStream>>(),
token, static_cast<DynamicBuffer_v2&&>(buffers),
match_condition))
{
return async_initiate<ReadToken,
void (boost::system::error_code, std::size_t)>(
detail::initiate_async_read_until_match_v2<AsyncReadStream>(s),
token, static_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