Chris@16: //
Chris@16: // impl/read_until.hpp
Chris@16: // ~~~~~~~~~~~~~~~~~~~
Chris@16: //
Chris@101: // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_ASIO_IMPL_READ_UNTIL_HPP
Chris@16: #define BOOST_ASIO_IMPL_READ_UNTIL_HPP
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: # pragma once
Chris@16: #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: 
Chris@16: #include <algorithm>
Chris@16: #include <string>
Chris@16: #include <vector>
Chris@16: #include <utility>
Chris@16: #include <boost/asio/buffer.hpp>
Chris@16: #include <boost/asio/buffers_iterator.hpp>
Chris@16: #include <boost/asio/detail/bind_handler.hpp>
Chris@16: #include <boost/asio/detail/handler_alloc_helpers.hpp>
Chris@16: #include <boost/asio/detail/handler_cont_helpers.hpp>
Chris@16: #include <boost/asio/detail/handler_invoke_helpers.hpp>
Chris@16: #include <boost/asio/detail/handler_type_requirements.hpp>
Chris@16: #include <boost/asio/detail/limits.hpp>
Chris@16: #include <boost/asio/detail/throw_error.hpp>
Chris@16: 
Chris@16: #include <boost/asio/detail/push_options.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace asio {
Chris@16: 
Chris@16: template <typename SyncReadStream, typename Allocator>
Chris@16: inline std::size_t read_until(SyncReadStream& s,
Chris@16:     boost::asio::basic_streambuf<Allocator>& b, char delim)
Chris@16: {
Chris@16:   boost::system::error_code ec;
Chris@16:   std::size_t bytes_transferred = read_until(s, b, delim, ec);
Chris@16:   boost::asio::detail::throw_error(ec, "read_until");
Chris@16:   return bytes_transferred;
Chris@16: }
Chris@16: 
Chris@16: template <typename SyncReadStream, typename Allocator>
Chris@16: std::size_t read_until(SyncReadStream& s,
Chris@16:     boost::asio::basic_streambuf<Allocator>& b, char delim,
Chris@16:     boost::system::error_code& ec)
Chris@16: {
Chris@16:   std::size_t search_position = 0;
Chris@16:   for (;;)
Chris@16:   {
Chris@16:     // Determine the range of the data to be searched.
Chris@16:     typedef typename boost::asio::basic_streambuf<
Chris@16:       Allocator>::const_buffers_type const_buffers_type;
Chris@16:     typedef boost::asio::buffers_iterator<const_buffers_type> iterator;
Chris@16:     const_buffers_type buffers = b.data();
Chris@16:     iterator begin = iterator::begin(buffers);
Chris@16:     iterator start_pos = begin + search_position;
Chris@16:     iterator end = iterator::end(buffers);
Chris@16: 
Chris@16:     // Look for a match.
Chris@16:     iterator iter = std::find(start_pos, end, delim);
Chris@16:     if (iter != end)
Chris@16:     {
Chris@16:       // Found a match. We're done.
Chris@16:       ec = boost::system::error_code();
Chris@16:       return iter - begin + 1;
Chris@16:     }
Chris@16:     else
Chris@16:     {
Chris@16:       // No match. Next search can start with the new data.
Chris@16:       search_position = end - begin;
Chris@16:     }
Chris@16: 
Chris@16:     // Check if buffer is full.
Chris@16:     if (b.size() == b.max_size())
Chris@16:     {
Chris@16:       ec = error::not_found;
Chris@16:       return 0;
Chris@16:     }
Chris@16: 
Chris@16:     // Need more data.
Chris@16:     std::size_t bytes_to_read = read_size_helper(b, 65536);
Chris@16:     b.commit(s.read_some(b.prepare(bytes_to_read), ec));
Chris@16:     if (ec)
Chris@16:       return 0;
Chris@16:   }
Chris@16: }
Chris@16: 
Chris@16: template <typename SyncReadStream, typename Allocator>
Chris@16: inline std::size_t read_until(SyncReadStream& s,
Chris@16:     boost::asio::basic_streambuf<Allocator>& b, const std::string& delim)
Chris@16: {
Chris@16:   boost::system::error_code ec;
Chris@16:   std::size_t bytes_transferred = read_until(s, b, delim, ec);
Chris@16:   boost::asio::detail::throw_error(ec, "read_until");
Chris@16:   return bytes_transferred;
Chris@16: }
Chris@16: 
Chris@16: namespace detail
Chris@16: {
Chris@16:   // Algorithm that finds a subsequence of equal values in a sequence. Returns
Chris@16:   // (iterator,true) if a full match was found, in which case the iterator
Chris@16:   // points to the beginning of the match. Returns (iterator,false) if a
Chris@16:   // partial match was found at the end of the first sequence, in which case
Chris@16:   // the iterator points to the beginning of the partial match. Returns
Chris@16:   // (last1,false) if no full or partial match was found.
Chris@16:   template <typename Iterator1, typename Iterator2>
Chris@16:   std::pair<Iterator1, bool> partial_search(
Chris@16:       Iterator1 first1, Iterator1 last1, Iterator2 first2, Iterator2 last2)
Chris@16:   {
Chris@16:     for (Iterator1 iter1 = first1; iter1 != last1; ++iter1)
Chris@16:     {
Chris@16:       Iterator1 test_iter1 = iter1;
Chris@16:       Iterator2 test_iter2 = first2;
Chris@16:       for (;; ++test_iter1, ++test_iter2)
Chris@16:       {
Chris@16:         if (test_iter2 == last2)
Chris@16:           return std::make_pair(iter1, true);
Chris@16:         if (test_iter1 == last1)
Chris@16:         {
Chris@16:           if (test_iter2 != first2)
Chris@16:             return std::make_pair(iter1, false);
Chris@16:           else
Chris@16:             break;
Chris@16:         }
Chris@16:         if (*test_iter1 != *test_iter2)
Chris@16:           break;
Chris@16:       }
Chris@16:     }
Chris@16:     return std::make_pair(last1, false);
Chris@16:   }
Chris@16: } // namespace detail
Chris@16: 
Chris@16: template <typename SyncReadStream, typename Allocator>
Chris@16: std::size_t read_until(SyncReadStream& s,
Chris@16:     boost::asio::basic_streambuf<Allocator>& b, const std::string& delim,
Chris@16:     boost::system::error_code& ec)
Chris@16: {
Chris@16:   std::size_t search_position = 0;
Chris@16:   for (;;)
Chris@16:   {
Chris@16:     // Determine the range of the data to be searched.
Chris@16:     typedef typename boost::asio::basic_streambuf<
Chris@16:       Allocator>::const_buffers_type const_buffers_type;
Chris@16:     typedef boost::asio::buffers_iterator<const_buffers_type> iterator;
Chris@16:     const_buffers_type buffers = b.data();
Chris@16:     iterator begin = iterator::begin(buffers);
Chris@16:     iterator start_pos = begin + search_position;
Chris@16:     iterator end = iterator::end(buffers);
Chris@16: 
Chris@16:     // Look for a match.
Chris@16:     std::pair<iterator, bool> result = detail::partial_search(
Chris@16:         start_pos, end, delim.begin(), delim.end());
Chris@16:     if (result.first != end)
Chris@16:     {
Chris@16:       if (result.second)
Chris@16:       {
Chris@16:         // Full match. We're done.
Chris@16:         ec = boost::system::error_code();
Chris@16:         return result.first - begin + delim.length();
Chris@16:       }
Chris@16:       else
Chris@16:       {
Chris@16:         // Partial match. Next search needs to start from beginning of match.
Chris@16:         search_position = result.first - begin;
Chris@16:       }
Chris@16:     }
Chris@16:     else
Chris@16:     {
Chris@16:       // No match. Next search can start with the new data.
Chris@16:       search_position = end - begin;
Chris@16:     }
Chris@16: 
Chris@16:     // Check if buffer is full.
Chris@16:     if (b.size() == b.max_size())
Chris@16:     {
Chris@16:       ec = error::not_found;
Chris@16:       return 0;
Chris@16:     }
Chris@16: 
Chris@16:     // Need more data.
Chris@16:     std::size_t bytes_to_read = read_size_helper(b, 65536);
Chris@16:     b.commit(s.read_some(b.prepare(bytes_to_read), ec));
Chris@16:     if (ec)
Chris@16:       return 0;
Chris@16:   }
Chris@16: }
Chris@16: 
Chris@16: #if defined(BOOST_ASIO_HAS_BOOST_REGEX)
Chris@16: 
Chris@16: template <typename SyncReadStream, typename Allocator>
Chris@16: inline std::size_t read_until(SyncReadStream& s,
Chris@16:     boost::asio::basic_streambuf<Allocator>& b, const boost::regex& expr)
Chris@16: {
Chris@16:   boost::system::error_code ec;
Chris@16:   std::size_t bytes_transferred = read_until(s, b, expr, ec);
Chris@16:   boost::asio::detail::throw_error(ec, "read_until");
Chris@16:   return bytes_transferred;
Chris@16: }
Chris@16: 
Chris@16: template <typename SyncReadStream, typename Allocator>
Chris@16: std::size_t read_until(SyncReadStream& s,
Chris@16:     boost::asio::basic_streambuf<Allocator>& b, const boost::regex& expr,
Chris@16:     boost::system::error_code& ec)
Chris@16: {
Chris@16:   std::size_t search_position = 0;
Chris@16:   for (;;)
Chris@16:   {
Chris@16:     // Determine the range of the data to be searched.
Chris@16:     typedef typename boost::asio::basic_streambuf<
Chris@16:       Allocator>::const_buffers_type const_buffers_type;
Chris@16:     typedef boost::asio::buffers_iterator<const_buffers_type> iterator;
Chris@16:     const_buffers_type buffers = b.data();
Chris@16:     iterator begin = iterator::begin(buffers);
Chris@16:     iterator start_pos = begin + search_position;
Chris@16:     iterator end = iterator::end(buffers);
Chris@16: 
Chris@16:     // Look for a match.
Chris@16:     boost::match_results<iterator,
Chris@16:       typename std::vector<boost::sub_match<iterator> >::allocator_type>
Chris@16:         match_results;
Chris@16:     if (regex_search(start_pos, end, match_results, expr,
Chris@16:           boost::match_default | boost::match_partial))
Chris@16:     {
Chris@16:       if (match_results[0].matched)
Chris@16:       {
Chris@16:         // Full match. We're done.
Chris@16:         ec = boost::system::error_code();
Chris@16:         return match_results[0].second - begin;
Chris@16:       }
Chris@16:       else
Chris@16:       {
Chris@16:         // Partial match. Next search needs to start from beginning of match.
Chris@16:         search_position = match_results[0].first - begin;
Chris@16:       }
Chris@16:     }
Chris@16:     else
Chris@16:     {
Chris@16:       // No match. Next search can start with the new data.
Chris@16:       search_position = end - begin;
Chris@16:     }
Chris@16: 
Chris@16:     // Check if buffer is full.
Chris@16:     if (b.size() == b.max_size())
Chris@16:     {
Chris@16:       ec = error::not_found;
Chris@16:       return 0;
Chris@16:     }
Chris@16: 
Chris@16:     // Need more data.
Chris@16:     std::size_t bytes_to_read = read_size_helper(b, 65536);
Chris@16:     b.commit(s.read_some(b.prepare(bytes_to_read), ec));
Chris@16:     if (ec)
Chris@16:       return 0;
Chris@16:   }
Chris@16: }
Chris@16: 
Chris@16: #endif // defined(BOOST_ASIO_HAS_BOOST_REGEX)
Chris@16: 
Chris@16: template <typename SyncReadStream, typename Allocator, typename MatchCondition>
Chris@16: std::size_t read_until(SyncReadStream& s,
Chris@16:     boost::asio::basic_streambuf<Allocator>& b,
Chris@16:     MatchCondition match_condition, boost::system::error_code& ec,
Chris@16:     typename enable_if<is_match_condition<MatchCondition>::value>::type*)
Chris@16: {
Chris@16:   std::size_t search_position = 0;
Chris@16:   for (;;)
Chris@16:   {
Chris@16:     // Determine the range of the data to be searched.
Chris@16:     typedef typename boost::asio::basic_streambuf<
Chris@16:       Allocator>::const_buffers_type const_buffers_type;
Chris@16:     typedef boost::asio::buffers_iterator<const_buffers_type> iterator;
Chris@16:     const_buffers_type buffers = b.data();
Chris@16:     iterator begin = iterator::begin(buffers);
Chris@16:     iterator start_pos = begin + search_position;
Chris@16:     iterator end = iterator::end(buffers);
Chris@16: 
Chris@16:     // Look for a match.
Chris@16:     std::pair<iterator, bool> result = match_condition(start_pos, end);
Chris@16:     if (result.second)
Chris@16:     {
Chris@16:       // Full match. We're done.
Chris@16:       ec = boost::system::error_code();
Chris@16:       return result.first - begin;
Chris@16:     }
Chris@16:     else if (result.first != end)
Chris@16:     {
Chris@16:       // Partial match. Next search needs to start from beginning of match.
Chris@16:       search_position = result.first - begin;
Chris@16:     }
Chris@16:     else
Chris@16:     {
Chris@16:       // No match. Next search can start with the new data.
Chris@16:       search_position = end - begin;
Chris@16:     }
Chris@16: 
Chris@16:     // Check if buffer is full.
Chris@16:     if (b.size() == b.max_size())
Chris@16:     {
Chris@16:       ec = error::not_found;
Chris@16:       return 0;
Chris@16:     }
Chris@16: 
Chris@16:     // Need more data.
Chris@16:     std::size_t bytes_to_read = read_size_helper(b, 65536);
Chris@16:     b.commit(s.read_some(b.prepare(bytes_to_read), ec));
Chris@16:     if (ec)
Chris@16:       return 0;
Chris@16:   }
Chris@16: }
Chris@16: 
Chris@16: template <typename SyncReadStream, typename Allocator, typename MatchCondition>
Chris@16: inline std::size_t read_until(SyncReadStream& s,
Chris@16:     boost::asio::basic_streambuf<Allocator>& b, MatchCondition match_condition,
Chris@16:     typename enable_if<is_match_condition<MatchCondition>::value>::type*)
Chris@16: {
Chris@16:   boost::system::error_code ec;
Chris@16:   std::size_t bytes_transferred = read_until(s, b, match_condition, ec);
Chris@16:   boost::asio::detail::throw_error(ec, "read_until");
Chris@16:   return bytes_transferred;
Chris@16: }
Chris@16: 
Chris@16: namespace detail
Chris@16: {
Chris@16:   template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
Chris@16:   class read_until_delim_op
Chris@16:   {
Chris@16:   public:
Chris@16:     read_until_delim_op(AsyncReadStream& stream,
Chris@16:         boost::asio::basic_streambuf<Allocator>& streambuf,
Chris@16:         char delim, ReadHandler& handler)
Chris@16:       : stream_(stream),
Chris@16:         streambuf_(streambuf),
Chris@16:         delim_(delim),
Chris@16:         start_(0),
Chris@16:         search_position_(0),
Chris@16:         handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
Chris@16:     {
Chris@16:     }
Chris@16: 
Chris@16: #if defined(BOOST_ASIO_HAS_MOVE)
Chris@16:     read_until_delim_op(const read_until_delim_op& other)
Chris@16:       : stream_(other.stream_),
Chris@16:         streambuf_(other.streambuf_),
Chris@16:         delim_(other.delim_),
Chris@16:         start_(other.start_),
Chris@16:         search_position_(other.search_position_),
Chris@16:         handler_(other.handler_)
Chris@16:     {
Chris@16:     }
Chris@16: 
Chris@16:     read_until_delim_op(read_until_delim_op&& other)
Chris@16:       : stream_(other.stream_),
Chris@16:         streambuf_(other.streambuf_),
Chris@16:         delim_(other.delim_),
Chris@16:         start_(other.start_),
Chris@16:         search_position_(other.search_position_),
Chris@16:         handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
Chris@16:     {
Chris@16:     }
Chris@16: #endif // defined(BOOST_ASIO_HAS_MOVE)
Chris@16: 
Chris@16:     void operator()(const boost::system::error_code& ec,
Chris@16:         std::size_t bytes_transferred, int start = 0)
Chris@16:     {
Chris@16:       const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
Chris@16:       std::size_t bytes_to_read;
Chris@16:       switch (start_ = start)
Chris@16:       {
Chris@16:       case 1:
Chris@16:         for (;;)
Chris@16:         {
Chris@16:           {
Chris@16:             // Determine the range of the data to be searched.
Chris@16:             typedef typename boost::asio::basic_streambuf<
Chris@16:               Allocator>::const_buffers_type const_buffers_type;
Chris@16:             typedef boost::asio::buffers_iterator<const_buffers_type> iterator;
Chris@16:             const_buffers_type buffers = streambuf_.data();
Chris@16:             iterator begin = iterator::begin(buffers);
Chris@16:             iterator start_pos = begin + search_position_;
Chris@16:             iterator end = iterator::end(buffers);
Chris@16: 
Chris@16:             // Look for a match.
Chris@16:             iterator iter = std::find(start_pos, end, delim_);
Chris@16:             if (iter != end)
Chris@16:             {
Chris@16:               // Found a match. We're done.
Chris@16:               search_position_ = iter - begin + 1;
Chris@16:               bytes_to_read = 0;
Chris@16:             }
Chris@16: 
Chris@16:             // No match yet. Check if buffer is full.
Chris@16:             else if (streambuf_.size() == streambuf_.max_size())
Chris@16:             {
Chris@16:               search_position_ = not_found;
Chris@16:               bytes_to_read = 0;
Chris@16:             }
Chris@16: 
Chris@16:             // Need to read some more data.
Chris@16:             else
Chris@16:             {
Chris@16:               // Next search can start with the new data.
Chris@16:               search_position_ = end - begin;
Chris@16:               bytes_to_read = read_size_helper(streambuf_, 65536);
Chris@16:             }
Chris@16:           }
Chris@16: 
Chris@16:           // Check if we're done.
Chris@16:           if (!start && bytes_to_read == 0)
Chris@16:             break;
Chris@16: 
Chris@16:           // Start a new asynchronous read operation to obtain more data.
Chris@16:           stream_.async_read_some(streambuf_.prepare(bytes_to_read),
Chris@16:               BOOST_ASIO_MOVE_CAST(read_until_delim_op)(*this));
Chris@16:           return; default:
Chris@16:           streambuf_.commit(bytes_transferred);
Chris@16:           if (ec || bytes_transferred == 0)
Chris@16:             break;
Chris@16:         }
Chris@16: 
Chris@16:         const boost::system::error_code result_ec =
Chris@16:           (search_position_ == not_found)
Chris@16:           ? error::not_found : ec;
Chris@16: 
Chris@16:         const std::size_t result_n =
Chris@16:           (ec || search_position_ == not_found)
Chris@16:           ? 0 : search_position_;
Chris@16: 
Chris@16:         handler_(result_ec, result_n);
Chris@16:       }
Chris@16:     }
Chris@16: 
Chris@16:   //private:
Chris@16:     AsyncReadStream& stream_;
Chris@16:     boost::asio::basic_streambuf<Allocator>& streambuf_;
Chris@16:     char delim_;
Chris@16:     int start_;
Chris@16:     std::size_t search_position_;
Chris@16:     ReadHandler handler_;
Chris@16:   };
Chris@16: 
Chris@16:   template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
Chris@16:   inline void* asio_handler_allocate(std::size_t size,
Chris@16:       read_until_delim_op<AsyncReadStream,
Chris@16:         Allocator, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     return boost_asio_handler_alloc_helpers::allocate(
Chris@16:         size, this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
Chris@16:   inline void asio_handler_deallocate(void* pointer, std::size_t size,
Chris@16:       read_until_delim_op<AsyncReadStream,
Chris@16:         Allocator, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     boost_asio_handler_alloc_helpers::deallocate(
Chris@16:         pointer, size, this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
Chris@16:   inline bool asio_handler_is_continuation(
Chris@16:       read_until_delim_op<AsyncReadStream,
Chris@16:         Allocator, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     return this_handler->start_ == 0 ? true
Chris@16:       : boost_asio_handler_cont_helpers::is_continuation(
Chris@16:           this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename Function, typename AsyncReadStream, typename Allocator,
Chris@16:       typename ReadHandler>
Chris@16:   inline void asio_handler_invoke(Function& function,
Chris@16:       read_until_delim_op<AsyncReadStream,
Chris@16:         Allocator, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     boost_asio_handler_invoke_helpers::invoke(
Chris@16:         function, this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename Function, typename AsyncReadStream, typename Allocator,
Chris@16:       typename ReadHandler>
Chris@16:   inline void asio_handler_invoke(const Function& function,
Chris@16:       read_until_delim_op<AsyncReadStream,
Chris@16:         Allocator, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     boost_asio_handler_invoke_helpers::invoke(
Chris@16:         function, this_handler->handler_);
Chris@16:   }
Chris@16: } // namespace detail
Chris@16: 
Chris@16: template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
Chris@16: BOOST_ASIO_INITFN_RESULT_TYPE(ReadHandler,
Chris@16:     void (boost::system::error_code, std::size_t))
Chris@16: async_read_until(AsyncReadStream& s,
Chris@16:     boost::asio::basic_streambuf<Allocator>& b, char delim,
Chris@16:     BOOST_ASIO_MOVE_ARG(ReadHandler) handler)
Chris@16: {
Chris@16:   // If you get an error on the following line it means that your handler does
Chris@16:   // not meet the documented type requirements for a ReadHandler.
Chris@16:   BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
Chris@16: 
Chris@16:   detail::async_result_init<
Chris@16:     ReadHandler, void (boost::system::error_code, std::size_t)> init(
Chris@16:       BOOST_ASIO_MOVE_CAST(ReadHandler)(handler));
Chris@16: 
Chris@16:   detail::read_until_delim_op<AsyncReadStream,
Chris@16:     Allocator, BOOST_ASIO_HANDLER_TYPE(ReadHandler,
Chris@16:       void (boost::system::error_code, std::size_t))>(
Chris@16:         s, b, delim, init.handler)(
Chris@16:           boost::system::error_code(), 0, 1);
Chris@16: 
Chris@16:   return init.result.get();
Chris@16: }
Chris@16: 
Chris@16: namespace detail
Chris@16: {
Chris@16:   template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
Chris@16:   class read_until_delim_string_op
Chris@16:   {
Chris@16:   public:
Chris@16:     read_until_delim_string_op(AsyncReadStream& stream,
Chris@16:         boost::asio::basic_streambuf<Allocator>& streambuf,
Chris@16:         const std::string& delim, ReadHandler& handler)
Chris@16:       : stream_(stream),
Chris@16:         streambuf_(streambuf),
Chris@16:         delim_(delim),
Chris@16:         start_(0),
Chris@16:         search_position_(0),
Chris@16:         handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
Chris@16:     {
Chris@16:     }
Chris@16: 
Chris@16: #if defined(BOOST_ASIO_HAS_MOVE)
Chris@16:     read_until_delim_string_op(const read_until_delim_string_op& other)
Chris@16:       : stream_(other.stream_),
Chris@16:         streambuf_(other.streambuf_),
Chris@16:         delim_(other.delim_),
Chris@16:         start_(other.start_),
Chris@16:         search_position_(other.search_position_),
Chris@16:         handler_(other.handler_)
Chris@16:     {
Chris@16:     }
Chris@16: 
Chris@16:     read_until_delim_string_op(read_until_delim_string_op&& other)
Chris@16:       : stream_(other.stream_),
Chris@16:         streambuf_(other.streambuf_),
Chris@16:         delim_(BOOST_ASIO_MOVE_CAST(std::string)(other.delim_)),
Chris@16:         start_(other.start_),
Chris@16:         search_position_(other.search_position_),
Chris@16:         handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
Chris@16:     {
Chris@16:     }
Chris@16: #endif // defined(BOOST_ASIO_HAS_MOVE)
Chris@16: 
Chris@16:     void operator()(const boost::system::error_code& ec,
Chris@16:         std::size_t bytes_transferred, int start = 0)
Chris@16:     {
Chris@16:       const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
Chris@16:       std::size_t bytes_to_read;
Chris@16:       switch (start_ = start)
Chris@16:       {
Chris@16:       case 1:
Chris@16:         for (;;)
Chris@16:         {
Chris@16:           {
Chris@16:             // Determine the range of the data to be searched.
Chris@16:             typedef typename boost::asio::basic_streambuf<
Chris@16:               Allocator>::const_buffers_type const_buffers_type;
Chris@16:             typedef boost::asio::buffers_iterator<const_buffers_type> iterator;
Chris@16:             const_buffers_type buffers = streambuf_.data();
Chris@16:             iterator begin = iterator::begin(buffers);
Chris@16:             iterator start_pos = begin + search_position_;
Chris@16:             iterator end = iterator::end(buffers);
Chris@16: 
Chris@16:             // Look for a match.
Chris@16:             std::pair<iterator, bool> result = detail::partial_search(
Chris@16:                 start_pos, end, delim_.begin(), delim_.end());
Chris@16:             if (result.first != end && result.second)
Chris@16:             {
Chris@16:               // Full match. We're done.
Chris@16:               search_position_ = result.first - begin + delim_.length();
Chris@16:               bytes_to_read = 0;
Chris@16:             }
Chris@16: 
Chris@16:             // No match yet. Check if buffer is full.
Chris@16:             else if (streambuf_.size() == streambuf_.max_size())
Chris@16:             {
Chris@16:               search_position_ = not_found;
Chris@16:               bytes_to_read = 0;
Chris@16:             }
Chris@16: 
Chris@16:             // Need to read some more data.
Chris@16:             else
Chris@16:             {
Chris@16:               if (result.first != end)
Chris@16:               {
Chris@16:                 // Partial match. Next search needs to start from beginning of
Chris@16:                 // match.
Chris@16:                 search_position_ = result.first - begin;
Chris@16:               }
Chris@16:               else
Chris@16:               {
Chris@16:                 // Next search can start with the new data.
Chris@16:                 search_position_ = end - begin;
Chris@16:               }
Chris@16: 
Chris@16:               bytes_to_read = read_size_helper(streambuf_, 65536);
Chris@16:             }
Chris@16:           }
Chris@16: 
Chris@16:           // Check if we're done.
Chris@16:           if (!start && bytes_to_read == 0)
Chris@16:             break;
Chris@16: 
Chris@16:           // Start a new asynchronous read operation to obtain more data.
Chris@16:           stream_.async_read_some(streambuf_.prepare(bytes_to_read),
Chris@16:               BOOST_ASIO_MOVE_CAST(read_until_delim_string_op)(*this));
Chris@16:           return; default:
Chris@16:           streambuf_.commit(bytes_transferred);
Chris@16:           if (ec || bytes_transferred == 0)
Chris@16:             break;
Chris@16:         }
Chris@16: 
Chris@16:         const boost::system::error_code result_ec =
Chris@16:           (search_position_ == not_found)
Chris@16:           ? error::not_found : ec;
Chris@16: 
Chris@16:         const std::size_t result_n =
Chris@16:           (ec || search_position_ == not_found)
Chris@16:           ? 0 : search_position_;
Chris@16: 
Chris@16:         handler_(result_ec, result_n);
Chris@16:       }
Chris@16:     }
Chris@16: 
Chris@16:   //private:
Chris@16:     AsyncReadStream& stream_;
Chris@16:     boost::asio::basic_streambuf<Allocator>& streambuf_;
Chris@16:     std::string delim_;
Chris@16:     int start_;
Chris@16:     std::size_t search_position_;
Chris@16:     ReadHandler handler_;
Chris@16:   };
Chris@16: 
Chris@16:   template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
Chris@16:   inline void* asio_handler_allocate(std::size_t size,
Chris@16:       read_until_delim_string_op<AsyncReadStream,
Chris@16:         Allocator, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     return boost_asio_handler_alloc_helpers::allocate(
Chris@16:         size, this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
Chris@16:   inline void asio_handler_deallocate(void* pointer, std::size_t size,
Chris@16:       read_until_delim_string_op<AsyncReadStream,
Chris@16:         Allocator, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     boost_asio_handler_alloc_helpers::deallocate(
Chris@16:         pointer, size, this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
Chris@16:   inline bool asio_handler_is_continuation(
Chris@16:       read_until_delim_string_op<AsyncReadStream,
Chris@16:         Allocator, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     return this_handler->start_ == 0 ? true
Chris@16:       : boost_asio_handler_cont_helpers::is_continuation(
Chris@16:           this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename Function, typename AsyncReadStream,
Chris@16:       typename Allocator, typename ReadHandler>
Chris@16:   inline void asio_handler_invoke(Function& function,
Chris@16:       read_until_delim_string_op<AsyncReadStream,
Chris@16:         Allocator, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     boost_asio_handler_invoke_helpers::invoke(
Chris@16:         function, this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename Function, typename AsyncReadStream,
Chris@16:       typename Allocator, typename ReadHandler>
Chris@16:   inline void asio_handler_invoke(const Function& function,
Chris@16:       read_until_delim_string_op<AsyncReadStream,
Chris@16:         Allocator, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     boost_asio_handler_invoke_helpers::invoke(
Chris@16:         function, this_handler->handler_);
Chris@16:   }
Chris@16: } // namespace detail
Chris@16: 
Chris@16: template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
Chris@16: BOOST_ASIO_INITFN_RESULT_TYPE(ReadHandler,
Chris@16:     void (boost::system::error_code, std::size_t))
Chris@16: async_read_until(AsyncReadStream& s,
Chris@16:     boost::asio::basic_streambuf<Allocator>& b, const std::string& delim,
Chris@16:     BOOST_ASIO_MOVE_ARG(ReadHandler) handler)
Chris@16: {
Chris@16:   // If you get an error on the following line it means that your handler does
Chris@16:   // not meet the documented type requirements for a ReadHandler.
Chris@16:   BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
Chris@16: 
Chris@16:   detail::async_result_init<
Chris@16:     ReadHandler, void (boost::system::error_code, std::size_t)> init(
Chris@16:       BOOST_ASIO_MOVE_CAST(ReadHandler)(handler));
Chris@16: 
Chris@16:   detail::read_until_delim_string_op<AsyncReadStream,
Chris@16:     Allocator, BOOST_ASIO_HANDLER_TYPE(ReadHandler,
Chris@16:       void (boost::system::error_code, std::size_t))>(
Chris@16:         s, b, delim, init.handler)(
Chris@16:           boost::system::error_code(), 0, 1);
Chris@16: 
Chris@16:   return init.result.get();
Chris@16: }
Chris@16: 
Chris@16: #if defined(BOOST_ASIO_HAS_BOOST_REGEX)
Chris@16: 
Chris@16: namespace detail
Chris@16: {
Chris@16:   template <typename AsyncReadStream, typename Allocator,
Chris@16:       typename RegEx, typename ReadHandler>
Chris@16:   class read_until_expr_op
Chris@16:   {
Chris@16:   public:
Chris@16:     read_until_expr_op(AsyncReadStream& stream,
Chris@16:         boost::asio::basic_streambuf<Allocator>& streambuf,
Chris@16:         const boost::regex& expr, ReadHandler& handler)
Chris@16:       : stream_(stream),
Chris@16:         streambuf_(streambuf),
Chris@16:         expr_(expr),
Chris@16:         start_(0),
Chris@16:         search_position_(0),
Chris@16:         handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
Chris@16:     {
Chris@16:     }
Chris@16: 
Chris@16: #if defined(BOOST_ASIO_HAS_MOVE)
Chris@16:     read_until_expr_op(const read_until_expr_op& other)
Chris@16:       : stream_(other.stream_),
Chris@16:         streambuf_(other.streambuf_),
Chris@16:         expr_(other.expr_),
Chris@16:         start_(other.start_),
Chris@16:         search_position_(other.search_position_),
Chris@16:         handler_(other.handler_)
Chris@16:     {
Chris@16:     }
Chris@16: 
Chris@16:     read_until_expr_op(read_until_expr_op&& other)
Chris@16:       : stream_(other.stream_),
Chris@16:         streambuf_(other.streambuf_),
Chris@16:         expr_(other.expr_),
Chris@16:         start_(other.start_),
Chris@16:         search_position_(other.search_position_),
Chris@16:         handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
Chris@16:     {
Chris@16:     }
Chris@16: #endif // defined(BOOST_ASIO_HAS_MOVE)
Chris@16: 
Chris@16:     void operator()(const boost::system::error_code& ec,
Chris@16:         std::size_t bytes_transferred, int start = 0)
Chris@16:     {
Chris@16:       const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
Chris@16:       std::size_t bytes_to_read;
Chris@16:       switch (start_ = start)
Chris@16:       {
Chris@16:       case 1:
Chris@16:         for (;;)
Chris@16:         {
Chris@16:           {
Chris@16:             // Determine the range of the data to be searched.
Chris@16:             typedef typename boost::asio::basic_streambuf<
Chris@16:               Allocator>::const_buffers_type const_buffers_type;
Chris@16:             typedef boost::asio::buffers_iterator<const_buffers_type> iterator;
Chris@16:             const_buffers_type buffers = streambuf_.data();
Chris@16:             iterator begin = iterator::begin(buffers);
Chris@16:             iterator start_pos = begin + search_position_;
Chris@16:             iterator end = iterator::end(buffers);
Chris@16: 
Chris@16:             // Look for a match.
Chris@16:             boost::match_results<iterator,
Chris@16:               typename std::vector<boost::sub_match<iterator> >::allocator_type>
Chris@16:                 match_results;
Chris@16:             bool match = regex_search(start_pos, end, match_results, expr_,
Chris@16:                 boost::match_default | boost::match_partial);
Chris@16:             if (match && match_results[0].matched)
Chris@16:             {
Chris@16:               // Full match. We're done.
Chris@16:               search_position_ = match_results[0].second - begin;
Chris@16:               bytes_to_read = 0;
Chris@16:             }
Chris@16: 
Chris@16:             // No match yet. Check if buffer is full.
Chris@16:             else if (streambuf_.size() == streambuf_.max_size())
Chris@16:             {
Chris@16:               search_position_ = not_found;
Chris@16:               bytes_to_read = 0;
Chris@16:             }
Chris@16: 
Chris@16:             // Need to read some more data.
Chris@16:             else
Chris@16:             {
Chris@16:               if (match)
Chris@16:               {
Chris@16:                 // Partial match. Next search needs to start from beginning of
Chris@16:                 // match.
Chris@16:                 search_position_ = match_results[0].first - begin;
Chris@16:               }
Chris@16:               else
Chris@16:               {
Chris@16:                 // Next search can start with the new data.
Chris@16:                 search_position_ = end - begin;
Chris@16:               }
Chris@16: 
Chris@16:               bytes_to_read = read_size_helper(streambuf_, 65536);
Chris@16:             }
Chris@16:           }
Chris@16: 
Chris@16:           // Check if we're done.
Chris@16:           if (!start && bytes_to_read == 0)
Chris@16:             break;
Chris@16: 
Chris@16:           // Start a new asynchronous read operation to obtain more data.
Chris@16:           stream_.async_read_some(streambuf_.prepare(bytes_to_read),
Chris@16:               BOOST_ASIO_MOVE_CAST(read_until_expr_op)(*this));
Chris@16:           return; default:
Chris@16:           streambuf_.commit(bytes_transferred);
Chris@16:           if (ec || bytes_transferred == 0)
Chris@16:             break;
Chris@16:         }
Chris@16: 
Chris@16:         const boost::system::error_code result_ec =
Chris@16:           (search_position_ == not_found)
Chris@16:           ? error::not_found : ec;
Chris@16: 
Chris@16:         const std::size_t result_n =
Chris@16:           (ec || search_position_ == not_found)
Chris@16:           ? 0 : search_position_;
Chris@16: 
Chris@16:         handler_(result_ec, result_n);
Chris@16:       }
Chris@16:     }
Chris@16: 
Chris@16:   //private:
Chris@16:     AsyncReadStream& stream_;
Chris@16:     boost::asio::basic_streambuf<Allocator>& streambuf_;
Chris@16:     RegEx expr_;
Chris@16:     int start_;
Chris@16:     std::size_t search_position_;
Chris@16:     ReadHandler handler_;
Chris@16:   };
Chris@16: 
Chris@16:   template <typename AsyncReadStream, typename Allocator,
Chris@16:       typename RegEx, typename ReadHandler>
Chris@16:   inline void* asio_handler_allocate(std::size_t size,
Chris@16:       read_until_expr_op<AsyncReadStream,
Chris@16:         Allocator, RegEx, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     return boost_asio_handler_alloc_helpers::allocate(
Chris@16:         size, this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename AsyncReadStream, typename Allocator,
Chris@16:       typename RegEx, typename ReadHandler>
Chris@16:   inline void asio_handler_deallocate(void* pointer, std::size_t size,
Chris@16:       read_until_expr_op<AsyncReadStream,
Chris@16:         Allocator, RegEx, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     boost_asio_handler_alloc_helpers::deallocate(
Chris@16:         pointer, size, this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename AsyncReadStream, typename Allocator,
Chris@16:       typename RegEx, typename ReadHandler>
Chris@16:   inline bool asio_handler_is_continuation(
Chris@16:       read_until_expr_op<AsyncReadStream,
Chris@16:         Allocator, RegEx, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     return this_handler->start_ == 0 ? true
Chris@16:       : boost_asio_handler_cont_helpers::is_continuation(
Chris@16:           this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename Function, typename AsyncReadStream, typename Allocator,
Chris@16:       typename RegEx, typename ReadHandler>
Chris@16:   inline void asio_handler_invoke(Function& function,
Chris@16:       read_until_expr_op<AsyncReadStream,
Chris@16:         Allocator, RegEx, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     boost_asio_handler_invoke_helpers::invoke(
Chris@16:         function, this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename Function, typename AsyncReadStream, typename Allocator,
Chris@16:       typename RegEx, typename ReadHandler>
Chris@16:   inline void asio_handler_invoke(const Function& function,
Chris@16:       read_until_expr_op<AsyncReadStream,
Chris@16:         Allocator, RegEx, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     boost_asio_handler_invoke_helpers::invoke(
Chris@16:         function, this_handler->handler_);
Chris@16:   }
Chris@16: } // namespace detail
Chris@16: 
Chris@16: template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
Chris@16: BOOST_ASIO_INITFN_RESULT_TYPE(ReadHandler,
Chris@16:     void (boost::system::error_code, std::size_t))
Chris@16: async_read_until(AsyncReadStream& s,
Chris@16:     boost::asio::basic_streambuf<Allocator>& b, const boost::regex& expr,
Chris@16:     BOOST_ASIO_MOVE_ARG(ReadHandler) handler)
Chris@16: {
Chris@16:   // If you get an error on the following line it means that your handler does
Chris@16:   // not meet the documented type requirements for a ReadHandler.
Chris@16:   BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
Chris@16: 
Chris@16:   detail::async_result_init<
Chris@16:     ReadHandler, void (boost::system::error_code, std::size_t)> init(
Chris@16:       BOOST_ASIO_MOVE_CAST(ReadHandler)(handler));
Chris@16: 
Chris@16:   detail::read_until_expr_op<AsyncReadStream, Allocator,
Chris@16:     boost::regex, BOOST_ASIO_HANDLER_TYPE(ReadHandler,
Chris@16:       void (boost::system::error_code, std::size_t))>(
Chris@16:         s, b, expr, init.handler)(
Chris@16:           boost::system::error_code(), 0, 1);
Chris@16: 
Chris@16:   return init.result.get();
Chris@16: }
Chris@16: 
Chris@16: #endif // defined(BOOST_ASIO_HAS_BOOST_REGEX)
Chris@16: 
Chris@16: namespace detail
Chris@16: {
Chris@16:   template <typename AsyncReadStream, typename Allocator,
Chris@16:       typename MatchCondition, typename ReadHandler>
Chris@16:   class read_until_match_op
Chris@16:   {
Chris@16:   public:
Chris@16:     read_until_match_op(AsyncReadStream& stream,
Chris@16:         boost::asio::basic_streambuf<Allocator>& streambuf,
Chris@16:         MatchCondition match_condition, ReadHandler& handler)
Chris@16:       : stream_(stream),
Chris@16:         streambuf_(streambuf),
Chris@16:         match_condition_(match_condition),
Chris@16:         start_(0),
Chris@16:         search_position_(0),
Chris@16:         handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
Chris@16:     {
Chris@16:     }
Chris@16: 
Chris@16: #if defined(BOOST_ASIO_HAS_MOVE)
Chris@16:     read_until_match_op(const read_until_match_op& other)
Chris@16:       : stream_(other.stream_),
Chris@16:         streambuf_(other.streambuf_),
Chris@16:         match_condition_(other.match_condition_),
Chris@16:         start_(other.start_),
Chris@16:         search_position_(other.search_position_),
Chris@16:         handler_(other.handler_)
Chris@16:     {
Chris@16:     }
Chris@16: 
Chris@16:     read_until_match_op(read_until_match_op&& other)
Chris@16:       : stream_(other.stream_),
Chris@16:         streambuf_(other.streambuf_),
Chris@16:         match_condition_(other.match_condition_),
Chris@16:         start_(other.start_),
Chris@16:         search_position_(other.search_position_),
Chris@16:         handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
Chris@16:     {
Chris@16:     }
Chris@16: #endif // defined(BOOST_ASIO_HAS_MOVE)
Chris@16: 
Chris@16:     void operator()(const boost::system::error_code& ec,
Chris@16:         std::size_t bytes_transferred, int start = 0)
Chris@16:     {
Chris@16:       const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
Chris@16:       std::size_t bytes_to_read;
Chris@16:       switch (start_ = start)
Chris@16:       {
Chris@16:       case 1:
Chris@16:         for (;;)
Chris@16:         {
Chris@16:           {
Chris@16:             // Determine the range of the data to be searched.
Chris@16:             typedef typename boost::asio::basic_streambuf<
Chris@16:               Allocator>::const_buffers_type const_buffers_type;
Chris@16:             typedef boost::asio::buffers_iterator<const_buffers_type> iterator;
Chris@16:             const_buffers_type buffers = streambuf_.data();
Chris@16:             iterator begin = iterator::begin(buffers);
Chris@16:             iterator start_pos = begin + search_position_;
Chris@16:             iterator end = iterator::end(buffers);
Chris@16: 
Chris@16:             // Look for a match.
Chris@16:             std::pair<iterator, bool> result = match_condition_(start_pos, end);
Chris@16:             if (result.second)
Chris@16:             {
Chris@16:               // Full match. We're done.
Chris@16:               search_position_ = result.first - begin;
Chris@16:               bytes_to_read = 0;
Chris@16:             }
Chris@16: 
Chris@16:             // No match yet. Check if buffer is full.
Chris@16:             else if (streambuf_.size() == streambuf_.max_size())
Chris@16:             {
Chris@16:               search_position_ = not_found;
Chris@16:               bytes_to_read = 0;
Chris@16:             }
Chris@16: 
Chris@16:             // Need to read some more data.
Chris@16:             else
Chris@16:             {
Chris@16:               if (result.first != end)
Chris@16:               {
Chris@16:                 // Partial match. Next search needs to start from beginning of
Chris@16:                 // match.
Chris@16:                 search_position_ = result.first - begin;
Chris@16:               }
Chris@16:               else
Chris@16:               {
Chris@16:                 // Next search can start with the new data.
Chris@16:                 search_position_ = end - begin;
Chris@16:               }
Chris@16: 
Chris@16:               bytes_to_read = read_size_helper(streambuf_, 65536);
Chris@16:             }
Chris@16:           }
Chris@16: 
Chris@16:           // Check if we're done.
Chris@16:           if (!start && bytes_to_read == 0)
Chris@16:             break;
Chris@16: 
Chris@16:           // Start a new asynchronous read operation to obtain more data.
Chris@16:           stream_.async_read_some(streambuf_.prepare(bytes_to_read),
Chris@16:               BOOST_ASIO_MOVE_CAST(read_until_match_op)(*this));
Chris@16:           return; default:
Chris@16:           streambuf_.commit(bytes_transferred);
Chris@16:           if (ec || bytes_transferred == 0)
Chris@16:             break;
Chris@16:         }
Chris@16: 
Chris@16:         const boost::system::error_code result_ec =
Chris@16:           (search_position_ == not_found)
Chris@16:           ? error::not_found : ec;
Chris@16: 
Chris@16:         const std::size_t result_n =
Chris@16:           (ec || search_position_ == not_found)
Chris@16:           ? 0 : search_position_;
Chris@16: 
Chris@16:         handler_(result_ec, result_n);
Chris@16:       }
Chris@16:     }
Chris@16: 
Chris@16:   //private:
Chris@16:     AsyncReadStream& stream_;
Chris@16:     boost::asio::basic_streambuf<Allocator>& streambuf_;
Chris@16:     MatchCondition match_condition_;
Chris@16:     int start_;
Chris@16:     std::size_t search_position_;
Chris@16:     ReadHandler handler_;
Chris@16:   };
Chris@16: 
Chris@16:   template <typename AsyncReadStream, typename Allocator,
Chris@16:       typename MatchCondition, typename ReadHandler>
Chris@16:   inline void* asio_handler_allocate(std::size_t size,
Chris@16:       read_until_match_op<AsyncReadStream,
Chris@16:         Allocator, MatchCondition, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     return boost_asio_handler_alloc_helpers::allocate(
Chris@16:         size, this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename AsyncReadStream, typename Allocator,
Chris@16:       typename MatchCondition, typename ReadHandler>
Chris@16:   inline void asio_handler_deallocate(void* pointer, std::size_t size,
Chris@16:       read_until_match_op<AsyncReadStream,
Chris@16:         Allocator, MatchCondition, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     boost_asio_handler_alloc_helpers::deallocate(
Chris@16:         pointer, size, this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename AsyncReadStream, typename Allocator,
Chris@16:       typename MatchCondition, typename ReadHandler>
Chris@16:   inline bool asio_handler_is_continuation(
Chris@16:       read_until_match_op<AsyncReadStream,
Chris@16:         Allocator, MatchCondition, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     return this_handler->start_ == 0 ? true
Chris@16:       : boost_asio_handler_cont_helpers::is_continuation(
Chris@16:           this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename Function, typename AsyncReadStream, typename Allocator,
Chris@16:       typename MatchCondition, typename ReadHandler>
Chris@16:   inline void asio_handler_invoke(Function& function,
Chris@16:       read_until_match_op<AsyncReadStream,
Chris@16:         Allocator, MatchCondition, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     boost_asio_handler_invoke_helpers::invoke(
Chris@16:         function, this_handler->handler_);
Chris@16:   }
Chris@16: 
Chris@16:   template <typename Function, typename AsyncReadStream, typename Allocator,
Chris@16:       typename MatchCondition, typename ReadHandler>
Chris@16:   inline void asio_handler_invoke(const Function& function,
Chris@16:       read_until_match_op<AsyncReadStream,
Chris@16:         Allocator, MatchCondition, ReadHandler>* this_handler)
Chris@16:   {
Chris@16:     boost_asio_handler_invoke_helpers::invoke(
Chris@16:         function, this_handler->handler_);
Chris@16:   }
Chris@16: } // namespace detail
Chris@16: 
Chris@16: template <typename AsyncReadStream, typename Allocator,
Chris@16:     typename MatchCondition, typename ReadHandler>
Chris@16: BOOST_ASIO_INITFN_RESULT_TYPE(ReadHandler,
Chris@16:     void (boost::system::error_code, std::size_t))
Chris@16: async_read_until(AsyncReadStream& s,
Chris@16:     boost::asio::basic_streambuf<Allocator>& b,
Chris@16:     MatchCondition match_condition, BOOST_ASIO_MOVE_ARG(ReadHandler) handler,
Chris@16:     typename enable_if<is_match_condition<MatchCondition>::value>::type*)
Chris@16: {
Chris@16:   // If you get an error on the following line it means that your handler does
Chris@16:   // not meet the documented type requirements for a ReadHandler.
Chris@16:   BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
Chris@16: 
Chris@16:   detail::async_result_init<
Chris@16:     ReadHandler, void (boost::system::error_code, std::size_t)> init(
Chris@16:       BOOST_ASIO_MOVE_CAST(ReadHandler)(handler));
Chris@16: 
Chris@16:   detail::read_until_match_op<AsyncReadStream, Allocator,
Chris@16:     MatchCondition, BOOST_ASIO_HANDLER_TYPE(ReadHandler,
Chris@16:       void (boost::system::error_code, std::size_t))>(
Chris@16:         s, b, match_condition, init.handler)(
Chris@16:           boost::system::error_code(), 0, 1);
Chris@16: 
Chris@16:   return init.result.get();
Chris@16: }
Chris@16: 
Chris@16: } // namespace asio
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #include <boost/asio/detail/pop_options.hpp>
Chris@16: 
Chris@16: #endif // BOOST_ASIO_IMPL_READ_UNTIL_HPP