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Diffstat (limited to '3rdparty/asio/src/examples/cpp03/http/server/request_parser.hpp')
-rw-r--r-- | 3rdparty/asio/src/examples/cpp03/http/server/request_parser.hpp | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/3rdparty/asio/src/examples/cpp03/http/server/request_parser.hpp b/3rdparty/asio/src/examples/cpp03/http/server/request_parser.hpp new file mode 100644 index 00000000000..d7da53cf030 --- /dev/null +++ b/3rdparty/asio/src/examples/cpp03/http/server/request_parser.hpp @@ -0,0 +1,95 @@ +// +// request_parser.hpp +// ~~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2016 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 HTTP_REQUEST_PARSER_HPP +#define HTTP_REQUEST_PARSER_HPP + +#include <boost/logic/tribool.hpp> +#include <boost/tuple/tuple.hpp> + +namespace http { +namespace server { + +struct request; + +/// Parser for incoming requests. +class request_parser +{ +public: + /// Construct ready to parse the request method. + request_parser(); + + /// Reset to initial parser state. + void reset(); + + /// Parse some data. The tribool return value is true when a complete request + /// has been parsed, false if the data is invalid, indeterminate when more + /// data is required. The InputIterator return value indicates how much of the + /// input has been consumed. + template <typename InputIterator> + boost::tuple<boost::tribool, InputIterator> parse(request& req, + InputIterator begin, InputIterator end) + { + while (begin != end) + { + boost::tribool result = consume(req, *begin++); + if (result || !result) + return boost::make_tuple(result, begin); + } + boost::tribool result = boost::indeterminate; + return boost::make_tuple(result, begin); + } + +private: + /// Handle the next character of input. + boost::tribool consume(request& req, char input); + + /// Check if a byte is an HTTP character. + static bool is_char(int c); + + /// Check if a byte is an HTTP control character. + static bool is_ctl(int c); + + /// Check if a byte is defined as an HTTP tspecial character. + static bool is_tspecial(int c); + + /// Check if a byte is a digit. + static bool is_digit(int c); + + /// The current state of the parser. + enum state + { + method_start, + method, + uri, + http_version_h, + http_version_t_1, + http_version_t_2, + http_version_p, + http_version_slash, + http_version_major_start, + http_version_major, + http_version_minor_start, + http_version_minor, + expecting_newline_1, + header_line_start, + header_lws, + header_name, + space_before_header_value, + header_value, + expecting_newline_2, + expecting_newline_3 + } state_; +}; + +} // namespace server +} // namespace http + +#endif // HTTP_REQUEST_PARSER_HPP |