RequestParser.hpp

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#ifndef __AIRINV_SVR_REQUESTPARSER_HPP
#define __AIRINV_SVR_REQUESTPARSER_HPP

// //////////////////////////////////////////////////////////////////////
// Import section
// //////////////////////////////////////////////////////////////////////
// STL
// Boost
#include <boost/logic/tribool.hpp>
#include <boost/tuple/tuple.hpp>

namespace AIRINV {

  struct Request;

  class RequestParser {
  public:
    RequestParser();

    void reset();

    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:
    boost::tribool consume (Request& req, char input);

    static bool is_char(int c);

    static bool is_ctl(int c);

    static bool is_tspecial(int c);

    static bool is_digit(int c);

    enum state {
      method_start,
      method,
      uri_start,
      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_;
  };

}
#endif // __AIRINV_SVR_REQUESTPARSER_HPP