146 lines
6.0 KiB
C++
146 lines
6.0 KiB
C++
// Copyright (c) 2014-2016 Dr. Colin Hirsch and Daniel Frey
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// Please see LICENSE for license or visit https://github.com/ColinH/PEGTL/
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#ifndef TAO_CPP_PEGTL_CONTRIB_HTTP_HH
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#define TAO_CPP_PEGTL_CONTRIB_HTTP_HH
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#include "../rules.hh"
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#include "../ascii.hh"
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#include "../utf8.hh"
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#include "abnf.hh"
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#include "uri.hh"
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namespace tao_json_pegtl
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{
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namespace http
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{
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// HTTP 1.1 grammar according to RFC 7230.
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// This grammar is a direct PEG translation of the original HTTP grammar.
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// It should be considered experimental -- in case of any issues, in particular
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// missing anchor rules for actions, please contact the developers.
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using namespace abnf;
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using OWS = star< WSP >; // optional whitespace
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using RWS = plus< WSP >; // required whitespace
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using BWS = OWS; // "bad" whitespace
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// cppcheck-suppress constStatement
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using obs_text = not_range< 0x00, 0x7F >;
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using obs_fold = seq< CRLF, plus< WSP > >;
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struct tchar : sor< ALPHA, DIGIT, one< '!', '#', '$', '%', '&', '\'', '*', '+', '-', '.', '^', '_', '`', '|', '~' > > {};
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struct token : plus< tchar > {};
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struct field_name : token {};
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struct field_vchar : sor< VCHAR, obs_text > {};
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struct field_content : list< field_vchar, plus< WSP > > {};
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struct field_value : star< sor< field_content, obs_fold > > {};
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struct header_field : seq< field_name, one< ':' >, OWS, field_value, OWS > {};
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struct method : token {};
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struct absolute_path : plus< one< '/' >, uri::segment > {};
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struct origin_form : seq< absolute_path, uri::opt_query > {};
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struct absolute_form : uri::absolute_URI {};
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struct authority_form : uri::authority {};
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struct asterisk_form : one< '*' > {};
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struct request_target : sor< origin_form, absolute_form, authority_form, asterisk_form > {};
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struct status_code : rep< 3, DIGIT > {};
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struct reason_phrase : star< sor< VCHAR, obs_text, WSP > > {};
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struct HTTP_version : if_must< pegtl_string_t( "HTTP/" ), DIGIT, one< '.' >, DIGIT > {};
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struct request_line : if_must< method, SP, request_target, SP, HTTP_version, CRLF > {};
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struct status_line : if_must< HTTP_version, SP, status_code, SP, reason_phrase, CRLF > {};
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struct start_line : sor< request_line, status_line > {};
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struct message_body : star< OCTET > {};
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struct HTTP_message : seq< start_line, star< header_field, CRLF >, CRLF, opt< message_body > > {};
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struct Content_Length : plus< DIGIT > {};
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struct uri_host : uri::host {};
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struct port : uri::port {};
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struct Host : seq< uri_host, opt< one< ':' >, port > > {};
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// PEG are different from CFGs! (this replaces ctext and qdtext)
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using text = sor< HTAB, range< 0x20, 0x7E >, obs_text >;
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struct quoted_pair : if_must< one< '\\' >, sor< VCHAR, obs_text, WSP > > {};
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struct quoted_string : if_must< DQUOTE, until< DQUOTE, sor< quoted_pair, text > > > {};
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struct transfer_parameter : seq< token, BWS, one< '=' >, BWS, sor< token, quoted_string > > {};
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struct transfer_extension : seq< token, star< OWS, one< ';' >, OWS, transfer_parameter > > {};
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struct transfer_coding : sor< pegtl_istring_t( "chunked" ),
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pegtl_istring_t( "compress" ),
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pegtl_istring_t( "deflate" ),
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pegtl_istring_t( "gzip" ),
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transfer_extension > {};
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struct rank : sor< seq< one< '0' >, opt< one< '.' >, rep_opt< 3, DIGIT > > >,
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seq< one< '1' >, opt< one< '.' >, rep_opt< 3, one< '0' > > > > > {};
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struct t_ranking : seq< OWS, one< ';' >, OWS, one< 'q', 'Q' >, one< '=' >, rank > {};
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struct t_codings : sor< pegtl_istring_t( "trailers" ), seq< transfer_coding, opt< t_ranking > > > {};
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struct TE : opt< sor< one< ',' >, t_codings >, star< OWS, one< ',' >, opt< OWS, t_codings > > > {};
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template< typename T >
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using make_comma_list = seq< star< one< ',' >, OWS >, T, star< OWS, one< ',' >, opt< OWS, T > > >;
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struct connection_option : token {};
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struct Connection : make_comma_list< connection_option > {};
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struct Trailer : make_comma_list< field_name > {};
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struct Transfer_Encoding : make_comma_list< transfer_coding > {};
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struct protocol_name : token {};
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struct protocol_version : token {};
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struct protocol : seq< protocol_name, opt< one< '/' >, protocol_version > > {};
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struct Upgrade : make_comma_list< protocol > {};
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struct pseudonym : token {};
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struct received_protocol : seq< opt< protocol_name, one< '/' > >, protocol_version > {};
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struct received_by : sor< seq< uri_host, opt< one< ':' >, port > >, pseudonym > {};
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struct comment : if_must< one< '(' >, until< one< ')' >, sor< comment, quoted_pair, text > > > {};
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struct Via : make_comma_list< seq< received_protocol, RWS, received_by, opt< RWS, comment > > > {};
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struct http_URI : if_must< pegtl_istring_t( "http://" ), uri::authority, uri::path_abempty, uri::opt_query, uri::opt_fragment > {};
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struct https_URI : if_must< pegtl_istring_t( "https://" ), uri::authority, uri::path_abempty, uri::opt_query, uri::opt_fragment > {};
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struct partial_URI : seq< uri::relative_part, uri::opt_query > {};
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struct chunk_size : plus< HEXDIG > {};
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struct chunk_ext_name : token {};
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struct chunk_ext_val : sor< quoted_string, token > {};
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struct chunk_ext : star< if_must< one< ';' >, chunk_ext_name, if_must< one< '=' >, chunk_ext_val > > > {};
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struct chunk_data : until< at< CRLF >, OCTET > {};
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struct chunk : seq< chunk_size, opt< chunk_ext >, CRLF, chunk_data, CRLF > {};
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struct last_chunk : seq< plus< one< '0' > >, opt< chunk_ext >, CRLF > {};
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struct trailer_part : star< header_field, CRLF > {};
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struct chunked_body : seq< until< last_chunk, chunk >, trailer_part, CRLF > {};
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} // namespace http
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} // namespace tao_json_pegtl
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#endif
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