RESTinio
user-agent.hpp
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1/*
2 * RESTinio
3 */
4
12#pragma once
13
15
16#include <restinio/variant.hpp>
17
18namespace restinio
19{
20
21namespace http_field_parsers
22{
23
24//
25// user_agent_value_t
26//
42{
48 struct product_t
49 {
50 std::string product;
52 };
53
60
62 std::vector< tail_item_t > tail;
63
70 static auto
72 {
73 auto product_producer = produce< product_t >(
75 maybe(
76 symbol('/'),
78 )
79 );
80
81 return produce< user_agent_value_t >(
82 product_producer >> &user_agent_value_t::product,
83 produce< std::vector< tail_item_t > >(
84 repeat( 0, N,
85 space(),
86 ows(),
88 product_producer >> to_container(),
90 )
91 )
93 );
94 }
95
104 {
106 }
107};
108
109} /* namespace http_field_parsers */
110
111} /* namespace restinio */
112
Utilities for parsing values of http-fields.
#define RESTINIO_NODISCARD
RESTINIO_NODISCARD auto maybe(Clauses &&... clauses)
A factory function to create an optional clause.
RESTINIO_NODISCARD auto symbol(char expected) noexcept
A factory function to create a clause that expects the speficied symbol, extracts it and then skips i...
RESTINIO_NODISCARD auto produce(Clauses &&... clauses)
A factory function to create a producer that creates an instance of the target type by using specifie...
RESTINIO_NODISCARD auto space() noexcept
A factory function to create a clause that expects a space, extracts it and then skips it.
RESTINIO_NODISCARD expected_t< typename Producer::result_type, parse_error_t > try_parse(string_view_t from, Producer producer)
Perform the parsing of the specified content by using specified value producer.
RESTINIO_NODISCARD auto repeat(std::size_t min_occurences, std::size_t max_occurences, Clauses &&... clauses)
A factory function to create repetitor of subclauses.
constexpr std::size_t N
A special marker that means infinite repetitions.
RESTINIO_NODISCARD auto to_container()
A factory function to create a to_container_consumer.
RESTINIO_NODISCARD auto alternatives(Clauses &&... clauses)
A factory function to create an alternatives clause.
RESTINIO_NODISCARD auto comment_p()
A factory for producer of comment token.
Definition: basics.hpp:880
RESTINIO_NODISCARD auto ows() noexcept
A factory function to create an OWS clause.
Definition: basics.hpp:939
RESTINIO_NODISCARD auto token_p() noexcept
A factory function to create a token_producer.
Definition: basics.hpp:985
nonstd::string_view string_view_t
Definition: string_view.hpp:19
nonstd::expected< T, E > expected_t
Definition: expected.hpp:22
A type for holding an info about a product.
Definition: user-agent.hpp:49
restinio::optional_t< std::string > product_version
Definition: user-agent.hpp:51
Tools for working with the value of User-Agent HTTP-field.
Definition: user-agent.hpp:42
static RESTINIO_NODISCARD expected_t< user_agent_value_t, restinio::easy_parser::parse_error_t > try_parse(string_view_t what)
An attempt to parse User-Agent HTTP-field.
Definition: user-agent.hpp:103
static RESTINIO_NODISCARD auto make_parser()
A factory function for a parser of User-Agent value.
Definition: user-agent.hpp:71