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|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com) | ||
| 3 | // | ||
| 4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 6 | // | ||
| 7 | // Official repository: https://github.com/boostorg/url | ||
| 8 | // | ||
| 9 | |||
| 10 | #ifndef BOOST_URL_RFC_DETAIL_QUERY_PART_RULE_HPP | ||
| 11 | #define BOOST_URL_RFC_DETAIL_QUERY_PART_RULE_HPP | ||
| 12 | |||
| 13 | #include "boost/url/detail/config.hpp" | ||
| 14 | #include "boost/url/error_types.hpp" | ||
| 15 | #include "boost/url/pct_string_view.hpp" | ||
| 16 | #include "boost/url/rfc/query_rule.hpp" | ||
| 17 | #include "boost/url/grammar/parse.hpp" | ||
| 18 | #include <cstdlib> | ||
| 19 | |||
| 20 | namespace boost { | ||
| 21 | namespace urls { | ||
| 22 | namespace detail { | ||
| 23 | |||
| 24 | /** Rule for query-part | ||
| 25 | |||
| 26 | @par BNF | ||
| 27 | @code | ||
| 28 | query-part = [ "?" query ] | ||
| 29 | @endcode | ||
| 30 | */ | ||
| 31 | struct query_part_rule_t | ||
| 32 | { | ||
| 33 | struct value_type | ||
| 34 | { | ||
| 35 | pct_string_view query; | ||
| 36 | std::size_t count = 0; | ||
| 37 | bool has_query = false; | ||
| 38 | }; | ||
| 39 | |||
| 40 | auto | ||
| 41 | 3573 | parse( | |
| 42 | char const*& it, | ||
| 43 | char const* end | ||
| 44 | ) const noexcept -> | ||
| 45 | system::result<value_type> | ||
| 46 | { | ||
| 47 |
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3573 | if( it == end || |
| 48 |
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673 | *it != '?') |
| 49 | 3126 | return {}; | |
| 50 | 447 | ++it; | |
| 51 | 447 | auto rv = grammar::parse( | |
| 52 | it, end, query_rule); | ||
| 53 | // query_rule is optionally empty and must not fail | ||
| 54 |
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447 | BOOST_ASSERT( rv ); |
| 55 | 447 | value_type t; | |
| 56 | 447 | t.query = rv->buffer(); | |
| 57 | 447 | t.count = rv->size(); | |
| 58 | // a query_rule represents at least one parameter: | ||
| 59 | // <empty key, no value> | ||
| 60 |
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447 | BOOST_ASSERT( t.count ); |
| 61 | 447 | t.has_query = true; | |
| 62 | 447 | return t; | |
| 63 | } | ||
| 64 | }; | ||
| 65 | |||
| 66 | constexpr query_part_rule_t query_part_rule{}; | ||
| 67 | |||
| 68 | } // detail | ||
| 69 | } // urls | ||
| 70 | } // boost | ||
| 71 | |||
| 72 | #endif | ||
| 73 |