1 + 
//
 
2 + 
// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
 
3 + 
// Copyright (c) 2023 Alan de Freitas (alandefreitas@gmail.com)
 
4 + 
//
 
5 + 
// Distributed under the Boost Software License, Version 1.0. (See accompanying
 
6 + 
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
7 + 
//
 
8 + 
// Official repository: https://github.com/boostorg/url
 
9 + 
//
 
10 +
 
11 + 
#ifndef BOOST_URL_RFC_IMPL_QUERY_RULE_HPP
 
12 + 
#define BOOST_URL_RFC_IMPL_QUERY_RULE_HPP
 
13 +
 
14 + 
#include <boost/url/detail/config.hpp>
 
15 + 
#include <boost/url/rfc/detail/charsets.hpp>
 
16 + 
#include <boost/url/error.hpp>
 
17 + 
#include <boost/url/grammar/hexdig_chars.hpp>
 
18 +
 
19 + 
namespace boost {
 
20 + 
namespace urls {
 
21 +
 
22 + 
inline
 
23 + 
auto
 
24 + 
implementation_defined::query_rule_t::
 
25 + 
parse(
 
26 + 
    char const*& it,
 
27 + 
    char const* end
 
28 + 
        ) const noexcept ->
 
29 + 
    system::result<value_type>
 
30 + 
{
 
31 + 
    if(it == end)
 
32 + 
    {
 
33 + 
        core::string_view str(it, 0);
 
34 + 
        return params_encoded_view(
 
35 + 
            detail::query_ref(str, 0, 1));
 
36 + 
    }
 
37 + 
    auto const it0 = it;
 
38 + 
    std::size_t dn = 0;
 
39 + 
    std::size_t nparam = 1;
 
40 + 
    while(it != end)
 
41 + 
    {
 
42 + 
        if(*it == '&')
 
43 + 
        {
 
44 + 
            ++nparam;
 
45 + 
            ++it;
 
46 + 
            continue;
 
47 + 
        }
 
48 + 
        if(detail::query_chars(*it))
 
49 + 
        {
 
50 + 
            ++it;
 
51 + 
            continue;
 
52 + 
        }
 
53 + 
        if(*it == '%')
 
54 + 
        {
 
55 + 
            if(end - it < 3 ||
 
56 + 
                (!grammar::hexdig_chars(it[1]) ||
 
57 + 
                 !grammar::hexdig_chars(it[2])))
 
58 + 
            {
 
59 + 
                break;
 
60 + 
            }
 
61 + 
            it += 3;
 
62 + 
            dn += 2;
 
63 + 
            continue;
 
64 + 
        }
 
65 + 
        break;
 
66 + 
    }
 
67 + 
    std::size_t const n(it - it0);
 
68 + 
    core::string_view str(it0, n);
 
69 + 
    return params_encoded_view(
 
70 + 
        detail::query_ref(
 
71 + 
            str, n - dn, nparam));
 
72 + 
}
 
73 +
 
74 + 
} // urls
 
75 + 
} // boost
 
76 +
 
77 +
 
78 + 
#endif