include/boost/url/rfc/detail/impl/ipv6_addrz_rule.hpp

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include/boost/url/rfc/detail/impl/ipv6_addrz_rule.hpp
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1 //
2 // Copyright (c) 2023 Alan de Freitas (alandefreitas@gmail.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_IMPL_IPV6_ADDRZ_RULE_HPP
11 #define BOOST_URL_RFC_DETAIL_IMPL_IPV6_ADDRZ_RULE_HPP
12
13 #include <boost/url/detail/config.hpp>
14 #include <boost/url/grammar/error.hpp>
15 #include <boost/url/grammar/parse.hpp>
16 #include <boost/url/rfc/ipv6_address_rule.hpp>
17 #include <boost/url/rfc/unreserved_chars.hpp>
18 #include <boost/url/rfc/pct_encoded_rule.hpp>
19
20 namespace boost {
21 namespace urls {
22 namespace detail {
23
24 BOOST_URL_CXX20_CONSTEXPR_OR_INLINE
25 auto
26 29 ipv6_addrz_rule_t::
27 parse(
28 char const*& it,
29 char const* const end
30 ) const noexcept ->
31 system::result<value_type>
32 {
33 29 value_type t;
34 29 auto rv1 = grammar::parse(
35 it, end, ipv6_address_rule);
36 29 if (! rv1)
37 17 return rv1.error();
38 12 t.ipv6 = *rv1;
39
40 // "%25"
41 12 auto it0 = it;
42 12 if (end - it < 3 ||
43 10 *it != '%' ||
44 7 *(it + 1) != '2' ||
45 6 *(it + 2) != '5')
46 {
47 6 BOOST_URL_CONSTEXPR_RETURN_EC(
48 grammar::error::invalid);
49 }
50 6 it += 3;
51
52 // ZoneID = 1*( unreserved / pct-encoded )
53 // Parse as many (unreserved / pct-encoded)
54 // as available
55 6 auto rv2 = grammar::parse(
56 it, end,
57 6 pct_encoded_rule(unreserved_chars));
58 6 if(!rv2 || rv2->empty())
59 {
60 1 it = it0;
61 1 BOOST_URL_CONSTEXPR_RETURN_EC(
62 grammar::error::invalid);
63 }
64 else
65 {
66 5 t.zone_id = *rv2;
67 }
68 5 return t;
69 }
70
71 } // detail
72 } // urls
73 } // boost
74
75
76 #endif
77