include/boost/url/rfc/detail/impl/h16_rule.hpp
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| Line | TLA | Hits | Source Code |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com) | ||
| 3 | // Copyright (c) 2024 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_DETAIL_IMPL_H16_RULE_HPP | ||
| 12 | #define BOOST_URL_RFC_DETAIL_IMPL_H16_RULE_HPP | ||
| 13 | |||
| 14 | #include <boost/url/detail/config.hpp> | ||
| 15 | #include <boost/url/grammar/error.hpp> | ||
| 16 | #include <boost/url/grammar/hexdig_chars.hpp> | ||
| 17 | |||
| 18 | namespace boost { | ||
| 19 | namespace urls { | ||
| 20 | namespace detail { | ||
| 21 | |||
| 22 | BOOST_URL_CXX20_CONSTEXPR_OR_INLINE | ||
| 23 | auto | ||
| 24 | 1318 | h16_rule_t:: | |
| 25 | parse( | ||
| 26 | char const*& it, | ||
| 27 | char const* end | ||
| 28 | ) const noexcept -> | ||
| 29 | system::result<value_type> | ||
| 30 | { | ||
| 31 | // LCOV_EXCL_START | ||
| 32 | // h16 is only called from ipv6_address_rule | ||
| 33 | // which ensures at least one char is available | ||
| 34 | − | if(it == end) | |
| 35 | { | ||
| 36 | − | BOOST_URL_CONSTEXPR_RETURN_EC( | |
| 37 | grammar::error::invalid); | ||
| 38 | } | ||
| 39 | // LCOV_EXCL_STOP | ||
| 40 | |||
| 41 | std::uint16_t v; | ||
| 42 | for(;;) | ||
| 43 | { | ||
| 44 | 1318 | auto d = grammar::hexdig_value(*it); | |
| 45 | 1318 | if(d < 0) | |
| 46 | { | ||
| 47 | // expected HEXDIG | ||
| 48 | 21 | BOOST_URL_CONSTEXPR_RETURN_EC( | |
| 49 | grammar::error::invalid); | ||
| 50 | } | ||
| 51 | 1297 | v = d; | |
| 52 | 1297 | ++it; | |
| 53 | 1297 | if(it == end) | |
| 54 | 78 | break; | |
| 55 | 1219 | d = grammar::hexdig_value(*it); | |
| 56 | 1219 | if(d < 0) | |
| 57 | 571 | break; | |
| 58 | 648 | v = (16 * v) + d; | |
| 59 | 648 | ++it; | |
| 60 | 648 | if(it == end) | |
| 61 | 4 | break; | |
| 62 | 644 | d = grammar::hexdig_value(*it); | |
| 63 | 644 | if(d < 0) | |
| 64 | 5 | break; | |
| 65 | 639 | v = (16 * v) + d; | |
| 66 | 639 | ++it; | |
| 67 | 639 | if(it == end) | |
| 68 | 7 | break; | |
| 69 | 632 | d = grammar::hexdig_value(*it); | |
| 70 | 632 | if(d < 0) | |
| 71 | 76 | break; | |
| 72 | 556 | v = (16 * v) + d; | |
| 73 | 556 | ++it; | |
| 74 | 556 | break; | |
| 75 | } | ||
| 76 | 1297 | return value_type{ | |
| 77 | static_cast< | ||
| 78 | 1297 | unsigned char>(v / 256), | |
| 79 | static_cast< | ||
| 80 | 1297 | unsigned char>(v % 256)}; | |
| 81 | } | ||
| 82 | |||
| 83 | } // detail | ||
| 84 | } // urls | ||
| 85 | } // boost | ||
| 86 | |||
| 87 | |||
| 88 | #endif | ||
| 89 |