include/boost/url/rfc/impl/pct_encoded_rule.hpp
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include/boost/url/rfc/impl/pct_encoded_rule.hpp
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|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com) | ||
| 3 | // Copyright (c) 2022 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_PCT_ENCODED_RULE_HPP | ||
| 12 | #define BOOST_URL_RFC_IMPL_PCT_ENCODED_RULE_HPP | ||
| 13 | |||
| 14 | #include <boost/url/grammar/charset.hpp> | ||
| 15 | #include <boost/url/grammar/error.hpp> | ||
| 16 | #include <boost/url/grammar/hexdig_chars.hpp> | ||
| 17 | |||
| 18 | namespace boost { | ||
| 19 | namespace urls { | ||
| 20 | |||
| 21 | namespace detail { | ||
| 22 | |||
| 23 | template<class CharSet> | ||
| 24 | BOOST_URL_CXX14_CONSTEXPR | ||
| 25 | auto | ||
| 26 | 9964 | parse_encoded( | |
| 27 | char const*& it, | ||
| 28 | char const* end, | ||
| 29 | CharSet const& cs) noexcept -> | ||
| 30 | system::result<pct_string_view> | ||
| 31 | { | ||
| 32 | 9964 | auto const start = it; | |
| 33 | 9964 | std::size_t n = 0; | |
| 34 | 356 | for(;;) | |
| 35 | { | ||
| 36 | 10320 | auto it0 = it; | |
| 37 | 10320 | it = grammar::find_if_not( | |
| 38 | it0, end, cs); | ||
| 39 | 10320 | n += it - it0; | |
| 40 |
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10320 | if(it == end || *it != '%') |
| 41 | break; | ||
| 42 | 455 | bool at_end = false; | |
| 43 | 212 | for(;;) | |
| 44 | { | ||
| 45 | 667 | ++it; | |
| 46 |
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667 | if(it == end) |
| 47 | { | ||
| 48 | // expected HEXDIG | ||
| 49 | 14 | BOOST_URL_CONSTEXPR_RETURN_EC( | |
| 50 | grammar::error::invalid); | ||
| 51 | } | ||
| 52 | 653 | auto r = grammar::hexdig_value(*it); | |
| 53 |
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653 | if(r < 0) |
| 54 | { | ||
| 55 | // expected HEXDIG | ||
| 56 | 12 | BOOST_URL_CONSTEXPR_RETURN_EC( | |
| 57 | grammar::error::invalid); | ||
| 58 | } | ||
| 59 | 641 | ++it; | |
| 60 |
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641 | if(it == end) |
| 61 | { | ||
| 62 | // expected HEXDIG | ||
| 63 | 5 | BOOST_URL_CONSTEXPR_RETURN_EC( | |
| 64 | grammar::error::invalid); | ||
| 65 | } | ||
| 66 | 636 | r = grammar::hexdig_value(*it); | |
| 67 |
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636 | if(r < 0) |
| 68 | { | ||
| 69 | // expected HEXDIG | ||
| 70 | 8 | BOOST_URL_CONSTEXPR_RETURN_EC( | |
| 71 | grammar::error::invalid); | ||
| 72 | } | ||
| 73 | 628 | ++n; | |
| 74 | 628 | ++it; | |
| 75 |
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628 | if(it == end) |
| 76 | { | ||
| 77 | 60 | at_end = true; | |
| 78 | 60 | break; | |
| 79 | } | ||
| 80 |
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568 | if(*it != '%') |
| 81 | 356 | break; | |
| 82 | } | ||
| 83 |
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416 | if(at_end) |
| 84 | 60 | break; | |
| 85 | } | ||
| 86 | 9925 | return make_pct_string_view_unsafe( | |
| 87 | 9925 | start, it - start, n); | |
| 88 | } | ||
| 89 | |||
| 90 | } // detail | ||
| 91 | |||
| 92 | //------------------------------------------------ | ||
| 93 | |||
| 94 | template<class CharSet> | ||
| 95 | BOOST_URL_CXX14_CONSTEXPR | ||
| 96 | auto | ||
| 97 | 9964 | implementation_defined::pct_encoded_rule_t<CharSet>:: | |
| 98 | parse( | ||
| 99 | char const*& it, | ||
| 100 | char const* end) const noexcept -> | ||
| 101 | system::result<value_type> | ||
| 102 | { | ||
| 103 | 9964 | return detail::parse_encoded( | |
| 104 | 9964 | it, end, cs_); | |
| 105 | } | ||
| 106 | |||
| 107 | } // urls | ||
| 108 | } // boost | ||
| 109 | |||
| 110 | #endif | ||
| 111 |