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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_DETAIL_NORMALIZED_HPP | ||
| 12 | #define BOOST_URL_DETAIL_NORMALIZED_HPP | ||
| 13 | |||
| 14 | #include <boost/core/detail/string_view.hpp> | ||
| 15 | #include "boost/url/segments_encoded_view.hpp" | ||
| 16 | |||
| 17 | namespace boost { | ||
| 18 | namespace urls { | ||
| 19 | namespace detail { | ||
| 20 | |||
| 21 | class fnv_1a | ||
| 22 | { | ||
| 23 | public: | ||
| 24 | using digest_type = std::size_t; | ||
| 25 | |||
| 26 | #if BOOST_URL_ARCH == 64 | ||
| 27 | static constexpr std::size_t const prime = | ||
| 28 | static_cast<std::size_t>(0x100000001B3ULL); | ||
| 29 | static constexpr std::size_t init_hash = | ||
| 30 | static_cast<std::size_t>(0xcbf29ce484222325ULL); | ||
| 31 | #else | ||
| 32 | static constexpr std::size_t const prime = | ||
| 33 | static_cast<std::size_t>(0x01000193UL); | ||
| 34 | static constexpr std::size_t init_hash = | ||
| 35 | static_cast<std::size_t>(0x811C9DC5UL); | ||
| 36 | #endif | ||
| 37 | |||
| 38 | explicit | ||
| 39 | 276 | fnv_1a(std::size_t salt) noexcept | |
| 40 | 276 | : h_(init_hash + salt) | |
| 41 | { | ||
| 42 | 276 | } | |
| 43 | |||
| 44 | void | ||
| 45 | 3840 | put(char c) noexcept | |
| 46 | { | ||
| 47 | 3840 | h_ ^= c; | |
| 48 | 3840 | h_ *= prime; | |
| 49 | 3840 | } | |
| 50 | |||
| 51 | void | ||
| 52 | 276 | put(core::string_view s) noexcept | |
| 53 | { | ||
| 54 |
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294 | for (char c: s) |
| 55 | { | ||
| 56 | 18 | put(c); | |
| 57 | } | ||
| 58 | 276 | } | |
| 59 | |||
| 60 | digest_type | ||
| 61 | 276 | digest() const noexcept | |
| 62 | { | ||
| 63 | 276 | return h_; | |
| 64 | } | ||
| 65 | |||
| 66 | private: | ||
| 67 | std::size_t h_; | ||
| 68 | }; | ||
| 69 | |||
| 70 | void | ||
| 71 | pop_encoded_front( | ||
| 72 | core::string_view& s, | ||
| 73 | char& c, | ||
| 74 | std::size_t& n) noexcept; | ||
| 75 | |||
| 76 | // compare two core::string_views as if they are both | ||
| 77 | // percent-decoded | ||
| 78 | int | ||
| 79 | compare_encoded( | ||
| 80 | core::string_view lhs, | ||
| 81 | core::string_view rhs) noexcept; | ||
| 82 | |||
| 83 | // digest a core::string_view as if it were | ||
| 84 | // percent-decoded | ||
| 85 | void | ||
| 86 | digest_encoded( | ||
| 87 | core::string_view s, | ||
| 88 | fnv_1a& hasher) noexcept; | ||
| 89 | |||
| 90 | void | ||
| 91 | digest( | ||
| 92 | core::string_view s, | ||
| 93 | fnv_1a& hasher) noexcept; | ||
| 94 | |||
| 95 | // check if core::string_view lhs starts with core::string_view | ||
| 96 | // rhs as if they are both percent-decoded. If | ||
| 97 | // lhs starts with rhs, return number of chars | ||
| 98 | // matched in the encoded core::string_view | ||
| 99 | std::size_t | ||
| 100 | path_starts_with( | ||
| 101 | core::string_view lhs, | ||
| 102 | core::string_view rhs) noexcept; | ||
| 103 | |||
| 104 | // check if core::string_view lhs ends with core::string_view | ||
| 105 | // rhs as if they are both percent-decoded. If | ||
| 106 | // lhs ends with rhs, return number of chars | ||
| 107 | // matched in the encoded core::string_view | ||
| 108 | std::size_t | ||
| 109 | path_ends_with( | ||
| 110 | core::string_view lhs, | ||
| 111 | core::string_view rhs) noexcept; | ||
| 112 | |||
| 113 | // compare two core::string_views as if they are both | ||
| 114 | // percent-decoded and lowercase | ||
| 115 | int | ||
| 116 | ci_compare_encoded( | ||
| 117 | core::string_view lhs, | ||
| 118 | core::string_view rhs) noexcept; | ||
| 119 | |||
| 120 | // digest a core::string_view as if it were decoded | ||
| 121 | // and lowercase | ||
| 122 | void | ||
| 123 | ci_digest_encoded( | ||
| 124 | core::string_view s, | ||
| 125 | fnv_1a& hasher) noexcept; | ||
| 126 | |||
| 127 | // compare two ascii core::string_views | ||
| 128 | int | ||
| 129 | compare( | ||
| 130 | core::string_view lhs, | ||
| 131 | core::string_view rhs) noexcept; | ||
| 132 | |||
| 133 | // compare two core::string_views as if they are both | ||
| 134 | // lowercase | ||
| 135 | int | ||
| 136 | ci_compare( | ||
| 137 | core::string_view lhs, | ||
| 138 | core::string_view rhs) noexcept; | ||
| 139 | |||
| 140 | // digest a core::string_view as if it were lowercase | ||
| 141 | void | ||
| 142 | ci_digest( | ||
| 143 | core::string_view s, | ||
| 144 | fnv_1a& hasher) noexcept; | ||
| 145 | |||
| 146 | BOOST_URL_DECL | ||
| 147 | std::size_t | ||
| 148 | remove_dot_segments( | ||
| 149 | char* dest, | ||
| 150 | char const* end, | ||
| 151 | core::string_view input) noexcept; | ||
| 152 | |||
| 153 | void | ||
| 154 | pop_last_segment( | ||
| 155 | core::string_view& s, | ||
| 156 | core::string_view& c, | ||
| 157 | std::size_t& level, | ||
| 158 | bool r) noexcept; | ||
| 159 | |||
| 160 | char | ||
| 161 | path_pop_back( core::string_view& s ); | ||
| 162 | |||
| 163 | void | ||
| 164 | normalized_path_digest( | ||
| 165 | core::string_view s, | ||
| 166 | bool remove_unmatched, | ||
| 167 | fnv_1a& hasher) noexcept; | ||
| 168 | |||
| 169 | int | ||
| 170 | segments_compare( | ||
| 171 | segments_encoded_view seg0, | ||
| 172 | segments_encoded_view seg1) noexcept; | ||
| 173 | |||
| 174 | } // detail | ||
| 175 | } // urls | ||
| 176 | } // boost | ||
| 177 | |||
| 178 | #endif | ||
| 179 |