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|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2019 Vinnie Falco (vinnie.falco@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_DETAIL_PATH_HPP | ||
| 11 | #define BOOST_URL_DETAIL_PATH_HPP | ||
| 12 | |||
| 13 | #include <boost/core/detail/string_view.hpp> | ||
| 14 | |||
| 15 | namespace boost { | ||
| 16 | namespace urls { | ||
| 17 | namespace detail { | ||
| 18 | |||
| 19 | // Return the number of characters at | ||
| 20 | // the front of the path that are reserved | ||
| 21 | inline | ||
| 22 | std::size_t | ||
| 23 | 4181 | path_prefix( | |
| 24 | char const* p, | ||
| 25 | std::size_t n) noexcept | ||
| 26 | { | ||
| 27 |
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4181 | switch(n) |
| 28 | { | ||
| 29 | 316 | case 0: | |
| 30 | 316 | return 0; | |
| 31 | |||
| 32 | 247 | case 1: | |
| 33 |
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247 | if(p[0] == '/') |
| 34 | 162 | return 1; | |
| 35 | 85 | return 0; | |
| 36 | |||
| 37 | 184 | case 2: | |
| 38 |
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184 | if(p[0] == '/') |
| 39 | 83 | return 1; | |
| 40 |
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101 | if( p[0] == '.' && |
| 41 |
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86 | p[1] == '/') |
| 42 | 57 | return 2; | |
| 43 | 44 | return 0; | |
| 44 | |||
| 45 | 3434 | default: | |
| 46 |
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3434 | if(p[0] == '/') |
| 47 | { | ||
| 48 |
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1823 | if( p[1] == '.' && |
| 49 |
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433 | p[2] == '/') |
| 50 | 234 | return 3; | |
| 51 | 1589 | return 1; | |
| 52 | } | ||
| 53 |
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1611 | if( p[0] == '.' && |
| 54 |
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622 | p[1] == '/') |
| 55 | 351 | return 2; | |
| 56 | 1260 | break; | |
| 57 | } | ||
| 58 | 1260 | return 0; | |
| 59 | } | ||
| 60 | |||
| 61 | // VFALCO DEPRECATED | ||
| 62 | inline | ||
| 63 | std::size_t | ||
| 64 | 4181 | path_prefix( | |
| 65 | core::string_view s) noexcept | ||
| 66 | { | ||
| 67 | 4181 | return path_prefix( | |
| 68 | 4181 | s.data(), s.size()); | |
| 69 | } | ||
| 70 | |||
| 71 | // returns the number of adjusted | ||
| 72 | // segments based on the malleable prefix. | ||
| 73 | inline | ||
| 74 | std::size_t | ||
| 75 | 3640 | path_segments( | |
| 76 | core::string_view s, | ||
| 77 | std::size_t nseg) noexcept | ||
| 78 | { | ||
| 79 |
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3640 | switch(s.size()) |
| 80 | { | ||
| 81 | 1109 | case 0: | |
| 82 |
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1109 | BOOST_ASSERT(nseg == 0); |
| 83 | 1109 | return 0; | |
| 84 | |||
| 85 | 552 | case 1: | |
| 86 |
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552 | BOOST_ASSERT(nseg == 1); |
| 87 |
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552 | if(s[0] == '/') |
| 88 | 492 | return 0; | |
| 89 | 60 | return 1; | |
| 90 | |||
| 91 | 166 | case 2: | |
| 92 |
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166 | if(s[0] == '/') |
| 93 | 124 | return nseg; | |
| 94 |
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66 | if( s[0] == '.' && |
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24 | s[1] == '/') |
| 96 | { | ||
| 97 |
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14 | BOOST_ASSERT(nseg > 1); |
| 98 | 14 | return nseg - 1; | |
| 99 | } | ||
| 100 | 28 | return nseg; | |
| 101 | |||
| 102 | 1813 | default: | |
| 103 |
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| 104 | { | ||
| 105 |
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964 | if( s[1] == '.' && |
| 106 |
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66 | s[2] == '/') |
| 107 | { | ||
| 108 |
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44 | BOOST_ASSERT(nseg > 1); |
| 109 | 44 | return nseg - 1; | |
| 110 | } | ||
| 111 | 854 | return nseg; | |
| 112 | } | ||
| 113 |
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983 | if( s[0] == '.' && |
| 114 |
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68 | s[1] == '/') |
| 115 | { | ||
| 116 |
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39 | BOOST_ASSERT(nseg > 1); |
| 117 | 39 | return nseg - 1; | |
| 118 | } | ||
| 119 | 876 | break; | |
| 120 | } | ||
| 121 | 876 | return nseg; | |
| 122 | } | ||
| 123 | |||
| 124 | // Trim reserved characters from | ||
| 125 | // the front of the path. | ||
| 126 | inline | ||
| 127 | core::string_view | ||
| 128 | clean_path( | ||
| 129 | core::string_view s) noexcept | ||
| 130 | { | ||
| 131 | s.remove_prefix( | ||
| 132 | path_prefix(s)); | ||
| 133 | return s; | ||
| 134 | } | ||
| 135 | |||
| 136 | } // detail | ||
| 137 | } // urls | ||
| 138 | } // boost | ||
| 139 | |||
| 140 | #endif | ||
| 141 |