| Line | Branch | Exec | Source |
|---|---|---|---|
| 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 | |||
| 11 | #include <boost/url/detail/config.hpp> | ||
| 12 | #include "decode.hpp" | ||
| 13 | #include <boost/url/grammar/charset.hpp> | ||
| 14 | #include <boost/url/grammar/hexdig_chars.hpp> | ||
| 15 | #include <memory> | ||
| 16 | |||
| 17 | namespace boost { | ||
| 18 | namespace urls { | ||
| 19 | namespace detail { | ||
| 20 | |||
| 21 | char | ||
| 22 | 794 | decode_one( | |
| 23 | char const* const it) noexcept | ||
| 24 | { | ||
| 25 | 794 | auto d0 = grammar::hexdig_value(it[0]); | |
| 26 | 794 | auto d1 = grammar::hexdig_value(it[1]); | |
| 27 | return static_cast<char>( | ||
| 28 | 794 | ((static_cast< | |
| 29 | 794 | unsigned char>(d0) << 4) + | |
| 30 | 794 | (static_cast< | |
| 31 | 794 | unsigned char>(d1)))); | |
| 32 | } | ||
| 33 | |||
| 34 | std::size_t | ||
| 35 | 1977 | decode_bytes_unsafe( | |
| 36 | core::string_view s) noexcept | ||
| 37 | { | ||
| 38 | 1977 | auto p = s.begin(); | |
| 39 | 1977 | auto const end = s.end(); | |
| 40 | 1977 | std::size_t dn = 0; | |
| 41 |
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1977 | if(s.size() >= 3) |
| 42 | { | ||
| 43 | 826 | auto const safe_end = end - 2; | |
| 44 |
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7303 | while(p < safe_end) |
| 45 | { | ||
| 46 |
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6477 | if(*p != '%') |
| 47 | 6218 | p += 1; | |
| 48 | else | ||
| 49 | 259 | p += 3; | |
| 50 | 6477 | ++dn; | |
| 51 | } | ||
| 52 | } | ||
| 53 | 1977 | dn += end - p; | |
| 54 | 1977 | return dn; | |
| 55 | } | ||
| 56 | |||
| 57 | std::size_t | ||
| 58 | 2711 | decode_unsafe( | |
| 59 | char* const dest0, | ||
| 60 | char const* end, | ||
| 61 | core::string_view s, | ||
| 62 | encoding_opts opt) noexcept | ||
| 63 | { | ||
| 64 | 2711 | auto it = s.data(); | |
| 65 | 2711 | auto const last = it + s.size(); | |
| 66 | 2711 | auto dest = dest0; | |
| 67 | |||
| 68 |
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2711 | if(opt.space_as_plus) |
| 69 | { | ||
| 70 |
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4956 | while(it != last) |
| 71 | { | ||
| 72 |
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4247 | if(dest == end) |
| 73 | { | ||
| 74 | // dest too small | ||
| 75 | ✗ | return dest - dest0; | |
| 76 | } | ||
| 77 |
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4247 | if(*it == '+') |
| 78 | { | ||
| 79 | // plus to space | ||
| 80 | 5 | *dest++ = ' '; | |
| 81 | 5 | ++it; | |
| 82 | 5 | continue; | |
| 83 | } | ||
| 84 |
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4242 | if(*it == '%') |
| 85 | { | ||
| 86 | // escaped | ||
| 87 | 105 | ++it; | |
| 88 |
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105 | if(last - it < 2) |
| 89 | { | ||
| 90 | // missing input, | ||
| 91 | // initialize output | ||
| 92 | ✗ | std::memset(dest, | |
| 93 | ✗ | 0, end - dest); | |
| 94 | ✗ | return dest - dest0; | |
| 95 | } | ||
| 96 | 105 | *dest++ = decode_one(it); | |
| 97 | 105 | it += 2; | |
| 98 | 105 | continue; | |
| 99 | } | ||
| 100 | // unescaped | ||
| 101 | 4137 | *dest++ = *it++; | |
| 102 | } | ||
| 103 | 709 | return dest - dest0; | |
| 104 | } | ||
| 105 | |||
| 106 |
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12650 | while(it != last) |
| 107 | { | ||
| 108 |
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10648 | if(dest == end) |
| 109 | { | ||
| 110 | // dest too small | ||
| 111 | ✗ | return dest - dest0; | |
| 112 | } | ||
| 113 |
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10648 | if(*it == '%') |
| 114 | { | ||
| 115 | // escaped | ||
| 116 | 581 | ++it; | |
| 117 |
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581 | if(last - it < 2) |
| 118 | { | ||
| 119 | // missing input, | ||
| 120 | // initialize output | ||
| 121 | ✗ | std::memset(dest, | |
| 122 | ✗ | 0, end - dest); | |
| 123 | ✗ | return dest - dest0; | |
| 124 | } | ||
| 125 | 581 | *dest++ = decode_one(it); | |
| 126 | 581 | it += 2; | |
| 127 | 581 | continue; | |
| 128 | } | ||
| 129 | // unescaped | ||
| 130 | 10067 | *dest++ = *it++; | |
| 131 | } | ||
| 132 | 2002 | return dest - dest0; | |
| 133 | } | ||
| 134 | |||
| 135 | } // detail | ||
| 136 | } // urls | ||
| 137 | } // boost | ||
| 138 | |||
| 139 |