| 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 | #ifndef BOOST_URL_DETAIL_IMPL_DECODE_IPP | ||
| 11 | #define BOOST_URL_DETAIL_IMPL_DECODE_IPP | ||
| 12 | |||
| 13 | #include <boost/url/detail/config.hpp> | ||
| 14 | #include "decode.hpp" | ||
| 15 | #include <boost/url/grammar/charset.hpp> | ||
| 16 | #include <boost/url/grammar/hexdig_chars.hpp> | ||
| 17 | #include <memory> | ||
| 18 | |||
| 19 | namespace boost { | ||
| 20 | namespace urls { | ||
| 21 | namespace detail { | ||
| 22 | |||
| 23 | char | ||
| 24 | 773 | decode_one( | |
| 25 | char const* const it) noexcept | ||
| 26 | { | ||
| 27 | 773 | auto d0 = grammar::hexdig_value(it[0]); | |
| 28 | 773 | auto d1 = grammar::hexdig_value(it[1]); | |
| 29 | return static_cast<char>( | ||
| 30 | 773 | ((static_cast< | |
| 31 | 773 | unsigned char>(d0) << 4) + | |
| 32 | 773 | (static_cast< | |
| 33 | 773 | unsigned char>(d1)))); | |
| 34 | } | ||
| 35 | |||
| 36 | std::size_t | ||
| 37 | 1897 | decode_bytes_unsafe( | |
| 38 | core::string_view s) noexcept | ||
| 39 | { | ||
| 40 | 1897 | auto p = s.begin(); | |
| 41 | 1897 | auto const end = s.end(); | |
| 42 | 1897 | std::size_t dn = 0; | |
| 43 |
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1897 | if(s.size() >= 3) |
| 44 | { | ||
| 45 | 826 | auto const safe_end = end - 2; | |
| 46 |
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7303 | while(p < safe_end) |
| 47 | { | ||
| 48 |
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6477 | if(*p != '%') |
| 49 | 6218 | p += 1; | |
| 50 | else | ||
| 51 | 259 | p += 3; | |
| 52 | 6477 | ++dn; | |
| 53 | } | ||
| 54 | } | ||
| 55 | 1897 | dn += end - p; | |
| 56 | 1897 | return dn; | |
| 57 | } | ||
| 58 | |||
| 59 | std::size_t | ||
| 60 | 2691 | decode_unsafe( | |
| 61 | char* const dest0, | ||
| 62 | char const* end, | ||
| 63 | core::string_view s, | ||
| 64 | encoding_opts opt) noexcept | ||
| 65 | { | ||
| 66 | 2691 | auto it = s.data(); | |
| 67 | 2691 | auto const last = it + s.size(); | |
| 68 | 2691 | auto dest = dest0; | |
| 69 | |||
| 70 |
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2691 | if(opt.space_as_plus) |
| 71 | { | ||
| 72 |
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4956 | while(it != last) |
| 73 | { | ||
| 74 |
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4247 | if(dest == end) |
| 75 | { | ||
| 76 | // dest too small | ||
| 77 | ✗ | return dest - dest0; | |
| 78 | } | ||
| 79 |
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4247 | if(*it == '+') |
| 80 | { | ||
| 81 | // plus to space | ||
| 82 | 5 | *dest++ = ' '; | |
| 83 | 5 | ++it; | |
| 84 | 5 | continue; | |
| 85 | } | ||
| 86 |
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4242 | if(*it == '%') |
| 87 | { | ||
| 88 | // escaped | ||
| 89 | 105 | ++it; | |
| 90 |
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105 | if(last - it < 2) |
| 91 | { | ||
| 92 | // missing input, | ||
| 93 | // initialize output | ||
| 94 | ✗ | std::memset(dest, | |
| 95 | ✗ | 0, end - dest); | |
| 96 | ✗ | return dest - dest0; | |
| 97 | } | ||
| 98 | 105 | *dest++ = decode_one(it); | |
| 99 | 105 | it += 2; | |
| 100 | 105 | continue; | |
| 101 | } | ||
| 102 | // unescaped | ||
| 103 | 4137 | *dest++ = *it++; | |
| 104 | } | ||
| 105 | 709 | return dest - dest0; | |
| 106 | } | ||
| 107 | |||
| 108 |
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12610 | while(it != last) |
| 109 | { | ||
| 110 |
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10628 | if(dest == end) |
| 111 | { | ||
| 112 | // dest too small | ||
| 113 | ✗ | return dest - dest0; | |
| 114 | } | ||
| 115 |
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10628 | if(*it == '%') |
| 116 | { | ||
| 117 | // escaped | ||
| 118 | 561 | ++it; | |
| 119 |
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561 | if(last - it < 2) |
| 120 | { | ||
| 121 | // missing input, | ||
| 122 | // initialize output | ||
| 123 | ✗ | std::memset(dest, | |
| 124 | ✗ | 0, end - dest); | |
| 125 | ✗ | return dest - dest0; | |
| 126 | } | ||
| 127 | 561 | *dest++ = decode_one(it); | |
| 128 | 561 | it += 2; | |
| 129 | 561 | continue; | |
| 130 | } | ||
| 131 | // unescaped | ||
| 132 | 10067 | *dest++ = *it++; | |
| 133 | } | ||
| 134 | 1982 | return dest - dest0; | |
| 135 | } | ||
| 136 | |||
| 137 | } // detail | ||
| 138 | } // urls | ||
| 139 | } // boost | ||
| 140 | |||
| 141 | #endif | ||
| 142 |