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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_PRINT_HPP | ||
11 | #define BOOST_URL_DETAIL_PRINT_HPP | ||
12 | |||
13 | #include <cstdint> | ||
14 | #include <type_traits> | ||
15 | |||
16 | namespace boost { | ||
17 | namespace urls { | ||
18 | namespace detail { | ||
19 | |||
20 | // std::uint64_t | ||
21 | // 18446744073709551615 | ||
22 | // 1 2 | ||
23 | template<class T> | ||
24 | struct printed | ||
25 | : std::false_type | ||
26 | { | ||
27 | }; | ||
28 | |||
29 | // 16-bit unsigned | ||
30 | template<> | ||
31 | class printed<std::uint16_t> | ||
32 | : std::false_type | ||
33 | { | ||
34 | char n_; | ||
35 | char buf_[5]; | ||
36 | |||
37 | public: | ||
38 | 23 | printed(std::uint16_t n) | |
39 | 23 | { | |
40 | 23 | char* it = | |
41 | 23 | buf_ + sizeof(buf_); | |
42 |
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23 | if(n == 0) |
43 | { | ||
44 | 16 | *--it = '0'; | |
45 | 16 | n_ = 1; | |
46 | } | ||
47 | else | ||
48 | { | ||
49 |
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35 | while(n > 0) |
50 | { | ||
51 | 28 | *--it = '0' + (n % 10); | |
52 | 28 | n /= 10; | |
53 | } | ||
54 | 7 | n_ = static_cast<char>( | |
55 | 7 | sizeof(buf_) - ( | |
56 | 7 | it - buf_)); | |
57 | } | ||
58 | 23 | } | |
59 | |||
60 | core::string_view | ||
61 | 69 | string() const noexcept | |
62 | { | ||
63 | 138 | return core::string_view(buf_ + | |
64 | 69 | sizeof(buf_) - n_, n_); | |
65 | } | ||
66 | }; | ||
67 | |||
68 | template<class T> | ||
69 | printed<T> | ||
70 | 23 | make_printed(T t) | |
71 | { | ||
72 | 23 | return printed<T>(t); | |
73 | } | ||
74 | |||
75 | } // detail | ||
76 | } // urls | ||
77 | } // boost | ||
78 | |||
79 | #endif | ||
80 |