1   
 //
1   
 //
2   
// Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
2   
// Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
3   
//
3   
//
4   
// Distributed under the Boost Software License, Version 1.0. (See accompanying
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)
5   
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6   
//
6   
//
7   
// Official repository: https://github.com/boostorg/url
7   
// Official repository: https://github.com/boostorg/url
8   
//
8   
//
9  
9  
10   
#ifndef BOOST_URL_DETAIL_PRINT_HPP
10   
#ifndef BOOST_URL_DETAIL_PRINT_HPP
11   
#define BOOST_URL_DETAIL_PRINT_HPP
11   
#define BOOST_URL_DETAIL_PRINT_HPP
12  
12  
13   
#include <cstdint>
13   
#include <cstdint>
14   
#include <type_traits>
14   
#include <type_traits>
15  
15  
16   
namespace boost {
16   
namespace boost {
17   
namespace urls {
17   
namespace urls {
18   
namespace detail {
18   
namespace detail {
19  
19  
20   
// std::uint64_t
20   
// std::uint64_t
21   
// 18446744073709551615
21   
// 18446744073709551615
22   
//          1          2
22   
//          1          2
23   
template<class T>
23   
template<class T>
24   
struct printed
24   
struct printed
25   
    : std::false_type
25   
    : std::false_type
26   
{
26   
{
27   
};
27   
};
28  
28  
29   
// 16-bit unsigned
29   
// 16-bit unsigned
30   
template<>
30   
template<>
31   
class printed<std::uint16_t>
31   
class printed<std::uint16_t>
32   
    : std::false_type
32   
    : std::false_type
33   
{
33   
{
34   
    char n_;
34   
    char n_;
35   
    char buf_[5];
35   
    char buf_[5];
36  
36  
37   
public:
37   
public:
38   
    printed(std::uint16_t n)
38   
    printed(std::uint16_t n)
39   
    {
39   
    {
40   
        char* it =
40   
        char* it =
41   
            buf_ + sizeof(buf_);
41   
            buf_ + sizeof(buf_);
42   
        if(n == 0)
42   
        if(n == 0)
43   
        {
43   
        {
44   
            *--it = '0';
44   
            *--it = '0';
45   
            n_ = 1;
45   
            n_ = 1;
46   
        }
46   
        }
47   
        else
47   
        else
48   
        {
48   
        {
49   
            while(n > 0)
49   
            while(n > 0)
50   
            {
50   
            {
51   
                *--it = '0' + (n % 10);
51   
                *--it = '0' + (n % 10);
52   
                n /= 10;
52   
                n /= 10;
53   
            }
53   
            }
54   
            n_ = static_cast<char>(
54   
            n_ = static_cast<char>(
55   
                sizeof(buf_) - (
55   
                sizeof(buf_) - (
56   
                    it - buf_));
56   
                    it - buf_));
57   
        }
57   
        }
58   
    }
58   
    }
59  
59  
60   
    core::string_view
60   
    core::string_view
61   
    string() const noexcept
61   
    string() const noexcept
62   
    {
62   
    {
63   
        return core::string_view(buf_ +
63   
        return core::string_view(buf_ +
64   
            sizeof(buf_) - n_, n_);
64   
            sizeof(buf_) - n_, n_);
65   
    }
65   
    }
66   
};
66   
};
67  
67  
68   
template<class T>
68   
template<class T>
69   
printed<T>
69   
printed<T>
70   
make_printed(T t)
70   
make_printed(T t)
71   
{
71   
{
72   
    return printed<T>(t);
72   
    return printed<T>(t);
73   
}
73   
}
74  
74  
75   
} // detail
75   
} // detail
76   
} // urls
76   
} // urls
77   
} // boost
77   
} // boost
78  
78  
79   
#endif
79   
#endif