1 //
2 // detail/winrt_utils.hpp
3 // ~~~~~~~~~~~~~~~~~~~~~~
4 //
5 // Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com)
6 //
7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
9 //
10 
11 #ifndef BOOST_ASIO_DETAIL_WINRT_UTILS_HPP
12 #define BOOST_ASIO_DETAIL_WINRT_UTILS_HPP
13 
14 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
15 # pragma once
16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
17 
18 #include <boost/asio/detail/config.hpp>
19 
20 #if defined(BOOST_ASIO_WINDOWS_RUNTIME)
21 
22 #include <codecvt>
23 #include <cstdlib>
24 #include <future>
25 #include <locale>
26 #include <robuffer.h>
27 #include <windows.storage.streams.h>
28 #include <wrl/implements.h>
29 #include <boost/asio/buffer.hpp>
30 #include <boost/system/error_code.hpp>
31 #include <boost/asio/detail/memory.hpp>
32 #include <boost/asio/detail/socket_ops.hpp>
33 
34 #include <boost/asio/detail/push_options.hpp>
35 
36 namespace boost {
37 namespace asio {
38 namespace detail {
39 namespace winrt_utils {
40 
41 inline Platform::String^ string(const char* from)
42 {
43   std::wstring tmp(from, from + std::strlen(from));
44   return ref new Platform::String(tmp.c_str());
45 }
46 
47 inline Platform::String^ string(const std::string& from)
48 {
49   std::wstring tmp(from.begin(), from.end());
50   return ref new Platform::String(tmp.c_str());
51 }
52 
53 inline std::string string(Platform::String^ from)
54 {
55   std::wstring_convert<std::codecvt_utf8<wchar_t>> converter;
56   return converter.to_bytes(from->Data());
57 }
58 
59 inline Platform::String^ string(unsigned short from)
60 {
61   return string(std::to_string(from));
62 }
63 
64 template <typename T>
65 inline Platform::String^ string(const T& from)
66 {
67   return string(from.to_string());
68 }
69 
70 inline int integer(Platform::String^ from)
71 {
72   return _wtoi(from->Data());
73 }
74 
75 template <typename T>
76 inline Windows::Networking::HostName^ host_name(const T& from)
77 {
78   return ref new Windows::Networking::HostName((string)(from));
79 }
80 
81 template <typename ConstBufferSequence>
82 inline Windows::Storage::Streams::IBuffer^ buffer_dup(
83     const ConstBufferSequence& buffers)
84 {
85   using Microsoft::WRL::ComPtr;
86   using boost::asio::buffer_size;
87   std::size_t size = buffer_size(buffers);
88   auto b = ref new Windows::Storage::Streams::Buffer(size);
89   ComPtr<IInspectable> insp = reinterpret_cast<IInspectable*>(b);
90   ComPtr<Windows::Storage::Streams::IBufferByteAccess> bacc;
91   insp.As(&bacc);
92   byte* bytes = nullptr;
93   bacc->Buffer(&bytes);
94   boost::asio::buffer_copy(boost::asio::buffer(bytes, size), buffers);
95   b->Length = size;
96   return b;
97 }
98 
99 } // namespace winrt_utils
100 } // namespace detail
101 } // namespace asio
102 } // namespace boost
103 
104 #include <boost/asio/detail/pop_options.hpp>
105 
106 #endif // defined(BOOST_ASIO_WINDOWS_RUNTIME)
107 
108 #endif // BOOST_ASIO_DETAIL_WINRT_UTILS_HPP
109