1//
2// Copyright (c) 2019 Mika Fischer (mika.fischer@zoopnet.de)
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/beast
8//
9
10#ifndef BOOST_BEAST_CORE_DETAIL_WIN32_UNICODE_PATH_HPP
11#define BOOST_BEAST_CORE_DETAIL_WIN32_UNICODE_PATH_HPP
12
13#ifdef _WIN32
14#include <boost/config.hpp>
15#include <boost/beast/core/error.hpp>
16#include <boost/winapi/character_code_conversion.hpp>
17#include <boost/winapi/file_management.hpp>
18#include <boost/winapi/get_last_error.hpp>
19#include <array>
20#include <vector>
21
22namespace boost {
23namespace beast {
24namespace detail {
25
26class win32_unicode_path
27{
28 using WCHAR_ = boost::winapi::WCHAR_;
29
30public:
31 win32_unicode_path(const char* utf8_path, error_code& ec) {
32 int ret = mb2wide(utf8_path, static_buf_.data(),
33 static_buf_.size());
34 if (ret == 0)
35 {
36 int sz = mb2wide(utf8_path, nullptr, 0);
37 if (sz == 0)
38 {
39 ec.assign(boost::winapi::GetLastError(),
40 system_category());
41 return;
42 }
43 dynamic_buf_.resize(sz);
44 int ret2 = mb2wide(utf8_path,
45 dynamic_buf_.data(),
46 dynamic_buf_.size());
47 if (ret2 == 0)
48 {
49 ec.assign(boost::winapi::GetLastError(),
50 system_category());
51 return;
52 }
53 }
54 }
55
56 WCHAR_ const* c_str() const noexcept
57 {
58 return dynamic_buf_.empty()
59 ? static_buf_.data()
60 : dynamic_buf_.data();
61 }
62
63private:
64 int mb2wide(const char* utf8_path, WCHAR_* buf, size_t sz)
65 {
66 return boost::winapi::MultiByteToWideChar(
67 boost::winapi::CP_UTF8_,
68 boost::winapi::MB_ERR_INVALID_CHARS_,
69 utf8_path, -1,
70 buf, static_cast<int>(sz));
71 }
72
73 std::array<WCHAR_, boost::winapi::MAX_PATH_> static_buf_;
74 std::vector<WCHAR_> dynamic_buf_;
75};
76
77} // detail
78} // beast
79} // boost
80#endif
81
82#endif
83

source code of boost/libs/beast/include/boost/beast/core/detail/win32_unicode_path.hpp