//
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// Copyright (c) 2019 Mika Fischer (mika.fischer@zoopnet.de)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// Official repository: https://github.com/boostorg/beast
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//
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#ifndef BOOST_BEAST_CORE_DETAIL_WIN32_UNICODE_PATH_HPP
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#define BOOST_BEAST_CORE_DETAIL_WIN32_UNICODE_PATH_HPP
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#ifdef _WIN32
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#include <boost/config.hpp>
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#include <boost/beast/core/error.hpp>
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#include <boost/winapi/character_code_conversion.hpp>
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#include <boost/winapi/file_management.hpp>
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#include <boost/winapi/get_last_error.hpp>
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#include <array>
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#include <vector>
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namespace boost {
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namespace beast {
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namespace detail {
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class win32_unicode_path
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{
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using WCHAR_ = boost::winapi::WCHAR_;
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public:
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win32_unicode_path(const char* utf8_path, error_code& ec) {
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int ret = mb2wide(utf8_path, static_buf_.data(),
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static_buf_.size());
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if (ret == 0)
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{
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int sz = mb2wide(utf8_path, nullptr, 0);
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if (sz == 0)
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{
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ec.assign(boost::winapi::GetLastError(),
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system_category());
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return;
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}
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dynamic_buf_.resize(sz);
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int ret2 = mb2wide(utf8_path,
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dynamic_buf_.data(),
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dynamic_buf_.size());
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if (ret2 == 0)
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{
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ec.assign(boost::winapi::GetLastError(),
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system_category());
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return;
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}
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}
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}
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WCHAR_ const* c_str() const noexcept
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{
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return dynamic_buf_.empty()
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? static_buf_.data()
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: dynamic_buf_.data();
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}
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private:
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int mb2wide(const char* utf8_path, WCHAR_* buf, size_t sz)
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{
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return boost::winapi::MultiByteToWideChar(
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boost::winapi::CP_UTF8_,
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boost::winapi::MB_ERR_INVALID_CHARS_,
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utf8_path, -1,
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buf, static_cast<int>(sz));
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}
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std::array<WCHAR_, boost::winapi::MAX_PATH_> static_buf_;
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std::vector<WCHAR_> dynamic_buf_;
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};
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} // detail
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} // beast
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} // boost
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#endif
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#endif
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