mirror of
https://github.com/momo5502/emulator.git
synced 2026-01-19 11:43:56 +00:00
87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
#pragma once
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#include <string>
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#include <filesystem>
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template <typename Traits>
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struct UNICODE_STRING
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{
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USHORT Length;
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USHORT MaximumLength;
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EMULATOR_CAST(typename Traits::PVOID, char16_t*) Buffer;
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};
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inline std::u16string u8_to_u16(const std::string_view view)
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{
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return std::u16string(view.begin(), view.end());
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}
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inline std::string u16_to_u8(const std::u16string_view u16_view)
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{
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std::string utf8_str;
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utf8_str.reserve(u16_view.size() * 2);
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for (const char16_t ch : u16_view)
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{
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if (ch <= 0x7F)
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{
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utf8_str.push_back(static_cast<char>(ch));
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}
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else if (ch <= 0x7FF)
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{
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utf8_str.push_back(static_cast<char>(0xC0 | (ch >> 6)));
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utf8_str.push_back(static_cast<char>(0x80 | (ch & 0x3F)));
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}
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else
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{
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utf8_str.push_back(static_cast<char>(0xE0 | (ch >> 12)));
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utf8_str.push_back(static_cast<char>(0x80 | ((ch >> 6) & 0x3F)));
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utf8_str.push_back(static_cast<char>(0x80 | (ch & 0x3F)));
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}
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}
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return utf8_str;
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}
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inline std::string w_to_u8(const std::wstring_view w_view)
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{
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std::string utf8_str;
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utf8_str.reserve(w_view.size() * 2);
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for (const wchar_t w_ch : w_view)
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{
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const auto ch = static_cast<char16_t>(w_ch);
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if (ch <= 0x7F)
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{
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utf8_str.push_back(static_cast<char>(ch));
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}
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else if (ch <= 0x7FF)
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{
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utf8_str.push_back(static_cast<char>(0xC0 | (ch >> 6)));
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utf8_str.push_back(static_cast<char>(0x80 | (ch & 0x3F)));
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}
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else
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{
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utf8_str.push_back(static_cast<char>(0xE0 | (ch >> 12)));
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utf8_str.push_back(static_cast<char>(0x80 | ((ch >> 6) & 0x3F)));
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utf8_str.push_back(static_cast<char>(0x80 | (ch & 0x3F)));
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}
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}
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return utf8_str;
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}
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#ifndef OS_WINDOWS
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inline int open_unicode(FILE** handle, const std::filesystem::path& fileName, const std::u16string& mode)
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{
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*handle = fopen(fileName.string().c_str(), u16_to_u8(mode).c_str());
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return errno;
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}
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#else
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inline std::wstring u16_to_w(const std::u16string& u16str)
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{
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return std::wstring(reinterpret_cast<const wchar_t*>(u16str.data()), u16str.size());
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}
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inline auto open_unicode(FILE** handle, const std::filesystem::path& fileName, const std::u16string& mode)
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{
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return _wfopen_s(handle, fileName.wstring().c_str(), u16_to_w(mode).c_str());
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}
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#endif
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