mirror of
https://github.com/LMMS/lmms.git
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1641f5f95f
- Build RemoteVstPlugin in C++20 mode - Avoids using std::wstring due to strange issues with it when built with wineg++. See https://bugs.winehq.org/show_bug.cgi?id=58465 - Fix some memory leaks + minor cleanup of RemoteVstPlugin code - Rename `F_OPEN_UTF8` to `fopenUtf8` - Use C++20 in our `determine_version_from_source` CMake function - Update ZynAddSubFX submodule
125 lines
3.3 KiB
C++
125 lines
3.3 KiB
C++
/*
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* IoHelper.h - helper functions for file I/O
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*
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* Copyright (c) 2018 Hyunjin Song <tteu.ingog/at/gmail.com>
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*
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* This file is part of LMMS - https://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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// NOTE: The LMMS/zynaddsubfx repo contains a copy of this header.
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// If you modify this file, consider modifying it there as well.
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#ifndef LMMS_IO_HELPER_H
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#define LMMS_IO_HELPER_H
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#include <cstdio>
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#include <limits>
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#include <memory>
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#include <stdexcept>
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#include <string>
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#include <string_view>
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#ifdef _WIN32
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# ifndef NOMINMAX
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# define NOMINMAX
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# endif
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# include <windows.h>
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#endif
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#if defined(_WIN32) && !defined(__WINE__)
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# include <io.h>
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#elif __has_include(<unistd.h>)
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# include <unistd.h>
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#endif
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namespace lmms
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{
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#ifdef _WIN32
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/**
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* UTF-8 to wide string conversion
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* NOTE: Avoids using std::wstring because it does not work correctly with wineg++
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*/
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inline std::unique_ptr<wchar_t[]> toWString(std::string_view utf8)
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{
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std::unique_ptr<wchar_t[]> ret;
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if (utf8.empty())
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{
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ret = std::make_unique<wchar_t[]>(1);
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return ret;
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}
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if (utf8.length() > static_cast<std::size_t>(std::numeric_limits<int>::max()))
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{
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throw std::overflow_error{"toWString: input string is too long"};
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}
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const auto utf8Len = static_cast<int>(utf8.length());
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int result = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, utf8.data(), utf8Len, nullptr, 0);
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if (result <= 0)
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{
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const DWORD error = ::GetLastError();
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throw std::invalid_argument{"toWString: failed to get size of result string. error code: " + std::to_string(error)};
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}
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ret = std::make_unique<wchar_t[]>(result + 1); // includes null terminator
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result = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, utf8.data(), utf8Len, ret.get(), result);
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if (result <= 0)
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{
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const DWORD error = ::GetLastError();
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throw std::invalid_argument{"toWString: failed to convert. error code: " + std::to_string(error)};
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}
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return ret;
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}
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#endif // _WIN32
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//! std::fopen wrapper that expects UTF-8 encoded `filename` and `mode`
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inline std::FILE* fopenUtf8(const std::string& filename, const char* mode)
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{
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#if defined(_WIN32) && !defined(__WINE__)
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return _wfopen(toWString(filename).get(), toWString(mode).get());
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#else
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return std::fopen(filename.c_str(), mode);
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#endif
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}
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//! Returns the POSIX file descriptor of the given FILE
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inline int fileToDescriptor(std::FILE* file, bool closeFile = true)
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{
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if (file == nullptr) { return -1; }
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#if defined(_WIN32) && !defined(__WINE__)
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int fh = _dup(_fileno(file));
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#else
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int fh = dup(fileno(file));
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#endif
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if (closeFile) { std::fclose(file); }
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return fh;
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}
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} // namespace lmms
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#endif // LMMS_IO_HELPER_H
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