mirror of https://github.com/OpenTTD/OpenTTD.git
59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
/*
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* This file is part of OpenTTD.
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* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
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* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file library_loader_win.cpp Implementation of the LibraryLoader for Windows */
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#include "../../stdafx.h"
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#include <windows.h>
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#include "../../library_loader.h"
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#include "../../safeguards.h"
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static std::string GetLoadError()
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{
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auto error_code = GetLastError();
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char buffer[512];
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if (FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, nullptr, error_code,
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MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buffer, sizeof(buffer), nullptr) == 0) {
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return fmt::format("Unknown error {}", error_code);
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}
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return buffer;
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}
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void *LibraryLoader::OpenLibrary(const std::string &filename)
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{
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void *h = ::LoadLibraryW(OTTD2FS(filename).c_str());
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if (h == nullptr) {
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this->error = GetLoadError();
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}
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return h;
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}
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void LibraryLoader::CloseLibrary()
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{
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HMODULE handle = static_cast<HMODULE>(this->handle);
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::FreeLibrary(handle);
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}
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void *LibraryLoader::GetSymbol(const std::string &symbol_name)
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{
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HMODULE handle = static_cast<HMODULE>(this->handle);
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void *p = reinterpret_cast<void *>(::GetProcAddress(handle, symbol_name.c_str()));
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if (p == nullptr) {
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this->error = GetLoadError();
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}
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return p;
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}
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