lokinet/llarp/win32/dll.hpp
dr7ana 46ad8d4058 Clang format include sorting + CMake
- includes are now sorted in consistent, logical order; first step in an attempt to fix the tomfoolery (no relation to Tom) brought in by include-what-you-use
- shuffled around some cmake linking to simplify dependency graph
- superfluous files removed
2023-10-24 12:11:51 -07:00

37 lines
1.0 KiB
C++

#pragma once
#include "exception.hpp"
#include <llarp/util/str.hpp>
#include <windows.h>
namespace llarp::win32
{
namespace detail
{
HMODULE
load_dll(const std::string& dll);
template <typename Func, typename... More>
void
load_funcs(HMODULE handle, const std::string& name, Func*& f, More&&... more)
{
if (auto ptr = GetProcAddress(handle, name.c_str()))
f = reinterpret_cast<Func*>(ptr);
else
throw win32::error{fmt::format("function '{}' not found", name)};
if constexpr (sizeof...(More) > 0)
load_funcs(handle, std::forward<More>(more)...);
}
} // namespace detail
// Loads a DLL and extracts function pointers from it. Takes the dll name and pairs of
// name/function pointer arguments. Throws on failure.
template <typename Func, typename... More>
void
load_dll_functions(const std::string& dll, const std::string& fname, Func*& f, More&&... funcs)
{
detail::load_funcs(detail::load_dll(dll), fname, f, std::forward<More>(funcs)...);
}
} // namespace llarp::win32