106 lines
2.7 KiB
C++
106 lines
2.7 KiB
C++
// Copyright 2019 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <cstring>
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#include <string>
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#include <utility>
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#include <fmt/format.h>
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#include "common/dynamic_library.h"
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#ifdef _WIN32
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#include <windows.h>
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#else
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#include <dlfcn.h>
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#endif
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namespace Common {
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DynamicLibrary::DynamicLibrary() = default;
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DynamicLibrary::DynamicLibrary(const char* filename) {
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Open(filename);
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}
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DynamicLibrary::DynamicLibrary(DynamicLibrary&& rhs) noexcept
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: handle{std::exchange(rhs.handle, nullptr)} {}
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DynamicLibrary& DynamicLibrary::operator=(DynamicLibrary&& rhs) noexcept {
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Close();
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handle = std::exchange(rhs.handle, nullptr);
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return *this;
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}
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DynamicLibrary::~DynamicLibrary() {
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Close();
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}
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std::string DynamicLibrary::GetUnprefixedFilename(const char* filename) {
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#if defined(_WIN32)
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return std::string(filename) + ".dll";
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#elif defined(__APPLE__)
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return std::string(filename) + ".dylib";
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#else
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return std::string(filename) + ".so";
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#endif
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}
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std::string DynamicLibrary::GetVersionedFilename(const char* libname, int major, int minor) {
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#if defined(_WIN32)
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if (major >= 0 && minor >= 0)
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return fmt::format("{}-{}-{}.dll", libname, major, minor);
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else if (major >= 0)
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return fmt::format("{}-{}.dll", libname, major);
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else
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return fmt::format("{}.dll", libname);
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#elif defined(__APPLE__)
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const char* prefix = std::strncmp(libname, "lib", 3) ? "lib" : "";
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if (major >= 0 && minor >= 0)
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return fmt::format("{}{}.{}.{}.dylib", prefix, libname, major, minor);
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else if (major >= 0)
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return fmt::format("{}{}.{}.dylib", prefix, libname, major);
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else
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return fmt::format("{}{}.dylib", prefix, libname);
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#else
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const char* prefix = std::strncmp(libname, "lib", 3) ? "lib" : "";
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if (major >= 0 && minor >= 0)
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return fmt::format("{}{}.so.{}.{}", prefix, libname, major, minor);
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else if (major >= 0)
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return fmt::format("{}{}.so.{}", prefix, libname, major);
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else
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return fmt::format("{}{}.so", prefix, libname);
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#endif
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}
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bool DynamicLibrary::Open(const char* filename) {
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#ifdef _WIN32
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handle = reinterpret_cast<void*>(LoadLibraryA(filename));
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#else
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handle = dlopen(filename, RTLD_NOW);
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#endif
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return handle != nullptr;
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}
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void DynamicLibrary::Close() {
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if (!IsOpen())
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return;
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#ifdef _WIN32
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FreeLibrary(reinterpret_cast<HMODULE>(handle));
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#else
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dlclose(handle);
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#endif
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handle = nullptr;
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}
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void* DynamicLibrary::GetSymbolAddress(const char* name) const {
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#ifdef _WIN32
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return reinterpret_cast<void*>(GetProcAddress(reinterpret_cast<HMODULE>(handle), name));
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#else
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return reinterpret_cast<void*>(dlsym(handle, name));
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#endif
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}
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} // namespace Common
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