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-rw-r--r--src/common/dynamic_library.cpp106
1 files changed, 106 insertions, 0 deletions
diff --git a/src/common/dynamic_library.cpp b/src/common/dynamic_library.cpp
new file mode 100644
index 000000000..7ab54e9e4
--- /dev/null
+++ b/src/common/dynamic_library.cpp
@@ -0,0 +1,106 @@
+// Copyright 2019 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <cstring>
+#include <string>
+#include <utility>
+
+#include <fmt/format.h>
+
+#include "common/dynamic_library.h"
+
+#ifdef _WIN32
+#include <windows.h>
+#else
+#include <dlfcn.h>
+#endif
+
+namespace Common {
+
+DynamicLibrary::DynamicLibrary() = default;
+
+DynamicLibrary::DynamicLibrary(const char* filename) {
+ Open(filename);
+}
+
+DynamicLibrary::DynamicLibrary(DynamicLibrary&& rhs) noexcept
+ : handle{std::exchange(rhs.handle, nullptr)} {}
+
+DynamicLibrary& DynamicLibrary::operator=(DynamicLibrary&& rhs) noexcept {
+ Close();
+ handle = std::exchange(rhs.handle, nullptr);
+ return *this;
+}
+
+DynamicLibrary::~DynamicLibrary() {
+ Close();
+}
+
+std::string DynamicLibrary::GetUnprefixedFilename(const char* filename) {
+#if defined(_WIN32)
+ return std::string(filename) + ".dll";
+#elif defined(__APPLE__)
+ return std::string(filename) + ".dylib";
+#else
+ return std::string(filename) + ".so";
+#endif
+}
+
+std::string DynamicLibrary::GetVersionedFilename(const char* libname, int major, int minor) {
+#if defined(_WIN32)
+ if (major >= 0 && minor >= 0)
+ return fmt::format("{}-{}-{}.dll", libname, major, minor);
+ else if (major >= 0)
+ return fmt::format("{}-{}.dll", libname, major);
+ else
+ return fmt::format("{}.dll", libname);
+#elif defined(__APPLE__)
+ const char* prefix = std::strncmp(libname, "lib", 3) ? "lib" : "";
+ if (major >= 0 && minor >= 0)
+ return fmt::format("{}{}.{}.{}.dylib", prefix, libname, major, minor);
+ else if (major >= 0)
+ return fmt::format("{}{}.{}.dylib", prefix, libname, major);
+ else
+ return fmt::format("{}{}.dylib", prefix, libname);
+#else
+ const char* prefix = std::strncmp(libname, "lib", 3) ? "lib" : "";
+ if (major >= 0 && minor >= 0)
+ return fmt::format("{}{}.so.{}.{}", prefix, libname, major, minor);
+ else if (major >= 0)
+ return fmt::format("{}{}.so.{}", prefix, libname, major);
+ else
+ return fmt::format("{}{}.so", prefix, libname);
+#endif
+}
+
+bool DynamicLibrary::Open(const char* filename) {
+#ifdef _WIN32
+ handle = reinterpret_cast<void*>(LoadLibraryA(filename));
+#else
+ handle = dlopen(filename, RTLD_NOW);
+#endif
+ return handle != nullptr;
+}
+
+void DynamicLibrary::Close() {
+ if (!IsOpen())
+ return;
+
+#ifdef _WIN32
+ FreeLibrary(reinterpret_cast<HMODULE>(handle));
+#else
+ dlclose(handle);
+#endif
+ handle = nullptr;
+}
+
+void* DynamicLibrary::GetSymbolAddress(const char* name) const {
+#ifdef _WIN32
+ return reinterpret_cast<void*>(GetProcAddress(reinterpret_cast<HMODULE>(handle), name));
+#else
+ return reinterpret_cast<void*>(dlsym(handle, name));
+#endif
+}
+
+} // namespace Common