File size: 3,021 Bytes
034d0a2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 | // Copyright 2023 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <fmt/format.h>
#if defined(_WIN32)
#include <windows.h>
#else
#include <dlfcn.h>
#endif
#include "dynamic_library.h"
namespace Common {
DynamicLibrary::DynamicLibrary() = default;
DynamicLibrary::DynamicLibrary(void* handle_) : handle{handle_} {}
DynamicLibrary::DynamicLibrary(std::string_view name, int major, int minor) {
auto full_name = GetLibraryName(name, major, minor);
void(Load(full_name));
}
DynamicLibrary::~DynamicLibrary() {
if (handle) {
#if defined(_WIN32)
FreeLibrary(reinterpret_cast<HMODULE>(handle));
#else
dlclose(handle);
#endif // defined(_WIN32)
handle = nullptr;
}
}
bool DynamicLibrary::Load(std::string_view filename) {
#if defined(_WIN32)
handle = reinterpret_cast<void*>(LoadLibraryA(filename.data()));
if (!handle) {
DWORD error_message_id = GetLastError();
LPSTR message_buffer = nullptr;
std::size_t size =
FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
nullptr, error_message_id, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
reinterpret_cast<LPSTR>(&message_buffer), 0, nullptr);
std::string message(message_buffer, size);
load_error = message;
return false;
}
#else
handle = dlopen(filename.data(), RTLD_LAZY);
if (!handle) {
load_error = dlerror();
return false;
}
#endif // defined(_WIN32)
return true;
}
void* DynamicLibrary::GetRawSymbol(std::string_view name) const {
#if defined(_WIN32)
return reinterpret_cast<void*>(GetProcAddress(reinterpret_cast<HMODULE>(handle), name.data()));
#else
return dlsym(handle, name.data());
#endif // defined(_WIN32)
}
std::string DynamicLibrary::GetLibraryName(std::string_view name, int major, int minor) {
#if defined(_WIN32)
if (major >= 0 && minor >= 0) {
return fmt::format("{}-{}-{}.dll", name, major, minor);
} else if (major >= 0) {
return fmt::format("{}-{}.dll", name, major);
} else {
return fmt::format("{}.dll", name);
}
#elif defined(__APPLE__)
auto prefix = name.starts_with("lib") ? "" : "lib";
if (major >= 0 && minor >= 0) {
return fmt::format("{}{}.{}.{}.dylib", prefix, name, major, minor);
} else if (major >= 0) {
return fmt::format("{}{}.{}.dylib", prefix, name, major);
} else {
return fmt::format("{}{}.dylib", prefix, name);
}
#else
auto prefix = name.starts_with("lib") ? "" : "lib";
if (major >= 0 && minor >= 0) {
return fmt::format("{}{}.so.{}.{}", prefix, name, major, minor);
} else if (major >= 0) {
return fmt::format("{}{}.so.{}", prefix, name, major);
} else {
return fmt::format("{}{}.so", prefix, name);
}
#endif
}
} // namespace Common
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