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https://github.com/DerKoun/bsnes-hd.git
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127 lines
3.5 KiB
C++
127 lines
3.5 KiB
C++
#pragma once
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//dynamic linking support
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#include <nall/intrinsics.hpp>
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#include <nall/path.hpp>
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#include <nall/stdint.hpp>
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#include <nall/string.hpp>
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#include <nall/utility.hpp>
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#if defined(PLATFORM_WINDOWS)
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#include <nall/windows/utf8.hpp>
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#else
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#include <dlfcn.h>
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#endif
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namespace nall {
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struct library {
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library() = default;
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~library() { close(); }
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library& operator=(const library&) = delete;
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library(const library&) = delete;
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explicit operator bool() const { return open(); }
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auto open() const -> bool { return handle; }
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auto open(const string&, const string& = "") -> bool;
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auto openAbsolute(const string&) -> bool;
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auto sym(const string&) -> void*;
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auto close() -> void;
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private:
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uintptr handle = 0;
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};
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#if defined(PLATFORM_LINUX) || defined(PLATFORM_BSD)
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inline auto library::open(const string& name, const string& path) -> bool {
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if(handle) close();
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if(path) handle = (uintptr)dlopen(string(path, "lib", name, ".so"), RTLD_LAZY);
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if(!handle) handle = (uintptr)dlopen(string(Path::user(), ".local/lib/lib", name, ".so"), RTLD_LAZY);
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if(!handle) handle = (uintptr)dlopen(string("/usr/local/lib/lib", name, ".so"), RTLD_LAZY);
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if(!handle) handle = (uintptr)dlopen(string("lib", name, ".so"), RTLD_LAZY);
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return handle;
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}
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inline auto library::openAbsolute(const string& name) -> bool {
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if(handle) close();
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handle = (uintptr)dlopen(name, RTLD_LAZY);
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return handle;
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}
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inline auto library::sym(const string& name) -> void* {
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if(!handle) return nullptr;
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return dlsym((void*)handle, name);
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}
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inline auto library::close() -> void {
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if(!handle) return;
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dlclose((void*)handle);
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handle = 0;
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}
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#elif defined(PLATFORM_MACOS)
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inline auto library::open(const string& name, const string& path) -> bool {
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if(handle) close();
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if(path) handle = (uintptr)dlopen(string(path, "lib", name, ".dylib"), RTLD_LAZY);
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if(!handle) handle = (uintptr)dlopen(string(Path::user(), ".local/lib/lib", name, ".dylib"), RTLD_LAZY);
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if(!handle) handle = (uintptr)dlopen(string("/usr/local/lib/lib", name, ".dylib"), RTLD_LAZY);
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if(!handle) handle = (uintptr)dlopen(string("lib", name, ".dylib"), RTLD_LAZY);
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return handle;
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}
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inline auto library::openAbsolute(const string& name) -> bool {
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if(handle) close();
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handle = (uintptr)dlopen(name, RTLD_LAZY);
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return handle;
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}
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inline auto library::sym(const string& name) -> void* {
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if(!handle) return nullptr;
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return dlsym((void*)handle, name);
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}
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inline auto library::close() -> void {
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if(!handle) return;
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dlclose((void*)handle);
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handle = 0;
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}
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#elif defined(PLATFORM_WINDOWS)
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inline auto library::open(const string& name, const string& path) -> bool {
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if(handle) close();
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if(path) {
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string filepath = {path, name, ".dll"};
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handle = (uintptr)LoadLibraryW(utf16_t(filepath));
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}
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if(!handle) {
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string filepath = {name, ".dll"};
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handle = (uintptr)LoadLibraryW(utf16_t(filepath));
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}
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return handle;
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}
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inline auto library::openAbsolute(const string& name) -> bool {
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if(handle) close();
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handle = (uintptr)LoadLibraryW(utf16_t(name));
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return handle;
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}
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inline auto library::sym(const string& name) -> void* {
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if(!handle) return nullptr;
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return (void*)GetProcAddress((HMODULE)handle, name);
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}
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inline auto library::close() -> void {
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if(!handle) return;
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FreeLibrary((HMODULE)handle);
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handle = 0;
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}
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#else
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inline auto library::open(const string&, const string&) -> bool { return false; }
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inline auto library::openAbsolute(const string&) -> bool { return false; }
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inline auto library::sym(const string&) -> void* { return nullptr; }
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inline auto library::close() -> void {}
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#endif
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}
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