mirror of https://github.com/bsnes-emu/bsnes.git
120 lines
3.1 KiB
C++
120 lines
3.1 KiB
C++
#ifndef NALL_DL_HPP
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#define NALL_DL_HPP
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//dynamic linking support
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#include <nall/intrinsics.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_X) || defined(PLATFORM_MACOSX)
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#include <dlfcn.h>
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#elif defined(PLATFORM_WINDOWS)
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#include <windows.h>
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#include <nall/windows/utf8.hpp>
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#endif
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namespace nall {
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struct library {
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explicit operator bool() const { return open(); }
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bool open() const { return handle; }
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bool open(const string&, const string& = "");
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bool open_absolute(const string&);
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void* sym(const string&);
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void close();
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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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private:
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uintptr_t handle = 0;
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};
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#if defined(PLATFORM_X)
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inline bool library::open(const string& name, const string& path) {
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if(handle) close();
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handle = (uintptr_t)dlopen(string(path, !path.empty() && !path.endsWith("/") ? "/" : "", "lib", name, ".so"), RTLD_LAZY);
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if(!handle) handle = (uintptr_t)dlopen(string("/usr/local/lib/lib", name, ".so"), RTLD_LAZY);
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return handle;
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}
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inline bool library::open_absolute(const string& name) {
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if(handle) close();
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handle = (uintptr_t)dlopen(name, RTLD_LAZY);
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return handle;
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}
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inline void* library::sym(const string& name) {
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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 void library::close() {
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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_MACOSX)
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inline bool library::open(const string& name, const string& path) {
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if(handle) close();
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handle = (uintptr_t)dlopen(string(path, !path.empty() && !path.endsWith("/") ? "/" : "", "lib", name, ".dylib"), RTLD_LAZY);
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if(!handle) handle = (uintptr_t)dlopen(string("/usr/local/lib/lib", name, ".dylib"), RTLD_LAZY);
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return handle;
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}
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inline bool library::open_absolute(const string& name) {
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if(handle) close();
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handle = (uintptr_t)dlopen(name, RTLD_LAZY);
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return handle;
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}
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inline void* library::sym(const string& name) {
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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 void library::close() {
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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 bool library::open(const string& name, const string& path) {
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if(handle) close();
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string filepath(path, !path.empty() && !path.endsWith("/") && !path.endsWith("\\") ? "/" : "", name, ".dll");
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handle = (uintptr_t)LoadLibraryW(utf16_t(filepath));
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return handle;
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}
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inline bool library::open_absolute(const string& name) {
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if(handle) close();
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handle = (uintptr_t)LoadLibraryW(utf16_t(name));
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return handle;
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}
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inline void* library::sym(const string& name) {
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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 void library::close() {
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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 bool library::open(const string&, const string&) { return false; }
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inline bool library::open_absolute(const string&) { return false; }
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inline void* library::sym(const string&) { return nullptr; }
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inline void library::close() {}
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#endif
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}
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#endif
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