mirror of https://github.com/bsnes-emu/bsnes.git
116 lines
3.0 KiB
C++
116 lines
3.0 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_OSX)
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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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bool opened() const { return handle; }
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bool open(const char*, const char* = "");
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bool open_absolute(const char*);
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void* sym(const char*);
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void close();
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library() : handle(0) {}
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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;
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};
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#if defined(PLATFORM_X)
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inline bool library::open(const char *name, const char *path) {
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if(handle) close();
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handle = (uintptr_t)dlopen(string(path, *path && !strend(path, "/") ? "/" : "", "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 char *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 char *name) {
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if(!handle) return 0;
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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_OSX)
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inline bool library::open(const char *name, const char *path) {
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if(handle) close();
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handle = (uintptr_t)dlopen(string(path, *path && !strend(path, "/") ? "/" : "", "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 char *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 char *name) {
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if(!handle) return 0;
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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 char *name, const char *path) {
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if(handle) close();
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string filepath(path, *path && !strend(path, "/") && !strend(path, "\\") ? "\\" : "", 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 char *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 char *name) {
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if(!handle) return 0;
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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 char*, const char*) { return false; }
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inline void* library::sym(const char*) { return 0; }
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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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