Added count() and random_choice() functions

plugin.hpp

@@ -14,6 +14,7 @@
 #include <map>
 #include <functional>
 #include <iostream>
+#include <random>
 #include <dlfcn.h>
 #include <dirent.h>
 #include <libscerror.hpp>
@@ -59,10 +60,18 @@ namespace sc {
 				return result;
 			}
 
+			static size_t count() { return plugins.size(); }
+
+			static plugin& random_choice() {
+				static std::random_device rdev {};
+				static std::default_random_engine reng {rdev()};
+				std::uniform_int_distribution<int> dist {0, count() - 1};
+				return get(names()[dist(reng)]);
+			}
+
 			plugin(const std::string& path) : _path {path} {
 				_plugin = ::dlopen(path.c_str(), RTLD_LAZY);
 
-			//std::cerr << path << (_plugin ? "" : " not") << " opened\n";
 				const char* err {::dlerror()};
 				if (err) std::cerr << err << '\n';
 				if (_plugin) {
@@ -77,7 +86,6 @@ namespace sc {
 				if (_plugin) {
 					::dlclose(_plugin);
 					_plugin = nullptr;
-				//std::cerr << _path << " closed\n";
 				}
 			}