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Added count() and random_choice() functions

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This commit is contained in:
Bob Polis 2021-10-05 14:25:04 +02:00
parent f1095f294a
commit b576c1cfe6
1 changed files with 87 additions and 79 deletions
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12
plugin.hpp
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@ -14,6 +14,7 @@
#include <map> #include <map>
#include <functional> #include <functional>
#include <iostream> #include <iostream>
#include <random>
#include <dlfcn.h> #include <dlfcn.h>
#include <dirent.h> #include <dirent.h>
#include <libscerror.hpp> #include <libscerror.hpp>
@ -59,10 +60,18 @@ namespace sc {
return result; 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(const std::string& path) : _path {path} {
_plugin = ::dlopen(path.c_str(), RTLD_LAZY); _plugin = ::dlopen(path.c_str(), RTLD_LAZY);
//std::cerr << path << (_plugin ? "" : " not") << " opened\n";
const char* err {::dlerror()}; const char* err {::dlerror()};
if (err) std::cerr << err << '\n'; if (err) std::cerr << err << '\n';
if (_plugin) { if (_plugin) {
@ -77,7 +86,6 @@ namespace sc {
if (_plugin) { if (_plugin) {
::dlclose(_plugin); ::dlclose(_plugin);
_plugin = nullptr; _plugin = nullptr;
//std::cerr << _path << " closed\n";
} }
} }