12 using kv_pair = pair<string, string>;
15 enable_if_t<is_integral_v<T>, T> random_num(T min, T max) {
16 using namespace chrono;
18 using dst = uniform_int_distribution<T>;
20 auto time = duration_cast<nanoseconds>(system_clock::now().time_since_epoch());
21 auto seed = static_cast<rnd::result_type>(time.count() % numeric_limits<T>::max());
22 auto rgen = rnd{seed};
23 return dst(min, max)(rgen);
26 unsigned random_port();
27 string random_port_string(const string &);
30 string random_binary_string(size_t len);
31 char random_ascii(char min = '!', char max = '~');
32 string random_ascii_string(size_t len, char min = '!', char max = '~');
33 kv_pair random_ascii_pair(size_t minlen = 1<<2, size_t maxlen = 1<<10);
35 template<template <typename> class Container>
36 auto random_ascii_pairs(size_t count, size_t minlen = 1<<2, size_t maxlen = 1<<10) {
40 for (size_t i = 0; i < count; ++i) {
41 v.emplace_back(random_ascii_pair(minlen, maxlen));
47 string random_socket(const string &prefix = "/tmp/libmc.");
48 string random_socket_or_port_string(const string &what);
49 string random_socket_or_port_flag(const string &binary);
51 inline auto random_socket_or_port_arg() {
52 return make_pair(&random_socket_or_port_flag, &random_socket_or_port_string);