datalore/random-username-generator
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feat: Added optional param for seed

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datalore
2024-04-16 20:43:43 +02:00
parent d6e506eaeb
commit 0467f94fd3
3 changed files with 16 additions and 4 deletions
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2
include/generate.h
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@@ -1,3 +1,3 @@
#pragma once #pragma once
void generate(short min_char_count, short max_char_count, short min_num_count, short max_num_count, int count); void generate(short min_char_count, short max_char_count, short min_num_count, short max_num_count, int count, std::string seed);

14
src/generate.cc
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@@ -2,9 +2,19 @@
#include <random> #include <random>
#include <chrono> #include <chrono>
void generate(short min_char_count, short max_char_count, short min_num_count, short max_num_count, int count) void generate(short min_char_count, short max_char_count, short min_num_count, short max_num_count, int count, std::string seed)
{ {
std::mt19937 engine(std::chrono::system_clock::now().time_since_epoch().count()); std::mt19937 engine;
if(seed != "")
{
std::seed_seq seq(seed.begin(),seed.end());
engine.seed(seq);
}
else
{
engine.seed(std::chrono::system_clock::now().time_since_epoch().count());
}
std::uniform_int_distribution<short> char_count_distribution(min_char_count, max_char_count); std::uniform_int_distribution<short> char_count_distribution(min_char_count, max_char_count);
std::uniform_int_distribution<char> char_distribution('a', 'z'); std::uniform_int_distribution<char> char_distribution('a', 'z');

4
src/main.cc
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@@ -12,6 +12,7 @@ int main(int argc, char** argv)
("min-num", "The minimum number of digits", cxxopts::value<short>()->default_value("0")) ("min-num", "The minimum number of digits", cxxopts::value<short>()->default_value("0"))
("max-num", "The maximum number of digits", cxxopts::value<short>()->default_value("4")) ("max-num", "The maximum number of digits", cxxopts::value<short>()->default_value("4"))
("count", "How many usernames should be generated", cxxopts::value<int>()->default_value("1")) ("count", "How many usernames should be generated", cxxopts::value<int>()->default_value("1"))
("seed", "String used as seed sequence. If not defined, system time will be used instead.", cxxopts::value<std::string>()->default_value(""))
("h,help", "Print help") ("h,help", "Print help")
; ;
@@ -28,6 +29,7 @@ int main(int argc, char** argv)
short min_num = result["min-num"].as<short>(); short min_num = result["min-num"].as<short>();
short max_num = result["max-num"].as<short>(); short max_num = result["max-num"].as<short>();
int count = result["count"].as<int>(); int count = result["count"].as<int>();
std::string seed(result["seed"].as<std::string>());
if(min_char > max_char) if(min_char > max_char)
{ {
@@ -53,6 +55,6 @@ int main(int argc, char** argv)
return -1; return -1;
} }
generate(min_char, max_char, min_num, max_num, count); generate(min_char, max_char, min_num, max_num, count, seed);
return 0; return 0;
} }