password-analyzer/stat_struct.cpp

#include <algorithm>
#include <map>
#include <sstream>
#include <vector>
#include "defs.hpp"

std::string get_struct(const std::string &password) {
    auto mapper = [](char c) {
        if (is_num(c))
            return 'D';
        else if (is_alpha(c))
            return 'L';
        else
            return 'S';
    };

    auto v = password | std::views::transform(mapper);

    std::ostringstream ret;

    for (auto cur = v.begin(); cur != v.end();) {
        auto ch  = *cur;
        auto nxt = std::adjacent_find(cur, v.end(), std::not_equal_to<>());
        auto end = nxt == v.end();
        ret << ch << std::distance(cur, nxt) + !end;
        cur = end ? nxt : std::next(nxt);
    }

    return ret.str();
}

void stat_struct(const DataSource &source) {
    timeit(fmt::format("stat_struct({})", magic_enum::enum_name(source)));

    std::map<std::string, size_t> stat;
    for (auto const &password : passwords(source)) ++stat[get_struct(password)];

    std::vector<std::pair<std::string, size_t>> vec(stat.begin(), stat.end());
    std::sort(vec.begin(), vec.end(), [](auto const &lhs, auto const &rhs) { return lhs.second > rhs.second; });

    for (auto const &[struct_, count] : vec | std::views::take(15)) spdlog::info("{}: {}", struct_, count);
}