obfuscate.cpp

#include "header.hpp"
#include <algorithm>

void obfuscate(std::ifstream &in, BYTE b)
{
    static std::vector<std::pair<std::string, std::string>> lib;
    static bool add_to_lib{false};
    std::string bytes;
    std::string letters{"qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM"};
    static size_t counter{0};
    std::string counterToChars;

    if (!ispunct(b) && !isspace(b))
    {
        bytes += b;
        while (!ispunct(in.peek()) && !isspace(in.peek()))
        {
            bytes += in.get();
        }
    }
    else
    {
        std::cout << b;
        return;
    }
    if (add_to_lib)
    {
        // check if allready found
        auto it = find_if(lib.begin(), lib.end(),
                          [&](const std::pair<std::string, std::string> &val) -> bool
                          {
                              return val.first == bytes;
                          });
        // if found, use that
        if (it != lib.end())
        {
            std::cout << it->second;
        }
        // if not found, add to lib
        else
        {
            size_t temp{counter};
            do
            {
                counterToChars += letters[temp % letters.size()];
                temp /= letters.size();
            } while (temp != 0);
            lib.emplace_back(std::make_pair(bytes, counterToChars));
            std::cout << lib.back().second;
            counter++;
        }
        add_to_lib = false;
    }
    else if (bytes == "const" || bytes == "var" || bytes == "let")
    {
        add_to_lib = true;
        std::cout << bytes;
    }
    else
    {
        auto it = find_if(lib.begin(), lib.end(),
                          [&](const std::pair<std::string, std::string> &val) -> bool
                          {
                              return val.first == bytes;
                          });
        if (it != lib.end())
        {
            std::cout << it->second;
        }
        else
        {
            std::cout << bytes;
        }
    }
}