Clever way of Gemini pro to use factory map for print ASCII art from input.

ASCII_TextGenerator.cpp

#include <iostream>
#include <vector>
#include <string>
#include <map>
#include <functional>
#include <stdexcept>
#include <algorithm>
#include <utility>
#include <cctype>

class AsciiArt {
public:
    explicit AsciiArt(std::vector<std::string> artLinesVector = {})
        : artLines(std::move(artLinesVector)) {
        artHeight = artLines.size();
        artWidth = 0;
        if (artHeight > 0) {
            for (const auto& line : artLines) {
                if (line.length() > artWidth) {
                    artWidth = line.length();
                }
            }
        }
    }

    const std::vector<std::string>& getLines() const { return artLines; }
    size_t getWidth() const { return artWidth; }
    size_t getHeight() const { return artHeight; }

private:
    std::vector<std::string> artLines;
    size_t artWidth = 0;
    size_t artHeight = 0;
};

std::ostream& operator<<(std::ostream& outputStream, const AsciiArt& artToPrint) {
    for (const auto& line : artToPrint.getLines()) {
        outputStream << line << '\n';
    }
    return outputStream;
}

AsciiArt operator+(const AsciiArt& leftHandSide, const AsciiArt& rightHandSide) {
    std::vector<std::string> combinedLines;
    const size_t maxHeight = std::max(leftHandSide.getHeight(), rightHandSide.getHeight());
    combinedLines.reserve(maxHeight);

    for (size_t i = 0; i < maxHeight; ++i) {
        std::string leftPart = (i < leftHandSide.getHeight()) ? leftHandSide.getLines()[i] : std::string(leftHandSide.getWidth(), ' ');
        std::string rightPart = (i < rightHandSide.getHeight()) ? rightHandSide.getLines()[i] : std::string(rightHandSide.getWidth(), ' ');
        
        if (leftPart.length() < leftHandSide.getWidth()) {
            leftPart.append(leftHandSide.getWidth() - leftPart.length(), ' ');
        }

        combinedLines.push_back(leftPart + rightPart);
    }

    return AsciiArt(combinedLines);
}

namespace ArtFactory {
    using ArtCreator = std::function<AsciiArt()>;
    const std::map<char, ArtCreator> artMap = {
        // Uppercase
        {'A', []{ return AsciiArt({"   #   ", "  # #  ", " #   # ", "#######", "#     #", "#     #", "#     #"}); }},
        {'B', []{ return AsciiArt({"###### ", "#    ##", "#    ##", "###### ", "#    ##", "#    ##", "###### "}); }},
        {'C', []{ return AsciiArt({"  #### ", " ##  ##", "##     ", "##     ", "##     ", " ##  ##", "  #### "}); }},
        {'D', []{ return AsciiArt({"#####  ", "##  ## ", "##   ##", "##   ##", "##   ##", "##  ## ", "#####  "}); }},
        {'E', []{ return AsciiArt({"#######", "##     ", "##     ", "###### ", "##     ", "##     ", "#######"}); }},
        {'F', []{ return AsciiArt({"#######", "##     ", "##     ", "###### ", "##     ", "##     ", "##     "}); }},
        {'G', []{ return AsciiArt({" ##### ", "##   ##", "##     ", "## ####", "##   ##", "##   ##", " ##### "}); }},
        {'H', []{ return AsciiArt({"#     #", "#     #", "#     #", "#######", "#     #", "#     #", "#     #"}); }},
        {'I', []{ return AsciiArt({"#######", "  ###  ", "  ###  ", "  ###  ", "  ###  ", "  ###  ", "#######"}); }},
        {'J', []{ return AsciiArt({"   ####", "    ###", "    ###", "    ###", "##  ###", "##  ###", " #### "}); }},
        {'K', []{ return AsciiArt({"#    ##", "#   ## ", "#  ##  ", "###    ", "#  ##  ", "#   ## ", "#    ##"}); }},
        {'L', []{ return AsciiArt({"##     ", "##     ", "##     ", "##     ", "##     ", "##     ", "#######"}); }},
        {'M', []{ return AsciiArt({"#     #", "##   ##", "# # # #", "#  #  #", "#     #", "#     #", "#     #"}); }},
        {'N', []{ return AsciiArt({"#     #", "##    #", "# #   #", "#  #  #", "#   # #", "#    ##", "#     #"}); }},
        {'O', []{ return AsciiArt({"  ###  ", " #   # ", "#     #", "#     #", "#     #", " #   # ", "  ###  "}); }},
        {'P', []{ return AsciiArt({"###### ", "##   ##", "##   ##", "###### ", "##     ", "##     ", "##     "}); }},
        {'Q', []{ return AsciiArt({" ##### ", "##   ##", "##   ##", "##   ##", "##  # #", "##   # ", " #### #"}); }},
        {'R', []{ return AsciiArt({"###### ", "##   ##", "##   ##", "###### ", "##  ## ", "##   ##", "##    ##"}); }},
        {'S', []{ return AsciiArt({"  #### ", "##    #", "##     ", "  ###  ", "     ##", "#    ##", " ####  "}); }},
        {'T', []{ return AsciiArt({"#######", "#######", "  ###  ", "  ###  ", "  ###  ", "  ###  ", "  ###  "}); }},
        {'U', []{ return AsciiArt({"#     #", "#     #", "#     #", "#     #", "#     #", " #   # ", "  ###  "}); }},
        {'V', []{ return AsciiArt({"#     #", "#     #", "#     #", " #   # ", " #   # ", "  # #  ", "   #   "}); }},
        {'W', []{ return AsciiArt({"#     #", "#     #", "#  #  #", "# # # #", "##   ##", "##   ##", "#     #"}); }},
        {'X', []{ return AsciiArt({"#     #", " #   # ", "  # #  ", "   #   ", "  # #  ", " #   # ", "#     #"}); }},
        {'Y', []{ return AsciiArt({"#     #", " #   # ", "  # #  ", "   #   ", "   #   ", "   #   ", "   #   "}); }},
        {'Z', []{ return AsciiArt({"#######", "     ##", "    ## ", "   ##  ", "  ##   ", " ##    ", "#######"}); }},
        // Lowercase
        {'a', []{ return AsciiArt({"       ", "       ", "  #### ", " #   ##", "  #####", "##   ##", " ##### "}); }},
        {'b', []{ return AsciiArt({"#      ", "#      ", "# #### ", "##   ##", "#    ##", "#    ##", "###### "}); }},
        {'c', []{ return AsciiArt({"       ", "       ", "  #### ", " ##    ", " ##    ", " ##    ", "  #### "}); }},
        {'d', []{ return AsciiArt({"     # ", "     ##", " #### #", "##   ##", "##   ##", "##   ##", " ##### "}); }},
        {'e', []{ return AsciiArt({"       ", "       ", " ##### ", "##   ##", "#######", "##     ", " ##### "}); }},
        {'f', []{ return AsciiArt({"   ##  ", "  #    ", " ####  ", "  #    ", "  #    ", "  #    ", "  #    "}); }},
        {'g', []{ return AsciiArt({"       ", " ##### ", "##   ##", "##   ##", " ##### ", "     ##", " ##### "}); }},
        {'h', []{ return AsciiArt({"#      ", "#      ", "## ### ", "###  ##", "#    ##", "#    ##", "#    ##"}); }},
        {'i', []{ return AsciiArt({"  ###  ", "       ", "  ###  ", "  ###  ", "  ###  ", "  ###  ", "  ###  "}); }},
        {'j', []{ return AsciiArt({"   ### ", "       ", "   ### ", "   ### ", "   ### ", "## ### ", " ####  "}); }},
        {'k', []{ return AsciiArt({"#      ", "#      ", "#   ## ", "#  ##  ", "###    ", "#  ##  ", "#   ## "}); }},
        {'l', []{ return AsciiArt({"  ###  ", "  ###  ", "  ###  ", "  ###  ", "  ###  ", "  ###  ", "   ##  "}); }},
        {'m', []{ return AsciiArt({"       ", "       ", "## # ##", "### ###", "# # # #", "# # # #", "# # # #"}); }},
        {'n', []{ return AsciiArt({"       ", "       ", "## ### ", "###  ##", "#    ##", "#    ##", "#    ##"}); }},
        {'o', []{ return AsciiArt({"       ", "       ", " ##### ", "##   ##", "##   ##", "##   ##", " ##### "}); }},
        {'p', []{ return AsciiArt({"       ", "###### ", "##   ##", "##   ##", "###### ", "##     ", "##     "}); }},
        {'q', []{ return AsciiArt({"       ", " ##### ", "##   ##", "##   ##", " ##### ", "   ####", "    ###"}); }},
        {'r', []{ return AsciiArt({"       ", "       ", "## ### ", "###  ##", "#      ", "#      ", "#      "}); }},
        {'s', []{ return AsciiArt({"       ", "       ", " ##### ", "##     ", " ##### ", "     ##", "#####  "}); }},
        {'t', []{ return AsciiArt({"  #    ", "  #    ", " ####  ", "  #    ", "  #    ", "  #  # ", "   ##  "}); }},
        {'u', []{ return AsciiArt({"       ", "       ", "#    ##", "#    ##", "#    ##", "##   ##", " ##### "}); }},
        {'v', []{ return AsciiArt({"       ", "       ", "#     #", "#     #", " #   # ", " #   # ", "  # #  "}); }},
        {'w', []{ return AsciiArt({"       ", "       ", "#     #", "# # # #", "# # # #", "##   ##", "#     #"}); }},
        {'x', []{ return AsciiArt({"       ", "       ", "#    ##", " #  # ", "  ##   ", " #  # ", "#    ##"}); }},
        {'y', []{ return AsciiArt({"       ", "#     #", " #   # ", "  # #  ", "   #   ", "  #    ", " #     "}); }},
        {'z', []{ return AsciiArt({"       ", "       ", "#######", "   ##  ", "  ##   ", " ##    ", "#######"}); }},
        // Numbers
        {'0', []{ return AsciiArt({" ##### ", "##   ##", "##  # ##", "## # ##", "###  ##", "##   ##", " ##### "}); }},
        {'1', []{ return AsciiArt({"  ##   ", " ###   ", "  ##   ", "  ##   ", "  ##   ", "  ##   ", "###### "}); }},
        {'2', []{ return AsciiArt({" ##### ", "##   ##", "    ## ", "   ##  ", "  ##   ", " ##    ", "#######"}); }},
        {'3', []{ return AsciiArt({" ##### ", "##   ##", "    ## ", "  #### ", "    ## ", "##   ##", " ##### "}); }},
        {'4', []{ return AsciiArt({"##   ##", "##   ##", "##   ##", "#######", "     ##", "     ##", "     ##"}); }},
        {'5', []{ return AsciiArt({"#######", "##     ", "###### ", "     ##", "     ##", "##   ##", " ##### "}); }},
        {'6', []{ return AsciiArt({" ##### ", "##     ", "##     ", "###### ", "##   ##", "##   ##", " ##### "}); }},
        {'7', []{ return AsciiArt({"#######", "##   ##", "    ## ", "   ##  ", "  ##   ", " ##    ", "##     "}); }},
        {'8', []{ return AsciiArt({" ##### ", "##   ##", "##   ##", " ##### ", "##   ##", "##   ##", " ##### "}); }},
        {'9', []{ return AsciiArt({" ##### ", "##   ##", "##   ##", " ######", "     ##", "     ##", " ##### "}); }},
        {' ', []{ return AsciiArt({"    ", "    ", "    ", "    ", "    ", "    ", "    "}); }}
    };

    AsciiArt createArtForChar(char character) {
        auto it = artMap.find(character);
        if (it != artMap.end()) {
            return it->second();
        }
        
        throw std::runtime_error("Unsupported character in input string: " + std::string(1, character));
    }
}

AsciiArt createArtFromString(const std::string& message) {
    if (message.empty()) {
        return AsciiArt();
    }

    AsciiArt finalArt;
    bool firstChar = true;

    for (char character : message) {
        AsciiArt charArt = ArtFactory::createArtForChar(character);
        if (firstChar) {
            finalArt = charArt;
            firstChar = false;
        } else {
            finalArt = finalArt + charArt;
        }
    }
    return finalArt;
}

int main() {
    std::string userInput;
    std::cout << "Message for ASCII art: ";
    std::getline(std::cin, userInput);

    try {
        AsciiArt finalArt = createArtFromString(userInput);
        std::cout << "===================================================================================================\n";
        std::cout << finalArt;
        std::cout << "===================================================================================================\n";
    } catch (const std::runtime_error& e) {
        std::cerr << "Error: " << e.what() << std::endl;
        std::cerr << "Please use only supported characters (A-Z, a-z, 0-9, space)." << std::endl;
        return 1;
    } catch (const std::exception& e) {
        std::cerr << "An unexpected error occurred: " << e.what() << std::endl;
        return 1;
    }

    return 0;
}