markov-generator/src/generator.cpp

#include "generator.hpp"
#include <iostream>

void Generator::SetArguments(int argc, char* argv[]) {
    std::string tempStr;
    for (int i = 1; i < argc; ++i) {
        tempStr.assign(argv[i]);
        if (tempStr == "-i") {
            setup.isFileSet = true;
            ++i;
            setup.filename.assign(argv[i]);
        }
        if (tempStr == "-k") {
            setup.isPrefixSet = true;
            ++i;
            setup.prefixLength = std::stoi(argv[i]);
        }
        if (tempStr == "-n") {
            setup.isOutputSet = true;
            ++i;
            setup.outputLength = std::stoi(argv[i]);
        }
        if (tempStr == "-h") {
            PrintUsage();
            exit(0);
        }
    }
    if (!setup.isFileSet) { std::cerr << "[Setup - Error] Filename not specified" << std::endl; }
    if (!setup.prefixLength) { std::cerr << "[Setup - Error] Prefix length not specified" << std::endl; }
    if (!setup.outputLength) { std::cerr << "[Setup - Error] Output length not specified" << std::endl; }
    if (!setup.isFileSet || !setup.isPrefixSet || !setup.isOutputSet) { PrintUsage(); }
}

void PrintUsage(void) {
    std::cout << "Usage:  markov -i input_file -k prefix_length -n output_length" << std::endl;
    std::cout << "        -i: Direct path to input file for basis" << std::endl;
    std::cout << "        -k: Prefix length for Markov chain" << std::endl;
    std::cout << "        -n: Length of output to be generated (words)" << std::endl;
    std::cout << "        -h: Prints this usage text" << std::endl;
}