Input parser

Aim

This is a simple example to show an argument input parser. You can set default value, required or not, short name and full name.

Source

github

#include <iostream>
#include "InputParser.h"

// Usage: ./InputParser --input abc.txt
// Usage: ./InputParser
int main(int argc, char *argv[])
{
    InputParser parser;
    parser.AddOption("i", "input", true); // required value example
    parser.AddOption("n", "number", false, "20"); // default value example
    parser.AddOption("o", "output"); // optional value example
    if (!parser.DoParse(argc, argv, true))
    {
        std::cout << "ERR not enough arguments" << std::endl;
        return 1;
    }

    std::cout << "input: " << parser["i"] << std::endl;
    std::cout << "number: " << std::stoi(parser["n"]) << std::endl;
    std::cout << "output: " << parser["o"] << std::endl;
    return 0;
}

Output

$ ./src/InputParser --input abc.txt
input: abc.txt
number: 20
output: 

$ ./src/InputParser
ERR: Option is needed --input
ERR: Usage: YourApp [-o|--output] <output>
 [-i|--input] <input>
 [-n|--number] <number>
ERR not enough arguments