cpp-mini-argparse

A small library to parse command line arguments in C++, without external dependencies besides the standard library.

This was made in a hurry for a specific project, to avoid license issues.

It supports:

• Flag and store (one value) arguments
• A short and a long alias for an argument
• A basic usage print

It requires:

• A C++11 compiler
• The C++ standard library (iostream, list, map and string)

Note: This is not a production-ready library, but it can be useful for some developments.

Sample usage

This snippet can be found in the sample folder.

#include<iostream>
#include"argparse/argparse.hpp"usingnamespaceargparse;usingnamespacestd;intmain(constint argc, constchar **argv)
{
try
{
auto parser = ArgumentParser("FooBar");
parser.add_argument("help", "-h", "--help", "Displays the help message");
parser.add_argument("conf", "-c", "--conf", "Path to a file", STORE);
parser.add_argument("force", "-f", "", "Force hello world", FLAG);
if (!parser.parse(argv, argc))
{
cout << "Error parsing arguments" << endl;
return1;
}
elseif (parser.get("help").is_set())
{
parser.print_usage();
return0;
}
auto conf_arg = parser.get("conf");
if (conf_arg.is_set())
{
cout << "Conf file: " << conf_arg.get_value() << endl;
}
else
{
cout << "No configuration given." << endl;
}
if(parser.get("force").is_set())
{
cout << "HELLO WORLD" << endl;
}
}
catch (constchar *error)
{
cerr << "ERROR: " << error << endl;
return1;
}
catch (std::string &error)
{
cerr << "ERROR: " << error << endl;
return1;
}
return0;
}

Build samples

The samples can be compiled using CMake (3.5+):

1. Create the cache directory: mkdir build
2. Move inside it cd build
3. Prepare the build environment: cmake ..
4. Build the project: cmake --build .
5. Run a sample: ./basic-sample -h or ./Debug/basic-sample -h according to the CMake version and OS.