ArgParser

argparse-like command line argument parsing in c++

• header-only
  • include a single header file
  • with binary examples
• requires c++11 or Visual Studio 2017 or later
• build with CMake

Features

• handles non-ascii command line inputs
  • on Linux, just use UTF-8
  • on Windows you can use wide-char-strings
  • although, printing of std::wstring variables is not trivial (see example)
• custom conditions can be applied to options
  • min-max bounds
  • choice from a predefined set
  • any bool-valued function can be provided
• strict option
  • if set, the parser calls exit(1) on any trouble
  • if not set, then return value and error message tells you the problems, but the application continues.
    • in case of any trouble, your initial variables won't be changed. No incomplete state in the options!

Examples

Minimal arguments:

int main(int argc, const char** argv)
{
    double x;
    std::string s;

    arg::Parser<> parser("Header, some info",
        { "-h", "--help" } /*help options*/,
        std::cout, std::cerr  /*you have to specify the output streams! */
    );
    parser.AddArg(x);
    parser.AddArg(s, { "-s", "--string" }, "relative path", "filename");

    parser.Do(argc, argv);
    
    return 0;
}

And you're done!