Templatized C++ Command Line Parser Files

TCLAP - Templatized Command Line Argument Parser

This is a simple C++ library that facilitates parsing command line
arguments in a type independent manner. It doesn't conform exactly
to either the GNU or POSIX standards, although it is close. See
docs/manual.html for descriptions of how things work or look at the
simple examples in the examples dir.

Versions and stability
----------------------

  1.2  For existing integrations that require the legacy 1.2 API or
       behavior. Receives only critical bug fixes.
  1.4  Recommended for projects requiring C++98 compatibility.
       Maintenance version with no new feature development.
  1.6  Recommended for projects using C++20 or later. Modernized
       internals with an API mostly source compatible with 1.4.
  2.0  A modern C++20 alternative under active development.
       Not yet stable; expect API breakages.

For stable integrations, choose 1.4 (C++98) or 1.6 (C++20).
Choose the version that matches your project's C++ and API requirements.

Quick start
-----------

This example uses the TCLAP 1.4 API. Add <tclap/CmdLine.h>, <iostream>
and <string> to the includes and save as hello.cpp.

    int main(int argc, char **argv) {
        try {
            TCLAP::CmdLine cmd("Print a greeting.", ' ', "1.0");
            TCLAP::ValueArg<std::string> name(
                "n", "name", "Name to greet", false, "world", "string", cmd);
            cmd.parse(argc, argv);
            std::cout << "Hello, " << name.getValue() << "!\n";
        } catch (const TCLAP::ArgException &e) {
            std::cerr << e.what() << '\n';
            return 1;
        }
        return 0;
    }

With TCLAP headers on your include path, compile and run:

    c++ -std=c++98 hello.cpp -o hello
    ./hello
    Hello, world!
    ./hello --name Ada
    Hello, Ada!

Use -n Ada for the short form, or --help to see all options.

Any and all feedback is welcome at https://sf.net/p/tclap/discussion/