Yet another optparse

[Kirk McDonald]

Knowing that D already has (by my count) three command-line argument 
parsers, I have gone and written my own, anyway. As with at least one 
other of the parsers that I've seen, it is (at least loosely) based on 
Python's optparse library. You can find it here:

http://dsource.org/projects/pyd/browser/misc/optparse.d

An example of its use can be found here:

http://dsource.org/projects/pyd/browser/misc/opttest.d

Or right here:

module test;
import optparse;

void main(char[][] args) {
     auto parser = new OptionParser;
     // Stores the option's argument.
     parser.add_option("-f", "--file");
     // Appends the option's argument to a list.
     parser.add_option(["-I", "--import"], Action.Append);
     auto options = parser.parse_args(args);

     char[] file = options["file"];
     char[][] imports = options.list("import");
     writefln("file: ", file);
     writefln("imports: ", imports);
     // Any arguments that don't start with '-' are stored
     // in the args array.
     writefln("leftovers: ", options.args);
}

$ ./test -Isomedir --import otherdir --file=somefile anotherfile
file: somefile
imports: [somedir,otherdir]
leftovers: [anotherfile]

Optparse has a number of other features, including support for callbacks 
and integer arguments. The opttest.d file above shows off some of these 
features.

It's released under the MIT license, so feel free to use it for whatever.

-- 
Kirk McDonald
Pyd: Wrapping Python with D
http://pyd.dsource.org