Crate easy_args

Utility for simple and declarative style command line argument parsing.

easy-args is meant to be used to set up simple command-line argumenst for your applications and give them back in an easy to process way.

Getting Started

First you must define an [ArgSpec] which will determine what the command-line arguments are for your program and will be used by the parser to do some simple checks.

You make an [ArgSpec] with the builder pattern.

let arg_spec = ArgSpec::build()
    .boolean("windowed")
    .string("mode")
    .done();

Second you call [ArgSpecs]’s [parse()] method to retrieve the command-line arguments in a processed form.

let args = arg_spec.parse()?;
if let Some(_) = args.boolean("windowed") {
    // Put application into windowed mode
}

And that’s it! The arguments have been parsed and processed and can be accessed via [Args]’s getter methods.

[ArgSpec] also has a [parse()] method so you don’t have to make a throwaway variable.

let args = ArgSpec::build()
    .boolean("windowed")
    .string("mode")
    .parse()?;

Modules

args
errors
spec