Yawpa

Yet Another Way to Parse Arguments is an argument-parsing library for Ruby.

Features

• POSIX or non-POSIX mode (supports subcommands using POSIX mode)
• Options can require an arbitrary number of parameters
• Options can be defined with a range specifying the allowed number of parameters

Installation

Add this line to your application's Gemfile:

gem 'yawpa'

And then execute:

$ bundle

Or install it yourself as:

$ gem install yawpa

Example 1

require 'yawpa'

options = {
  version: {},
  verbose: {short: 'v'},
  get: {nargs: 1},
  set: {nargs: 2},
}
opts, args = Yawpa.parse(ARGV, options)
opts.each_pair do |opt, val|
end

Example 2

require 'yawpa'

options = {
  version: {},
  help: {short: 'h'},
}
opts, args = Yawpa.parse(ARGV, options, posix_order: true)
if opts[:version]
  puts "my app, version 1.2.3"
end
if args[0] == 'subcommand'
  subcommand_options = {
    'server': {nargs: (1..2), short: 's'},
    'dst': {nargs: 1, short: 'd'},
  }
  opts, args = Yawpa.parse(args, subcommand_options)
end

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request