libclimate-ruby

https://github.com/synesissoftware/libCLImate.Ruby

libCLImate is a portable, lightweight mini-framework that encapsulates the common aspects of Command-Line Interface boilerplate, including: - command-line argument parsing and sorting, into flags, options, and values; - validating given and/or missing arguments; - a declarative form of specifying the CLI elements for a program, including associating blocks with flag/option specifications; - provision of de-facto standard CLI facilities, such as responding to '--help' and '--version'; libCLImate.Ruby is the Ruby version.