flag_parser

Yet another command line flag parser library :)

Installation

Add this to your application’s shard.yml:

dependencies:
  flag_parser:
    github: bew/flag_parser.cr

Usage

require "flag_parser"
value = 0
args = %w(--option 42)
FlagParser.parse args do |parser|
  parser.add_rule "VALUE", FlagParser::Rule::NUM
  parser.on "-o VALUE", "--option VALUE", doc: "Set option value" do |(a_value)|
    value = a_value.to_i
  end
end
puts value # => 42

TODO: Write more usage instructions here

TODO

[ ] execution policy (1. parse all THEN exec handler, 2. or parse AND exec when possible)

1. will be hard (impossible ?) when a callback comsume arguments based on runtime state.. ?

[ ] recursive options : options that are applied on subparsers
[ ] Exceptions on missing or no match

Contributing

1. Fork it ( https://github.com/bew/flag_parser.cr/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am ‘Add some feature’)
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Contributors

• bew Benoit de Chezelles - creator, maintainer