Class: Asciimation::ArgumentParser

Inherits:
Object
  • Object
show all
Defined in:
lib/asciimation/argument_parser.rb

Constant Summary collapse

DEFAULT_OPTIONS = 
{animator: "drop", duration: 5.0}

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ ArgumentParser

Returns a new instance of ArgumentParser.



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# File 'lib/asciimation/argument_parser.rb', line 7

def initialize(args)
  @args = args
end

Instance Method Details

#to_hash ⇒ Object 



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# File 'lib/asciimation/argument_parser.rb', line 14

def to_hash
  options = DEFAULT_OPTIONS.dup
  hash    = {io: nil, options: options}

  args.options do |parser|
    parser.banner =
      "Usage:  #{File.basename($PROGRAM_NAME)} [OPTIONS] ASCII_ART_PATH"

    parser.separator ""
    parser.separator "Specific Options:"

    parser.on( "--animator NAME", String,
               "The animator to use." ) do |animator|
      options[:animator] = animator
    end
    parser.on( "-o", "--duration SECONDS", Float,
               "The seconds this animation should last." ) do |duration|
      options[:duration] = duration
    end

    parser.separator "Common Options:"

    parser.on( "-h", "--help",
               "Show this message." ) do
      puts parser
      exit
    end

    begin
      path      = args.shift or abort parser.to_s
      hash[:io] = open(path)

      parser.parse!
    rescue OptionParser::ParseError
      abort parser.to_s
    end
  end

  hash
end