Module: Feedig::OptParser

Defined in:
lib/feedig/optparse.rb

Class Method Summary collapse

Class Method Details

.cast(opts) ⇒ Object 



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# File 'lib/feedig/optparse.rb', line 53

def self.cast(opts)
  opts.inject({}) {|r, i|
    key, value = i[0], i[1]
    r.update key => case value
                    when nil                      then true
                    when /\A\d+\z/                then value.to_i
                    when /\A(?:\d+\.\d*|\.\d+)\z/ then value.to_f
                    else                               value
                    end
  }
end

.parse!(argv) ⇒ Object 



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# File 'lib/feedig/optparse.rb', line 4

def self.parse!(argv)
  opts = {
    :port  => 16705,
    :host  => "localhost",
    :interval => 30,
    :log   => nil,
    :debug => false,
    :foreground => false,
  }

  OptionParser.new do |parser|
    parser.instance_eval do
      self.banner  = "Usage: #{$0} [opts]"
      separator ""

      separator "Options:"
      on("-p", "--port [PORT=#{opts[:port]}]", "port number to listen") do |port|
        opts[:port] = port
      end

      on("-h", "--host [HOST=#{opts[:host]}]", "host name or IP address to listen") do |host|
        opts[:host] = host
      end

      on("-i", "--interval [INTERVAL=#{opts[:interval]}]", "set a retrieving interval") do |interval|
        opts[:interval] = interval
      end

      on("-l", "--log LOG", "log file") do |log|
        opts[:log] = log
      end

      on("-d", "--debug", "Enable debug mode") do |debug|
        opts[:log]   = $stdout
        opts[:debug] = true
      end

      on("-f", "--foreground", "run foreground") do |foreground|
        opts[:log]        = $stdout
        opts[:foreground] = true
      end

      parse!(argv)
    end
  end

  self.cast opts
end