Class: Fission::CLI

Inherits:
Object show all
Defined in:
lib/fission.old/cli.rb

Class Method Summary collapse

Class Method Details

.commands ⇒ Object 



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# File 'lib/fission.old/cli.rb', line 48

def self.commands
  cmds = Dir.entries(File.join(File.dirname(__FILE__), 'command')).select do |file|
    !File.directory? file
  end

  cmds.map { |cmd| File.basename(cmd, '.rb').gsub '_', ' ' }
end

.execute(args = ARGV) ⇒ Object 



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# File 'lib/fission.old/cli.rb', line 3

def self.execute(args=ARGV)
  optparse = OptionParser.new do |opts|
    opts.banner = "\nUsage: fission [options] COMMAND [arguments]"

    opts.on_head('-v', '--version', 'Output the version of fission') do
      Fission.ui.output Fission::VERSION
      exit(0)
    end

    opts.on_head('-h', '--help', 'Displays this message') do
      show_all_help(optparse)
      exit(0)
    end

    opts.define_tail do
      commands_banner
    end

  end

  begin
    optparse.order! args
  rescue OptionParser::InvalidOption => e
    Fission.ui.output e
    show_all_help(optparse)
    exit(1)
  end

  if commands.include?(args.first)
    @cmd = Fission::Command.const_get(args.first.capitalize).new args.drop 1
  elsif is_snapshot_command?(args)
    klass = args.take(2).map {|c| c.capitalize}.join('')
    @cmd = Fission::Command.const_get(klass).new args.drop 2
  else
    show_all_help(optparse)
    exit(1)
  end

  begin
    @cmd.execute
  rescue Error => e
     puts "Error: #{e}"
  end
end