Class: Incline::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/incline/cli.rb,
lib/incline/cli/usage.rb,
lib/incline/cli/errors.rb,
lib/incline/cli/version.rb

Defined Under Namespace

Classes: CliError, Usage, UsageError, Version

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CLI

Returns a new instance of CLI.



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# File 'lib/incline/cli.rb', line 15

def initialize

end

Class Method Details

.valid_commands ⇒ Object 



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# File 'lib/incline/cli.rb', line 70

def self.valid_commands
  command_list.map do |cmd_info|
    [ cmd_info[:method], cmd_info[:klass], cmd_info[:new_params] ]
  end
end

Instance Method Details

#execute(*args) ⇒ Object 



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# File 'lib/incline/cli.rb', line 19

def execute(*args)
  begin
    if args.empty? || %w(usage help /? -? -help --help).include?(args.first)
      process_command(:usage)
    else
      process_command(*args)
    end
  rescue UsageError => err
    STDERR.puts err.message
    process_command(:usage)
  rescue CliError => err
    STDERR.puts ANSI.code(:red) { 'ERROR:' }
    STDERR.puts err.message
  rescue RuntimeError => err
    STDERR.puts ANSI.code(:red) { 'FATAL ERROR:' }
    STDERR.puts err.inspect
  end
end

#process_command(command, *args) ⇒ Object 



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# File 'lib/incline/cli.rb', line 38

def process_command(command, *args)
  command = command.to_sym
  cmd_info = self.class.command_list.find{|c| c[:method] == command}
  if cmd_info
    args = args.dup
    args = []
    cmd_info[:new_params].each do |(type,name)|
      if type == :rest
        args += args
        break
      elsif type == :req
        if args.empty?
          raise UsageError, "Missing required parameter '#{name}' for command '#{command}'."
        end
        args << args.delete_at(0)
      elsif type == :opt
        if args.empty?
          break
        else
          args << args.delete_at(0)
        end
      else
        raise UsageError, "Unknown parameter type '#{type}' for command '#{command}'."
      end
    end
    cmd_object = cmd_info[:klass].new(*args)
    cmd_object.send(:run)
  else
    raise UsageError, "Unknown command '#{command}'."
  end
end