Module: Rbcli::Parser

Defined in:
lib/rbcli/engine/parser.rb

Class Method Summary collapse

Class Method Details

.parse ⇒ Object 



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# File 'lib/rbcli/engine/parser.rb', line 29

def self.parse
	# We show deprecation warnings before anything else, encouraging the developer to update their code.
	Rbcli::DeprecationWarning.display_warnings

	@cliopts = Trollop::options do
		data = Rbcli.configuration(:me)
		version "#{data[:scriptname]} version: #{data[:version]}"
		banner <<-EOS
#{data[:description]}
For more information on individual commands, run `#{data[:scriptname]} <command> -h`.

Usage:
     #{data[:scriptname]} [options] command [parameters]

Commands:
#{Rbcli::Command.descriptions 6, 21}

[options]:
		EOS
		data[:options].each do |name, opts|
			opts[:default] = nil unless opts.key? :default
			opts[:required] = false unless opts.key? :required
			opts[:permitted] = nil unless opts.key? :permitted
			opt name.to_sym, opts[:description], type: opts[:type], default: opts[:default], required: opts[:required], permitted: opts[:permitted], short: opts[:short]
		end
		if data[:remote_execution]
			opt :remote_exec, 'Remote user@host:port to execute command on', type: :string, default: nil
			opt :identity, 'Identity for remote execution', type: :string, default: nil
		end
		opt :json_output, 'Output result in machine-friendly JSON format', short: :none, type: :boolean, default: false if data[:allow_json]
		opt :config_file, 'Specify a config file manually', short: :none, type: :string, default: data[:config_userfile] unless data[:config_userfile].nil?
		opt :generate_config, 'Generate a new config file', short: :none unless data[:config_userfile].nil? #defaults to false
		stop_on Rbcli::Command.commands.keys
	end

	@cmd = [ARGV.shift] # get the subcommand
	if @cliopts[:generate_config]
		Rbcli::Config::generate_userconf @cliopts[:config_file]
		puts "User config generated at #{@cliopts[:config_file]} using default values."
	elsif @cmd[0].nil?
		default_action = Rbcli.configuration(:me, :default_action) || Rbcli.configuration(:hooks, :default_action)
		if default_action.nil?
			Trollop::educate
		else
			default_action.call @cliopts
		end
	elsif Rbcli::Command.commands.key? @cmd[0]
		@cmd << Rbcli::Command.commands[@cmd[0]].class.parseopts

		if (@cliopts[:remote_exec_given] and not @cliopts[:identity_given]) or (not @cliopts[:remote_exec_given] and @cliopts[:identity_given])
			Trollop::die 'Must use `--remote-exec` and `--identity` together.'
		end

		Rbcli.configuration(:me, :pre_hook).call @cliopts unless Rbcli.configuration(:me, :pre_hook).nil?
		Rbcli.configuration(:hooks, :pre_hook).call @cliopts unless Rbcli.configuration(:hooks, :pre_hook).nil?
		Rbcli::Command.runcmd(@cmd.shift, @cmd[0], @cliopts)
		Rbcli.configuration(:me, :post_hook).call @cliopts unless Rbcli.configuration(:me, :post_hook).nil?
		Rbcli.configuration(:hooks, :post_hook).call @cliopts unless Rbcli.configuration(:hooks, :post_hook).nil?
	else
		Trollop::die "Unknown subcommand #{@cmd[0].inspect}"
	end

end