Class: Hawknee::Cli

Inherits:
Object
  • Object
show all
Defined in:
lib/hawknee/cli.rb

Overview

You know.. Command Line Interface.. Got it? :)

Defined Under Namespace

Modules: Command

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Cli

Initialize new Cli, and.. here we go!

some enlightening:

@command        - ARGV.first
@options        - simple opts handler



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# File 'lib/hawknee/cli.rb', line 30

def initialize(*args)
	
	# Handles options
	@options = {}
	
	# Set up the command and subcommand
	@command, @subcommand = parse_command
	
	begin
		opts = OptionParser.new do |opts|
			opts.banner = "Usage: hawknee COMMAND [OPTIONS]"
			
			opts.separator " "
			
			opts.separator "Installing Hawknee:"
			opts.separator "    rails new app_name                 # Make new Rails application"
			opts.separator "    cd app_name                        # Switch to the app's directory"
			opts.separator "    gedit Gemfile                      # Add: gem 'hawknee', '#{Hawknee::Version::STRING}'"
			opts.separator "    rails generate hawknee:install     # Copies needed files"
			opts.separator "    rails server                       # Runs the server"
			opts.separator "    go to http://localhost:3000/forum"
			opts.separator " "
			opts.separator "    Have fun!"
			
			opts.separator " "
			
			opts.separator "Common options:"
			opts.on('-v', '--version', 'Show version') do
				puts "Hawknee " + Hawknee::Version::STRING
				exit
			end
			
			opts.on('-h', '--help', 'Display this message') do
				puts opts
				exit
			end
		end.parse!
	rescue OptionParser::InvalidOption => e
		raise BadOption
	end
	
	# Here, in Hawknee, commands are simply classes, (kept in files in 'commands' directory) that inherits from Hawknee::Cli::Command.
	# To see it in action, dig a bit in lib/commands/new.rb file
	# 
	begin
		# We make sure the command (class) exists.
		run if command_exists?
	# When user typed some class (command) that doesn't exists.
	rescue BadCommand => e
		puts e.message
	# When typed ^C
	rescue Interrupt
		puts "\n[" + "interrupted".bold.colorize(:red) + "]"
	end
	
end

Instance Method Details

#parse_command ⇒ Object

run



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# File 'lib/hawknee/cli.rb', line 95

def parse_command
	case ARGV.length
		when 1
			return ARGV.first.to_s, 'init'
		when 2
			if ARGV[1] != nil
				return ARGV.first.to_s, ARGV[1].to_s
			end
	end
end

#run ⇒ Object

initialize



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# File 'lib/hawknee/cli.rb', line 87

def run
	begin
		eval "Hawknee::Cli::Command::#{@command.capitalize}.new.#{@subcommand}"
	rescue NameError, NoMethodError
		raise BadCommand
	end
end