Class: Dispatches

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

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Dispatches

Returns a new instance of Dispatches.



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# File 'lib/itrp.rb', line 46

def initialize()

	# load handlers
	reload

	# root proc 
	@cmd_roots = { :any => ITRP::Cmd_root.new(Appenv) }
	@cmd_roots[:any].set_time_window 


	# build command tree 
	(ITRP::constants-[:Cmd, :Cmd_root]).each do |k|
		kls = ITRP::const_get(k)
		ins = kls.new(Appenv)
		@cmd_roots[ins.enabled_in_state] ||= ITRP::Cmd_root.new(Appenv) 
		@cmd_roots[ins.enabled_in_state].place_node(ins)
	end
	
	# hook up autocompletion 
	Readline.completion_proc = proc do |s| 
		buff = Readline.line_buffer()

		[Appenv.context, :any].uniq.collect do |ctx|
			node  = @cmd_roots[ctx].find_node(buff.split(' '))
			(node or @cmd_roots[:any]).completions(s) 
		end.flatten  
	end

	# history load 
       if File.exist? HISTFILE
           File.readlines(HISTFILE).each do |l|
               Readline::HISTORY.push(l.chop)
           end
       end

end

Instance Method Details

#help ⇒ Object 



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# File 'lib/itrp.rb', line 113

def help
	@cmd_roots.each do |k,v|
		print "Context :#{k}\n"
		v.treeprint 
	end 
end

#invoke(cmdline) ⇒ Object 



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# File 'lib/itrp.rb', line 82

def invoke(cmdline)
	# system commands
	case cmdline.scan(/(\w+)/).flatten.first 
		when 'reload' ; reload 
		when 'quit'   ; quit 
		when 'help'   ; help
		when 'clear'  ; system("clear") 
		else;
	end 

	# dispatch to correct plugin w/ context
	node=nil
	[Appenv.context, :any].uniq.collect do |ctx|
		node  = @cmd_roots[ctx].find_node(cmdline.strip.split(' '))
		if not node.is_root?
			node.enter(cmdline.strip) 
			return
		end
	end
	node.notfound(cmdline) if node.is_root?
end

#quit ⇒ Object 



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# File 'lib/itrp.rb', line 120

def quit
	savehistory
	exit 0
end

#reload ⇒ Object 



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# File 'lib/itrp.rb', line 104

def reload
	print("Loading command handlers ")
	Dir.glob("handlers/*rb") do |f|
		load(f)
		print('.')
	end
	print("done\n\n")
end

#savehistory ⇒ Object 



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# File 'lib/itrp.rb', line 125

def savehistory
       File.open( HISTFILE, "w") do |h|
           Readline::HISTORY.to_a.uniq.each do |l|
               h.write(l + "\n" ) 
           end
       end
end