derived_data.rb

DERIVED_DATA_PATH = "~/Library/Developer/Xcode/DerivedData/"

def projects 
	`ls -al #{DERIVED_DATA_PATH}`.split("\n")[3..-1].map { |p|
		ls_components = p.split(" ")
		project_name = ls_components.last 

		if project_name != "ModuleCache"				
			project_name = project_name.split("-")[0..-2].join("-")
		else
			nil
		end
	}.select { |p|
		p != nil
	}.uniq
end

def remove_project_data project
	did_remove_anything = false
	`ls -al #{DERIVED_DATA_PATH}`.split("\n")[3..-1].each do |p|
		ls_components = p.split(" ")
		project_name = ls_components.last 

		if project_name[project] != nil
			print "removing #{project_name}.."
			`rm -rf #{DERIVED_DATA_PATH}#{project_name}`
			did_remove_anything = true
			print ".done\n"
		end
	end
	unless did_remove_anything
		puts "no derived data was asociated with #{project}"
	end
end

def remove_all_data
	projects.each do |project|
		remove_project_data project
	end
	remove_project_data "ModuleCache"
end

if ARGV.count > 0 
	ARGV.each do |project|
		remove_project_data project
	end
else
	remove_all_data
end