copyselector.rb

# This is the guts of a Service that lets you select a method in Xcode (either a definition or a call),
# click "Copy Selector", and copy the selector for that method to the pasteboard. For example:
#
# “- (void)bar;” → “bar” on the pasteboard
#
# “- (void)doThing:(type *)thing withOptions:(type*)options” → “doThing:withOptions:” on the pasteboard
#
# “[foo barWithOptions:options]” → “barWithOptions:” on the pasteboard
#
# “[[foo barWithBaz:[baz barWithProperty:thing.backgroundColor]] doThing:thing withOptions:options];” →
# “doThing:withOptions:” on the pasteboard

ARGF.each do |f|
	selector = ""
	f.gsub!(";", "") # remove semicolon if it's there
	
	if f[0,1] == "["
		# method call
		nesting_level = f.count("]")
		if nesting_level > 1
			# get rid of everything before and including the second-last "]"
			[0..nesting_level-1].each do |i|
				next_closing_bracket_index = f.index("]")
				f = f[next_closing_bracket_index..-1]
			end
			puts f
		else
			# get rid of the object the method is being called on
			f = f.split()[1..-1].join(" ")
		end
		
		#sanitise input
		
		f.gsub!("[", "")
		f.gsub!("]", "")
		
		f.split.each do |component|
			if component.split(":").length > 1
				selector += component.split(":")[0] + ":"
			else
				selector += component.split(":")[0]
			end
		end
	else
		# method definition
		
		# sanitise input
		f.gsub!(/\s+\*/, "*")
		f.gsub!(/\(\w+\)/, "")
		f.gsub!("{", "")
		f.gsub!("-", "")
		f.gsub!("+", "")

		f.split.each do |component|
			if component.split(":").length > 1
				selector += component.split(":")[0] + ":"
			else
				selector += component.split(":")[0]
			end
		end
	end
	#puts selector
	IO.popen("pbcopy", "r+").puts selector
end