easy ls command (Practice)

ls.rb

#!/usr/bin/ruby -Ku

class Pdir
	def initialize(dirnameArray,optionArray)
		@AllPrintDirPATH = dirnameArray
		@Alloptions = optionArray
		@diro = Array.new
		dirnameArray.each do |x|
			if File.exists?(x) == true && File.directory?(x) == true then
				@diro << Dir.open(x)
			else
				print "Arguments Error\n"
				exit 1
			end
		end
	end

	def printhide? # a オプションがあればtrue
		@Alloptions.each do |oc|
			if oc == 'a' then
				return true
			end
		end
		return false
	end

	def printl?
		@Alloptions.each do |oc|
			if oc == "l" then 
				return true
			end
		end
		return false
	end

	def l_printDir
		i = 0
		@diro.each do |printd|
			if @diro.size != 1 then
				if i != 0 then
					print "\n"
				end
				print @AllPrintDirPATH[i] + ":\n"
			end
			i += 1
			a = printd.entries

			a.each do |filen|
				if File.file?(filen) == true then
					print "-"
				else
					print "d"
				end
				sbuf = File.stat(filen)
				smod = sbuf.mode.to_s(8)
				print smod[(smod.size - 3)..smod.size - 1] + " " + sbuf.uid.to_s + " " + sbuf.gid.to_s + " " + sbuf.size.to_s + " " + sbuf.atime.to_s + "   "
				if filen =~ /\./ && self.printhide? == false
					next
				else
					puts filen
				end
			end
			
		end

		return true
	end #def end

	def defaultPrintDir() #lsの規則にしたがって指定ディレクトリのファイルを表示する
		if self.printl? == true then
			return self.l_printDir
		end
		i = 0
		@diro.each do |printd|
			if @diro.size != 1 then
				if i != 0 then
					print "\n"
				end
				print @AllPrintDirPATH[i] + ":\n"
			end
			i += 1
			a = printd.entries
			a.each do |pr|
				if pr =~ /^\./  && self.printhide? == false
					next
				else
					puts pr
				end
			end
		end
		return true
	end #defaultPrintDir end


end #class end

goptions = Array.new
options = Array.new
targetdirs = Array.new
ARGV.each do |arg|
	if arg =~ /^-.+/ then
		goptions << arg
	else
		targetdirs << arg
	end
end


if targetdirs.size == 0 then
	targetdirs << '.'
end

goptions.each do |option_str|
	1.upto(option_str.size - 1) do |oo|
		options << option_str[oo]
	end
end

pdirobj = Pdir.new(targetdirs,options)
pdirobj.defaultPrintDir