require 'rake'

require 'erb'



class QuickTemplate

	attr_reader :args, :file

	

	def initialize(file)

		raise "The template file to process must be given" if file.nil?



		@file = file

	end

	

	def exec(args = {})

		template = prepare_template File.read(@file)

		result = exec_erb template, args

		

		resultFile = @file.ext('')

		File.open(resultFile, 'w') do

			|f| f.write(result)

		end

		

		puts "Created file #{resultFile}"

	end

	

	def prepare_template(template)

		tag_regex = /(@\w[\w\.]+\w@)/

		

		hits = template.scan(tag_regex)

		tags = hits.map do |item|

			item[0].chomp('@').reverse.chomp('@').reverse.strip

		end

		

		tags.map! do |a|

			a.to_sym

		end

		tags.uniq!



		tags.inject(template) do |text, tag|

			text.gsub /@#{tag.to_s}@/, "<%= #{tag.to_s} %>"

		end

	end

		

	def exec_erb(template, args)

		b = binding

		erb = ERB.new(template, 0, "%")

		erb.result(b)

	end

end