module TinyProgressBar

# File lib/tiny_progress_bar.rb, line 2
def self.print options = {} 
        return @options = nil if options == :reset or options[:reset]
        (@options ||= { 
                count: 0,
                size: 100, 
                filled: '*', 
                empty: ' ', 
                precision: 0, 
                message: "Complete!", 
                opener: "[", 
                closer: "]",
                last: nil,
                out: $stdout
        }).merge! options do |_, o, n| n.nil? ? o : n end
        @options[:before] = options[:before]
        @options[:after] = options[:after]
        count = (@options[:count] = @options[:count] ? @options[:count] + 1 : 1)
        size = @options[:size]
        filled = @options[:filled]
        empty = @options[:empty]
        opener = @options[:opener]
        closer = @options[:closer]
        precision = @options[:precision]
        max = @options[:max]
        ratio = count.to_f / max.to_f
        percentage = precision ? (ratio * 100.0).round(precision) : (ratio * 100.0)
        filled_size = (ratio * size).floor.to_i
        empty_size = size - filled_size
        @options[:out].print "\b" * (@options[:last] || 0) 
        str = "#{(@options[:before] || "")}#{opener}" + filled * filled_size + empty * empty_size + "#{closer} #{percentage}% (#{count}/#{max})#{(@options[:after] || "")}"
        @options[:out].print str
        @options[:last] = str.length
        if count == max 
                puts " #{@options[:message]}" 
                @options[:count] = 0
                @options[:last] = 0
        end
        @options
end