Class: SrtShifter::Subtitle

Inherits:
Object
  • Object
show all
Defined in:
lib/srtshifter/subtitle.rb

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Subtitle

Returns a new instance of Subtitle.



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# File 'lib/srtshifter/subtitle.rb', line 6

def initialize(options)
	@opts = options
end

Instance Method Details

#convert_time(time) ⇒ Object 



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# File 'lib/srtshifter/subtitle.rb', line 41

def convert_time(time)
  time_diff = time_in_seconds(@opts[:time])
  if @opts[:operation] == "SUB" and time_diff > 0
    time_diff *= -1
  end

  current_time = Time.parse(time)
  new_time = Time.at(current_time.to_f + time_diff)
  "#{new_time.strftime('%H:%M:%S')},#{sprintf("%.3d",new_time.usec/1000)}"
end

#shift ⇒ Object 



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# File 'lib/srtshifter/subtitle.rb', line 10

def shift

	start_time = Time.now

	output_file = File.open(@opts[:output], 'w')

	lines = IO.readlines(@opts[:input])

	lines.each do |line|

		time_line = line.force_encoding("iso-8859-1")
		time_match = time_line.scan(/(\d{2}:\d{2}:\d{2},\d{3}) --\> (\d{2}:\d{2}:\d{2},\d{3})/)
      time_match.flatten!
		
		if time_match[0].nil? || time_match[1].nil?
			output_file.write(line)
		else
			new_start_time = convert_time(time_match[0])
    				new_end_time = convert_time(time_match[1])
    				new_line = "#{new_start_time} --> #{new_end_time}\n"

    				output_file.write(new_line)
		end
	end

	end_time = Time.now

	puts "\nFile created with success!"
	puts "Elapsed time: #{end_time-start_time} seconds."
end