Class: SRTParse

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

Instance Method Summary collapse

Instance Method Details

#duration(line) ⇒ Object 



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# File 'lib/mutasrt.rb', line 12

def duration(line)
  timestamp = line.split("-->")
  time_from = timestamp.first.gsub(/,/,".").split(":").last.to_f.round()
  time_to = timestamp.last.gsub(/,/,".").split(":").last.to_f.round()
  duration = time_to - time_from + (time_to < time_from ? 60 : 0)
  return duration
end

#find_avarages(results) ⇒ Object 



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# File 'lib/mutasrt.rb', line 2

def find_avarages(results)
  #find avarage symbols per line
  results["average_symbols_per_line"] = (results["number_of_symbols"].to_f/results["number_of_lines"]).round(2)
  #find avarage symbols per sentence
  results["average_symbols_per_sentence"] = (results["number_of_symbols"].to_f/results["number_of_sentences"]).round(2)
  #find avarage duration
  results["average_duration"] = (results["duration"]/results["number_of_subtitles"]).round(2)
  return results
end

#max_symbols_per_line(line, max_symbols) ⇒ Object 



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# File 'lib/mutasrt.rb', line 20

def max_symbols_per_line(line, max_symbols)
  current_line_symbols = line.scan(/[[:punct:]]/).count
  if current_line_symbols > max_symbols then
    return current_line_symbols
  else
    return max_symbols
  end
end

#parse_file(path_to_file) ⇒ Object 



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# File 'lib/mutasrt.rb', line 29

def parse_file(path_to_file)
  #define Hash and vars
  results = Hash.new(0)
  lines_after_blank = 0
  
  #reading file line by line
  File.open(path_to_file, "r") do |infile|
    infile.each_line do |line|
      #if line is blank null the num after blank
      if line =~ /^[\s]*$\n/ then
        lines_after_blank = 0
        next
      end #if
      
      case lines_after_blank
      when 0 then #when line is the number of subtitle
        results["number_of_subtitles"] = line.to_i
      when 1 then #when line is the time from-to 
        results["duration"] += duration(line)
      else #when line is text
        results["number_of_words"] += line.gsub(/[[:punct:]]/, '').split.length
        results["number_of_symbols"] += line.scan(/[[:punct:]]/).count
        results["number_of_lines"] += 1
        results["max_symbols_per_line"] = max_symbols_per_line( line, results["max_symbols_per_line"])
        results["number_of_sentences"] += line.scan(/[^\.!?]+[\.!?]/).count
      end  #end of case
      lines_after_blank += 1
    end #infile
  end #fopen
  #finished reading file line by line
  return find_avarages(results)
end