Small script for fixing srt files with blank lines

fix-srt.rb

# This small script uses the 'srt' gem to parse the srt file
# It solves problems with certain subtitle files with empty lines that make Flex crash
# You can use it with files, folders with files or even folders with subfolders with files (God bless Recursivity)
# USAGE: ruby fix-srt.rb file/to/fix.srt
# USAGE: ruby fix-srt.rb folder/with/files/to/fix
# USAGE: ruby fix-srt.rb folders/with/subfolders/to/fix
require 'rubygems'
require 'srt'

class StrFixer

  def self.fix file_or_directory_path
    if File.directory? file_or_directory_path
      fix_directory file_or_directory_path
    else
      fix_file File.new(file_or_directory_path)
    end
  end

  def self.fix_directory directory
    Dir.glob("#{directory}/**/*.srt").each do |file_path|
      fix_file File.new(file_path)
    end
  end

  def self.fix_file file

    puts "Fixing #{file.path}"

    str_file = SRT::File.parse(file)
    fixed = SRT::File.new

    right_lines = 0

    str_file.lines.each_with_index do |line, i|
      puts line.sequence if line.text.join("").empty?
      unless line.text.join("").empty?
        right_lines += 1
        new_line = line.clone
        new_line.sequence = right_lines
        fixed.lines << new_line
      end
    end

    file.close

    File.open(file.path, "w") { |f| f.write fixed.to_s }

  end

end

StrFixer.fix ARGV.first