Create podcast from directory

podcast.rb

require 'rss/maker'
require 'optparse'
require 'uri'

options={}

opts = OptionParser.new do |opts| 
	opts.on("-d", "--directory DIRECTORY", "Director of files") do |directory|
		options[:directory] = directory
	end
	
	opts.on("-b", "--base BASE", "Base for links") do |base|
		options[:base] = base
	end
	
	opts.on("-t", "--title TITLE", "Title of podcast") do |title|
    options[:title] = title
  end
  
  opts.on("-l", "--link LINK", "Link of podcast") do |link|
    options[:link] = link
  end
  
  opts.on("-i", "--image IMAGE", "Image") do |image|
  	options[:image] = image
  end
  
  opts.on("-e", "--desc DESCRIPTION", "Description of podcast") do |desc|
  	options[:desc] = desc
  end
  
  opts.on("-o", "--output OUTPUT", "Output file") do |output|
  	options[:output] = output
  end
  
  opts.on("-a", "--author [AUTHOR]", "Author of podcast items") do |author|
  	options[:author] = author
  end
  
  opts.on_tail("-h", "--help", "Show this message") do
    puts opts
    exit
  end
end

opts.parse!

version = "2.0"

content = RSS::Maker.make(version) do |m|
	m.channel.title = options[:title]
	m.channel.link = options[:link]
	m.channel.description = options[:desc]
	m.channel.language = "en-us"
	m.channel.itunes_image = options[:image]
	m.items.do_sort = true
	
	Dir.glob(options[:directory] + '/*.m4b').each do |audio|
		file = File.new(audio)
		i = m.items.new_item
		i.link = options[:base] + "/" + URI.escape(File.basename(file.path), Regexp.new("[^#{URI::PATTERN::UNRESERVED}]"))
		i.title = File.basename(file.path).gsub(File.extname(file.path),"")
		i.author = options[:author]
		i.pubDate = File.mtime(file)
		i.guid.content = i.link
		i.enclosure.url = i.link
		i.enclosure.length = file.size
		i.enclosure.type = 'audio/mpeg'
  end 
end

File.open(options[:output],"w") do |f|
	f.write(content)
end