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tools / podcast.rb
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2f16e387 » archiloque 2009-06-15 Podcast generator 1 # Generate a podcast rss file from all the mp3 contained in a directory
2 # The mp3 are named "YYYY-MM-DD??????" and we get their title from their id3 tags
3 # Params
4 # - directory of mp3 files, default '.'
5 # - root url for the mp3s, default 'http:/localhost/'
6 # - the podcast title, default 'podcast'
7 # - image url
8 # - a target directory where the mp3 files will be copied with a short name if param is here, usefull if you have strange names that aren't url-firendly
9 # Julien Kirch 2009, available under MIT license
10
11 require 'rubygems'
12 require 'id3'
13 require 'date'
14 require 'parsedate'
15 require 'builder'
16 require 'rss/2.0'
17
18 # An item in the feed
19 class RssItem
20 include Comparable
21 attr_accessor :title, :file_name, :duration, :pub_date, :size
22
23 def initialize
24 title = ''
25 end
26
27 def to_s
28 "\"#{file_name}\", \"#{title}\", #{duration}, #{pub_date}"
29 end
30
31 def <=> o
32 pub_date <=> o.pub_date
33 end
34 end
35
36 mp3_directory = ARGV[0] || '.'
37 root_url = ARGV[1] || 'http://localhost/'
38 title = ARGV[2] || 'podcast'
39 image_url = ARGV[3]
40 target_directory = ARGV[4]
41
42 mp3s = Array.new
43 Dir.chdir(mp3_directory)
44 Dir.glob('*.mp3') do |file_name|
45 item = RssItem.new
46 file = ID3::AudioFile.new file_name
47 if file.tagID3v1
48 item.title = file.tagID3v1['TITLE']
49 end
50 if item.title.nil? || item.title.empty?
51 item.title = File.basename(file_name, '.*')
52 end
53 item.duration = file.audioLength
54 date = ParseDate.parsedate file_name[0,10]
55 item.pub_date = Time.gm(date[0], date[1], date[2], 0, 0, 0)
56 item.size = File.size(file_name)
57 if target_directory
58 target_name = sprintf("%03d", mp3s.size + 1) + File.extname(file_name)
59 File.copy(file_name, target_directory + target_name)
60 item.file_name = target_name
61 else
62 item.file_name = file_name
63 end
64 mp3s << item
65 end
66
67 mp3s.sort
68
69 result = ''
70 xml = Builder::XmlMarkup.new(:target=> result, :indent => 2)
71 xml.instruct! 'xml', :version => '1.0', :encoding => 'UTF-8'
72 xml.rss(:version=>"2.0", 'xmlns:itunes' =>'http://www.itunes.com/dtds/podcast-1.0.dtd') {
73 xml.channel {
74 xml.title title
75 xml.description title
76 if image_url && (!image_url.empty?)
77 xml.image {
78 xml.url image_url
79 xml.title title
80 xml.link root_url
81 }
82 end
83 mp3s.each do |mp3|
84 xml.item {
85 xml.title mp3.title
86 xml.link(root_url + mp3.file_name)
87 xml.enclosure(:url => (root_url + mp3.file_name), :length => mp3.size, :type => 'audio/mpeg')
88 xml.guid(root_url + mp3.file_name)
89 xml.pubDate mp3.pub_date.rfc2822
90 }
91 end
92 }
93 }
94 print result
95