src/websites/vimeo.rb

   1 #
   2 # Copyright Michael Orlitzky
   3 #
   4 # http://michael.orlitzky.com/
   5 #
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14 # GNU General Public License for more details.
  15 #
  16 # http://www.fsf.org/licensing/licenses/gpl.html
  17 #
  18
  19 require 'src/website'
  20
  21
  22 class Vimeo < Website
  23
  24   VALID_VIMEO_URL_REGEX = /^(http:\/\/)?(www\.)?vimeo\.com\/(moogaloop\.swf\?clip_id=)?(\d+)/
  25
  26   def self.owns_url?(url)
  27     return url =~ VALID_VIMEO_URL_REGEX
  28   end
  29
  30
  31   def get_video_url()
  32     # First, figure out the video id from the URL.
  33     # Then, use the video id to construct the video details URL.
  34     # Get the video details page, and parse the resulting XML for
  35     # the junk we need to construct the video URL. Note that the file
  36     # URL given in the XML is *not* valid.
  37     video_id = self.parse_video_id()
  38     details_url = "http://www.vimeo.com/moogaloop/load/clip:#{video_id}/local"
  39     details_data = get_page_data(details_url)
  40
  41
  42     request_signature = parse_request_signature(details_data)
  43     request_signature_expires = parse_request_signature_expires(details_data)
  44     quality = parse_quality(details_data)
  45
  46     # Being slightly explicit about what we're doing here...
  47     video_url = "http://www.vimeo.com/moogaloop/play/clip:#{video_id}/#{request_signature}/#{request_signature_expires}/?q=#{quality}"
  48
  49     return video_url
  50   end
  51
  52
  53   def get_video_filename()
  54     # The default behavior is no good here, use the video
  55     # id with an extension tacked onto it.
  56     return (self.parse_video_id() + '.flv')
  57   end
  58
  59
  60   protected;
  61
  62   def parse_video_id()
  63     video_id = nil
  64
  65     # First, try to get the video id from the end of the URL.
  66     video_id_regex = /\/(\d+)$/
  67     matches = video_id_regex.match(@url)
  68
  69     if matches.nil?
  70       # If that didn't work, the URL must be of the clip_id= form.
  71       video_id_regex = /clip_id\=(\d+)/
  72       matches = video_id_regex.match(@url)
  73       video_id = matches[1] if not (matches.nil? || matches.length < 1)
  74     else
  75       video_id = matches[1] if not (matches.nil? || matches.length < 1)
  76     end
  77
  78     return video_id
  79   end
  80
  81
  82   def parse_request_signature(page_data)
  83     # It's XML.
  84     rs_regex = /<request_signature>(.*?)<\/request_signature>/
  85     matches = rs_regex.match(page_data)
  86     request_signature = matches[1] if not (matches.nil? || matches.length < 1)
  87
  88     return request_signature
  89   end
  90
  91
  92   def parse_request_signature_expires(page_data)
  93     rse_regex = /<request_signature_expires>(.*?)<\/request_signature_expires>/
  94     matches = rse_regex.match(page_data)
  95     request_signature_expires = matches[1] if not (matches.nil? || matches.length < 1)
  96
  97     return request_signature_expires
  98   end
  99
 100
 101   def parse_quality(page_data)
 102     quality_regex = /<isHD>([01])<\isHD>/
 103     matches = quality_regex.match(page_data)
 104     is_hd = matches[1] if not (matches.nil? || matches.length < 1)
 105
 106     if is_hd == '1' then
 107        # High-definition
 108       return "hd"
 109     else
 110       # Standard-definition
 111       return "sd"
 112     end
 113   end
 114
 115
 116 end