lib/whatever-dl/websites/ehow.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 'whatever-dl/website'
  20
  21 class Ehow < Website
  22
  23   VALID_EHOW_URL_REGEX = /^(http:\/\/)?(www.)?ehow\.com\/[a-z0-9\-_\.]+$/i
  24
  25   def self.owns_url?(url)
  26     return url =~ VALID_EHOW_URL_REGEX
  27   end
  28
  29
  30   def get_video_url()
  31     page_data = get_page_data(@url)
  32     filepath = parse_video_url(page_data)
  33     puts "FILEPATH: #{filepath}"
  34     return filepath
  35   end
  36
  37
  38   protected;
  39
  40   def parse_video_url(page_data)
  41     # There's more than one JSON 'id' parameter floating around; we
  42     # only want the one that points to the video URL.
  43     #
  44     # In fact, there's more than one 'id' parameter pointing to a
  45     # video URL, but it looks like the highest-quality clips are
  46     # listed first so the first match should give us that.
  47     #
  48     video_url_regex = /id:[[:space:]]?'(http:\/\/[^']+)'/i
  49     matches = video_url_regex.match(page_data)
  50
  51     if matches.nil? or (matches.length < 2)
  52       raise StandardError.new("Couldn't parse the 'id' JSON parameter.")
  53     else
  54       return matches[1]
  55     end
  56   end
  57
  58 end