Move all of the 'src' code under the more-standard 'lib'.

[dead/whatever-dl.git] / lib / whatever-dl / websites / howcast.rb

diff --git a/lib/whatever-dl/websites/howcast.rb b/lib/whatever-dl/websites/howcast.rb
new file mode 100644 (file)
index 0000000..90cbd61
--- /dev/null
+++ b/lib/whatever-dl/websites/howcast.rb
@@ -0,0 +1,65 @@
+#
+# Copyright Michael Orlitzky
+#
+# http://michael.orlitzky.com/
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# http://www.fsf.org/licensing/licenses/gpl.html
+#
+
+require 'src/website'
+
+class Howcast < Website
+
+  VALID_HOWCAST_URL_REGEX = /^(http:\/\/)?(www\.)?howcast\.com\/videos\/(\d+)-(.+)$/
+
+  def self.owns_url?(url)
+    return url =~ VALID_HOWCAST_URL_REGEX
+  end
+
+ 
+  def get_video_url()
+    video_id = parse_video_id()
+    xml_url = "http://www.howcast.com/videos/#{video_id}.xml"
+    xml_data = self.get_page_data(xml_url)
+    filepath = parse_file_path_from_xml(xml_data)
+    
+    return "http://www.howcast.com#{filepath}"
+  end
+
+  protected;
+
+  def parse_video_id()
+    # This regex just pulls out the video id
+    id_regex = /\/(\d+)-/
+    matches = id_regex.match(@url)
+
+    if matches.nil?
+      raise StandardError.new('The URL is a valid Howcast URL, but does not match on the digit portion of the regex. Since the digit portion is a subset of the "valid" regex, this should never occur.')
+    end
+    
+    return matches[1]
+  end
+
+
+  def parse_file_path_from_xml(data)
+    file_path_regex = /<filename>(.*?)<\/filename>/
+    matches = file_path_regex.match(data)
+
+    if matches.nil?
+      raise StandardError.new("Couldn't parse the <filename> tag from the XML file.")
+    end
+
+    return matches[1]
+  end
+
+end