+#
+# 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
+#
+
+class WgetDownloader < Downloader
+
+ def download(url, outfile, headers = {}, continue = false)
+ if (continue == false and File.exists?(outfile))
+ raise IOError.new("Output file already exists. Please remove #{outfile}, and try again. If this is a partially-downloaded file, you can use the --continue flag to pick up where it left off.")
+ end
+
+ options = ''
+
+ if continue == true
+ options += '--continue '
+ end
+
+ headers.each_key do |key|
+ options += "--header '#{key}: #{headers[key]}' "
+ end
+
+ # This one's easy.
+ cmd = "wget #{options} -O '#{outfile}' '#{url}'"
+ puts "\nExecuting external command: #{cmd}\n\n"
+ Kernel.exec(cmd)
+ end
+
+end