Class: ExternalDownload

Inherits:
Object
  • Object
show all
Defined in:
lib/ektoplayer/download/externaldownload.rb

Constant Summary collapse

CMD = 
method :get_curl_cmd

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(url, filename) ⇒ ExternalDownload

Returns a new instance of ExternalDownload.



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# File 'lib/ektoplayer/download/externaldownload.rb', line 9

def initialize(url, filename)
   @events   = Events.new(:completed, :failed)
   @url      = URI.parse(url)
   @filename = filename
   @progress = 0
   @error    = nil
   @tries    = 3
end

Instance Attribute Details

#error ⇒ Object (readonly)

Returns the value of attribute error.



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# File 'lib/ektoplayer/download/externaldownload.rb', line 7

def error
  @error
end

#events ⇒ Object (readonly)

Returns the value of attribute events.



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# File 'lib/ektoplayer/download/externaldownload.rb', line 7

def events
  @events
end

#filename ⇒ Object (readonly)

Returns the value of attribute filename.



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# File 'lib/ektoplayer/download/externaldownload.rb', line 7

def filename
  @filename
end

#progress ⇒ Object (readonly)

Returns the value of attribute progress.



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# File 'lib/ektoplayer/download/externaldownload.rb', line 7

def progress
  @progress
end

#url ⇒ Object (readonly)

Returns the value of attribute url.



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# File 'lib/ektoplayer/download/externaldownload.rb', line 7

def url
  @url
end

Class Method Details

.get_curl_cmd(url, file) ⇒ Object 



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# File 'lib/ektoplayer/download/externaldownload.rb', line 22

def self.get_curl_cmd(url, file)
   %w(curl -# -o) + [file, url]
end

.get_wget_cmd(url, file) ⇒ Object 



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# File 'lib/ektoplayer/download/externaldownload.rb', line 18

def self.get_wget_cmd(url, file)
   %w(wget -nv --show-progress --progress=dot:binary -O) + [file, url]
end

Instance Method Details

#start! ⇒ Object 



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# File 'lib/ektoplayer/download/externaldownload.rb', line 26

def start!
   Thread.new do
      args = CMD.(@url.to_s, @filename)
      dl_in, dl_out, dl_err, @dl_proc = Open3.popen3(*args)

      begin
         while (line = dl_err.readpartial(1024))
            @last_line = line

            if (progress = line.scan(/(\d+(\.\d+)?%)/)[0][0].delete(?%).to_f rescue nil)
               @progress = progress
            end
         end
      rescue
         nil
      end

      begin
         @dl_proc.join
         raise if @dl_proc.value.exitstatus > 0
         @progress = 100.0
         @events.trigger(:completed)
      rescue
         @events.trigger(:failed, (@error = @last_line))
      end
   end

   sleep 0.1 while @dl_proc.nil?
   sleep 0.2
   self
end