From: Edwin Fine <efine145-nospam01@...>
Date: 2006-12-24T00:22:56+09:00
Subject: Re: Question: Downloading files with open(-uri)?

William James wrote:
> Mariano Kamp wrote:
>>    I tested it with an URL that returns plain html and that worked
>> http://downloads.scribemedia.net/rails2006/06_railsCorePanel_full.m4v
>>        print "."
>> Mariano
> There's nothing wrong with your program; I tested it by
> downloading a picture.  If you have a dial-up connection, maybe
> the transfer is progressing very slowly.

Actually, I think the site is slow or overloaded. The movies are 250MB - 
500MB in size, and the download speed I am getting is around 52 
KBytes/second (and I have a broadband connection). This code works 
better at showing progress:

require 'open-uri'

urls = %w{
http://ibm.com
http://downloads.scribemedia.net/rails2006/03_martin_fowler_full.m4v
http://downloads.scribemedia.net/rails2006/02_dave_thomas_full.m4v
http://downloads.scribemedia.net/rails2006/01_dh_hansson.m4v
http://downloads.scribemedia.net/rails2006/04_paul_graham_full.m4v
http://downloads.scribemedia.net/rails2006/06_railsCorePanel_full.m4v
http://downloads.scribemedia.net/rails2006/07_why_lucky_stiff.m4v
}

BUFFER_SIZE = 8 * 1_024

urls.each do |url|
  puts "downloading #{url}"
  out_file = url.split(/\//).last
  puts "Writing to #{out_file}"

  open(url, "r",
       :content_length_proc => lambda {|content_length| puts "Content 
length: #{content_length} bytes" },
       :progress_proc => lambda { |size| printf("Read %010d bytes\r", 
size.to_i) }) do |input|
    open(out_file, "wb") do |output|
      while (buffer = input.read(BUFFER_SIZE))
        output.write(buffer)
      end
    end
  end
  puts "\ndone."
end
puts "All downloads done."

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