From: ara.t.howard@...
Date: 2007-03-05T04:50:52+09:00
Subject: Re: How to download file from web site

On Mon, 5 Mar 2007, Joel VanderWerf wrote:

> Bil Kleb wrote:
>> ara.t.howard@noaa.gov wrote:
>>> 
>>> require 'open-uri'
>>> uri = 'http://rubyforge.org/frs/download.php/17670/RMagick-1.15.3.tar.gz'
>>> 
>>> open(uri) do |fin|
>>>   open(File.basename(uri), 'w') do |fout|
>>>     while(buf = fin.read(8192))
>>>       fout.write buf
>>>     end
>>>   end
>>> end
>> 
>> He asks naively...
>> 
>>  Why is this so complicated, e.g., the 8192 buffered write, etc.?
>
> It does seem too low-level, doesn't it? Especially in the same snippet with 
> open(uri), which abstracts so much.
>
> Didn't the rio library[1] have a way to abstract this operation?
>
> This is from the docs:
>
>> Copy a web-page to a file  rio('http://rubydoc.org/') > rio('afile')
>
> I suppose it's using the same buffering technique underneath that 
> abstraction.
>
> [1] http://rio.rubyforge.org/  (never used it myself)

reminds me of an RCR i've had in mind:

   io.relay another_io, bufsize

seems like a nice one huh?

-a
-- 
be kind whenever possible... it is always possible.
- the dalai lama