Hello perl-monks,
I am trying to:
a) download a xml file
b) do some basic processing on this xml file and
c) finally save it.

I was wondering what is the best option to do this:

option 1.

  system("wget -O - 'http://host/getFeed.xml' > /tmp/myfeed.xml"); //d
+ownload + save as tmp file..
  open FH, "</tmp/myfeed.xml";
  while(<FH>) {
     //manipulation steps here..
  }
  close FH;
[download]

Option 2:
Is there a way to process the file, as its being downloaded? (instead of having to save it temporarily, and then reading it to process it) ?

I dont know how to implement option#2. Do you have any suggestions?
The xml feed can be quite huge, (~150Gb max.) As, the feed is huge, I am hoping there's a better option compared to option #1, as writing this file first to some tmp file and then saving it again would mean more disk-activity.

thanks!

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