Ruby read remote file to stream

Question

I need to save a remote file a cloud storage server,so I must read this file to a file stream,I found this article : Open an IO stream from a local file or url the answer is :

require 'open-uri'
file_contents = open('local-file.txt') { |f| f.read }
web_contents  = open('http://www.stackoverflow.com') {|f| f.read }

But the web_contents is not right.Then I compare this action to a custom local file upload,which format is ASCII-8BIT,the format is not same.so How can I get the correct stream from remote file .

score 5 · Answer 1 · answered Aug 16 '14 at 20:08

5

Seems all right to me:

require 'open-uri'
web_contents  = open('http://www.stackoverflow.com') {|f| f.read }

out_file = File.expand_path("~/Desktop/out.html")

File.open(out_file, "w") do |f|
  f.puts web_contents
end

answered Aug 16 '14 at 20:08

tompave

11,952
7
37
63

What about performance? Is that the best way to do that? eg: If my file is 500MB for example – lucianosousa Feb 28 '18 at 15:06
If you don't want to load it up in memory, then you can read it in chunks (lines?). – tompave Feb 28 '18 at 15:25
sorry man, I didn't use it yet. Do you have some example? Or can improve your answer here with this? Thanks – lucianosousa Feb 28 '18 at 15:45

Ruby read remote file to stream

1 Answers1