CODEWITHSUNDEEP
rubyprogress-barcommand-line-interface
Aaron Dufall
Aaron Dufall

Reputation: 1177

Ruby: CLI progress bar with open-uri

I'm trying to experiment with the open-uri and want to make a Command line interface progress bar.

I've going over the documentation for OpenURI::OpenRead where is has a progress bar code sample.

pbar = nil
open('latest.zip', 'wb') do |fo|
  fo.print open('http://wordpress.org/latest.zip',
    :content_length_proc => lambda { |t|
    if t && 0 < t
      pbar = ProgressBar.new("...", t)
      pbar.file_transfer_mode
    end
    },

    :progress_proc => lambda {|s|
      pbar.set s if pbar
    }).read
end

but I'm can keep getting the following error:

zip_dowloader.rb:11:in `block (2 levels) in <main>': uninitialized constant ProgressBar (NameError)

Upvotes: 0

Views: 1154

Answers (1)

Unixmonkey
Unixmonkey

Reputation: 18784

gem install progressbar

Then add:

require 'progressbar'

to the top of your script.

Or, in a bundler-enabled project, add:

gem 'progressbar'

to your Gemfile and run bundle install.

Upvotes: 3

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