ProgressPrinter

Logs the progress of an operation, with estimated completion time.

Installation

When using Bundler, add this to your project's Gemfile:

gem 'progress_printer'

Otherwise, install it with the gem command:

$ gem install progress_printer

Already in a console?

ProgressPrinter is in a single file with no dependencies, so you're able to copy/paste the entire file into an irb session, and then immediately use ProgressPrinter.new (see below). The raw source to copy is available here:

https://raw.githubusercontent.com/justincampbell/progress_printer/master/lib/progress_printer.rb

Usage

Basic Usage

A ProgressPrinter must be created, started, and finished. Use #increment within your operation to increment the progress.

require 'progress_printer'

printer = ProgressPrinter.new(name: "Counting", total: 250)
printer.start
250.times { sleep 0.05; printer.increment }
printer.finish

Output:

Counting:   0/250   0% calculating...
Counting: 100/250  40% ~8s
Counting: 200/250  80% ~2s
Counting: 250/250 100% 14s total

You can also achieve the same results by using .wrap or #wrap:

ProgressPrinter.wrap(name: "Counting", total: 250) do |progress|
  250.times { sleep 0.05; progress.increment }
end

printer = ProgressPrinter.new(name: "Counting", total: 250)
printer.wrap do |progress|
  250.times { sleep 0.05; progress.increment }
end

Arguments

• total - The total number of iterations expected. If this is omitted, estimated completion time will not be shown.
• name - A string to display next to each printed line. This helps identify the current operation, or the specific progress printer if using multiple.
• every (Default: 100) - How many iterations should pass in between printing a line.
• out (Default: $stdout) - An object responding to #puts for printing the progress to.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/justincampbell/progress_printer. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.