Class: ConsoleTimer

Inherits:
Object
  • Object
show all
Defined in:
lib/sycutil/console_timer.rb

Overview

ConsoleTimer prints a task and the lead time at the upper right corner of the schreen. Invokation example:

  • Create a semaphore like id.track

  • Console time in a new ruby process

    semaphore = File.expand_path("~/.syc/syctask/#{id}.track"
FileUtils.touch semaphore
system "ruby lib/sycutil/console_timer.rb 60 10 semaphore"

This will start the ConsoleTimer with a lead time of 1 minute for task 10. To stop the timer the semaphore has to be deleted

FileUtils.rm semaphore

Instance Method Summary collapse

Constructor Details

#initialize(time, id, semaphore) ⇒ ConsoleTimer

Create a new ConsoleTimer with the time to count down, the task’s ID and a semaphore. The semaphore is a file named id.track where id is equal to the provided id. The semaphore is checked for existence. If the semaphore is deleted than ConsoleTimer is stopped.



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# File 'lib/sycutil/console_timer.rb', line 22

def initialize(time, id, semaphore)
  @time = time.to_i
  @id = id
  @start = Time.now
  @semaphore = semaphore
end

Instance Method Details

#output ⇒ Object

Prints the id and the lead time of the currently tracked task. As long as the provided time is greater than 0 the time is printed in green, otherwise red



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# File 'lib/sycutil/console_timer.rb', line 43

def output
  color = :green
  difference = @time - (Time.now - @start).round
  if difference < 0
    difference = difference.abs
    color = :red
  end
  seconds = difference % 60
  minutes = difference / 60 % 60
  hours   = difference / 60 / 60 % 60 
  count_down = sprintf("%d: %02d:%02d:%02d", @id, hours, minutes, seconds)
  size = count_down.size
  count_down = count_down.color(color)
  command = "tput sc;"+
            "tput cup 0 $(($(tput cols) - #{size}));"+
            "echo #{count_down};tput rc"
  system command
end

#start ⇒ Object

Starts the timer. The timer is run as long the semaphore is available



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# File 'lib/sycutil/console_timer.rb', line 30

def start
  track = true
  while track
    sleep 1
    output
    track = File.exists? @semaphore
  end
  exit 0
end