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.



21
22
23
24
25
26
 
# File 'lib/sycutil/console_timer.rb', line 21

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



42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
 
# File 'lib/sycutil/console_timer.rb', line 42

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 = format('%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



29
30
31
32
33
34
35
36
37
 
# File 'lib/sycutil/console_timer.rb', line 29

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