Module: CronDescriber

Defined in:
lib/cron_describer.rb,
lib/cron_describer/version.rb

Defined Under Namespace

Classes: Error

Constant Summary collapse

VERSION = 
"0.1.0"

Class Method Summary collapse

Class Method Details

.parse(cron_schedule) ⇒ Object 



8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
 
# File 'lib/cron_describer.rb', line 8

def self.parse(cron_schedule)
  days_of_week = {0 => "Sunday", 1 => "Monday", 2 => "Tuesday", 3 => "Wednesday", 4 => "Thursday", 5 => "Friday", 6 => "Saturday"}

  minute, hour, day_of_month, month, day_of_week = cron_schedule.split(" ")

  time_string = ""
  day_string = ""
  month_string = ""

  # For time string
  if minute == "0" && hour != "*"
    time_string = "At #{hour.to_i}:00 AM"
  elsif minute != "*" && hour != "*"
    hour_val = hour.to_i
    time_string = "At #{hour_val > 12 ? hour_val - 12 : hour_val}:#{minute.to_i.to_s.rjust(2, '0')} #{hour_val >= 12 ? 'PM' : 'AM'}"
  elsif minute != "*" && hour == "*"
    time_string = "At #{minute.to_i} minutes past the hour"
  end

  # For day string
  if day_of_month != "*"
    day_string = ", on day #{day_of_month} of the month"
  elsif day_of_week =~ /\d#(\d)/
    week_num = $1
    day_num = day_of_week[0].to_i
    day_string = ", on the #{week_num.ordinalize} #{days_of_week[day_num]} of the month"
  elsif day_of_week != "*"
    day_num = day_of_week.to_i
    day_string = ", only on #{days_of_week[day_num]}"
  end

  # For month string
  if month != "*" && month != "*/1"
    month_string = ", every #{month.gsub('*/','')} months"
  end

  return "#{time_string}#{day_string}#{month_string}"
end