Class: KiqTock::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/kiq_tock/parser.rb

Constant Summary collapse

DAY_OF_WEEK_SUBSTITUTIONS = 
{
  '0' => %w[sun sunday],
  '1' => %w[mon monday],
  '2' => %w[tue tues tuesday],
  '3' => %w[wed wednesday],
  '4' => %w[thu thur thursday],
  '5' => %w[fri friday],
  '6' => %w[sat saturday]
}.freeze
MONTH_OF_YEAR_SUBSTITUTIONS = 
{
  '0'  => %w[jan january],
  '1'  => %w[feb february],
  '2'  => %w[mar march],
  '3'  => %w[apr april],
  '4'  => %w[may],
  '5'  => %w[jun june],
  '6'  => %w[jul july],
  '7'  => %w[aug august],
  '8'  => %w[sep sept september],
  '9'  => %w[oct october],
  '10' => %w[nov november],
  '11' => %w[dec december]
}.freeze

Class Method Summary collapse

Class Method Details

.parse(field, cron_expression) ⇒ Object 



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# File 'lib/kiq_tock/parser.rb', line 32

def self.parse(field, cron_expression)
  expression = cron_expression.to_s.gsub(/\s+/, '')

  case field.to_sym
  when :days_of_week
    translate_days expression
  when :months_of_year
    translate_months expression
  else
    expression
  end.split(/,\s*/)
end

.translate(substitutions, cron_expression) ⇒ Object 



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# File 'lib/kiq_tock/parser.rb', line 45

def self.translate(substitutions, cron_expression)
  substitutions.each_pair.inject(cron_expression) do |result, (number, names)|
    names.sort_by(&:length).reverse.inject(result) do |string, name|
      string.gsub(name, number)
    end
  end
end

.translate_days(cron_expression) ⇒ Object

Substitute names for numbers, searching for longest matches first



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# File 'lib/kiq_tock/parser.rb', line 55

def self.translate_days(cron_expression)
  translate DAY_OF_WEEK_SUBSTITUTIONS, cron_expression
end

.translate_months(cron_expression) ⇒ Object

Substitute names for numbers, searching for longest matches first



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# File 'lib/kiq_tock/parser.rb', line 61

def self.translate_months(cron_expression)
  translate MONTH_OF_YEAR_SUBSTITUTIONS, cron_expression
end