Module: File::Visitor::TimeUtils

Included in:
Filter::Mtime
Defined in:
lib/file/visitor/time_utils.rb

Constant Summary collapse

UNIT_SEC = 
{
  :sec   => 1,
  :min   => 60,
  :hour  => 60 * 60,
  :day   => 60 * 60 * 24,
  :month => 60 * 60 * 24 * 31,
  :year  => 60 * 60 * 24 * 365
}
COMPARATOR = 
[
  :equals_to,
  :==,
  :is_greater_than,
  :is_younger_than,
  :>,
  :is_greater_than=,
  :is_younger_than=,
  :>=,
  :is_less_than,
  :is_older_than,
  :<,
  :is_less_than=,
  :is_older_than=,
  :<=,
]

Instance Method Summary collapse

Instance Method Details

#compare_time(time1, comparator, time2) ⇒ Object 



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# File 'lib/file/visitor/time_utils.rb', line 61

def compare_time(time1, comparator, time2)
  time1 = to_time(time1)
  time2 = to_time(time2)

  unless COMPARATOR.include?(comparator)
    raise ArgumentError,
      "invalid comparator: #{comparator.to_s}"
  end

  case comparator
  when :equals_to, :==
    return time1 == time2
  when :is_greater_than, :is_younger_than, :>
    return time1 > time2
  when :is_greater_than=, :is_younger_than=, :>=
    return time1 >= time2
  when :is_less_than, :is_older_than, :<
    return time1 < time2
  when :is_less_than=, :is_older_than=, :<=
    return time1 <= time2
  else
    raise RuntimeError,
      "invalid comparator: #{comparator.to_s}"
  end
end

#to_time(time) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/file/visitor/time_utils.rb', line 87

def to_time(time)
  return time if time.is_a?(Time)
  return Time.parse(time) if time.is_a?(String)
  raise ArgumentError, "invalid time: #{time.inspect}"
end

#unitexp2sec(count, unit_name) ⇒ Object 



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# File 'lib/file/visitor/time_utils.rb', line 50

def unitexp2sec(count, unit_name)
  if (!count.is_a?(Fixnum) || count < 0)
    raise ArgumentError,
      "time count must be positive fixnum: #{count}"
  end
  if !UNIT_SEC[unit_name]
    raise ArgumentError, "unknown time unit: #{unit_name}"
  end
  count * UNIT_SEC[unit_name]
end