Class: Zip::DOSTime

Inherits:
Time
  • Object
show all
Includes:
JRubyCMP
Defined in:
lib/zip/dos_time.rb

Overview

:nodoc:all

Defined Under Namespace

Modules: JRubyCMP

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from JRubyCMP

#<, #<=, #==, #>, #>=

Instance Attribute Details

#absolute_time=(value) ⇒ Object (writeonly)

Register DX, the Date: Bits 0-4 day (1-31) bits 5-8 month (1-12) bits 9-15 year (four digit year minus 1980)



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# File 'lib/zip/dos_time.rb', line 19

def absolute_time=(value)
  @absolute_time = value
end

Class Method Details

.from_time(time) ⇒ Object

Create a DOSTime instance from a vanilla Time instance.



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# File 'lib/zip/dos_time.rb', line 52

def self.from_time(time)
  local(time.year, time.month, time.day, time.hour, time.min, time.sec)
end

.parse_binary_dos_format(bin_dos_date, bin_dos_time) ⇒ Object 



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# File 'lib/zip/dos_time.rb', line 56

def self.parse_binary_dos_format(bin_dos_date, bin_dos_time)
  second = 2 * (0b11111 & bin_dos_time)
  minute = (0b11111100000 & bin_dos_time) >> 5
  hour   = (0b1111100000000000 & bin_dos_time) >> 11
  day    = (0b11111 & bin_dos_date)
  month  = (0b111100000 & bin_dos_date) >> 5
  year   = ((0b1111111000000000 & bin_dos_date) >> 9) + 1980

  time = local(year, month, day, hour, minute, second)
  time.absolute_time = false
  time
end

Instance Method Details

#<=>(other) ⇒ Object

Dos time is only stored with two seconds accuracy.



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# File 'lib/zip/dos_time.rb', line 45

def <=>(other)
  return unless other.kind_of?(Time)

  (to_i / 2) <=> (other.to_i / 2)
end

#absolute_time? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/zip/dos_time.rb', line 21

def absolute_time?
  # If absolute time is not set, we can assume it is an absolute time
  # because times do have timezone information by default.
  @absolute_time.nil? ? true : @absolute_time
end

#dos_equals(other) ⇒ Object 



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# File 'lib/zip/dos_time.rb', line 39

def dos_equals(other)
  warn 'Zip::DOSTime#dos_equals is deprecated. Use `==` instead.'
  self == other
end

#to_binary_dos_date ⇒ Object 



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# File 'lib/zip/dos_time.rb', line 33

def to_binary_dos_date
  day +
    (month << 5) +
    ((year - 1980) << 9)
end

#to_binary_dos_time ⇒ Object 



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# File 'lib/zip/dos_time.rb', line 27

def to_binary_dos_time
  (sec / 2) +
    (min << 5) +
    (hour << 11)
end