Module: Iso9660::Util

Defined in:
lib/fs/iso9660/util.rb

Constant Summary collapse

ISO_DATE = 
BinaryStruct.new([
  'a4', 'year',   # Absolute year.
  'a2', 'month',
  'a2', 'day',
  'a2', 'hour',
  'a2', 'min',
  'a2', 'sec',
  'a2', 'hun',
  'c',  'offset'  # 15-min intervals (iow 4 per time zone).
])
ISO_DATE_SHORT = 
BinaryStruct.new([
  'C',  'year',   # Since 1900.
  'C',  'month',
  'C',  'day',
  'C',  'hour',
  'C',  'min',
  'C',  'sec',
  'c',  'offset'  # 15-min intervals.
])

Class Method Summary collapse

Class Method Details

.GetShortTimezone(isoShort) ⇒ Object 



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# File 'lib/fs/iso9660/util.rb', line 53

def self.GetShortTimezone(isoShort)
  isoShort[7] / 4
end

.GetTimezone(isodate) ⇒ Object 



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# File 'lib/fs/iso9660/util.rb', line 39

def self.GetTimezone(isodate)
  isodate[16, 1].unpack('c')[0] / 4
end

.IsoShortToRubyDate(isoShort) ⇒ Object 



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# File 'lib/fs/iso9660/util.rb', line 43

def self.IsoShortToRubyDate(isoShort)
  return Time.at(0).gmtime if isoShort == "\0" * 7
  begin
    tv = OpenStruct.new(ISO_DATE_SHORT.decode(isoShort))
  rescue
    return Time.at(0).gmtime
  end
  Time.gm(tv.sec, tv.min, tv.hour, tv.day, tv.month, tv.year + 1900, nil, nil, nil, tv.offset / 4)
end

.IsoToRubyDate(isodate) ⇒ Object 



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# File 'lib/fs/iso9660/util.rb', line 30

def self.IsoToRubyDate(isodate)
  begin
    tv = OpenStruct.new(ISO_DATE.decode(isodate))
  rescue
    return Time.at(0).gmtime
  end
  Time.gm(tv.sec, tv.min, tv.hour, tv.day, tv.month, tv.year, nil, nil, nil, tv.offset / 4)
end