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Contents
module Zip
class DOSTime < Time #:nodoc:all
#MS-DOS File Date and Time format as used in Interrupt 21H Function 57H:
# Register CX, the Time:
# Bits 0-4 2 second increments (0-29)
# Bits 5-10 minutes (0-59)
# bits 11-15 hours (0-24)
# 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)
def to_binary_dos_time
(sec/2) +
(min << 5) +
(hour << 11)
end
def to_binary_dos_date
(day) +
(month << 5) +
((year - 1980) << 9)
end
# Dos time is only stored with two seconds accuracy
def dos_equals(other)
to_i/2 == other.to_i/2
end
def self.parse_binary_dos_format(binaryDosDate, binaryDosTime)
second = 2 * (0b11111 & binaryDosTime)
minute = (0b11111100000 & binaryDosTime) >> 5
hour = (0b1111100000000000 & binaryDosTime) >> 11
day = (0b11111 & binaryDosDate)
month = (0b111100000 & binaryDosDate) >> 5
year = ((0b1111111000000000 & binaryDosDate) >> 9) + 1980
begin
self.local(year, month, day, hour, minute, second)
end
end
end
end
# Copyright (C) 2002, 2003 Thomas Sondergaard
# rubyzip is free software; you can redistribute it and/or
# modify it under the terms of the ruby license.
Version data entries
82 entries across 79 versions & 21 rubygems