Sha256: 5b51a4eb7e120cb3a29873653227765430546e09e31e6b519403b1d20f515a17
Contents?: true
Size: 739 Bytes
Versions: 66
Compression:
Stored size: 739 Bytes
Contents
module Ext3
class AllocBitmap
def initialize(data)
raise "Ext3::AllocBitmap.initialize: Nil data" if data.nil?
@data = data
end
def isAllocated?(number)
getStatus(number)
end
def [](number)
getStatus(number)
end
def dump
@data.hex_dump
end
private
def getStatus(number)
byte, mask = index(number)
@data[byte] & mask == mask
end
def index(number)
byte, bit = number.divmod(8)
if byte > @data.size - 1
msg = "AllocBitmap#index: "
msg += "byte index #{byte} is out of range for data[0:#{@data.size - 1}]"
raise msg
end
mask = 128 >> bit
return byte, mask
end
end # class
end # module
Version data entries
66 entries across 66 versions & 1 rubygems