Class: Overlook::BitBuffer
- Inherits:
-
Object
- Object
- Overlook::BitBuffer
- Defined in:
- lib/overlook/bit_buffer.rb
Instance Method Summary collapse
- #bits(numbits) ⇒ Object
- #bytes(num) ⇒ Object
- #eof? ⇒ Boolean
-
#initialize(io) ⇒ BitBuffer
constructor
A new instance of BitBuffer.
- #skip(n) ⇒ Object
Constructor Details
#initialize(io) ⇒ BitBuffer
Returns a new instance of BitBuffer.
3 4 5 6 7 |
# File 'lib/overlook/bit_buffer.rb', line 3 def initialize(io) @io = io @buffer = 0 @available = 0 end |
Instance Method Details
#bits(numbits) ⇒ Object
13 14 15 16 17 18 19 20 21 22 23 24 |
# File 'lib/overlook/bit_buffer.rb', line 13 def bits(numbits) if numbits == 8 && @available == 0 byte = refresh_buffer @available = 0 return byte end numbits.times.reduce(0) do |result, index| refresh_buffer unless available_bits? result |= getbit << index end end |
#bytes(num) ⇒ Object
9 10 11 |
# File 'lib/overlook/bit_buffer.rb', line 9 def bytes(num) @io.read(num) end |
#eof? ⇒ Boolean
26 27 28 |
# File 'lib/overlook/bit_buffer.rb', line 26 def eof? @io.eof? end |
#skip(n) ⇒ Object
30 31 32 |
# File 'lib/overlook/bit_buffer.rb', line 30 def skip(n) @io.seek(n, IO::SEEK_CUR) end |