Class: Overlook::BitReader
- Inherits:
-
Object
- Object
- Overlook::BitReader
- Defined in:
- lib/overlook/bit_reader.rb
Instance Method Summary collapse
- #bit ⇒ Object
- #byte ⇒ Object
- #bytes(n) ⇒ Object
- #eof? ⇒ Boolean
-
#initialize(_buffer) ⇒ BitReader
constructor
A new instance of BitReader.
- #int32 ⇒ Object
- #short ⇒ Object
- #skip(n) ⇒ Object
- #var_int(max_len) ⇒ Object
- #var_int32 ⇒ Object
Constructor Details
Instance Method Details
#bit ⇒ Object
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# File 'lib/overlook/bit_reader.rb', line 11 def bit bits(1) end |
#byte ⇒ Object
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# File 'lib/overlook/bit_reader.rb', line 15 def byte bits(8) end |
#bytes(n) ⇒ Object
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# File 'lib/overlook/bit_reader.rb', line 7 def bytes(n) @buffer.bytes(n) end |
#eof? ⇒ Boolean
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# File 'lib/overlook/bit_reader.rb', line 35 def eof? @buffer.eof? end |
#int32 ⇒ Object
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# File 'lib/overlook/bit_reader.rb', line 28 def int32 ret = byte ret |= byte << 8 ret |= byte << 16 ret |= byte << 24 end |
#short ⇒ Object
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# File 'lib/overlook/bit_reader.rb', line 23 def short ret = byte ret |= byte << 8 end |
#skip(n) ⇒ Object
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# File 'lib/overlook/bit_reader.rb', line 19 def skip(n) @buffer.skip(n) end |
#var_int(max_len) ⇒ Object
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# File 'lib/overlook/bit_reader.rb', line 43 def var_int(max_len) _byte = 0 count = 0 result = 0 loop do return result if count + 1 == max_len _byte = self.byte result |= (_byte & 0x7F) << (7 * count) count = count + 1 break if _byte & 0x80 == 0 end result end |
#var_int32 ⇒ Object
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# File 'lib/overlook/bit_reader.rb', line 39 def var_int32 var_int(4) end |