Class: Mumble::PacketDataStream
- Inherits:
-
Object
- Object
- Mumble::PacketDataStream
- Defined in:
- lib/mumble-ruby/packet_data_stream.rb
Instance Method Summary collapse
- #append(val) ⇒ Object
- #append_block(data) ⇒ Object
- #get_block(len) ⇒ Object
- #get_int ⇒ Object
- #get_next ⇒ Object
-
#initialize(data = nil) ⇒ PacketDataStream
constructor
A new instance of PacketDataStream.
- #left ⇒ Object
- #put_int(int) ⇒ Object
- #rewind ⇒ Object
- #size ⇒ Object
- #skip(len = 1) ⇒ Object
- #valid ⇒ Object
Constructor Details
#initialize(data = nil) ⇒ PacketDataStream
Returns a new instance of PacketDataStream.
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# File 'lib/mumble-ruby/packet_data_stream.rb', line 3 def initialize(data=nil) @data = data || 0.chr * 1024 @data = @data.split '' @pos = 0 @ok = true @capacity = @data.size end |
Instance Method Details
#append(val) ⇒ Object
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# File 'lib/mumble-ruby/packet_data_stream.rb', line 23 def append(val) if @pos < @capacity @data[@pos] = val.chr skip else @ok = false end end |
#append_block(data) ⇒ Object
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# File 'lib/mumble-ruby/packet_data_stream.rb', line 32 def append_block(data) len = data.size if len < left @data[@pos, len] = data.split('') skip len else @ok = false end end |
#get_block(len) ⇒ Object
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# File 'lib/mumble-ruby/packet_data_stream.rb', line 42 def get_block(len) if len < left ret = @data[@pos, len] skip len else @ok = false ret = [] end ret end |
#get_int ⇒ Object
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# File 'lib/mumble-ruby/packet_data_stream.rb', line 123 def get_int v = get_next int = 0 if (v & 0x80) == 0x00 int = v & 0x7F elsif (v & 0xC0) == 0x80 int = (v & 0x3F) << 8 | get_next elsif (v & 0xF0) == 0xF0 x = v & 0xFC if x == 0xF0 int = get_next << 24 | get_next << 16 | get_next << 8 | get_next elsif x == 0xF4 int = get_next << 56 | get_next << 48 | get_next << 40 | get_next << 32 | get_next << 24 | get_next << 16 | get_next << 8 | get_next elsif x == 0xF8 int = get_int int = ~int elsif x == 0xFC int = v & 0x03 int = ~int else @ok = false int = 0 end elsif (v & 0xF0) == 0xE0 int = (v & 0x0F) << 24 | get_next << 16 | get_next << 8 | get_next elsif (v & 0xE0) == 0xC0 int = (v & 0x1F) << 16 | get_next << 8 | get_next end return int end |
#get_next ⇒ Object
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# File 'lib/mumble-ruby/packet_data_stream.rb', line 53 def get_next if @pos < @capacity ret = @data[@pos].ord skip else ret = 0 @ok = false end ret end |
#left ⇒ Object
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# File 'lib/mumble-ruby/packet_data_stream.rb', line 19 def left @capacity - @pos end |
#put_int(int) ⇒ Object
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# File 'lib/mumble-ruby/packet_data_stream.rb', line 72 def put_int(int) if !(int & 0x8000000000000000).zero? && (~int < 0x100000000) int = ~int puts int if int <= 0x3 # Shortcase for -1 to -4 append(0xFC | int) else append(0xF8) end end if int < 0x80 # Need top bit clear append(int) elsif int < 0x4000 # Need top two bits clear append((int >> 8) | 0x80) append(int & 0xFF) elsif int < 0x200000 # Need top three bits clear append((int >> 16) | 0xC0) append((int >> 8) & 0xFF) append(int & 0xFF) elsif int < 0x10000000 # Need top four bits clear append((int >> 24) | 0xE0) append((int >> 16) & 0xFF) append((int >> 8) & 0xFF) append(int & 0xFF) elsif int < 0x100000000 # It's a full 32-bit integer. append(0xF0) append((int >> 24) & 0xFF) append((int >> 16) & 0xFF) append((int >> 8) & 0xFF) append(int & 0xFF) else # It's a 64-bit value. append(0xF4) append((int >> 56) & 0xFF) append((int >> 48) & 0xFF) append((int >> 40) & 0xFF) append((int >> 32) & 0xFF) append((int >> 24) & 0xFF) append((int >> 16) & 0xFF) append((int >> 8) & 0xFF) append(int & 0xFF) end end |
#rewind ⇒ Object
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# File 'lib/mumble-ruby/packet_data_stream.rb', line 64 def rewind @pos = 0 end |
#size ⇒ Object
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# File 'lib/mumble-ruby/packet_data_stream.rb', line 15 def size @pos end |
#skip(len = 1) ⇒ Object
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# File 'lib/mumble-ruby/packet_data_stream.rb', line 68 def skip(len=1) len < left ? @pos += len : @ok = false end |
#valid ⇒ Object
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# File 'lib/mumble-ruby/packet_data_stream.rb', line 11 def valid @ok end |