Module: MPLight::Unpacker

Defined in:

lib/mplight.rb

Instance Attribute Summary

• #input ⇒ Object readonly

  Returns the value of attribute input.

Instance Method Summary

• #do_input(input) ⇒ Object
• #eof? ⇒ Boolean
• #get ⇒ Object
• #init_input(input) ⇒ Object

Instance Attribute Details

#input ⇒ Object (readonly)

Returns the value of attribute input.

# File 'lib/mplight.rb', line 175

def input
  @input
end

Instance Method Details

#do_input(input) ⇒ Object

# File 'lib/mplight.rb', line 183

def do_input input
  oi = @input
  init_input input
  yield
ensure
  @input = oi
end

#eof? ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/mplight.rb', line 191

def eof?
  @input.eof?
end

#get ⇒ Object

# File 'lib/mplight.rb', line 195

def get
  fmt = (read 1).unpack1 "C"
  case fmt >> 7
  when 0b0 then fmt
  else
    case fmt >> 5
    when 0b111 then fmt - 256
    when 0b101 then get_str fmt&0b11111
    else
      case fmt >> 4
      when 0b1000 then get_hsh fmt&0b1111
      when 0b1001 then get_ary fmt&0b1111
      else
        case fmt
        when 0xc0 then nil
        when 0xc1 then raise ArgumentError, "Illegal format: #{fmt}"
        when 0xc2 then false
        when 0xc3 then true
        when 0xc4 then read    get_len1
        when 0xc5 then read    get_len2
        when 0xc6 then read    get_len4
        when 0xc7 then get_ext get_len1
        when 0xc8 then get_ext get_len2
        when 0xc9 then get_ext get_len4
        when 0xca then (read 4).unpack1 "g"
        when 0xcb then (read 8).unpack1 "G"
        when 0xcc then (read 1).unpack1 "C"
        when 0xcd then (read 2).unpack1 "S>"
        when 0xce then (read 4).unpack1 "L>"
        when 0xcf then (read 8).unpack1 "Q>"
        when 0xd0 then (read 1).unpack1 "c"
        when 0xd1 then (read 2).unpack1 "s>"
        when 0xd2 then (read 4).unpack1 "l>"
        when 0xd3 then (read 8).unpack1 "q>"
        when 0xd4 then get_ext  1
        when 0xd5 then get_ext  2
        when 0xd6 then get_ext  4
        when 0xd7 then get_ext  8
        when 0xd8 then get_ext 16
        when 0xd9 then get_str get_len1
        when 0xda then get_str get_len2
        when 0xdb then get_str get_len4
        when 0xdc then get_ary get_len2
        when 0xdd then get_ary get_len4
        when 0xde then get_hsh get_len2
        when 0xdf then get_hsh get_len4
        end
      end
    end
  end
end

#init_input(input) ⇒ Object

# File 'lib/mplight.rb', line 177

def init_input input
  @input = input
  @input.binmode
  self
end