Class: Pack::Compressor

Inherits:
Object
  • Object
show all
Defined in:
lib/pack/compressor.rb

Constant Summary collapse

OBJECT_SIZE = 
50..0x20000000
MAX_DEPTH = 
50
WINDOW_SIZE = 
8

Instance Method Summary collapse

Constructor Details

#initialize(database, progress) ⇒ Compressor

Returns a new instance of Compressor.



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# File 'lib/pack/compressor.rb', line 11

def initialize(database, progress)
  @database = database
  @window   = Window.new(WINDOW_SIZE)
  @progress = progress
  @objects  = []
end

Instance Method Details

#add(entry) ⇒ Object 



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# File 'lib/pack/compressor.rb', line 18

def add(entry)
  return unless OBJECT_SIZE.include?(entry.size)
  @objects.push(entry)
end

#build_deltas ⇒ Object 



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# File 'lib/pack/compressor.rb', line 23

def build_deltas
  @progress&.start("Compressing objects", @objects.size)

  @objects.sort! { |a, b| b.sort_key <=> a.sort_key }

  @objects.each do |entry|
    build_delta(entry)
    @progress&.tick
  end
  @progress&.stop
end