Class: BentleyMcIlroy::BlockFingerprintTable

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

Overview

Look-up table with a #find method which finds an appropriate block and then modifies the match to extend it to more characters.

Instance Method Summary collapse

Constructor Details

#initialize(block_sequenced_text) ⇒ BlockFingerprintTable

Returns a new instance of BlockFingerprintTable.



39
40
41
42
43
44
45
46
 
# File 'lib/bentley_mcilroy.rb', line 39

def initialize(block_sequenced_text)
  @blocked_text = block_sequenced_text
  @hash = {}

  @blocked_text.blocks.each do |block|
    (@hash[block.hash] ||= []) << block
  end
end

Instance Method Details

#find_for_compress(fingerprint, block_size, target, position) ⇒ Object 



48
49
50
51
 
# File 'lib/bentley_mcilroy.rb', line 48

def find_for_compress(fingerprint, block_size, target, position)
  source = @blocked_text.text
  find(fingerprint, block_size, source, target, position)
end

#find_for_diff(fingerprint, block_size, target) ⇒ Object 



53
54
55
56
 
# File 'lib/bentley_mcilroy.rb', line 53

def find_for_diff(fingerprint, block_size, target)
  source = @blocked_text.text
  find(fingerprint, block_size, source, target)
end