Class: MigemoDictCache

Inherits:
Object
  • Object
show all
Defined in:
lib/migemo-dict.rb

Instance Method Summary collapse

Constructor Details

#initialize(filename) ⇒ MigemoDictCache

Returns a new instance of MigemoDictCache.



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# File 'lib/migemo-dict.rb', line 97

def initialize (filename)
  @dict  = File.new(filename)
  @index = File.new(filename + ".idx").read.unpack "N*"
end

Instance Method Details

#lookup(pattern) ⇒ Object 



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# File 'lib/migemo-dict.rb', line 112

def lookup (pattern)
  raise if pattern == nil
  pattern = pattern.downcase
  idx = @index.bsearch_first do |_idx|
    key, data = decompose(_idx)
    key <=> pattern
  end
  if idx
    key, data = decompose(@index[idx])
    return data
  else
    nil
  end
end