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Contents
module Picky
# encoding: utf-8
#
module Generators
module Similarity
# It's actually a combination of double metaphone
# and Levenshtein.
#
# It uses the double metaphone to get similar words
# and ranks them using the levenshtein.
#
class Phonetic < Strategy
attr_reader :amount
#
#
def initialize amount = 3
check_gem
raise "In Picky 2.0+, the Similarity::Phonetic has been renamed to Similarity::DoubleMetaphone. Please use that one. Thanks!" if self.class == Phonetic
@amount = amount
end
# Tries to require the text gem.
#
def check_gem # :nodoc:
require 'text'
rescue LoadError
warn_gem_missing 'text', 'a phonetic Similarity'
exit 1
end
# Sorts the index values in place.
#
def prioritize ary, code
ary.sort_by_levenshtein! code
ary.slice! amount, ary.size # Note: The ary.size is not perfectly correct.
end
end
end
end
end
Version data entries
17 entries across 17 versions & 1 rubygems