Class: MarkovUuid::Chain

Inherits:
Hash
  • Object
show all
Defined in:
lib/markov_uuid/chain.rb

Constant Summary collapse

SEPARATOR = 
"#-#-"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(h = {}) ⇒ Chain

Returns a new instance of Chain.



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# File 'lib/markov_uuid/chain.rb', line 20

def initialize h={}
  replace h
end

Instance Attribute Details

#words ⇒ Object (readonly)

Returns the value of attribute words.



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# File 'lib/markov_uuid/chain.rb', line 4

def words
  @words
end

Class Method Details

.from_string(string) ⇒ Object 



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# File 'lib/markov_uuid/chain.rb', line 7

def from_string string
  from_word_list(strip_punctuation string)
end

.from_word_list(words) ⇒ Object 



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# File 'lib/markov_uuid/chain.rb', line 11

def from_word_list words
  new.tap { |i| i.add words }
end

.strip_punctuation(l) ⇒ Object 



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# File 'lib/markov_uuid/chain.rb', line 15

def strip_punctuation l
  l.gsub(/[[:punct:]]/," ").gsub('  ', ' ').split " "
end

Instance Method Details

#add(words) ⇒ Object 



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# File 'lib/markov_uuid/chain.rb', line 24

def add words
  key = SEPARATOR

  words.each do |word|
    (self[key] ||= []) << word

    key = new_key(key, word)
  end
end

#format(result, i = 32) ⇒ Object 



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# File 'lib/markov_uuid/chain.rb', line 56

def format result, i=32
  result.join("-")[0..i.to_i].
    gsub(/\A\w+-/ , "").
    gsub(/-$/     , "").
    gsub(/-\w+$/  , "")
end

#new_key(key, word) ⇒ Object 



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# File 'lib/markov_uuid/chain.rb', line 34

def new_key(key, word)
  return SEPARATOR if word == "\n"

  word or key
end

#uuid(length = 100) ⇒ Object

note these are not by any means guaranteed to be unique dependent on uuid length and corpus size maybe maintain uniqueness elsewhere by regenerating unless unique



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# File 'lib/markov_uuid/chain.rb', line 43

def uuid length = 100
  key = keys.sample
  word = ""

  result = length.times.map do
    word = self[key].sample rescue nil
    key = new_key key, word
    word
  end.compact

  format result
end