Class: NgWord::Rule

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ng_word, exclude_words: []) ⇒ Rule

Returns a new instance of Rule.


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# File 'lib/ng_word/rule.rb', line 5

def initialize(ng_word, exclude_words: [])
  @ng_word = ng_word
  @exclude_words = exclude_words

  @downcased_ng_word = @ng_word.downcase
  @exclude_word_rules = Array(@exclude_words).map { |w| ExcludeWordRule.new(@downcased_ng_word, w) }

  freeze
end

Instance Attribute Details

#exclude_word_rules ⇒ Object (readonly)

Returns the value of attribute exclude_word_rules.


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# File 'lib/ng_word/rule.rb', line 3

def exclude_word_rules
  @exclude_word_rules
end

#ng_word ⇒ Object (readonly)

Returns the value of attribute ng_word.


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# File 'lib/ng_word/rule.rb', line 3

def ng_word
  @ng_word
end

Instance Method Details

#masked_text(text, replace_text: '***', for_monitoring: false) ⇒ Object 


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# File 'lib/ng_word/rule.rb', line 26

def masked_text(text, replace_text: '***', for_monitoring: false)
  downcased_text = text.downcase
  index = downcased_text.index(downcased_ng_word)
  return text if index.nil?

  index_list = split(downcased_text)

  words = []
  current_index = 0
  index_list.each do |index|
    words << text.slice(current_index, index - current_index)
    current_index = index + downcased_ng_word.length
  end
  words << text.slice(current_index, text.length - current_index)

  replaced_text = for_monitoring ? "#{replace_text}(#{ng_word})" : replace_text
  words.join(replaced_text)
end

#match?(downcased_text) ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/ng_word/rule.rb', line 45

def match?(downcased_text)
  result = verify(downcased_text)
  !result.valid?
end

#verify(downcased_text, offset: 0) ⇒ Object 


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# File 'lib/ng_word/rule.rb', line 15

def verify(downcased_text, offset: 0)
  index = downcased_text.index(downcased_ng_word, offset)
  return VerificationResult.new(true) if index.nil?

  exclude_word_rules.each do |rule|
    return verify(downcased_text, offset: index + 1) if rule.match?(downcased_text, index)
  end

  VerificationResult.new(false, ng_word: ng_word)
end