Module: VaderSentimentRuby::WordHelper

Defined in:
lib/vader_sentiment_ruby/word_helper.rb

Overview

Helper module for word manipulations to simulate pythons methods behavior word_upcase?(word) is similar to Python’s word.isupper() strip_punctuation(word) is similar to Python’s word.strip(string.punctuation)

Constant Summary collapse

PUNCTUATIONS = 
'!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~'

Class Method Summary collapse

Class Method Details

.strip_punctuation(token) ⇒ String

Removes all trailing and leading punctuation If the resulting string has two or fewer characters, then it was likely an emoticon, so return original string (ie ‘:)’ stripped would be ”, so just return ‘:)’ Example

strip_punctuation("'test'") # => "test"
strip_punctuation("'don't'") # => "don't"
strip_punctuation(":)") # => ":)"

Parameters:

  • token (String)

Returns:

  • (String) 


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# File 'lib/vader_sentiment_ruby/word_helper.rb', line 33

def strip_punctuation(token)
  token_without_punctuation = replace_punctuations(token)

  original_set = token.split('')
  updated_set = token_without_punctuation.split('')

  pair_array = prepare_match_array(original_set, updated_set)
  pair_array = clean_leading_punctuations(pair_array)
  pair_array = clean_trailing_punctuations(pair_array)

  stripped = pair_array.map { |item| item[:old_ch] }.join

  return token if stripped.size <= 2

  stripped
end

.word_upcase?(word) ⇒ Boolean

Checks that string contains at least one letter and all letters are in upcase Example

word_upcase?(':D') # => true
word_upcase?(':)') # => false

Parameters:

  • word (String)

Returns:

  • (Boolean) 


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# File 'lib/vader_sentiment_ruby/word_helper.rb', line 18

def word_upcase?(word)
  word == word.upcase && word.count('A-Za-z').positive?
end