module VaderSentimentRuby::WordHelper
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)
Constants
- LETTERS_RANGE
- PUNCTUATIONS
Public Class Methods
strip_punctuation(token)
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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 ':)' @param [String] token @return [String]
Example
strip_punctuation("'test'") # => "test" strip_punctuation("'don't'") # => "don't" strip_punctuation(":)") # => ":)"
# File lib/vader_sentiment_ruby/word_helper.rb, line 34 def strip_punctuation(token) original_set = token.split('') array = clean_leading_punctuations(original_set) array = clean_trailing_punctuations(array) stripped_token = array.join return token if stripped_token.size <= 2 stripped_token end
word_upcase?(word)
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Checks that string contains at least one letter and all letters are in upcase @param [String] word @return [Boolean]
Example
word_upcase?(':D') # => true word_upcase?(':)') # => false
# File lib/vader_sentiment_ruby/word_helper.rb, line 19 def word_upcase?(word) word == word.upcase && word.count(LETTERS_RANGE).positive? end
Private Class Methods
clean_leading_punctuations(token_array)
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# File lib/vader_sentiment_ruby/word_helper.rb, line 48 def clean_leading_punctuations(token_array) token_array.drop_while { |letter| PUNCTUATIONS.include? letter } end
clean_trailing_punctuations(token_array)
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# File lib/vader_sentiment_ruby/word_helper.rb, line 52 def clean_trailing_punctuations(token_array) token_array .reverse .drop_while { |letter| PUNCTUATIONS.include? letter } .reverse end