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30990006a9
This reduces chances of errors where consumers of strings mutate inputs and reduces memory usage of the app. Test suite passes now, but there may be some stuff left, so we will run a few sites on a branch prior to merging
53 lines
1.1 KiB
Ruby
53 lines
1.1 KiB
Ruby
# frozen_string_literal: true
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require 'uri'
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class CreateTitle
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def self.from_body(body)
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title = remove_mentions body
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title = remove_urls title
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title = remove_stray_punctuation title
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title = first_long_line title
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return unless title
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sentences = complete_sentences title
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if !sentences.nil?
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title = sentences[1]
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else
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title = complete_words title
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end
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return title unless title.nil? || title.size < 20
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end
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private
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def self.remove_mentions(text)
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text.gsub(/@[\w]*/, '')
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end
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def self.remove_urls(text)
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text.gsub(URI::regexp(['http', 'https', 'mailto', 'ftp', 'ldap', 'ldaps']), '')
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end
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def self.remove_stray_punctuation(text)
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text.gsub(/\s+?[^a-zA-Z0-9\s]\s+/, "\n")
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end
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def self.first_long_line(text)
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lines = text.split("\n").select { |t| t.strip.size >= 20 }
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return if lines.empty?
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lines[0].strip
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end
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def self.complete_sentences(text)
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/(^.*[\S]{2,}[.!?:]+)\W/.match(text[0...80] + ' ')
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end
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def self.complete_words(text)
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return text[0...80].rpartition(/\s/)[0] + "..." if text.size >= 80
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text
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end
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end
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