51 lines
1.1 KiB
Ruby
51 lines
1.1 KiB
Ruby
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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