discourse/script/import_scripts/socialcast/create_title.rb

52 lines
1.1 KiB
Ruby

# frozen_string_literal: true
require "uri"
class CreateTitle
def self.from_body(body)
title = remove_mentions body
title = remove_urls title
title = remove_stray_punctuation title
title = first_long_line title
return unless title
sentences = complete_sentences title
if !sentences.nil?
title = sentences[1]
else
title = complete_words title
end
title unless title.nil? || title.size < 20
end
private
def self.remove_mentions(text)
text.gsub(/@[\w]*/, "")
end
def self.remove_urls(text)
text.gsub(URI.regexp(%w[http https mailto ftp ldap ldaps]), "")
end
def self.remove_stray_punctuation(text)
text.gsub(/\s+?[^a-zA-Z0-9\s]\s+/, "\n")
end
def self.first_long_line(text)
lines = text.split("\n").select { |t| t.strip.size >= 20 }
return if lines.empty?
lines[0].strip
end
def self.complete_sentences(text)
/(^.*[\S]{2,}[.!?:]+)\W/.match(text[0...80] + " ")
end
def self.complete_words(text)
return text[0...80].rpartition(/\s/)[0] + "..." if text.size >= 80
text
end
end