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806255b3c4
introduce a couple of custom validators fix minor discrepancies in tests copy I18n error message keys to default location clean up validation invocation move some responsibilities out of validator into class
53 lines
1.4 KiB
Ruby
53 lines
1.4 KiB
Ruby
#
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# Given a string, tell us whether or not is acceptable.
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#
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class TextSentinel
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attr_accessor :text
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def initialize(text, opts=nil)
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@opts = opts || {}
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@text = text.to_s.encode('UTF-8', invalid: :replace, undef: :replace, replace: '')
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end
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def self.non_symbols_regexp
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/[\ -\/\[-\`\:-\@\{-\~]/m
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end
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def self.body_sentinel(text)
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TextSentinel.new(text, min_entropy: SiteSetting.body_min_entropy)
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end
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def self.title_sentinel(text)
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TextSentinel.new(text,
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min_entropy: SiteSetting.title_min_entropy,
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max_word_length: SiteSetting.max_word_length)
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end
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# Entropy is a number of how many unique characters the string needs.
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def entropy
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@entropy ||= @text.to_s.strip.split('').uniq.size
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end
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def valid?
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# Blank strings are not valid
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@text.present? &&
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# Minimum entropy if entropy check required
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(@opts[:min_entropy].blank? || (entropy >= @opts[:min_entropy])) &&
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# At least some non-symbol characters
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# (We don't have a comprehensive list of symbols, but this will eliminate some noise)
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(@text.gsub(TextSentinel.non_symbols_regexp, '').size > 0) &&
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# Don't allow super long words if there is a word length maximum
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(@opts[:max_word_length].blank? || @text.split(/\W/).map(&:size).max <= @opts[:max_word_length] ) &&
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# We don't allow all upper case content in english
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not((@text =~ /[A-Z]+/) && (@text == @text.upcase)) &&
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true
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end
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end
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