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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
60 lines
1.8 KiB
Ruby
60 lines
1.8 KiB
Ruby
# encoding: utf-8
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# frozen_string_literal: true
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module Slug
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CHAR_FILTER_REGEXP = /[:\/\?#\[\]@!\$&'\(\)\*\+,;=_\.~%\\`^\s|\{\}"<>]+/ # :/?#[]@!$&'()*+,;=_.~%\`^|{}"<>
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MAX_LENGTH = 255
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def self.for(string, default = 'topic', max_length = MAX_LENGTH)
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string = string.gsub(/:([\w\-+]+(?::t\d)?):/, '') if string.present? # strip emoji strings
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slug =
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case (SiteSetting.slug_generation_method || :ascii).to_sym
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when :ascii then self.ascii_generator(string)
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when :encoded then self.encoded_generator(string)
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when :none then self.none_generator(string)
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end
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# Reject slugs that only contain numbers, because they would be indistinguishable from id's.
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slug = (slug =~ /[^\d]/ ? slug : '')
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slug = self.prettify_slug(slug, max_length: max_length)
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slug.blank? ? default : slug
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end
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def self.sanitize(string, downcase: false, max_length: MAX_LENGTH)
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slug = self.encoded_generator(string, downcase: downcase)
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self.prettify_slug(slug, max_length: max_length)
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end
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private
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def self.prettify_slug(slug, max_length:)
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slug
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.tr("_", "-")
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.truncate(max_length, omission: '')
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.squeeze('-') # squeeze continuous dashes to prettify slug
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.gsub(/\A-+|-+\z/, '') # remove possible trailing and preceding dashes
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end
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def self.ascii_generator(string)
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I18n.with_locale(SiteSetting.default_locale) do
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string.tr("'", "").parameterize
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end
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end
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def self.encoded_generator(string, downcase: true)
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# This generator will sanitize almost all special characters,
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# including reserved characters from RFC3986.
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# See also URI::REGEXP::PATTERN.
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string = string.strip
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.gsub(/\s+/, '-')
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.gsub(CHAR_FILTER_REGEXP, '')
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downcase ? string.downcase : string
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end
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def self.none_generator(string)
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''
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end
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end
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