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mastodon/app/helpers/email_helper.rb

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# frozen_string_literal: true
module EmailHelper
def self.included(base)
base.extend(self)
end
def email_to_canonical_email(str)
username, domain = str.downcase.split('@', 2)
username, = username.delete('.').split('+', 2)
"#{username}@#{domain}"
end
def email_to_canonical_email_hash(str)
Digest::SHA2.new(256).hexdigest(email_to_canonical_email(str))
end
end