Class: EmailDomainChecker::Normalizer

Inherits:
Object
  • Object
show all
Defined in:
lib/email_domain_checker/normalizer.rb

Class Method Summary collapse

Class Method Details

.idn_to_ascii(domain) ⇒ Object 



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# File 'lib/email_domain_checker/normalizer.rb', line 20

def self.idn_to_ascii(domain)
  # Simple IDN conversion using built-in methods
  # For production, consider using the 'simpleidn' gem
  begin
    # Try to encode as IDN if it contains non-ASCII characters
    if domain.match?(/[^\x00-\x7F]/)
      # Fallback: return as-is if IDN conversion fails
      # In production, use: SimpleIDN.to_ascii(domain)
      domain
    else
      domain
    end
  rescue StandardError
    domain
  end
end

.normalize(raw) ⇒ Object 



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# File 'lib/email_domain_checker/normalizer.rb', line 5

def self.normalize(raw)
  return "" if raw.nil? || raw.to_s.strip.empty?

  email_str = raw.to_s.strip
  return "" if email_str.empty?

  # Basic normalization: lowercase and IDN handling
  local, domain = email_str.downcase.split("@", 2)
  return email_str unless local && domain && !local.empty? && !domain.empty?

  # IDN (Internationalized Domain Name) conversion
  domain = idn_to_ascii(domain)
  "#{local}@#{domain}"
end