Module: SimpleIDN

Defined in:
lib/simpleidn.rb

Defined Under Namespace

Modules: Punycode Classes: ConversionError

Constant Summary collapse

VERSION = 
"0.0.9"
ACE_PREFIX = 
'xn--'.encode(Encoding::UTF_8).freeze
ASCII_MAX = 
0x7F
DOT = 
0x2E.chr(Encoding::UTF_8).freeze
LABEL_SEPERATOR_RE = 
/[\u002e]/

Class Method Summary collapse

Class Method Details

.to_ascii(domain) ⇒ Object

Converts a UTF-8 unicode string to a punycode ACE string.

Example

SimpleIDN.to_ascii("møllerriis.com")
 => "xn--mllerriis-l8a.com"



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# File 'lib/simpleidn.rb', line 208

def to_ascii(domain)
  return nil if domain.nil?
  domain_array = domain.encode(Encoding::UTF_8).split(LABEL_SEPERATOR_RE) rescue []
  return domain if domain_array.length == 0
  out = []
  domain_array.each do |s|
    out << (s.codepoints.any? { |cp| cp > ASCII_MAX } ? ACE_PREFIX + Punycode.encode(s) : s)
  end
  out.join(DOT).encode(domain.encoding)
end

.to_unicode(domain) ⇒ Object

Converts a punycode ACE string to a UTF-8 unicode string.

Example

SimpleIDN.to_unicode("xn--mllerriis-l8a.com")
 => "møllerriis.com"



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# File 'lib/simpleidn.rb', line 223

def to_unicode(domain)
  return nil if domain.nil?
  domain_array = domain.encode(Encoding::UTF_8).split(LABEL_SEPERATOR_RE) rescue []
  return domain if domain_array.length == 0
  out = []
  domain_array.each do |s|
    out << (s.downcase.start_with?(ACE_PREFIX) ? Punycode.decode(s[ACE_PREFIX.length..-1]) : s)
  end
  out.join(DOT).encode(domain.encoding)
end