class Nokogiri::EncodingHandler

static VALUE
rb_xml_encoding_handler_s_get(VALUE klass, VALUE key)
{
  xmlCharEncodingHandlerPtr handler;

  handler = xmlFindCharEncodingHandler(StringValueCStr(key));
  if (handler) {
    return TypedData_Wrap_Struct(klass, &xml_encoding_handler_type, handler);
  }

  return Qnil;
}

static VALUE
rb_xml_encoding_handler_s_alias(VALUE klass, VALUE from, VALUE to)
{
  xmlAddEncodingAlias(StringValueCStr(from), StringValueCStr(to));

  return to;
}

static VALUE
rb_xml_encoding_handler_s_clear_aliases(VALUE klass)
{
  xmlCleanupEncodingAliases();

  return klass;
}

static VALUE
rb_xml_encoding_handler_s_delete(VALUE klass, VALUE name)
{
  if (xmlDelEncodingAlias(StringValueCStr(name))) { return Qnil; }

  return Qtrue;
}

# File lib/nokogiri/encoding_handler.rb, line 15
def install_default_aliases
  USEFUL_ALIASES.each do |alias_name, name|
    EncodingHandler.alias(name, alias_name) if EncodingHandler[alias_name].nil?
  end
end

static VALUE
rb_xml_encoding_handler_name(VALUE self)
{
  xmlCharEncodingHandlerPtr handler;

  TypedData_Get_Struct(self, xmlCharEncodingHandler, &xml_encoding_handler_type, handler);

  return NOKOGIRI_STR_NEW2(handler->name);
}