/**
* Converts any normalized part back to IDNA. Performs conversion and
* resets flag.
*
* @param string $part Host part
*
* @return string Denormalized host part
*/
protected function denormalize($part)
{
if ($this->isNormalized === true) {
$part = $this->punycodeWrapper->decode($part);
$this->isNormalized = false;
}
return $part;
}
/**
* Recursive method to build the array representation of the Public Suffix List.
*
* This method is based heavily on the code found in generateEffectiveTLDs.php
*
* @link https://github.com/usrflo/registered-domain-libs/blob/master/generateEffectiveTLDs.php
* A copy of the Apache License, Version 2.0, is provided with this
* distribution
*
* @param array $publicSuffixListArray Initially an empty array, this eventually
* becomes the array representation of the Public Suffix List
* @param array $ruleParts One line (rule) from the Public Suffix List
* exploded on '.', or the remaining portion of that array during recursion
*/
public function buildArray(array &$publicSuffixListArray, array $ruleParts)
{
$isDomain = true;
$part = array_pop($ruleParts);
// Adheres to canonicalization rule from the "Formal Algorithm" section
// of https://publicsuffix.org/list/
// "The domain and all rules must be canonicalized in the normal way
// for hostnames - lower-case, Punycode (RFC 3492)."
$punycode = new PunycodeWrapper();
$part = $punycode->encode($part);
if (strpos($part, '!') === 0) {
$part = substr($part, 1);
$isDomain = false;
}
if (!isset($publicSuffixListArray[$part])) {
if ($isDomain) {
$publicSuffixListArray[$part] = array();
} else {
$publicSuffixListArray[$part] = array('!' => '');
}
}
if ($isDomain && count($ruleParts) > 0) {
$this->buildArray($publicSuffixListArray[$part], $ruleParts);
}
}