/**
* Initialize from ASN.1.
*
* @param Sequence $seq
* @return self
*/
public static function fromASN1(Sequence $seq)
{
$type = AttributeType::fromASN1($seq->at(0)->asObjectIdentifier());
$values = array_map(function (UnspecifiedType $el) use($type) {
return AttributeValue::fromASN1ByOID($type->oid(), $el);
}, $seq->at(1)->asSet()->elements());
return new self($type, ...$values);
}
/**
* Get all attributes of given name.
*
* @param string $name OID or attribute name
* @return Attribute[]
*/
public function allOf($name)
{
$oid = AttributeType::attrNameToOID($name);
$attrs = array_filter($this->_attributes, function (Attribute $attr) use($oid) {
return $attr->oid() == $oid;
});
return array_values($attrs);
}
/**
* Get OID of the attribute.
*
* @return string
*/
public function oid()
{
return $this->_type->oid();
}
/**
* Initialize from ASN.1.
*
* @param Sequence $seq
* @return self
*/
public static function fromASN1(Sequence $seq)
{
$type = AttributeType::fromASN1($seq->at(0)->asObjectIdentifier());
$value = AttributeValue::fromASN1ByOID($type->oid(), $seq->at(1));
return new self($type, $value);
}
/**
* Get the number of attributes of given type.
*
* @param string $name Attribute OID or name
* @return int
*/
public function countOfType($name)
{
$oid = AttributeType::attrNameToOID($name);
return array_sum(array_map(function (RDN $rdn) use($oid) {
return count($rdn->allOf($oid));
}, $this->_rdns));
}