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<?php
namespace Aws\Arn;
use Aws\Arn\S3\AccessPointArn as S3AccessPointArn;
use Aws\Arn\ObjectLambdaAccessPointArn;
use Aws\Arn\S3\MultiRegionAccessPointArn;
use Aws\Arn\S3\OutpostsBucketArn;
use Aws\Arn\S3\RegionalBucketArn;
use Aws\Arn\S3\OutpostsAccessPointArn;
/**
* This class provides functionality to parse ARN strings and return a
* corresponding ARN object. ARN-parsing logic may be subject to change in the
* future, so this should not be relied upon for external customer usage.
*
* @internal
*/
class ArnParser
{
/**
* @param $string
* @return bool
*/
public static function isArn($string)
{
return $string !== null && strpos($string, 'arn:') === 0;
}
/**
* Parses a string and returns an instance of ArnInterface. Returns a
* specific type of Arn object if it has a specific class representation
* or a generic Arn object if not.
*
* @param $string
* @return ArnInterface
*/
public static function parse($string)
{
$data = Arn::parse($string);
if ($data['service'] === 's3-object-lambda') {
return new ObjectLambdaAccessPointArn($string);
}
$resource = self::explodeResourceComponent($data['resource']);
if ($resource[0] === 'outpost') {
if (isset($resource[2]) && $resource[2] === 'bucket') {
return new OutpostsBucketArn($string);
}
if (isset($resource[2]) && $resource[2] === 'accesspoint') {
return new OutpostsAccessPointArn($string);
}
}
if (empty($data['region'])) {
return new MultiRegionAccessPointArn($string);
}
if ($resource[0] === 'accesspoint') {
if ($data['service'] === 's3') {
return new S3AccessPointArn($string);
}
return new AccessPointArn($string);
}
return new Arn($data);
}
private static function explodeResourceComponent($resource)
{
return preg_split("/[\/:]/", $resource);
}
}
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