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<?php |
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namespace Alchemy\Zippy\Resource; |
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final class ResourceUri |
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{ |
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const DEFAULT_PROTOCOL = 'file'; |
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/** |
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* @param $uri |
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* @return array |
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*/ |
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private static function getNonEmptyParts($uri) |
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{ |
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$nonEmptyStringFilter = function ($value) { |
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return $value != ''; |
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}; |
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return array_filter(explode(self::PROTOCOL_SEPARATOR, $uri, 2), $nonEmptyStringFilter); |
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} |
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const PROTOCOL_SEPARATOR = '://'; |
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/** |
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* @param $parts |
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* @return bool |
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*/ |
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private static function validateResourceParts($parts) |
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{ |
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return count($parts) === 2; |
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} |
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/** |
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* @param $protocol |
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* @param $resource |
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* @return self |
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*/ |
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public static function fromProtocolAndResource($protocol, $resource) |
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{ |
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return new self($protocol . self::PROTOCOL_SEPARATOR . $resource); |
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} |
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/** |
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* @param $uri |
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* @return bool |
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*/ |
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public static function isValidUri($uri) |
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{ |
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if (strpos($uri, self::PROTOCOL_SEPARATOR) === false) { |
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return false; |
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} |
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$parts = self::getNonEmptyParts($uri); |
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if (! self::validateResourceParts($parts)) { |
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return false; |
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} |
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if (strpos($parts[1], self::PROTOCOL_SEPARATOR) !== false) { |
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return self::isValidUri($parts[1]); |
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} |
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return true; |
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} |
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public static function fromString($uri) |
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{ |
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if (strpos($uri, self::PROTOCOL_SEPARATOR) === false) { |
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$uri = self::DEFAULT_PROTOCOL . self::PROTOCOL_SEPARATOR . $uri; |
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} |
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return new self($uri); |
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} |
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public static function fromStringArray(array $uris) |
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{ |
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$resourceUris = []; |
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foreach ($uris as $uri) { |
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$resourceUris[] = self::fromString($uri); |
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} |
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return $resourceUris; |
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} |
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/** |
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* @var string |
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*/ |
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private $uri; |
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/** |
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* @var string |
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*/ |
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private $protocol; |
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/** |
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* @var string |
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*/ |
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private $resource; |
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/** |
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* @param string $uri |
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*/ |
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public function __construct($uri) |
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{ |
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if (! self::isValidUri($uri)) { |
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throw new \InvalidArgumentException(sprintf( |
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'Malformed URI: required format is "protocol://resource", got "%s"', |
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$uri |
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)); |
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} |
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$this->uri = $uri; |
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list ($this->protocol, $this->resource) = explode('://', $uri, 2); |
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} |
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/** |
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* @return string |
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*/ |
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public function getUri() |
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{ |
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return $this->uri; |
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} |
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/** |
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* @return string |
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*/ |
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public function getProtocol() |
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{ |
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return $this->protocol; |
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} |
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/** |
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* @return string |
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*/ |
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public function getResource() |
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{ |
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return $this->resource; |
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} |
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/** |
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* @return bool |
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*/ |
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public function hasChainedResource() |
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{ |
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return self::isValidUri($this->resource); |
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} |
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/** |
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* @return self |
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*/ |
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public function getChainedResource() |
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{ |
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return new self($this->resource); |
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} |
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/** |
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* @param ResourceUri $other |
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* @return bool |
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*/ |
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public function equals(ResourceUri $other) |
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{ |
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return $this->getUri() == $other->getUri(); |
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} |
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/** |
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* @return string |
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*/ |
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public function __toString() |
173
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{ |
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return $this->uri; |
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} |
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} |
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