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<?php |
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namespace FigTree\Config; |
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use ArrayIterator; |
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use Traversable; |
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use FigTree\Exceptions\{ |
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InvalidFileException, |
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InvalidPathException, |
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UnreadablePathException, |
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}; |
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use FigTree\Config\Exceptions\ReadOnlyException; |
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use FigTree\Config\Contracts\ConfigInterface; |
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abstract class AbstractConfig implements ConfigInterface |
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{ |
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/** |
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* Paths of underlying Config files. |
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*/ |
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protected array $paths = []; |
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/** |
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* Configuration data. |
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*/ |
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protected array $data = []; |
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/** |
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* Indicates if Config data has already been read. |
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*/ |
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protected bool $isRead = false; |
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/** |
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* Get the paths of the underlying Config files. |
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* |
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* @return array |
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*/ |
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public function getPaths(): array |
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{ |
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return $this->paths; |
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} |
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/** |
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* Magic method to handle key_exists/isset checks of an array value on the object. |
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* |
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* @param string|int $offset |
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* |
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* @return boolean |
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*/ |
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public function offsetExists($offset): bool |
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{ |
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$this->read(); |
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return key_exists($offset, $this->data); |
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} |
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/** |
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* Magic method to handle retrieval of an array value on the object. |
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* |
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* @param string|int $offset |
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* |
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* @return mixed |
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*/ |
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public function offsetGet($offset) |
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{ |
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return $this->read()->data[$offset] ?? null; |
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} |
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/** |
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* Magic method to handle modification of an array value on the object. |
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* |
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* @param string|int $offset |
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* @param mixed $value |
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* |
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* @return void |
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* |
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* @throws \FigTree\Config\Exceptions\ReadOnlyException |
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*/ |
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public function offsetSet($offset, $value): void |
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{ |
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throw new ReadOnlyException($offset); |
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} |
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/** |
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* Magic method to handle removal of an array value on the object. |
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* |
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* @param string|int $offset |
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* |
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* @return void |
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* |
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* @throws \FigTree\Config\Exceptions\ReadOnlyException |
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*/ |
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public function offsetUnset($offset): void |
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{ |
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throw new ReadOnlyException($offset); |
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} |
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/** |
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* Convert the object into an array. |
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* |
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* @return array |
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*/ |
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public function toArray(): array |
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{ |
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return $this->read()->data; |
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} |
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/** |
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* Convert the object into JSON. |
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* |
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* @param integer $options |
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* @param integer $depth |
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* |
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* @return string |
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*/ |
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public function toJson(int $options = 0, int $depth = 512): string |
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{ |
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if (($options & JSON_THROW_ON_ERROR) === 0) { |
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$options |= JSON_THROW_ON_ERROR; |
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} |
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return json_encode($this, $options, $depth); |
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} |
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/** |
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* Convert the object into a string. |
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* |
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* @return string |
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*/ |
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public function toString(): string |
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{ |
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return $this->__toString(); |
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} |
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/** |
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* Magic method called on JSON serialization of the object. |
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* |
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* @return array The data to be serialized. |
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*/ |
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public function jsonSerialize() |
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{ |
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return $this->toArray(); |
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} |
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/** |
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* Magic method called during serialization to a string. |
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* |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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return serialize($this); |
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} |
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/** |
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* Retrieve an external iterator. |
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* |
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* @return \Traversable |
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*/ |
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public function getIterator(): Traversable |
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{ |
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return new ArrayIterator($this->data); |
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} |
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/** |
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* Resolve the given filename of a Config file, add it to the |
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* array of files, and mark the Config as unread. |
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* |
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* @param string $fileName |
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* |
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* @return $this |
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* |
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* @throws \FigTree\Exceptions\InvalidPathException |
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* @throws \FigTree\Exceptions\InvalidFileException |
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*/ |
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protected function addPath(string $fileName): ConfigInterface |
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{ |
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$path = realpath($fileName); |
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if (empty($path)) { |
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throw new InvalidPathException($fileName); |
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} |
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if (!is_file($path)) { |
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throw new InvalidFileException($path); |
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} |
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$this->paths[] = $path; |
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$this->isRead = false; |
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return $this; |
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} |
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/** |
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* Clear and read in all Config data. |
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* |
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* @return $this |
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*/ |
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protected function read() |
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{ |
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if ($this->isRead) { |
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return $this; |
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} |
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$this->data = []; |
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foreach ($this->paths as $path) { |
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$this->readFile($path); |
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} |
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$this->isRead = true; |
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return $this; |
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} |
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/** |
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* Read the result of the Config file into the object's data. |
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* |
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* @param string $path |
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* |
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* @return $this |
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* |
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* @throws \FigTree\Exceptions\UnreadablePathException |
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* @throws \FigTree\Config\Exceptions\InvalidConfigFileException |
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*/ |
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protected function readFile(string $path): ConfigInterface |
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{ |
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if (!is_readable($path)) { |
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throw new UnreadablePathException($path); |
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} |
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$reader = $this->createReader(); |
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$data = $reader->read($path); |
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$this->data = array_replace_recursive($this->data, $data); |
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return $this; |
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} |
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} |
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