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<?php |
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declare(strict_types=1); |
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namespace EdmondsCommerce\DoctrineStaticMeta\CodeGeneration\Filesystem; |
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use EdmondsCommerce\DoctrineStaticMeta\Exception\DoctrineStaticMetaException; |
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use RuntimeException; |
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use SplFileInfo; |
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use function realpath; |
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abstract class AbstractFilesystemItem |
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{ |
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/** |
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* This is the name of the path type. It should be overridden in child classes. |
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* |
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* @var string |
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*/ |
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protected const PATH_TYPE = 'override me'; |
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/** |
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* This is the path as configured for the filesystem item. It in no way means the item exists there, it is simply |
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* where we expect it to exist if/when it has been created |
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* |
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* @var string |
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*/ |
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protected $path; |
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/** |
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* What permissions should be set to created filesystem items? |
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* |
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* @var int |
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*/ |
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protected $createModeOctal = 0777; |
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/** |
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* A string representation of the octal number |
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* |
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* @var string |
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*/ |
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protected $createModeOctalString = '0777'; |
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/** |
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* Stores an instance fo the SplFileInfo object for the path item. |
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* |
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* @var SplFileInfo |
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*/ |
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protected $splFileInfo; |
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/** |
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* @param string $path - the path where we would expect the item to exist if/when it has been created |
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*/ |
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public function __construct(string $path = null) |
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{ |
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if (static::PATH_TYPE === self::PATH_TYPE) { |
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throw new RuntimeException('You must override the PATH_TYPE in your concrete class'); |
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} |
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if (null !== $path) { |
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$this->setPath($path); |
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} |
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} |
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/** |
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* Create the filesystem item, asserting that it does not already exist |
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* |
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* @return static |
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* @throws DoctrineStaticMetaException |
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*/ |
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public function create() |
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{ |
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$this->assertPathIsSet(); |
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$this->assertNotExists(); |
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$this->doCreate(); |
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$this->setPermissions(); |
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return $this; |
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} |
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/** |
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* @throws DoctrineStaticMetaException |
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*/ |
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protected function assertPathIsSet(): void |
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{ |
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if (null === $this->path) { |
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throw new DoctrineStaticMetaException('$this->path is not set'); |
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} |
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} |
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/** |
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* Throw an Exception if there is already something that exists at the path |
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* |
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* @throws DoctrineStaticMetaException |
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*/ |
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protected function assertNotExists(): void |
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{ |
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if (true === $this->exists()) { |
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throw new DoctrineStaticMetaException(static::PATH_TYPE . ' already exists at path ' . $this->path); |
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} |
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} |
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/** |
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* Check if something exists at the real path |
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* |
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* @return bool |
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*/ |
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public function exists(): bool |
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{ |
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$realPath = realpath($this->path); |
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if (false === $realPath) { |
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return false; |
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} |
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$this->path = $realPath; |
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$this->assertCorrectType(); |
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return true; |
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} |
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/** |
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* Check that the path is actually a file/directory etc |
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* |
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* @return void |
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*/ |
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protected function assertCorrectType(): void |
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{ |
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if (false === $this->isCorrectType()) { |
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throw new RuntimeException('path is not the correct type: ' . $this->path); |
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} |
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} |
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abstract protected function isCorrectType(): bool; |
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/** |
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* This is the specific creation logic for the concrete filesystem type. |
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*/ |
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abstract protected function doCreate(): void; |
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private function setPermissions(): void |
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{ |
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chmod($this->path, $this->createModeOctal); |
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} |
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/** |
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* Get the path to the filesystem item as it is currently set in this object |
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* |
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* @return null|string |
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*/ |
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public function getPath(): ?string |
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{ |
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return $this->path; |
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} |
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/** |
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* Set the string path to the filesystem item |
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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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public function setPath(string $path) |
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{ |
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$this->path = $path; |
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return $this; |
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} |
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/** |
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* Provide an SplFileInfo object, asserting that the path exists |
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* |
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* @return SplFileInfo |
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* @throws DoctrineStaticMetaException |
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*/ |
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public function getSplFileInfo(): SplFileInfo |
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{ |
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if (null !== $this->splFileInfo && $this->path === $this->splFileInfo->getRealPath()) { |
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return $this->splFileInfo; |
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} |
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$this->assertExists(); |
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return $this->createSplFileInfo(); |
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} |
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protected function assertExists(): void |
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{ |
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$this->assertPathIsSet(); |
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if (false === $this->exists()) { |
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throw new DoctrineStaticMetaException(static::PATH_TYPE . ' does not exist at path ' . $this->path); |
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} |
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} |
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/** |
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* Create an SplFileInfo, assuming the path already exists |
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* |
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* @return SplFileInfo |
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*/ |
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protected function createSplFileInfo(): SplFileInfo |
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{ |
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if (null !== $this->splFileInfo && $this->path === $this->splFileInfo->getRealPath()) { |
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return $this->splFileInfo; |
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} |
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$this->splFileInfo = new SplFileInfo($this->path); |
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return $this->splFileInfo; |
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} |
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/** |
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* @param int $createMode |
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* |
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* @return static |
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*/ |
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public function setCreateMode(int $createMode): self |
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{ |
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$this->createModeOctal = $createMode; |
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$this->createModeOctalString = decoct($createMode); |
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return $this; |
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} |
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} |
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