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<?php |
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namespace kalanis\kw_clipr\Loaders; |
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use kalanis\kw_clipr\Clipr\Useful; |
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use kalanis\kw_clipr\CliprException; |
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use kalanis\kw_clipr\Interfaces; |
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use kalanis\kw_clipr\Tasks\ATask; |
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use ReflectionException; |
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/** |
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* Class KwLoader |
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* @package kalanis\kw_clipr\Tasks |
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* Factory for creating tasks/commands from obtained name |
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* In reality it runs like autoloader of own |
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*/ |
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class KwLoader implements Interfaces\ITargetDirs |
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{ |
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/** @var array<string, array<string>> */ |
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protected array $paths = []; |
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/** |
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* @param array<string, array<string>> $paths |
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* @throws CliprException |
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*/ |
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public function __construct(array $paths = []) |
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{ |
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foreach ($paths as $namespace => $path) { |
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$pt = implode(DIRECTORY_SEPARATOR, $path); |
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if (false === $real = realpath($pt)) { |
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throw new CliprException(sprintf('Unknown path *%s*!', $pt), Interfaces\IStatuses::STATUS_BAD_CONFIG); |
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} |
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$this->paths[$namespace] = explode(DIRECTORY_SEPARATOR, $real); |
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} |
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} |
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/** |
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* @param string $classFromParam |
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* @throws CliprException |
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* @throws ReflectionException |
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* @return ATask|null |
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* For making instances from more than one path |
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* Now it's possible to read from different paths as namespace sources |
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* Also each class will be loaded only once |
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*/ |
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public function getTask(string $classFromParam): ?ATask |
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{ |
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$classPath = $this->removeExt(Useful::sanitizeClass($classFromParam)); |
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foreach ($this->paths as $namespace => $path) { |
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if ($this->containsPath($classPath, $namespace)) { |
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$translatedPath = $this->classPathToRealFile($classPath, $namespace); |
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$realPath = $this->makeRealFilePath($path, $translatedPath); |
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if (is_null($realPath)) { |
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return null; |
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} |
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require_once $realPath; |
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if (!class_exists($classPath)) { |
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// that file contains none wanted class |
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return null; |
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} |
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$reflection = new \ReflectionClass($classPath); |
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if (!$reflection->isInstantiable()) { |
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// cannot initialize the class - abstract one, interface, trait, ... |
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return null; |
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} |
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$class = $reflection->newInstance(); |
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if (!$class instanceof ATask) { |
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// the class inside is not an instance of ATask necessary to run |
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throw new CliprException(sprintf('Class *%s* is not instance of ATask - check interface or query.', $classPath), Interfaces\IStatuses::STATUS_LIB_ERROR); |
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} |
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return $class; |
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} |
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} |
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return null; |
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} |
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protected function containsPath(string $classPath, string $namespace): bool |
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{ |
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return (0 === mb_strpos($classPath, $namespace)); |
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} |
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protected function removeExt(string $classPath): string |
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{ |
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// remove ext |
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$withExt = mb_strripos($classPath, Interfaces\ISources::EXT_PHP); |
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return (false !== $withExt) |
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&& (mb_strlen($classPath) == $withExt + mb_strlen(Interfaces\ISources::EXT_PHP)) |
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? mb_substr($classPath, 0, $withExt) |
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: $classPath; |
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} |
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protected function classPathToRealFile(string $classPath, string $namespace): string |
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{ |
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// change slashes |
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$classNoExt = strtr($classPath, ['\\' => DIRECTORY_SEPARATOR, '/' => DIRECTORY_SEPARATOR, ':' => DIRECTORY_SEPARATOR]); |
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// remove slash from start |
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$classNoStartSlash = (DIRECTORY_SEPARATOR == $classNoExt[0]) ? mb_substr($classNoExt, mb_strlen(DIRECTORY_SEPARATOR)) : $classNoExt; |
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// rewrite namespace |
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return mb_substr($classNoStartSlash, mb_strlen($namespace)); |
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} |
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/** |
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* @param string[] $namespacePath |
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* @param string $classPath |
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* @-throws CliprException |
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* @return string|null |
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*/ |
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protected function makeRealFilePath(array $namespacePath, string $classPath): ?string |
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{ |
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$setPath = implode(DIRECTORY_SEPARATOR, $namespacePath) . $classPath . Interfaces\ISources::EXT_PHP; |
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$realPath = realpath($setPath); |
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if (empty($realPath)) { |
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return null; |
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// throw new CliprException(sprintf('There is problem with path *%s* - it does not exists!', $setPath), Interfaces\IStatuses::STATUS_BAD_CONFIG); |
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} |
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return $realPath; |
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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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alex-kalanis /
kw_clipr
