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<?php |
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namespace Softius\ResourcesResolver; |
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use Interop\Container\ContainerInterface; |
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/** |
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* Class CallableResolver. |
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*/ |
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class CallableResolver implements ResolvableInterface |
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{ |
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const DEFAULT_METHOD_SEPARATOR = '::'; |
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const MODE_STRICT = 0b0001; |
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const MODE_LAZYLOAD = 0b0010; |
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/** |
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* @var ContainerInterface |
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*/ |
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private $container; |
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/** |
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* @var null|string |
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*/ |
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private $method_separator; |
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/** |
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* @var int |
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*/ |
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private $modes; |
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/** |
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* DefaultCallableStrategy constructor. |
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* |
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* @param \Interop\Container\ContainerInterface $container |
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* @param string $method_separator |
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*/ |
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public function __construct(ContainerInterface $container = null, $method_separator = null) |
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{ |
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$this->container = $container; |
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$this->method_separator = ($method_separator === null) ? self::DEFAULT_METHOD_SEPARATOR : $method_separator; |
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$this->modes = 0; |
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} |
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/** |
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* @param string $class |
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* @return string |
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*/ |
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protected function fillClass($class) |
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{ |
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// Use backtrace to find the calling Class |
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if (empty($class) || $class === 'parent' || $class === 'self') { |
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$trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 4); |
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$class = ($class === 'parent') ? get_parent_class($trace[3]['class']) : $trace[3]['class']; |
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} |
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if ($this->container !== null && $this->container->has($class)) { |
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$class = $this->container->get($class); |
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} |
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return $class; |
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} |
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/** |
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* @param int $mode |
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*/ |
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public function setMode($mode) |
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{ |
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$this->modes = $mode; |
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} |
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/** |
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* @param int $mode |
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* @return boolean |
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*/ |
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public function isMode($mode) |
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{ |
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return ($this->modes & $mode); |
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} |
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/** |
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* @param string $in |
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* @return array|\Closure |
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* @throws \Exception |
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*/ |
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public function resolve($in) |
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{ |
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if ($this->isMode(self::MODE_STRICT) && $this->isMode(self::MODE_LAZYLOAD)) { |
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return function() use ($in) { |
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return $this->resolveStrict($in); |
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}; |
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} elseif ($this->isMode(self::MODE_STRICT)) { |
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return $this->resolveStrict($in); |
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} elseif ($this->isMode(self::MODE_LAZYLOAD)) { |
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return function() use ($in) { |
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return $this->resolveCallable($in); |
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}; |
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} else { |
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return $this->resolveCallable($in); |
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} |
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} |
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/** |
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* @param string $in |
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* |
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* @return array |
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* |
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* @throws \Exception |
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*/ |
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protected function resolveCallable($in) |
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{ |
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$pos = strrpos($in, $this->method_separator); |
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if ($pos === false) { |
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throw new \Exception(sprintf('Method separator not found in %s', $in)); |
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} |
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$class = substr($in, 0, $pos); |
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$class = $this->fillClass($class); |
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$method = substr($in, $pos + strlen($this->method_separator)); |
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return [$class, $method]; |
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} |
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/** |
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* @param $in |
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* |
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* @return array |
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* |
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* @throws \Exception |
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*/ |
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protected function resolveStrict($in) |
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{ |
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$callable = $this->resolveCallable($in); |
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if (is_callable($callable)) { |
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return $callable; |
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} |
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throw new \Exception(sprintf('Could not resolve %s to a callable', $in)); |
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} |
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} |
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softius /
resources-resolver
