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<?php |
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/* this file is part of pipelines */ |
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namespace Ktomk\Pipelines\File\Pipeline; |
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use Ktomk\Pipelines\File\Definitions\Caches; |
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use Ktomk\Pipelines\File\Dom\FileNode; |
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use Ktomk\Pipelines\File\File; |
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use Ktomk\Pipelines\File\ParseException; |
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/** |
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* Class StepCaches |
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* |
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* Caches entry in a step |
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* |
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* @package Ktomk\Pipelines\File\File |
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*/ |
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class StepCaches implements FileNode, \IteratorAggregate |
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{ |
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/** |
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* @var Step |
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*/ |
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private $step; |
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/** |
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* @var array |
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* @psalm-var array<string, int> |
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*/ |
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private $caches; |
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/** |
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* StepCaches constructor. |
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* |
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* @param Step $step |
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* @param null|array|mixed $caches |
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* |
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* @return void |
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*/ |
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public function __construct(Step $step, $caches) |
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{ |
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$this->step = $step; |
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// quick validation: script |
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$parsed = $this->parseCaches($caches); |
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$this->caches = array_flip($parsed); |
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} |
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/** |
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* get step caches (as defined) |
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* |
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* @return array cache map |
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*/ |
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public function getDefinitions() |
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{ |
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if (null === $file = $this->getFile()) { |
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return array(); |
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} |
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return $file->getDefinitions()->getCaches()->getByNames($this->getNames()); |
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} |
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/** |
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* Get all cache names of step |
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* @return array|string[] |
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*/ |
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public function getNames() |
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{ |
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return array_keys($this->caches); |
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} |
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/** |
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* @return null|File |
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*/ |
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public function getFile() |
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{ |
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return $this->step->getFile(); |
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} |
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/** |
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* @return \ArrayIterator|string[] |
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*/ |
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public function getIterator() |
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{ |
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return new \ArrayIterator($this->getDefinitions()); |
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} |
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/** |
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* parse caches |
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* |
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* @param null|array|mixed $caches |
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* |
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* @return string[] |
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*/ |
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private function parseCaches($caches) |
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{ |
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if (!is_array($caches)) { |
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throw new ParseException("'caches' requires a list of caches"); |
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} |
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$reservoir = array(); |
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foreach ($caches as $cache) { |
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if (!is_string($cache)) { |
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throw new ParseException("'caches' cache name string expected"); |
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} |
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'' === ($cache = trim($cache)) || $reservoir[] = $cache; |
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if ('' === $cache) { |
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throw new ParseException("'caches' cache name must not be empty"); |
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} |
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if (null === $this->getCacheDefinitionByName($cache)) { |
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throw new ParseException( |
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sprintf("cache '%s' must reference a custom or default cache definition", $cache) |
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); |
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} |
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} |
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return $reservoir; |
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} |
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/** |
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* @param string $name |
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* |
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* @return null|string|true |
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*/ |
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private function getCacheDefinitionByName($name) |
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{ |
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$file = $this->step->getFile(); |
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$definitions = $file ? $file->getDefinitions()->getCaches() : $file; |
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return $definitions ? $definitions->getByName($name) : null; |
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} |
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} |
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ktomk /
pipelines
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