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<?php |
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/* |
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* This file is part of the puli/repository package. |
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* |
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* (c) Bernhard Schussek <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Puli\Repository\ChangeStream; |
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use Puli\Repository\Api\ChangeStream\ResourceStack; |
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use RuntimeException; |
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use Webmozart\Assert\Assert; |
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/** |
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* Resource stack stored as an array. |
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* |
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* @since 1.0 |
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* |
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* @author Titouan Galopin <[email protected]> |
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*/ |
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class ArrayResourceStack implements ResourceStack |
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{ |
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/** |
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* @var array |
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*/ |
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private $stack; |
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/** |
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* @param array $stack |
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*/ |
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public function __construct($stack) |
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{ |
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Assert::isArray($stack, 'Built resource stack must be an array.'); |
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$this->stack = $stack; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getCurrentVersion() |
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{ |
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if (0 === count($this->stack)) { |
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throw new RuntimeException('Could not retrieve the current version of an empty stack.'); |
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} |
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return end($this->stack); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getFirstVersion() |
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{ |
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if (0 === count($this->stack)) { |
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throw new RuntimeException('Could not retrieve the first version of an empty stack.'); |
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} |
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return reset($this->stack); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getVersion($versionNumber) |
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{ |
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if (0 === count($this->stack)) { |
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throw new RuntimeException(sprintf( |
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'Could not retrieve the version %s of an empty stack.', |
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$versionNumber |
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)); |
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} |
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Assert::oneOf($versionNumber, $this->getAvailableVersions(), 'Could not retrieve the version %s (stack: %s).'); |
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return $this->stack[$versionNumber]; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getAvailableVersions() |
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{ |
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return array_keys($this->stack); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function toArray() |
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{ |
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return $this->stack; |
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} |
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} |
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puli /
repository
