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<?php |
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declare(strict_types=1); |
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namespace TYPO3\PharStreamWrapper\Resolver; |
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/* |
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* This file is part of the TYPO3 project. |
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* |
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* It is free software; you can redistribute it and/or modify it under the terms |
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* of the MIT License (MIT). For the full copyright and license information, |
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* please read the LICENSE file that was distributed with this source code. |
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* |
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* The TYPO3 project - inspiring people to share! |
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*/ |
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class PharInvocationStack |
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{ |
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const UNIQUE_INVOCATION = 1; |
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const UNIQUE_BASE_NAME = 2; |
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const DUPLICATE_ALIAS_WARNING = 32; |
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/** |
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* @var PharInvocation[] |
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*/ |
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private $invocations = []; |
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/** |
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* @param PharInvocation $invocation |
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* @param null|int $flags |
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* @return bool |
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*/ |
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public function learn(PharInvocation $invocation, int $flags = null): bool |
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{ |
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if ($flags === null) { |
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$flags = static::UNIQUE_INVOCATION | static::DUPLICATE_ALIAS_WARNING; |
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} |
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if ($invocation->getAlias() === '' |
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|| !$this->assertUniqueBaseName($invocation, $flags) |
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|| !$this->assertUniqueInvocation($invocation, $flags) |
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) { |
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return false; |
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} |
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if ($flags & static::DUPLICATE_ALIAS_WARNING) { |
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$this->triggerDuplicateAliasWarning($invocation); |
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} |
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$this->invocations[] = $invocation; |
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return true; |
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} |
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/** |
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* @param string $baseName |
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* @param string $alias |
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* @param bool $reverse |
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* @return null|PharInvocation |
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*/ |
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public function findByBaseNameAndAlias(string $baseName, string $alias, bool $reverse = false) |
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{ |
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if ($baseName === '' || $alias === '') { |
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return null; |
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} |
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foreach ($this->getInvocations($reverse) as $invocation) { |
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if ($invocation->getBaseName() === $baseName && $invocation->getAlias() === $alias) { |
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return $invocation; |
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} |
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} |
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return null; |
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} |
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/** |
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* @param string $baseName |
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* @param bool $reverse |
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* @return null|PharInvocation |
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*/ |
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public function findByBaseName(string $baseName, bool $reverse = false) |
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{ |
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if ($baseName === '') { |
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return null; |
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} |
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foreach ($this->getInvocations($reverse) as $invocation) { |
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if ($invocation->getBaseName() === $baseName) { |
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return $invocation; |
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} |
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} |
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return null; |
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} |
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/** |
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* @param string $alias |
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* @param bool $reverse |
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* @return null|PharInvocation |
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*/ |
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public function findByAlias(string $alias, bool $reverse = false) |
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{ |
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if ($alias === '') { |
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return null; |
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} |
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foreach ($this->getInvocations($reverse) as $invocation) { |
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if ($invocation->getAlias() === $alias) { |
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return $invocation; |
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} |
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} |
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return null; |
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} |
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/** |
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* Asserts that base-name is unique. This disallows having multiple invocations for |
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* same base-name but having different alias names. |
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* |
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* @param PharInvocation $invocation |
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* @param int $flags |
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* @return bool |
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*/ |
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private function assertUniqueBaseName(PharInvocation $invocation, int $flags): bool |
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{ |
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if ($flags ^ static::UNIQUE_BASE_NAME) { |
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return true; |
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} |
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return $this->findByBaseName($invocation->getBaseName()) !== null; |
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} |
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/** |
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* Asserts that combination of base-name and alias is unique. This allows having multiple |
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* invocations for same base-name but having different alias names (for whatever reason). |
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* |
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* @param PharInvocation $invocation |
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* @param int $flags |
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* @return bool |
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*/ |
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private function assertUniqueInvocation(PharInvocation $invocation, int $flags): bool |
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{ |
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if ($flags ^ static::UNIQUE_INVOCATION) { |
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return true; |
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} |
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return $this->findByBaseNameAndAlias($invocation->getBaseName(), $invocation->getAlias()) !== null; |
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} |
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/** |
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* @param PharInvocation $invocation |
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*/ |
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private function triggerDuplicateAliasWarning(PharInvocation $invocation) |
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{ |
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$sameAliasInvocation = $this->findByAlias($invocation->getAlias(), true); |
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if ($sameAliasInvocation !== null) { |
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trigger_error( |
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sprintf( |
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'Alias %s cannot be used by %s, used already by %s', |
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$invocation->getAlias(), |
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$invocation->getBaseName(), |
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$sameAliasInvocation->getBaseName() |
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), |
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E_USER_WARNING |
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); |
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} |
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} |
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/** |
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* @param bool $reverse |
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* @return PharInvocation[] |
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*/ |
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private function getInvocations(bool $reverse = false): array |
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{ |
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if ($reverse) { |
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return array_reverse($this->invocations); |
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} |
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return $this->invocations; |
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} |
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} |
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TYPO3 /
phar-stream-wrapper
