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Revision Autor Zeilennr. Zeile
148 lars 1 
<?php
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declare(strict_types=1);
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namespace Dotenv\Repository\Adapter;
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final class GuardedWriter implements WriterInterface
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{
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    /**
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     * The inner writer to use.
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     *
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     * @var \Dotenv\Repository\Adapter\WriterInterface
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     */
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    private $writer;
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    /**
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     * The variable name allow list.
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     *
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     * @var string[]
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     */
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    private $allowList;
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    /**
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     * Create a new guarded writer instance.
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     *
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     * @param \Dotenv\Repository\Adapter\WriterInterface $writer
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     * @param string[]                                   $allowList
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     *
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     * @return void
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     */
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    public function __construct(WriterInterface $writer, array $allowList)
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    {
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        $this->writer = $writer;
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        $this->allowList = $allowList;
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    }
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    /**
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     * Write to an environment variable, if possible.
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     *
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     * @param non-empty-string $name
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     * @param string           $value
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     *
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     * @return bool
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     */
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    public function write(string $name, string $value)
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    {
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        // Don't set non-allowed variables
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        if (!$this->isAllowed($name)) {
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            return false;
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        }
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        // Set the value on the inner writer
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        return $this->writer->write($name, $value);
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    }
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    /**
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     * Delete an environment variable, if possible.
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     *
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     * @param non-empty-string $name
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     *
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     * @return bool
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     */
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    public function delete(string $name)
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    {
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        // Don't clear non-allowed variables
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        if (!$this->isAllowed($name)) {
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            return false;
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        }
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        // Set the value on the inner writer
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        return $this->writer->delete($name);
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    }
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    /**
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     * Determine if the given variable is allowed.
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     *
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     * @param non-empty-string $name
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     *
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     * @return bool
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     */
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    private function isAllowed(string $name)
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    {
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        return \in_array($name, $this->allowList, true);
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    }
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}