updated packages

vendor/vlucas/phpdotenv/src/Environment/DotenvVariables.php

@@ -0,0 +1,109 @@
+<?php
+
+namespace Dotenv\Environment;
+
+use InvalidArgumentException;
+
+/**
+ * The default implementation of the environment variables interface.
+ */
+class DotenvVariables extends AbstractVariables
+{
+    /**
+     * The set of adapters to use.
+     *
+     * @var \Dotenv\Environment\Adapter\AdapterInterface[]
+     */
+    protected $adapters;
+
+    /**
+     * Create a new dotenv environment variables instance.
+     *
+     * @param \Dotenv\Environment\Adapter\AdapterInterface[] $adapters
+     * @param bool                                           $immutable
+     *
+     * @return void
+     */
+    public function __construct(array $adapters, $immutable)
+    {
+        $this->adapters = $adapters;
+        parent::__construct($immutable);
+    }
+
+    /**
+     * Get an environment variable.
+     *
+     * We do this by querying our adapters sequentially.
+     *
+     * @param string $name
+     *
+     * @throws \InvalidArgumentException
+     *
+     * @return string|null
+     */
+    public function get($name)
+    {
+        if (!is_string($name)) {
+            throw new InvalidArgumentException('Expected name to be a string.');
+        }
+
+        foreach ($this->adapters as $adapter) {
+            $result = $adapter->get($name);
+            if ($result->isDefined()) {
+                return $result->get();
+            }
+        }
+    }
+
+    /**
+     * Set an environment variable.
+     *
+     * @param string      $name
+     * @param string|null $value
+     *
+     * @throws \InvalidArgumentException
+     *
+     * @return void
+     */
+    public function set($name, $value = null)
+    {
+        if (!is_string($name)) {
+            throw new InvalidArgumentException('Expected name to be a string.');
+        }
+
+        // Don't overwrite existing environment variables if we're immutable
+        // Ruby's dotenv does this with `ENV[key] ||= value`.
+        if ($this->isImmutable() && $this->get($name) !== null) {
+            return;
+        }
+
+        foreach ($this->adapters as $adapter) {
+            $adapter->set($name, $value);
+        }
+    }
+
+    /**
+     * Clear an environment variable.
+     *
+     * @param string $name
+     *
+     * @throws \InvalidArgumentException
+     *
+     * @return void
+     */
+    public function clear($name)
+    {
+        if (!is_string($name)) {
+            throw new InvalidArgumentException('Expected name to be a string.');
+        }
+
+        // Don't clear anything if we're immutable.
+        if ($this->isImmutable()) {
+            return;
+        }
+
+        foreach ($this->adapters as $adapter) {
+            $adapter->clear($name);
+        }
+    }
+}