comparison vendor/symfony/dependency-injection/EnvVarProcessor.php @ 14:1fec387a4317

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[e-mail]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\DependencyInjection;
+
+use Symfony\Component\Config\Util\XmlUtils;
+use Symfony\Component\DependencyInjection\Exception\EnvNotFoundException;
+use Symfony\Component\DependencyInjection\Exception\RuntimeException;
+
+/**
+ * @author Nicolas Grekas <[e-mail]>
+ */
+class EnvVarProcessor implements EnvVarProcessorInterface
+{
+    private $container;
+
+    public function __construct(ContainerInterface $container)
+    {
+        $this->container = $container;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public static function getProvidedTypes()
+    {
+        return array(
+            'base64' => 'string',
+            'bool' => 'bool',
+            'const' => 'bool|int|float|string|array',
+            'file' => 'string',
+            'float' => 'float',
+            'int' => 'int',
+            'json' => 'array',
+            'resolve' => 'string',
+            'string' => 'string',
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getEnv($prefix, $name, \Closure $getEnv)
+    {
+        $i = strpos($name, ':');
+
+        if ('file' === $prefix) {
+            if (!is_scalar($file = $getEnv($name))) {
+                throw new RuntimeException(sprintf('Invalid file name: env var "%s" is non-scalar.', $name));
+            }
+            if (!file_exists($file)) {
+                throw new RuntimeException(sprintf('Env "file:%s" not found: %s does not exist.', $name, $file));
+            }
+
+            return file_get_contents($file);
+        }
+
+        if (false !== $i || 'string' !== $prefix) {
+            if (null === $env = $getEnv($name)) {
+                return;
+            }
+        } elseif (isset($_ENV[$name])) {
+            $env = $_ENV[$name];
+        } elseif (isset($_SERVER[$name]) && 0 !== strpos($name, 'HTTP_')) {
+            $env = $_SERVER[$name];
+        } elseif (false === ($env = getenv($name)) || null === $env) { // null is a possible value because of thread safety issues
+            if (!$this->container->hasParameter("env($name)")) {
+                throw new EnvNotFoundException($name);
+            }
+
+            if (null === $env = $this->container->getParameter("env($name)")) {
+                return;
+            }
+        }
+
+        if (!is_scalar($env)) {
+            throw new RuntimeException(sprintf('Non-scalar env var "%s" cannot be cast to %s.', $name, $prefix));
+        }
+
+        if ('string' === $prefix) {
+            return (string) $env;
+        }
+
+        if ('bool' === $prefix) {
+            return (bool) self::phpize($env);
+        }
+
+        if ('int' === $prefix) {
+            if (!is_numeric($env = self::phpize($env))) {
+                throw new RuntimeException(sprintf('Non-numeric env var "%s" cannot be cast to int.', $name));
+            }
+
+            return (int) $env;
+        }
+
+        if ('float' === $prefix) {
+            if (!is_numeric($env = self::phpize($env))) {
+                throw new RuntimeException(sprintf('Non-numeric env var "%s" cannot be cast to float.', $name));
+            }
+
+            return (float) $env;
+        }
+
+        if ('const' === $prefix) {
+            if (!defined($env)) {
+                throw new RuntimeException(sprintf('Env var "%s" maps to undefined constant "%s".', $name, $env));
+            }
+
+            return constant($env);
+        }
+
+        if ('base64' === $prefix) {
+            return base64_decode($env);
+        }
+
+        if ('json' === $prefix) {
+            $env = json_decode($env, true);
+
+            if (JSON_ERROR_NONE !== json_last_error()) {
+                throw new RuntimeException(sprintf('Invalid JSON in env var "%s": '.json_last_error_msg(), $name));
+            }
+
+            if (!is_array($env)) {
+                throw new RuntimeException(sprintf('Invalid JSON env var "%s": array expected, %s given.', $name, gettype($env)));
+            }
+
+            return $env;
+        }
+
+        if ('resolve' === $prefix) {
+            return preg_replace_callback('/%%|%([^%\s]+)%/', function ($match) use ($name) {
+                if (!isset($match[1])) {
+                    return '%';
+                }
+                $value = $this->container->getParameter($match[1]);
+                if (!is_scalar($value)) {
+                    throw new RuntimeException(sprintf('Parameter "%s" found when resolving env var "%s" must be scalar, "%s" given.', $match[1], $name, gettype($value)));
+                }
+
+                return $value;
+            }, $env);
+        }
+
+        throw new RuntimeException(sprintf('Unsupported env var prefix "%s".', $prefix));
+    }
+
+    private static function phpize($value)
+    {
+        if (!class_exists(XmlUtils::class)) {
+            throw new RuntimeException('The Symfony Config component is required to cast env vars to "bool", "int" or "float".');
+        }
+
+        return XmlUtils::phpize($value);
+    }
+}