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[yaffs-website] / vendor / symfony / dependency-injection / ParameterBag / EnvPlaceholderParameterBag.php

diff --git a/vendor/symfony/dependency-injection/ParameterBag/EnvPlaceholderParameterBag.php b/vendor/symfony/dependency-injection/ParameterBag/EnvPlaceholderParameterBag.php
new file mode 100644 (file)
index 0000000..d20e535
--- /dev/null
+++ b/vendor/symfony/dependency-injection/ParameterBag/EnvPlaceholderParameterBag.php
@@ -0,0 +1,104 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\DependencyInjection\ParameterBag;
+
+use Symfony\Component\DependencyInjection\Exception\RuntimeException;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class EnvPlaceholderParameterBag extends ParameterBag
+{
+    private $envPlaceholders = array();
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get($name)
+    {
+        if (0 === strpos($name, 'env(') && ')' === substr($name, -1) && 'env()' !== $name) {
+            $env = substr($name, 4, -1);
+
+            if (isset($this->envPlaceholders[$env])) {
+                foreach ($this->envPlaceholders[$env] as $placeholder) {
+                    return $placeholder; // return first result
+                }
+            }
+            if (preg_match('/\W/', $env)) {
+                throw new InvalidArgumentException(sprintf('Invalid %s name: only "word" characters are allowed.', $name));
+            }
+
+            if ($this->has($name)) {
+                $defaultValue = parent::get($name);
+
+                if (null !== $defaultValue && !is_scalar($defaultValue)) {
+                    throw new RuntimeException(sprintf('The default value of an env() parameter must be scalar or null, but "%s" given to "%s".', gettype($defaultValue), $name));
+                }
+            }
+
+            $uniqueName = md5($name.uniqid(mt_rand(), true));
+            $placeholder = sprintf('env_%s_%s', $env, $uniqueName);
+            $this->envPlaceholders[$env][$placeholder] = $placeholder;
+
+            return $placeholder;
+        }
+
+        return parent::get($name);
+    }
+
+    /**
+     * Returns the map of env vars used in the resolved parameter values to their placeholders.
+     *
+     * @return string[][] A map of env var names to their placeholders
+     */
+    public function getEnvPlaceholders()
+    {
+        return $this->envPlaceholders;
+    }
+
+    /**
+     * Merges the env placeholders of another EnvPlaceholderParameterBag.
+     */
+    public function mergeEnvPlaceholders(self $bag)
+    {
+        if ($newPlaceholders = $bag->getEnvPlaceholders()) {
+            $this->envPlaceholders += $newPlaceholders;
+
+            foreach ($newPlaceholders as $env => $placeholders) {
+                $this->envPlaceholders[$env] += $placeholders;
+            }
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function resolve()
+    {
+        if ($this->resolved) {
+            return;
+        }
+        parent::resolve();
+
+        foreach ($this->envPlaceholders as $env => $placeholders) {
+            if (!isset($this->parameters[$name = strtolower("env($env)")])) {
+                continue;
+            }
+            if (is_numeric($default = $this->parameters[$name])) {
+                $this->parameters[$name] = (string) $default;
+            } elseif (null !== $default && !is_scalar($default)) {
+                throw new RuntimeException(sprintf('The default value of env parameter "%s" must be scalar or null, %s given.', $env, gettype($default)));
+            }
+        }
+    }
+}