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