<?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\InvalidArgumentException;
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
/**
* @author Nicolas Grekas <p@tchwork.com>
*/
class EnvPlaceholderParameterBag extends ParameterBag
{
private $envPlaceholders = [];
private $providedTypes = [];
/**
* {@inheritdoc}
*/
public function get($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 $placeholder; // return first result
}
}
if (!preg_match('/^(?:\w++:)*+\w++$/', $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', str_replace(':', '_', $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;
}
}
}
/**
* Maps env prefixes to their corresponding PHP types.
*/
public function setProvidedTypes(array $providedTypes)
{
$this->providedTypes = $providedTypes;
}
/**
* Gets the PHP types corresponding to env() parameter prefixes.
*
* @return string[][]
*/
public function getProvidedTypes()
{
return $this->providedTypes;
}
/**
* {@inheritdoc}
*/
public function resolve()
{
if ($this->resolved) {
return;
}
parent::resolve();
foreach ($this->envPlaceholders as $env => $placeholders) {
if (!$this->has($name = "env($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)));
}
}
}
}