105 lines
3.2 KiB
PHP
105 lines
3.2 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\ParameterBag;
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use Symfony\Component\DependencyInjection\Exception\RuntimeException;
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use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
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/**
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* @author Nicolas Grekas <p@tchwork.com>
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*/
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class EnvPlaceholderParameterBag extends ParameterBag
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{
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private $envPlaceholders = array();
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/**
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* {@inheritdoc}
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*/
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public function get($name)
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{
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if (0 === strpos($name, 'env(') && ')' === substr($name, -1) && 'env()' !== $name) {
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$env = substr($name, 4, -1);
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if (isset($this->envPlaceholders[$env])) {
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foreach ($this->envPlaceholders[$env] as $placeholder) {
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return $placeholder; // return first result
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}
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}
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if (preg_match('/\W/', $env)) {
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throw new InvalidArgumentException(sprintf('Invalid %s name: only "word" characters are allowed.', $name));
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}
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if ($this->has($name)) {
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$defaultValue = parent::get($name);
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if (null !== $defaultValue && !is_scalar($defaultValue)) {
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throw new RuntimeException(sprintf('The default value of an env() parameter must be scalar or null, but "%s" given to "%s".', gettype($defaultValue), $name));
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}
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}
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$uniqueName = md5($name.uniqid(mt_rand(), true));
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$placeholder = sprintf('env_%s_%s', $env, $uniqueName);
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$this->envPlaceholders[$env][$placeholder] = $placeholder;
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return $placeholder;
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}
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return parent::get($name);
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}
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/**
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* Returns the map of env vars used in the resolved parameter values to their placeholders.
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*
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* @return string[][] A map of env var names to their placeholders
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*/
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public function getEnvPlaceholders()
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{
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return $this->envPlaceholders;
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}
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/**
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* Merges the env placeholders of another EnvPlaceholderParameterBag.
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*/
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public function mergeEnvPlaceholders(self $bag)
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{
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if ($newPlaceholders = $bag->getEnvPlaceholders()) {
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$this->envPlaceholders += $newPlaceholders;
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foreach ($newPlaceholders as $env => $placeholders) {
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$this->envPlaceholders[$env] += $placeholders;
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}
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function resolve()
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{
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if ($this->resolved) {
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return;
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}
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parent::resolve();
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foreach ($this->envPlaceholders as $env => $placeholders) {
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if (!isset($this->parameters[$name = strtolower("env($env)")])) {
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continue;
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}
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if (is_numeric($default = $this->parameters[$name])) {
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$this->parameters[$name] = (string) $default;
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} elseif (null !== $default && !is_scalar($default)) {
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throw new RuntimeException(sprintf('The default value of env parameter "%s" must be scalar or null, %s given.', $env, gettype($default)));
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}
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}
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}
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}
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