292 lines
8.2 KiB
PHP
292 lines
8.2 KiB
PHP
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<?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\ParameterNotFoundException;
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use Symfony\Component\DependencyInjection\Exception\ParameterCircularReferenceException;
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use Symfony\Component\DependencyInjection\Exception\RuntimeException;
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/**
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* Holds parameters.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class ParameterBag implements ParameterBagInterface
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{
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protected $parameters = array();
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protected $resolved = false;
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/**
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* @param array $parameters An array of parameters
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*/
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public function __construct(array $parameters = array())
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{
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$this->add($parameters);
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}
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/**
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* Clears all parameters.
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*/
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public function clear()
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{
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$this->parameters = array();
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}
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/**
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* Adds parameters to the service container parameters.
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*
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* @param array $parameters An array of parameters
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*/
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public function add(array $parameters)
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{
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foreach ($parameters as $key => $value) {
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$this->parameters[strtolower($key)] = $value;
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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 all()
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{
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return $this->parameters;
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}
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/**
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* {@inheritdoc}
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*/
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public function get($name)
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{
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$name = strtolower($name);
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if (!array_key_exists($name, $this->parameters)) {
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if (!$name) {
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throw new ParameterNotFoundException($name);
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}
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$alternatives = array();
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foreach ($this->parameters as $key => $parameterValue) {
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$lev = levenshtein($name, $key);
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if ($lev <= strlen($name) / 3 || false !== strpos($key, $name)) {
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$alternatives[] = $key;
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}
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}
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$nonNestedAlternative = null;
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if (!count($alternatives) && false !== strpos($name, '.')) {
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$namePartsLength = array_map('strlen', explode('.', $name));
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$key = substr($name, 0, -1 * (1 + array_pop($namePartsLength)));
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while (count($namePartsLength)) {
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if ($this->has($key)) {
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if (is_array($this->get($key))) {
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$nonNestedAlternative = $key;
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}
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break;
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}
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$key = substr($key, 0, -1 * (1 + array_pop($namePartsLength)));
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}
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}
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throw new ParameterNotFoundException($name, null, null, null, $alternatives, $nonNestedAlternative);
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}
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return $this->parameters[$name];
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}
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/**
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* Sets a service container parameter.
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*
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* @param string $name The parameter name
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* @param mixed $value The parameter value
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*/
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public function set($name, $value)
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{
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$this->parameters[strtolower($name)] = $value;
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}
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/**
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* {@inheritdoc}
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*/
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public function has($name)
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{
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return array_key_exists(strtolower($name), $this->parameters);
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}
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/**
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* Removes a parameter.
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*
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* @param string $name The parameter name
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*/
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public function remove($name)
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{
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unset($this->parameters[strtolower($name)]);
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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 ($this->resolved) {
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return;
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}
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$parameters = array();
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foreach ($this->parameters as $key => $value) {
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try {
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$value = $this->resolveValue($value);
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$parameters[$key] = $this->unescapeValue($value);
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} catch (ParameterNotFoundException $e) {
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$e->setSourceKey($key);
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throw $e;
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}
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}
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$this->parameters = $parameters;
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$this->resolved = true;
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}
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/**
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* Replaces parameter placeholders (%name%) by their values.
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*
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* @param mixed $value A value
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* @param array $resolving An array of keys that are being resolved (used internally to detect circular references)
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*
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* @return mixed The resolved value
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*
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* @throws ParameterNotFoundException if a placeholder references a parameter that does not exist
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* @throws ParameterCircularReferenceException if a circular reference if detected
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* @throws RuntimeException when a given parameter has a type problem.
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*/
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public function resolveValue($value, array $resolving = array())
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{
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if (is_array($value)) {
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$args = array();
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foreach ($value as $k => $v) {
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$args[$this->resolveValue($k, $resolving)] = $this->resolveValue($v, $resolving);
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}
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return $args;
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}
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if (!is_string($value)) {
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return $value;
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}
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return $this->resolveString($value, $resolving);
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}
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/**
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* Resolves parameters inside a string.
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*
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* @param string $value The string to resolve
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* @param array $resolving An array of keys that are being resolved (used internally to detect circular references)
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*
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* @return string The resolved string
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*
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* @throws ParameterNotFoundException if a placeholder references a parameter that does not exist
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* @throws ParameterCircularReferenceException if a circular reference if detected
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* @throws RuntimeException when a given parameter has a type problem.
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*/
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public function resolveString($value, array $resolving = array())
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{
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// we do this to deal with non string values (Boolean, integer, ...)
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// as the preg_replace_callback throw an exception when trying
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// a non-string in a parameter value
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if (preg_match('/^%([^%\s]+)%$/', $value, $match)) {
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$key = $match[1];
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$lcKey = strtolower($key);
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if (isset($resolving[$lcKey])) {
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throw new ParameterCircularReferenceException(array_keys($resolving));
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}
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$resolving[$lcKey] = true;
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return $this->resolved ? $this->get($key) : $this->resolveValue($this->get($key), $resolving);
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}
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return preg_replace_callback('/%%|%([^%\s]+)%/', function ($match) use ($resolving, $value) {
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// skip %%
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if (!isset($match[1])) {
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return '%%';
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}
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$key = $match[1];
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$lcKey = strtolower($key);
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if (isset($resolving[$lcKey])) {
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throw new ParameterCircularReferenceException(array_keys($resolving));
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}
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$resolved = $this->get($key);
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if (!is_string($resolved) && !is_numeric($resolved)) {
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throw new RuntimeException(sprintf('A string value must be composed of strings and/or numbers, but found parameter "%s" of type %s inside string value "%s".', $key, gettype($resolved), $value));
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}
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$resolved = (string) $resolved;
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$resolving[$lcKey] = true;
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return $this->isResolved() ? $resolved : $this->resolveString($resolved, $resolving);
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}, $value);
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}
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public function isResolved()
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{
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return $this->resolved;
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}
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/**
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* {@inheritdoc}
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*/
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public function escapeValue($value)
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{
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if (is_string($value)) {
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return str_replace('%', '%%', $value);
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}
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if (is_array($value)) {
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$result = array();
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foreach ($value as $k => $v) {
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$result[$k] = $this->escapeValue($v);
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}
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return $result;
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}
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return $value;
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}
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/**
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* {@inheritdoc}
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*/
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public function unescapeValue($value)
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{
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if (is_string($value)) {
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return str_replace('%%', '%', $value);
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}
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if (is_array($value)) {
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$result = array();
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foreach ($value as $k => $v) {
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$result[$k] = $this->unescapeValue($v);
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}
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return $result;
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}
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return $value;
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}
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}
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