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msd2/phpBB3/vendor/symfony/dependency-injection/ParameterBag/ParameterBag.php

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