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<?php |
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/* |
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* This file is part of the Borobudur-DependencyInjection package. |
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* |
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* (c) Hexacodelabs <http://hexacodelabs.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 Borobudur\DependencyInjection\ParameterBag; |
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use Borobudur\DependencyInjection\Exception\InvalidArgumentException; |
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use Borobudur\DependencyInjection\Exception\ParameterNotFoundException; |
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use Borobudur\DependencyInjection\ParameterBag; |
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/** |
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* @author Iqbal Maulana <[email protected]> |
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* @created 8/8/15 |
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*/ |
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class Resolver |
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{ |
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/** |
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* @var bool |
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*/ |
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private $resolved; |
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/** |
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* @var ParameterBagInterface |
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*/ |
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private $parameter; |
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/** |
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* Constructor. |
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* |
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* @param ParameterBagInterface $parameter |
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* @param bool $resolved |
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*/ |
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public function __construct(ParameterBagInterface $parameter, $resolved = false) |
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{ |
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$this->parameter = $parameter; |
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$this->resolved = (bool) $resolved; |
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} |
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/** |
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* Normalize (escape / unescape) value. |
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* |
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* @param mixed $value |
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* @param array $search |
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* @param array $replace |
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* @param array $callback |
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* |
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* @return array|mixed |
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*/ |
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private static function normalizeValue($value, $search, $replace, array $callback) |
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{ |
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if (is_string($value)) { |
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return str_replace($search, $replace, $value); |
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} |
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if (is_array($value)) { |
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return array_map($callback, $value); |
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} |
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return $value; |
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} |
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/** |
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* Resolve parameters. |
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*/ |
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public function resolve() |
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{ |
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if (true === $this->resolved) { |
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return; |
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} |
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$parameters = array(); |
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foreach ($this->parameter->all() as $name => $value) { |
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try { |
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$name = $this->resolveString($name); |
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$value = $this->resolveValue($value); |
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$parameters[$name] = $this->unescapeValue($value); |
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} catch (ParameterNotFoundException $e) { |
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$e->setSource($name); |
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throw $e; |
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} |
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} |
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$this->parameter->replace($parameters); |
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$this->resolved = true; |
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} |
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/** |
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* Resolve parameter placeholders by their values. |
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* |
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* @param mixed $value |
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* |
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* @return array|mixed |
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*/ |
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public function resolveValue($value) |
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{ |
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if (is_array($value)) { |
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$parameters = array(); |
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foreach ($value as $name => $val) { |
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$name = $this->resolveString($name); |
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$parameters[$name] = $this->resolveValue($val); |
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} |
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return $parameters; |
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} |
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if (!is_string($value)) { |
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return $value; |
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} |
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return $this->resolveString($value); |
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} |
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/** |
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* Resolve parameter inside string. |
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* |
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* @param string $value |
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* |
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* @return mixed |
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*/ |
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public function resolveString($value) |
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{ |
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if (preg_match('/^%([^%\s]+)%$/', $value, $match)) { |
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return $this->parameter->get(strtolower($match[1])); |
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} |
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return preg_replace_callback('/%%|%([^%\s]+)%/', function ($match) use ($value) { |
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if (!isset($match[1])) { |
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return '%%'; |
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} |
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return $this->resolveString($this->computeStringParameter($match[1], $value)); |
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}, $value); |
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} |
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/** |
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* Check if parameter has been resolved. |
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* |
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* @return bool |
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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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* Escape parameter value. |
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* |
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* @param mixed $value |
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* |
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* @return array|mixed |
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*/ |
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public function escapeValue($value) |
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{ |
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return self::normalizeValue($value, array('%', '@'), array('%%', '@@'), array($this, 'escapeValue')); |
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} |
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/** |
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* Un-escape parameter value. |
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* |
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* @param mixed $value |
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* |
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* @return array|mixed |
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*/ |
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public function unescapeValue($value) |
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{ |
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return self::normalizeValue($value, array('%%', '@@'), array('%', '@'), array($this, 'unescapeValue')); |
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} |
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/** |
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* Compute string parameter. |
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* |
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* @param mixed $name |
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* @param mixed $value |
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* |
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* @return string |
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*/ |
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private function computeStringParameter($name, $value) |
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{ |
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$name = strtolower($name); |
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$resolved = $this->parameter->get($name); |
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// Only scalar type can be used in string value. |
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if (!is_scalar($resolved)) { |
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throw new InvalidArgumentException(sprintf( |
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'Parameter "%s" cannot use type %s inside string value "%s".', |
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$name, |
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gettype($resolved), |
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$value |
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)); |
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} |
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return (string) $resolved; |
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} |
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} |
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borobudur-php /
borobudur-di
