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<?php |
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/** |
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* parser for serialized expression |
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*/ |
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namespace xKerman\Restricted; |
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/** |
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* Parser for serialized PHP values |
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*/ |
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class ExpressionParser implements ParserInterface |
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{ |
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/** @var array $parsers parser list to use */ |
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private $parsers; |
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/** |
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* constructor |
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*/ |
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public function __construct() |
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{ |
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$this->parsers = array( |
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'N' => new NullParser(), |
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'b' => new TypeConvertParser( |
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new RegexpSubstringParser('/\Gb:[01];/', 2, 1), |
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new BooleanConverter() |
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), |
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'i' => new IntegerParser(), |
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'd' => new FloatParser(), |
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's' => new StringParser(), |
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'a' => new ArrayParser($this), |
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); |
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} |
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/** |
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* parse given `$source` as PHP serialized value |
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* |
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* @param Source $source parser input |
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* @return array |
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* @throws UnserializeFailedException |
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*/ |
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public function parse(Source $source) |
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{ |
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$parser = $this->createParser($source); |
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list($result, $source) = $parser->parse($source); |
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return array($result, $source); |
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} |
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/** |
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* create parser for given input |
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* |
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* @param Source $source input |
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* @return ParserInterface |
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* @throws UnserializeFailedException |
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*/ |
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private function createParser($source) |
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{ |
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$char = $source->peek(); |
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if (isset($this->parsers[$char])) { |
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return $this->parsers[$char]; |
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} |
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return $source->triggerError(); |
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} |
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} |
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xKerman /
restricted-unserialize
