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<?php |
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2
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/** |
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3
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* parser for PHP serialized array |
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*/ |
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namespace xKerman\Restricted; |
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7
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/** |
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* Parser for PHP serialiezed array |
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9
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*/ |
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class ArrayParser implements ParserInterface |
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11
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{ |
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/** |
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* parse given `$source` as PHP serialized array |
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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 $source) |
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1 |
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{ |
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$source->consume('a'); |
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$source->consume(':'); |
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list($length, $source) = $this->parseLength($source); |
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$result = []; |
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$source->consume(':'); |
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$source->consume('{'); |
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for ($i = 0; $i < $length; ++$i) { |
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list($key, $source) = $this->parseKey($source); |
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list($value, $source) = $this->parseValue($source); |
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$result[$key] = $value; |
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} |
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$source->consume('}'); |
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return [$result, $source]; |
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} |
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/** |
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* parse given `$source` as array length |
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* |
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* @param Source $source input |
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* @return array |
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* @throws UnserializeFailedException |
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*/ |
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14 |
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private function parseLength($source) |
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{ |
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$parser = new NumberLiteralParser(); |
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list($length, $source) = $parser->parse($source); |
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if ($length < 0) { |
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1 |
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return $source->triggerError(); |
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} |
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return [$length, $source]; |
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} |
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/** |
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* parse given `$source` as array key (s.t. integer|string) |
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* |
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* @param Source $source input |
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* @return array |
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* @throws UnserializeFailedException |
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*/ |
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5 |
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private function parseKey($source) |
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{ |
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5 |
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switch ($source->peek()) { |
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5 |
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case 'i': |
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4 |
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$parser = new IntegerParser(); |
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4 |
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break; |
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3 |
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case 's': |
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1 |
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$parser = new StringParser(); |
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1 |
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break; |
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default: |
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2 |
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return $source->triggerError(); |
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} |
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return $parser->parse($source); |
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} |
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/** |
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* parse given `$source` as array value |
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* |
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* @param Source $source input |
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* @return array |
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* @throws UnserializeFailedException |
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*/ |
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4 |
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private function parseValue($source) |
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{ |
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4 |
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$parser = new ExpressionParser(); |
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4 |
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return $parser->parse($source); |
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} |
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} |
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xKerman /
restricted-unserialize
