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<?php |
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namespace Pheanstalk; |
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use Pheanstalk\Contract\ResponseInterface; |
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use Pheanstalk\Contract\ResponseParserInterface; |
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use Pheanstalk\Response; |
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use Pheanstalk\Response\ArrayResponse; |
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/** |
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* A response parser for commands that return a subset of YAML. |
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* |
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* Expected response is 'OK', 'NOT_FOUND' response is also handled. |
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* Parser expects either a YAML list or dictionary, depending on mode. |
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* |
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* @author Paul Annesley |
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* @package Pheanstalk |
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* @license http://www.opensource.org/licenses/mit-license.php |
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*/ |
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class YamlResponseParser implements ResponseParserInterface |
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{ |
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const MODE_LIST = 'list'; |
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const MODE_DICT = 'dict'; |
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private $mode; |
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/** |
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* @param string $mode self::MODE_* |
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*/ |
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public function __construct(string $mode) |
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{ |
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if (!in_array($mode, [self::MODE_DICT, self::MODE_LIST])) { |
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throw new \InvalidArgumentException('Invalid mode'); |
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} |
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$this->mode = $mode; |
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} |
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public function parseResponse(string $responseLine, ?string $responseData): ArrayResponse |
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{ |
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if ($responseLine == ResponseInterface::RESPONSE_NOT_FOUND) { |
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throw new Exception\ServerException(sprintf( |
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'Server reported %s', |
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$responseLine |
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)); |
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} |
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if (!preg_match('#^OK \d+$#', $responseLine)) { |
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throw new Exception\ServerException(sprintf( |
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'Unhandled response: "%s"', |
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$responseLine |
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)); |
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} |
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$lines = array_filter(explode("\n", $responseData), function($line) { |
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return !empty($line) && $line !== '---'; |
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}); |
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return $this->mode === self::MODE_LIST ? $this->parseList($lines) : $this->parseDictionary($lines); |
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} |
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private function parseList(array $lines): ArrayResponse |
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{ |
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$data = []; |
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foreach($lines as $line) { |
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if (strncmp($line, '- ', 2) !== 0) { |
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throw new Exception("YAML parse error for line: $line" . print_r($lines, true)); |
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} |
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$data[] = substr($line, 2); |
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} |
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return new ArrayResponse('OK', $data); |
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} |
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private function parseDictionary(array $lines): ArrayResponse |
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{ |
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$data = []; |
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foreach($lines as $line) { |
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if (!preg_match('#(\S+):\s*(.*)#', $line, $matches)) { |
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throw new Exception("YAML parse error for line: $line"); |
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} |
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$data[$matches[1]] = $matches[2]; |
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} |
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return new ArrayResponse('OK', $data); |
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} |
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/** |
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* Callback for array_map to process YAML lines. |
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* |
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* @param string $line |
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* |
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* @return string |
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*/ |
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private function mapYamlList(string $line):string |
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{ |
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return ltrim($line, '- '); |
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} |
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} |
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pheanstalk /
pheanstalk
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