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