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<?php |
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declare(strict_types=1); |
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namespace Crossjoin\Browscap\Source\Ini; |
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use Crossjoin\Browscap\Exception\ParserRuntimeException; |
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use Crossjoin\Browscap\Exception\SourceUnavailableException; |
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use Crossjoin\Browscap\Source\DataSet; |
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/** |
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* Trait DataSetsFromContentTrait |
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* |
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* @package Crossjoin\Browscap\Source\Ini |
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* @author Christoph Ziegenberg <[email protected]> |
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* @link https://github.com/crossjoin/browscap |
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*/ |
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trait DataSetsFromContentTrait |
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{ |
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/** |
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* To be overwritten and filled with content by the class using this trait! |
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* |
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* @return \Generator |
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*/ |
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public function getContent() : \Generator |
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{ |
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yield ''; |
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} |
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/** |
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* @inheritdoc |
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* |
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* @throws ParserRuntimeException |
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* @throws SourceUnavailableException |
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*/ |
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public function getDataSets() : \Iterator |
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{ |
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$unprocessedBytes = ''; |
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foreach ($this->getContent() as $bytes) { |
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$combinedBytes = $unprocessedBytes . $bytes; |
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$patternStart = strpos($combinedBytes, '['); |
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if ($patternStart !== false) { |
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while (($nextPatternStart = strpos($combinedBytes, '[', $patternStart + 1)) !== false) { |
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$dataSet = substr($combinedBytes, $patternStart, $nextPatternStart - $patternStart); |
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yield $this->getDataSetFromString($dataSet); |
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$patternStart = $nextPatternStart; |
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$unprocessedBytes = substr($combinedBytes, $nextPatternStart); |
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} |
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} else { |
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$unprocessedBytes = $combinedBytes; |
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} |
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} |
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if (trim($unprocessedBytes) !== '') { |
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yield $this->getDataSetFromString($unprocessedBytes); |
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} |
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} |
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/** |
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* @param string $data |
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* |
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* @return DataSet |
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* @throws ParserRuntimeException |
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*/ |
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protected function getDataSetFromString(string $data) : DataSet |
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{ |
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if (strpos($data, "\n") === false) { |
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throw new ParserRuntimeException('The data could not be parsed (no pattern found).', 1459589758); |
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} |
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if (strpos($data, "\r\n") !== false) { |
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// if the source file was created under windows, replace the line endings |
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$data = str_replace("\r\n", "\n", $data); |
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} |
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// Prepare the data from the data set |
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list($pattern, $properties) = explode("\n", $data, 2); |
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$pattern = substr($pattern, 1, -1); |
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$properties = @parse_ini_string($properties); |
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if ($properties === false) { |
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throw new ParserRuntimeException( |
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"The data could not be parsed (invalid properties for pattern '$pattern').", |
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1459589759 |
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); |
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} |
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$dataSet = new DataSet($pattern); |
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$dataSet->setProperties($properties); |
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return $dataSet; |
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} |
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} |
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crossjoin /
Browscap
It is generally a best practice as it is often more readable to use concatenation instead of interpolation for variables inside strings.