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<?php |
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declare(strict_types=1); |
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namespace JsonDecodeStream\Source; |
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use JsonDecodeStream\Exception\SourceException; |
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class StreamSource implements SourceInterface |
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{ |
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/** @var resource */ |
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protected $stream; |
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/** |
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* StreamSource constructor. |
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* @param $stream |
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* @throws SourceException |
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*/ |
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public function __construct($stream) |
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{ |
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if (!is_resource($stream)) { |
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1 |
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throw new SourceException('Argument is not a resource'); |
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} |
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$this->stream = $stream; |
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} |
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public function isEof(): bool |
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{ |
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return feof($this->stream); |
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} |
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public function read(int $bytes): string |
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{ |
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try { |
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$read = fread($this->stream, $bytes); |
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if ($read === false) { |
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$error = error_get_last(); |
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throw new \RuntimeException($error ? $error['message'] : 'fread error'); |
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} |
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} catch (\Throwable $e) { |
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throw new SourceException('Cound not read from stream', 0, $e); |
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} |
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return $read; |
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} |
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public function rewind(): void |
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{ |
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try { |
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$tell = ftell($this->stream); |
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if ($tell === false) { |
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$error = error_get_last(); |
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throw new \RuntimeException($error ? $error['message'] : 'ftell error'); |
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} |
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57 |
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if ($tell === 0) { |
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return; |
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} |
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3 |
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$streamMetaData = stream_get_meta_data($this->stream); |
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if (!$streamMetaData['seekable']) { |
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throw new SourceException('This stream is not seekable, can not rewind after data was read'); |
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} |
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$seek = fseek($this->stream, 0, SEEK_SET); |
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if ($seek === -1) { |
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$error = error_get_last(); |
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throw new \RuntimeException($error ? $error['message'] : 'fseek error'); |
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} |
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1 |
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} catch (\Throwable $e) { |
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throw new SourceException('Cound not seek the stream', 0, $e); |
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} |
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} |
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} |
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klkvsk /
json-decode-stream
