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<?php namespace GuzzleHttp\Psr7;
use Psr\Http\Message\StreamInterface;
/** * Lazily reads or writes to a file that is opened only after an IO operation * take place on the stream. */ class LazyOpenStream implements StreamInterface { use StreamDecoratorTrait;
/** @var string File to open */ private $filename;
/** @var string $mode */ private $mode;
/** * @param string $filename File to lazily open * @param string $mode fopen mode to use when opening the stream */ public function __construct($filename, $mode) { $this->filename = $filename; $this->mode = $mode; }
/** * Creates the underlying stream lazily when required. * * @return StreamInterface */ protected function createStream() { return stream_for(try_fopen($this->filename, $this->mode)); } }
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