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<?php declare(strict_types=1); |
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namespace One\Http; |
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class Stream implements \Psr\Http\Message\StreamInterface |
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{ |
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/** |
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* Stream |
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* @var \Psr\Http\Message\StreamInterface |
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*/ |
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private $stream; |
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/** |
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* Size |
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* @var int |
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*/ |
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private $size; |
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/** |
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* Seekable |
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* @var bool |
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*/ |
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private $seekable; |
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/** |
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* Readable |
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* @var bool |
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*/ |
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private $readable; |
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/** |
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* Writeable |
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* @var bool |
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*/ |
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private $writable; |
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/** |
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* uri |
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* @var \One\Uri |
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*/ |
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private $uri; |
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/** |
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* Custom meta data |
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* @var mixed |
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*/ |
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private $customMetadata; |
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/** |
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* array Hash of readable and writable stream types |
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* @var array<string[]> |
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*/ |
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private static $readWriteHash = [ |
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'read' => [ |
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'r' => true, 'w+' => true, 'r+' => true, 'x+' => true, 'c+' => true, |
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'rb' => true, 'w+b' => true, 'r+b' => true, 'x+b' => true, |
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'c+b' => true, 'rt' => true, 'w+t' => true, 'r+t' => true, |
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'x+t' => true, 'c+t' => true, 'a+' => true, |
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], |
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'write' => [ |
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'w' => true, 'w+' => true, 'rw' => true, 'r+' => true, 'x+' => true, |
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'c+' => true, 'wb' => true, 'w+b' => true, 'r+b' => true, |
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'x+b' => true, 'c+b' => true, 'w+t' => true, 'r+t' => true, |
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'x+t' => true, 'c+t' => true, 'a' => true, 'a+' => true, |
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], |
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]; |
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/** |
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* This constructor accepts an associative array of options. |
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* |
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* - size: (int) If a read stream would otherwise have an indeterminate |
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* size, but the size is known due to foreknowledge, then you can |
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* provide that size, in bytes. |
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* - metadata: (array) Any additional metadata to return when the metadata |
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* of the stream is accessed. |
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* |
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* @param bool|resource $stream Stream resource to wrap. |
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* @param array $options Associative array of options. |
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* |
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* @throws \InvalidArgumentException if the stream is not a stream resource |
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*/ |
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public function __construct($stream, $options = []) |
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{ |
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if (! is_resource($stream)) { |
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throw new \InvalidArgumentException('Stream must be a resource'); |
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} |
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if (isset($options['size'])) { |
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$this->size = $options['size']; |
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} |
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$this->customMetadata = $options['metadata'] |
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?? []; |
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$this->stream = $stream; |
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$meta = stream_get_meta_data($this->stream); |
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$this->seekable = $meta['seekable']; |
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$this->readable = isset(self::$readWriteHash['read'][$meta['mode']]); |
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$this->writable = isset(self::$readWriteHash['write'][$meta['mode']]); |
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$this->uri = $this->getMetadata('uri'); |
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} |
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/** |
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* Closes the stream when the destructed |
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*/ |
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public function __destruct() |
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{ |
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$this->close(); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function __toString() |
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{ |
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try { |
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$this->seek(0); |
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return (string) stream_get_contents($this->stream); |
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} catch (\Throwable $e) { |
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return ''; |
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} |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getContents() |
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{ |
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if (! isset($this->stream)) { |
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throw new \RuntimeException('Stream is detached'); |
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} |
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$contents = stream_get_contents($this->stream); |
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if ($contents === false) { |
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throw new \RuntimeException('Unable to read stream contents'); |
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} |
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return $contents; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function close(): void |
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{ |
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if (isset($this->stream)) { |
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if (is_resource($this->stream)) { |
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fclose($this->stream); |
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} |
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$this->detach(); |
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} |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function detach() |
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{ |
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if (! isset($this->stream)) { |
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return null; |
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} |
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$result = $this->stream; |
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unset($this->stream); |
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$this->size = $this->uri = null; |
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$this->readable = $this->writable = $this->seekable = false; |
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return $result; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getSize() |
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{ |
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if ($this->size !== null) { |
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return $this->size; |
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} |
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if (! isset($this->stream)) { |
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return null; |
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} |
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// Clear the stat cache if the stream has a URI |
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if ($this->uri) { |
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clearstatcache(true, $this->uri); |
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} |
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$stats = fstat($this->stream); |
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if (isset($stats['size'])) { |
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$this->size = $stats['size']; |
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return $this->size; |
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} |
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return null; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function isReadable() |
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{ |
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return $this->readable; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function isWritable() |
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{ |
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return $this->writable; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function isSeekable() |
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{ |
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return $this->seekable; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function eof() |
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{ |
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if (! isset($this->stream)) { |
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throw new \RuntimeException('Stream is detached'); |
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} |
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return feof($this->stream); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function tell() |
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{ |
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if (! isset($this->stream)) { |
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throw new \RuntimeException('Stream is detached'); |
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} |
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$result = ftell($this->stream); |
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if ($result === false) { |
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throw new \RuntimeException('Unable to determine stream position'); |
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} |
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return $result; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function rewind(): void |
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{ |
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$this->seek(0); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function seek($offset, $whence = SEEK_SET): void |
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{ |
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if (! isset($this->stream)) { |
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throw new \RuntimeException('Stream is detached'); |
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} |
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if (! $this->seekable) { |
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throw new \RuntimeException('Stream is not seekable'); |
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} |
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if (fseek($this->stream, $offset, $whence) === -1) { |
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throw new \RuntimeException('Unable to seek to stream position ' |
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. $offset . ' with whence ' . var_export($whence, true)); |
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} |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function read($length) |
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{ |
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if (! isset($this->stream)) { |
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throw new \RuntimeException('Stream is detached'); |
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} |
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if (! $this->readable) { |
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throw new \RuntimeException('Cannot read from non-readable stream'); |
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} |
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if ($length < 0) { |
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throw new \RuntimeException('Length parameter cannot be negative'); |
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} |
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if ($length === 0) { |
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return ''; |
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} |
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$string = fread($this->stream, $length); |
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if ($string === false) { |
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throw new \RuntimeException('Unable to read from stream'); |
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} |
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return $string; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function write($string) |
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{ |
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if (! isset($this->stream)) { |
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throw new \RuntimeException('Stream is detached'); |
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} |
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if (! $this->writable) { |
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throw new \RuntimeException('Cannot write to a non-writable stream'); |
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} |
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// We can't know the size after writing anything |
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$this->size = null; |
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$result = fwrite($this->stream, $string); |
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if ($result === false) { |
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throw new \RuntimeException('Unable to write to stream'); |
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} |
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return $result; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getMetadata($key = null) |
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{ |
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if (! isset($this->stream)) { |
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return $key ? null : []; |
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} elseif (! $key) { |
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return $this->customMetadata + stream_get_meta_data($this->stream); |
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} elseif (isset($this->customMetadata[$key])) { |
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return $this->customMetadata[$key]; |
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} |
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$meta = stream_get_meta_data($this->stream); |
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return $meta[$key] ?? null; |
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} |
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} |
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Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..