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<?php declare(strict_types=1); |
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namespace One\Http; |
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use Psr\Http\Message\StreamInterface; |
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/** |
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* @property string $_fn___toString Contains function name as value |
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* @property string $_fn_close Contains function name as value |
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* @property string $_fn_detach Contains function name as value |
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* @property string $_fn_rewind Contains function name as value |
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* @property string $_fn_getSize Contains function name as value |
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* @property string $_fn_tell Contains function name as value |
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* @property string $_fn_eof Contains function name as value |
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* @property string $_fn_isSeekable Contains function name as value |
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* @property string $_fn_seek Contains function name as value |
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* @property string $_fn_isWritable Contains function name as value |
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* @property string $_fn_write Contains function name as value |
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* @property string $_fn_isReadable Contains function name as value |
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* @property string $_fn_read Contains function name as value |
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* @property string $_fn_getContents Contains function name as value |
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* @property string $_fn_getMetadata Contains function name as value |
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* @property string[] $slots An array that store list of function name |
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*/ |
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class FnStream implements StreamInterface |
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{ |
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/** |
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* Slots |
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* @var array<string> |
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*/ |
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private static $slots = ['__toString', 'close', 'detach', 'rewind', |
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'getSize', 'tell', 'eof', 'isSeekable', 'seek', 'isWritable', 'write', |
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'isReadable', 'read', 'getContents', 'getMetadata', ]; |
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/** |
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* @param array $methods Hash of method name to a callable. |
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*/ |
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public function __construct(array $methods) |
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{ |
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// Create the functions on the class |
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foreach ($methods as $name => $fn) { |
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$this->{'_fn_' . $name} = $fn; |
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} |
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} |
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/** |
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* The close method is called on the underlying stream only if possible. |
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*/ |
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public function __destruct() |
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{ |
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if (isset($this->_fn_close)) { |
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call_user_func($this->_fn_close); |
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} |
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} |
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/** |
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* Lazily determine which methods are not implemented. |
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* @throws \BadMethodCallException |
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*/ |
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public function __get(string $name): void |
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{ |
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throw new \BadMethodCallException(str_replace('_fn_', '', $name) |
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. '() is not implemented in the FnStream'); |
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} |
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/** |
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* An unserialize would allow the __destruct to run when the unserialized value goes out of scope. |
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* @throws \LogicException |
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*/ |
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public function __wakeup(): void |
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{ |
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throw new \LogicException('FnStream should never be unserialized'); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function __toString() |
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{ |
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return call_user_func($this->_fn___toString); |
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} |
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/** |
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* Adds custom functionality to an underlying stream by intercepting |
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* specific method calls. |
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* |
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* @param StreamInterface $stream Stream to decorate |
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* @param array $methods Hash of method name to a closure |
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*/ |
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public static function decorate(StreamInterface $stream, array $methods): self |
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{ |
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// If any of the required methods were not provided, then simply |
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// proxy to the decorated stream. |
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foreach (array_diff(self::$slots, array_keys($methods)) as $diff) { |
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$methods[$diff] = [$stream, $diff]; |
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} |
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return new self($methods); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function close() |
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{ |
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return call_user_func($this->_fn_close); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function detach() |
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{ |
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return call_user_func($this->_fn_detach); |
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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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return call_user_func($this->_fn_getSize); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function tell() |
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{ |
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return call_user_func($this->_fn_tell); |
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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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return call_user_func($this->_fn_eof); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function isSeekable() |
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{ |
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return call_user_func($this->_fn_isSeekable); |
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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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call_user_func($this->_fn_rewind); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function seek($offset, $whence = SEEK_SET): void |
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{ |
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call_user_func($this->_fn_seek, $offset, $whence); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function isWritable() |
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{ |
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return call_user_func($this->_fn_isWritable); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function write($string) |
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{ |
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return call_user_func($this->_fn_write, $string); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function isReadable() |
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{ |
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return call_user_func($this->_fn_isReadable); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function read($length) |
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{ |
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return call_user_func($this->_fn_read, $length); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getContents() |
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{ |
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return call_user_func($this->_fn_getContents); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getMetadata($key = null) |
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{ |
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return call_user_func($this->_fn_getMetadata, $key); |
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} |
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} |
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KLYgarage /
onesdk
