当前路径:vendor/guzzlehttp/psr7/src/FnStream.php <?php namespace GuzzleHttp\Psr7; use Psr\Http\Message\StreamInterface; /** * Compose stream implementations based on a hash of functions. * * Allows for easy testing and extension of a provided stream without needing * to create a concrete class for a simple extension point. */ class FnStream implements StreamInterface { /** @var array */ private $methods; /** @var array Methods that must be implemented in the given array */ private static $slots = ['__toString', 'close', 'detach', 'rewind', 'getSize', 'tell', 'eof', 'isSeekable', 'seek', 'isWritable', 'write', 'isReadable', 'read', 'getContents', 'getMetadata']; /** * @param array $methods Hash of method name to a callable. */ public function __construct(array $methods) { $this->methods = $methods; // Create the functions on the class foreach ($methods as $name => $fn) { $this->{'_fn_' . $name} = $fn; } } /** * Lazily determine which methods are not implemented. * * @throws \BadMethodCallException */ public function __get($name) { throw new \BadMethodCallException(str_replace('_fn_', '', $name) . '() is not implemented in the FnStream'); } /** * The close method is called on the underlying stream only if possible. */ public function __destruct() { if (isset($this->_fn_close)) { call_user_func($this->_fn_close); } } /** * An unserialize would allow the __destruct to run when the unserialized value goes out of scope. * @throws \LogicException */ public function __wakeup() { throw new \LogicException('FnStream should never be unserialized'); } /** * Adds custom functionality to an underlying stream by intercepting * specific method calls. * * @param StreamInterface $stream Stream to decorate * @param array $methods Hash of method name to a closure * * @return FnStream */ public static function decorate(StreamInterface $stream, array $methods) { // If any of the required methods were not provided, then simply // proxy to the decorated stream. foreach (array_diff(self::$slots, array_keys($methods)) as $diff) { $methods[$diff] = [$stream, $diff]; } return new self($methods); } public function __toString() { return call_user_func($this->_fn___toString); } public function close() { return call_user_func($this->_fn_close); } public function detach() { return call_user_func($this->_fn_detach); } public function getSize() { return call_user_func($this->_fn_getSize); } public function tell() { return call_user_func($this->_fn_tell); } public function eof() { return call_user_func($this->_fn_eof); } public function isSeekable() { return call_user_func($this->_fn_isSeekable); } public function rewind() { call_user_func($this->_fn_rewind); } public function seek($offset, $whence = SEEK_SET) { call_user_func($this->_fn_seek, $offset, $whence); } public function isWritable() { return call_user_func($this->_fn_isWritable); } public function write($string) { return call_user_func($this->_fn_write, $string); } public function isReadable() { return call_user_func($this->_fn_isReadable); } public function read($length) { return call_user_func($this->_fn_read, $length); } public function getContents() { return call_user_func($this->_fn_getContents); } public function getMetadata($key = null) { return call_user_func($this->_fn_getMetadata, $key); } }
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51Aspx.com 版权所有 CopyRight © 2006-2022. 京ICP备09089570号 | 京公网安备11010702000869号