Simplify PSR-4 autoload

classes/Stream/YoutubeChunkStream.php

@@ -0,0 +1,197 @@
+<?php
+
+/**
+ * YoutubeChunkStream class.
+ */
+
+namespace Alltube\Stream;
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * This is a wrapper around GuzzleHttp\Psr7\Stream.
+ * It is required because Youtube HTTP responses are buggy if we try to read further than the end of the response.
+ */
+class YoutubeChunkStream implements StreamInterface
+{
+    /**
+     * HTTP response containing the video chunk.
+     *
+     * @var ResponseInterface
+     */
+    private $response;
+
+    /**
+     * YoutubeChunkStream constructor.
+     *
+     * @param ResponseInterface $response HTTP response containing the video chunk
+     */
+    public function __construct(ResponseInterface $response)
+    {
+        $this->response = $response;
+    }
+
+    /**
+     * Read data from the stream.
+     *
+     * @param int $length Read up to $length bytes from the object and return
+     *
+     * @return string
+     */
+    public function read($length)
+    {
+        $size = intval($this->response->getHeader('Content-Length')[0]);
+        if ($size - $this->tell() < $length) {
+            // Don't try to read further than the end of the stream.
+            $length = $size - $this->tell();
+        }
+
+        return $this->response->getBody()->read($length);
+    }
+
+    /**
+     * Reads all data from the stream into a string, from the beginning to end.
+     */
+    public function __toString()
+    {
+        return (string)$this->response->getBody();
+    }
+
+    /**
+     * Closes the stream and any underlying resources.
+     *
+     * @return void
+     */
+    public function close()
+    {
+        $this->response->getBody()->close();
+    }
+
+    /**
+     * Separates any underlying resources from the stream.
+     *
+     * @return resource|null
+     */
+    public function detach()
+    {
+        return $this->response->getBody()->detach();
+    }
+
+    /**
+     * Get the size of the stream if known.
+     *
+     * @return int|null
+     */
+    public function getSize()
+    {
+        return $this->response->getBody()->getSize();
+    }
+
+    /**
+     * Returns the current position of the file read/write pointer.
+     *
+     * @return int
+     */
+    public function tell()
+    {
+        return $this->response->getBody()->tell();
+    }
+
+    /**
+     * Returns true if the stream is at the end of the stream.
+     *
+     * @return bool
+     */
+    public function eof()
+    {
+        return $this->response->getBody()->eof();
+    }
+
+    /**
+     * Returns whether or not the stream is seekable.
+     *
+     * @return bool
+     */
+    public function isSeekable()
+    {
+        return $this->response->getBody()->isSeekable();
+    }
+
+    /**
+     * Seek to a position in the stream.
+     *
+     * @param int $offset Stream offset
+     * @param int $whence Specifies how the cursor position will be calculated
+     *
+     * @return void
+     */
+    public function seek($offset, $whence = SEEK_SET)
+    {
+        $this->response->getBody()->seek($offset, $whence);
+    }
+
+    /**
+     * Seek to the beginning of the stream.
+     *
+     * @return void
+     */
+    public function rewind()
+    {
+        $this->response->getBody()->rewind();
+    }
+
+    /**
+     * Returns whether or not the stream is writable.
+     *
+     * @return bool
+     */
+    public function isWritable()
+    {
+        return $this->response->getBody()->isWritable();
+    }
+
+    /**
+     * Write data to the stream.
+     *
+     * @param string $string The string that is to be written
+     *
+     * @return mixed
+     */
+    public function write($string)
+    {
+        return $this->response->getBody()->write($string);
+    }
+
+    /**
+     * Returns whether or not the stream is readable.
+     *
+     * @return bool
+     */
+    public function isReadable()
+    {
+        return $this->response->getBody()->isReadable();
+    }
+
+    /**
+     * Returns the remaining contents in a string.
+     *
+     * @return string
+     */
+    public function getContents()
+    {
+        return $this->response->getBody()->getContents();
+    }
+
+    /**
+     * Get stream metadata as an associative array or retrieve a specific key.
+     *
+     * @param string $key Specific metadata to retrieve.
+     *
+     * @return array|mixed|null
+     */
+    public function getMetadata($key = null)
+    {
+        return $this->response->getBody()->getMetadata($key);
+    }
+}