feat: add stream factory

Author: wazabii8

src/StreamFactory.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace MaplePHP\Http;
+
+
+use Psr\Http\Message\StreamFactoryInterface;
+use Psr\Http\Message\StreamInterface;
+use RuntimeException;
+
+class StreamFactory implements StreamFactoryInterface
+{
+    public function createStream(string $content = ''): StreamInterface
+    {
+        $stream = new Stream(Stream::TEMP);
+        if ($content !== '') {
+            $stream->write($content);
+        }
+        return $stream;
+    }
+
+    public function createStreamFromFile(string $filename, string $mode = 'r'): StreamInterface
+    {
+        $stream = new Stream($filename, $mode);
+        // PSR-17: MUST throw RuntimeException if the file cannot be opened.
+        if (!is_resource($stream->getResource())) {
+            throw new RuntimeException(sprintf('Unable to open file "%s" with mode "%s".', $filename, $mode));
+        }
+        return $stream;
+    }
+
+    public function createStreamFromResource($resource): StreamInterface
+    {
+        // PSR-17: MUST throw InvalidArgumentException if $resource is not a resource.
+        if (!is_resource($resource)) {
+            throw new \InvalidArgumentException('StreamFactory::createStreamFromResource() expects a resource.');
+        }
+        return new Stream($resource);
+    }
+
+}