primo commit

libraries/vendor/guzzlehttp/psr7/src/MultipartStream.php

@@ -0,0 +1,165 @@
+<?php
+
+declare(strict_types=1);
+
+namespace GuzzleHttp\Psr7;
+
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * Stream that when read returns bytes for a streaming multipart or
+ * multipart/form-data stream.
+ */
+final class MultipartStream implements StreamInterface
+{
+    use StreamDecoratorTrait;
+
+    /** @var string */
+    private $boundary;
+
+    /** @var StreamInterface */
+    private $stream;
+
+    /**
+     * @param array  $elements Array of associative arrays, each containing a
+     *                         required "name" key mapping to the form field,
+     *                         name, a required "contents" key mapping to a
+     *                         StreamInterface/resource/string, an optional
+     *                         "headers" associative array of custom headers,
+     *                         and an optional "filename" key mapping to a
+     *                         string to send as the filename in the part.
+     * @param string $boundary You can optionally provide a specific boundary
+     *
+     * @throws \InvalidArgumentException
+     */
+    public function __construct(array $elements = [], ?string $boundary = null)
+    {
+        $this->boundary = $boundary ?: bin2hex(random_bytes(20));
+        $this->stream = $this->createStream($elements);
+    }
+
+    public function getBoundary(): string
+    {
+        return $this->boundary;
+    }
+
+    public function isWritable(): bool
+    {
+        return false;
+    }
+
+    /**
+     * Get the headers needed before transferring the content of a POST file
+     *
+     * @param string[] $headers
+     */
+    private function getHeaders(array $headers): string
+    {
+        $str = '';
+        foreach ($headers as $key => $value) {
+            $str .= "{$key}: {$value}\r\n";
+        }
+
+        return "--{$this->boundary}\r\n".trim($str)."\r\n\r\n";
+    }
+
+    /**
+     * Create the aggregate stream that will be used to upload the POST data
+     */
+    protected function createStream(array $elements = []): StreamInterface
+    {
+        $stream = new AppendStream();
+
+        foreach ($elements as $element) {
+            if (!is_array($element)) {
+                throw new \UnexpectedValueException('An array is expected');
+            }
+            $this->addElement($stream, $element);
+        }
+
+        // Add the trailing boundary with CRLF
+        $stream->addStream(Utils::streamFor("--{$this->boundary}--\r\n"));
+
+        return $stream;
+    }
+
+    private function addElement(AppendStream $stream, array $element): void
+    {
+        foreach (['contents', 'name'] as $key) {
+            if (!array_key_exists($key, $element)) {
+                throw new \InvalidArgumentException("A '{$key}' key is required");
+            }
+        }
+
+        $element['contents'] = Utils::streamFor($element['contents']);
+
+        if (empty($element['filename'])) {
+            $uri = $element['contents']->getMetadata('uri');
+            if ($uri && \is_string($uri) && \substr($uri, 0, 6) !== 'php://' && \substr($uri, 0, 7) !== 'data://') {
+                $element['filename'] = $uri;
+            }
+        }
+
+        [$body, $headers] = $this->createElement(
+            $element['name'],
+            $element['contents'],
+            $element['filename'] ?? null,
+            $element['headers'] ?? []
+        );
+
+        $stream->addStream(Utils::streamFor($this->getHeaders($headers)));
+        $stream->addStream($body);
+        $stream->addStream(Utils::streamFor("\r\n"));
+    }
+
+    /**
+     * @param string[] $headers
+     *
+     * @return array{0: StreamInterface, 1: string[]}
+     */
+    private function createElement(string $name, StreamInterface $stream, ?string $filename, array $headers): array
+    {
+        // Set a default content-disposition header if one was no provided
+        $disposition = self::getHeader($headers, 'content-disposition');
+        if (!$disposition) {
+            $headers['Content-Disposition'] = ($filename === '0' || $filename)
+                ? sprintf(
+                    'form-data; name="%s"; filename="%s"',
+                    $name,
+                    basename($filename)
+                )
+                : "form-data; name=\"{$name}\"";
+        }
+
+        // Set a default content-length header if one was no provided
+        $length = self::getHeader($headers, 'content-length');
+        if (!$length) {
+            if ($length = $stream->getSize()) {
+                $headers['Content-Length'] = (string) $length;
+            }
+        }
+
+        // Set a default Content-Type if one was not supplied
+        $type = self::getHeader($headers, 'content-type');
+        if (!$type && ($filename === '0' || $filename)) {
+            $headers['Content-Type'] = MimeType::fromFilename($filename) ?? 'application/octet-stream';
+        }
+
+        return [$stream, $headers];
+    }
+
+    /**
+     * @param string[] $headers
+     */
+    private static function getHeader(array $headers, string $key): ?string
+    {
+        $lowercaseHeader = strtolower($key);
+        foreach ($headers as $k => $v) {
+            if (strtolower((string) $k) === $lowercaseHeader) {
+                return $v;
+            }
+        }
+
+        return null;
+    }
+}