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📁 ..
📄 AppendStream.php(5.81 KB)
📄 BufferStream.php(3.14 KB)
📄 CachingStream.php(4.49 KB)
📄 DroppingStream.php(1.17 KB)
📁 Exception
📄 FnStream.php(4.21 KB)
📄 Header.php(3.85 KB)
📄 HttpFactory.php(3 KB)
📄 InflateStream.php(1.38 KB)
📄 LazyOpenStream.php(1.06 KB)
📄 LimitStream.php(4.2 KB)
📄 Message.php(8.14 KB)
📄 MessageTrait.php(7.56 KB)
📄 MimeType.php(53.75 KB)
📄 MultipartStream.php(5.06 KB)
📄 NoSeekStream.php(524 B)
📄 PumpStream.php(4.49 KB)
📄 Query.php(3.95 KB)
📄 Request.php(3.82 KB)
📄 Response.php(4.79 KB)
📄 Rfc7230.php(661 B)
📄 ServerRequest.php(9.33 KB)
📄 Stream.php(7.21 KB)
📄 StreamDecoratorTrait.php(3.24 KB)
📄 StreamWrapper.php(4.53 KB)
📄 UploadedFile.php(4.98 KB)
📄 Uri.php(21.44 KB)
📄 UriComparator.php(1.12 KB)
📄 UriNormalizer.php(8.26 KB)
📄 UriResolver.php(8.38 KB)
📄 Utils.php(15.57 KB)

Editing: AppendStream.php

<?php

declare(strict_types=1);

namespace GuzzleHttp\Psr7;

use Psr\Http\Message\StreamInterface;

/**
 * Reads from multiple streams, one after the other.
 *
 * This is a read-only stream decorator.
 */
final class AppendStream implements StreamInterface
{
    /** @var StreamInterface[] Streams being decorated */
    private $streams = [];

/** @var bool */
    private $seekable = true;

/** @var int */
    private $current = 0;

/** @var int */
    private $pos = 0;

/**
     * @param StreamInterface[] $streams Streams to decorate. Each stream must
     *                                   be readable.
     */
    public function __construct(array $streams = [])
    {
        foreach ($streams as $stream) {
            $this->addStream($stream);
        }
    }

public function __toString(): string
    {
        try {
            $this->rewind();

return $this->getContents();
        } catch (\Throwable $e) {
            if (\PHP_VERSION_ID >= 70400) {
                throw $e;
            }
            trigger_error(sprintf('%s::__toString exception: %s', self::class, (string) $e), E_USER_ERROR);

return '';
        }
    }

/**
     * Add a stream to the AppendStream
     *
     * @param StreamInterface $stream Stream to append. Must be readable.
     *
     * @throws \InvalidArgumentException if the stream is not readable
     */
    public function addStream(StreamInterface $stream): void
    {
        if (!$stream->isReadable()) {
            throw new \InvalidArgumentException('Each stream must be readable');
        }

// The stream is only seekable if all streams are seekable
        if (!$stream->isSeekable()) {
            $this->seekable = false;
        }

$this->streams[] = $stream;
    }

public function getContents(): string
    {
        return Utils::copyToString($this);
    }

/**
     * Closes each attached stream.
     */
    public function close(): void
    {
        $this->pos = $this->current = 0;
        $this->seekable = true;

foreach ($this->streams as $stream) {
            $stream->close();
        }

$this->streams = [];
    }

/**
     * Detaches each attached stream.
     *
     * Returns null as it's not clear which underlying stream resource to return.
     */
    public function detach()
    {
        $this->pos = $this->current = 0;
        $this->seekable = true;

foreach ($this->streams as $stream) {
            $stream->detach();
        }

$this->streams = [];

return null;
    }

public function tell(): int
    {
        return $this->pos;
    }

/**
     * Tries to calculate the size by adding the size of each stream.
     *
     * If any of the streams do not return a valid number, then the size of the
     * append stream cannot be determined and null is returned.
     */
    public function getSize(): ?int
    {
        $size = 0;

foreach ($this->streams as $stream) {
            $s = $stream->getSize();
            if ($s === null) {
                return null;
            }
            $size += $s;
        }

return $size;
    }

public function eof(): bool
    {
        return !$this->streams
            || ($this->current >= count($this->streams) - 1
             && $this->streams[$this->current]->eof());
    }

public function rewind(): void
    {
        $this->seek(0);
    }

/**
     * Attempts to seek to the given position. Only supports SEEK_SET.
     */
    public function seek($offset, $whence = SEEK_SET): void
    {
        if (!$this->seekable) {
            throw new \RuntimeException('This AppendStream is not seekable');
        } elseif ($whence !== SEEK_SET) {
            throw new \RuntimeException('The AppendStream can only seek with SEEK_SET');
        }

$this->pos = $this->current = 0;

// Rewind each stream
        foreach ($this->streams as $i => $stream) {
            try {
                $stream->rewind();
            } catch (\Exception $e) {
                throw new \RuntimeException('Unable to seek stream '
                    .$i.' of the AppendStream', 0, $e);
            }
        }

// Seek to the actual position by reading from each stream
        while ($this->pos < $offset && !$this->eof()) {
            $result = $this->read(min(8096, $offset - $this->pos));
            if ($result === '') {
                break;
            }
        }
    }

/**
     * Reads from all of the appended streams until the length is met or EOF.
     */
    public function read($length): string
    {
        $buffer = '';
        $total = count($this->streams) - 1;
        $remaining = $length;
        $progressToNext = false;

while ($remaining > 0) {
            // Progress to the next stream if needed.
            if ($progressToNext || $this->streams[$this->current]->eof()) {
                $progressToNext = false;
                if ($this->current === $total) {
                    break;
                }
                ++$this->current;
            }

$result = $this->streams[$this->current]->read($remaining);

if ($result === '') {
                $progressToNext = true;
                continue;
            }

$buffer .= $result;
            $remaining = $length - strlen($buffer);
        }

$this->pos += strlen($buffer);

return $buffer;
    }

public function isReadable(): bool
    {
        return true;
    }

public function isWritable(): bool
    {
        return false;
    }

public function isSeekable(): bool
    {
        return $this->seekable;
    }

public function write($string): int
    {
        throw new \RuntimeException('Cannot write to an AppendStream');
    }

/**
     * @return mixed
     */
    public function getMetadata($key = null)
    {
        return $key ? null : [];
    }
}

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Editing: AppendStream.php

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