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Stream.php

<?php
namespace GuzzleHttp\Psr7;

use Psr\Http\Message\StreamInterface;

/**
 * PHP stream implementation.
 *
 * @var $stream
 */
class Stream implements StreamInterface
{
    private $stream;
    private $size;
    private $seekable;
    private $readable;
    private $writable;
    private $uri;
    private $customMetadata;

/** @var array Hash of readable and writable stream types */
    private static $readWriteHash = [
        'read' => [
            'r' => true, 'w+' => true, 'r+' => true, 'x+' => true, 'c+' => true,
            'rb' => true, 'w+b' => true, 'r+b' => true, 'x+b' => true,
            'c+b' => true, 'rt' => true, 'w+t' => true, 'r+t' => true,
            'x+t' => true, 'c+t' => true, 'a+' => true, 'rb+' => true,
        ],
        'write' => [
            'w' => true, 'w+' => true, 'rw' => true, 'r+' => true, 'x+' => true,
            'c+' => true, 'wb' => true, 'w+b' => true, 'r+b' => true, 'rb+' => true,
            'x+b' => true, 'c+b' => true, 'w+t' => true, 'r+t' => true,
            'x+t' => true, 'c+t' => true, 'a' => true, 'a+' => true
        ]
    ];

/**
     * This constructor accepts an associative array of options.
     *
     * - size: (int) If a read stream would otherwise have an indeterminate
     *   size, but the size is known due to foreknowledge, then you can
     *   provide that size, in bytes.
     * - metadata: (array) Any additional metadata to return when the metadata
     *   of the stream is accessed.
     *
     * @param resource $stream  Stream resource to wrap.
     * @param array    $options Associative array of options.
     *
     * @throws \InvalidArgumentException if the stream is not a stream resource
     */
    public function __construct($stream, $options = [])
    {
        if (!is_resource($stream)) {
            throw new \InvalidArgumentException('Stream must be a resource');
        }

if (isset($options['size'])) {
            $this->size = $options['size'];
        }

$this->customMetadata = isset($options['metadata'])
            ? $options['metadata']
            : [];

$this->stream = $stream;
        $meta = stream_get_meta_data($this->stream);
        $this->seekable = $meta['seekable'];
        $this->readable = isset(self::$readWriteHash['read'][$meta['mode']]);
        $this->writable = isset(self::$readWriteHash['write'][$meta['mode']]);
        $this->uri = $this->getMetadata('uri');
    }

/**
     * Closes the stream when the destructed
     */
    public function __destruct()
    {
        $this->close();
    }

public function __toString()
    {
        try {
            $this->seek(0);
            return (string) stream_get_contents($this->stream);
        } catch (\Exception $e) {
            return '';
        }
    }

public function getContents()
    {
        if (!isset($this->stream)) {
            throw new \RuntimeException('Stream is detached');
        }

$contents = stream_get_contents($this->stream);

if ($contents === false) {
            throw new \RuntimeException('Unable to read stream contents');
        }

return $contents;
    }

public function close()
    {
        if (isset($this->stream)) {
            if (is_resource($this->stream)) {
                fclose($this->stream);
            }
            $this->detach();
        }
    }

public function detach()
    {
        if (!isset($this->stream)) {
            return null;
        }

$result = $this->stream;
        unset($this->stream);
        $this->size = $this->uri = null;
        $this->readable = $this->writable = $this->seekable = false;

return $result;
    }

public function getSize()
    {
        if ($this->size !== null) {
            return $this->size;
        }

if (!isset($this->stream)) {
            return null;
        }

// Clear the stat cache if the stream has a URI
        if ($this->uri) {
            clearstatcache(true, $this->uri);
        }

$stats = fstat($this->stream);
        if (isset($stats['size'])) {
            $this->size = $stats['size'];
            return $this->size;
        }

return null;
    }

public function isReadable()
    {
        return $this->readable;
    }

public function isWritable()
    {
        return $this->writable;
    }

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

public function eof()
    {
        if (!isset($this->stream)) {
            throw new \RuntimeException('Stream is detached');
        }

return feof($this->stream);
    }

public function tell()
    {
        if (!isset($this->stream)) {
            throw new \RuntimeException('Stream is detached');
        }

$result = ftell($this->stream);

if ($result === false) {
            throw new \RuntimeException('Unable to determine stream position');
        }

return $result;
    }

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

public function seek($offset, $whence = SEEK_SET)
    {
        if (!isset($this->stream)) {
            throw new \RuntimeException('Stream is detached');
        }
        if (!$this->seekable) {
            throw new \RuntimeException('Stream is not seekable');
        }
        if (fseek($this->stream, $offset, $whence) === -1) {
            throw new \RuntimeException('Unable to seek to stream position '
                . $offset . ' with whence ' . var_export($whence, true));
        }
    }

public function read($length)
    {
        if (!isset($this->stream)) {
            throw new \RuntimeException('Stream is detached');
        }
        if (!$this->readable) {
            throw new \RuntimeException('Cannot read from non-readable stream');
        }
        if ($length < 0) {
            throw new \RuntimeException('Length parameter cannot be negative');
        }

if (0 === $length) {
            return '';
        }

$string = fread($this->stream, $length);
        if (false === $string) {
            throw new \RuntimeException('Unable to read from stream');
        }

return $string;
    }

public function write($string)
    {
        if (!isset($this->stream)) {
            throw new \RuntimeException('Stream is detached');
        }
        if (!$this->writable) {
            throw new \RuntimeException('Cannot write to a non-writable stream');
        }

// We can't know the size after writing anything
        $this->size = null;
        $result = fwrite($this->stream, $string);

if ($result === false) {
            throw new \RuntimeException('Unable to write to stream');
        }

return $result;
    }

public function getMetadata($key = null)
    {
        if (!isset($this->stream)) {
            return $key ? null : [];
        } elseif (!$key) {
            return $this->customMetadata + stream_get_meta_data($this->stream);
        } elseif (isset($this->customMetadata[$key])) {
            return $this->customMetadata[$key];
        }

$meta = stream_get_meta_data($this->stream);

return isset($meta[$key]) ? $meta[$key] : null;
    }
}

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	dataewom/dataewom	0755	2025-05-19 08:43:02
..	dir	-	dataewom/dataewom	0755	2025-05-19 08:43:02
AppendStream.php	text/x-php	5.59 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
BufferStream.php	text/x-php	2.97 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
CachingStream.php	text/x-php	4.15 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
DroppingStream.php	text/x-php	1.05 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
FnStream.php	text/x-php	3.84 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
InflateStream.php	text/x-php	1.78 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
LazyOpenStream.php	text/x-php	880 B	dataewom/dataewom	0644	2019-10-08 01:36:54
LimitStream.php	text/x-php	4.11 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
MessageTrait.php	text/x-php	4.47 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
MultipartStream.php	text/x-php	4.58 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
NoSeekStream.php	text/x-php	424 B	dataewom/dataewom	0644	2019-10-08 01:36:54
PumpStream.php	text/x-php	3.94 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
Request.php	text/x-php	3.35 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
Response.php	text/x-php	4.13 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
Rfc7230.php	text/x-php	684 B	dataewom/dataewom	0644	2019-10-08 01:36:54
ServerRequest.php	text/x-php	9.57 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
Stream.php	text/x-php	7.04 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
StreamDecoratorTrait.php	text/x-php	3.2 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
StreamWrapper.php	text/x-php	3.67 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
UploadedFile.php	text/x-php	7.37 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
Uri.php	text/x-php	20.3 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
UriNormalizer.php	text/x-php	8.12 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
UriResolver.php	text/x-php	8.57 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
functions.php	text/x-php	26.03 KB	dataewom/dataewom	0644	2019-10-08 01:36:54
functions_include.php	text/x-php	156 B	dataewom/dataewom	0644	2019-10-08 01:36:54

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