vendor/guzzlehttp/psr7/src/Stream.php

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

<?php

declare(strict_types=1);

namespace GuzzleHttp\Psr7;

use Psr\Http\Message\StreamInterface;

/**
 * PHP stream implementation.
 */
class Stream implements StreamInterface
{
    /**
     * @see http://php.net/manual/function.fopen.php
     * @see http://php.net/manual/en/function.gzopen.php
     */
    private const READABLE_MODES = '/r|a\+|ab\+|w\+|wb\+|x\+|xb\+|c\+|cb\+/';
    private const WRITABLE_MODES = '/a|w|r\+|rb\+|rw|x|c/';

    /** @var resource */
    private $stream;
    /** @var int|null */
    private $size;
    /** @var bool */
    private $seekable;
    /** @var bool */
    private $readable;
    /** @var bool */
    private $writable;
    /** @var string|null */
    private $uri;
    /** @var mixed[] */
    private $customMetadata;

    /**
     * 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{size?: int, metadata?: array} $options Associative array of options.
     *
     * @throws \InvalidArgumentException if the stream is not a stream resource
     */
    public function __construct($stream, array $options = [])
    {
        if (!is_resource($stream)) {
            throw new \InvalidArgumentException('Stream must be a resource');
        }

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

        $this->customMetadata = $options['metadata'] ?? [];