Stream::openZvalStream( $body )

Source

private static function openZvalStream(string $body)
{
    static $wrapper;
    $wrapper ?? \stream_wrapper_register('Nyholm-Psr7-Zval', $wrapper = \get_class(new class
    {
        public $context;
        private $data;
        private $position = 0;
        public function stream_open(): bool
        {
            $this->data = \stream_context_get_options($this->context)['Nyholm-Psr7-Zval']['data'];
            \stream_context_set_option($this->context, 'Nyholm-Psr7-Zval', 'data', null);
            return \true;
        }
        public function stream_read(int $count): string
        {
            $result = \substr($this->data, $this->position, $count);
            $this->position += \strlen($result);
            return $result;
        }
        public function stream_write(string $data): int
        {
            $this->data = \substr_replace($this->data, $data, $this->position, \strlen($data));
            $this->position += \strlen($data);
            return \strlen($data);
        }
        public function stream_tell(): int
        {
            return $this->position;
        }
        public function stream_eof(): bool
        {
            return \strlen($this->data) <= $this->position;
        }
        public function stream_stat(): array
        {
            return [
                'mode' => 33206,
                // POSIX_S_IFREG | 0666
                'nlink' => 1,
                'rdev' => -1,
                'size' => \strlen($this->data),
                'blksize' => -1,
                'blocks' => -1,
            ];
        }
        public function stream_seek(int $offset, int $whence): bool
        {
            if (\SEEK_SET === $whence && (0 <= $offset && \strlen($this->data) >= $offset)) {
                $this->position = $offset;
            } elseif (\SEEK_CUR === $whence && 0 <= $offset) {
                $this->position += $offset;
            } elseif (\SEEK_END === $whence && (0 > $offset && 0 <= $offset = \strlen($this->data) + $offset)) {
                $this->position = $offset;
            } else {
                return \false;
            }
            return \true;
        }
        public function stream_set_option(): bool
        {
            return \true;
        }
        public function stream_truncate(int $new_size): bool
        {
            if ($new_size) {
                $this->data = \substr($this->data, 0, $new_size);
                $this->position = \min($this->position, $new_size);
            } else {
                $this->data = '';
                $this->position = 0;
            }
            return \true;
        }
    }));
    $context = \stream_context_create(['Nyholm-Psr7-Zval' => ['data' => $body]]);
    if (!$stream = @\fopen('Nyholm-Psr7-Zval://', 'r+', \false, $context)) {
        \stream_wrapper_register('Nyholm-Psr7-Zval', $wrapper);
        $stream = \fopen('Nyholm-Psr7-Zval://', 'r+', \false, $context);
    }
    return $stream;
}

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