<?php

namespace CBOR;

use InvalidArgumentException;
use RuntimeException;

use function sprintf;
use function strlen;

final class StringStream implements Stream
{
    /** @var resource */
    private $resource;

    public function __construct(string $data)
    {
        $resource = fopen('php://memory', 'rb+');
        if ($resource === false) {
            throw new RuntimeException('Unable to open the memory');
        }
        $result = fwrite($resource, $data);
        if ($result === false) {
            throw new RuntimeException('Unable to write the memory');
        }
        $result = rewind($resource);
        if ($result === false) {
            throw new RuntimeException('Unable to rewind the memory');
        }
        $this->resource = $resource;
    }

    public static function create(string $data): self
    {
        return new self($data);
    }

    public function read(int $length): string
    {
        if ($length === 0) {
            return '';
        }

        $alreadyRead = 0;
        $data = '';
        while ($alreadyRead < $length) {
            $left = $length - $alreadyRead;
            $sizeToRead = $left < 1024 && $left > 0 ? $left : 1024;
            $newData = fread($this->resource, $sizeToRead);
            $alreadyRead += $sizeToRead;

            if ($newData === false) {
                throw new RuntimeException('Unable to read the memory');
            }
            if (strlen($newData) < $sizeToRead) {
                throw new InvalidArgumentException(sprintf(
                    'Out of range. Expected: %d, read: %d.',
                    $length,
                    strlen($data)
                ));
            }
            $data .= $newData;
        }

        if (strlen($data) !== $length) {
            throw new InvalidArgumentException(sprintf(
                'Out of range. Expected: %d, read: %d.',
                $length,
                strlen($data)
            ));
        }

        return $data;
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MzgyMDA0MTQ0MDY2MTIwNiAxNTY3OTA0MzcyNTY2OTQzIDkxOTE1MjkxNTY1Nzc0NQ==