<?php

namespace Badcow\DNS\Rdata;

use Badcow\DNS\Parser\StringIterator;
use Badcow\DNS\Parser\Tokens;

/**
 * @see https://tools.ietf.org/html/rfc1035#section-3.3.2
 */
class HINFO implements RdataInterface
{
    use RdataTrait;

    public const TYPE = 'HINFO';
    public const TYPE_CODE = 13;

    /** @var string|null */
    private $cpu;

    /** @var string|null */
    private $os;

    public function setCpu(?string $cpu): void
    {
        $this->cpu = $cpu;
    }

    /**
     * @return string
     */
    public function getCpu(): ?string
    {
        return $this->cpu;
    }

    public function setOs(?string $os): void
    {
        $this->os = $os;
    }

    /**
     * @return string
     */
    public function getOs(): ?string
    {
        return $this->os;
    }

    public function toText(): string
    {
        return sprintf('"%s" "%s"', $this->cpu ?? '', $this->os ?? '');
    }

    public function toWire(): string
    {
        return $this->toText();
    }

    public function fromWire(string $rdata, int &$offset = 0, ?int $rdLength = null): void
    {
        $this->fromText(substr($rdata, $offset, $rdLength ?? strlen($rdata)));
        $offset += $rdLength;
    }

    public function fromText(string $text): void
    {
        $string = new StringIterator($text);
        $this->setCpu(self::extractText($string));
        $this->setOs(self::extractText($string));
    }

    private static function extractText(StringIterator $string): string
    {
        $txt = new StringIterator();

        if ($string->is(Tokens::DOUBLE_QUOTES)) {
            TXT::handleTxt($string, $txt);
            $string->next();
        } else {
            while ($string->isNot(Tokens::SPACE) && $string->valid()) {
                $txt->append($string->current());
                $string->next();
            }
        }

        if ($string->is(Tokens::SPACE)) {
            $string->next();
        }

        return (string) $txt;
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MTMzMjQ3MDIwNjQ3NTA4IDU4ODI3MjU1ODgzNjk2NjggNjM0NzQ1NTY2MTY4MzMxOA==