<?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:----NTkwNzIxMzc3NzA3NDQ1MiAyMzY5NjEwMzA2NTI1NzU1IDk1OTk2MTM2NTg5NDIzMjg=