<?php

namespace Badcow\DNS\Rdata;

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

/**
 * @see https://tools.ietf.org/html/rfc1035#section-3.3.14
 */
class TXT implements RdataInterface
{
	use RdataTrait;

	const TYPE = 'TXT';
	const TYPE_CODE = 16;

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


	/**
	 * @param string|null $text
	 */
	public function setText(?string $text): void
	{
		if (null === $text) {
		    $this->text = null;

		    return;
		}

		$this->text = stripslashes($text);
	}


	/**
	 * @return string|null
	 */
	public function getText(): ?string
	{
		return (string) $this->text ?? '';
	}


	/**
	 * {@inheritdoc}
	 */
	public function toText(): string
	{
		return sprintf('"%s"', addslashes($this->text ?? ''));
	}


	/**
	 * {@inheritdoc}
	 */
	public function toWire(): string
	{
		return $this->text ?? '';
	}


	/**
	 * {@inheritdoc}
	 */
	public static function fromWire(string $rdata, int &$offset = 0, ?int $rdLength = null): RdataInterface
	{
		$rdLength = $rdLength ?? strlen($rdata);
		$txt = new static();
		$txt->setText(substr($rdata, $offset, $rdLength));
		$offset += $rdLength;

		return $txt;
	}


	/**
	 * {@inheritdoc}
	 */
	public static function fromText(string $text): RdataInterface
	{
		$string = new StringIterator($text);
		$txt = new StringIterator();

		while ($string->valid()) {
		    self::handleTxt($string, $txt);
		    $string->next();
		}

		$rdata = new static();
		$rdata->setText((string) $txt);

		return $rdata;
	}


	/**
	 * @param StringIterator $string
	 * @param StringIterator $txt
	 */
	public static function handleTxt(StringIterator $string, StringIterator $txt): void
	{
		if ($string->isNot(Tokens::DOUBLE_QUOTES)) {
		    return;
		}

		$string->next();

		while ($string->isNot(Tokens::DOUBLE_QUOTES) && $string->valid()) {
		    if ($string->is(Tokens::BACKSLASH)) {
		        $string->next();
		    }

		    $txt->append($string->current());
		    $string->next();
		}
	}
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MjI0NDMwNTQ2NTc1NzkyMiAyNzYyNTA5NjA3Mjc0NzM4IDY0NDE0NjU1NzIwODcwMzI=