Bisarca\RobotsTxt\Directive\Host

Complexity

Total Complexity

12

Size/Duplication

Total Lines	90
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	3

Importance

Changes

0

6 Methods

Rating	Name	Duplication	Size	Complexity
B	__construct()	0	20	5
A	getField()	0	4	1
A	getValue()	0	4	1
A	__toString()	0	4	1
A	validateHost()	0	9	3
A	setDomainParser()	0	4	1

<?php

/*
 * This file is part of the bisarca/robots-txt package.
 *
 * (c) Emanuele Minotto <minottoemanuele@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Bisarca\RobotsTxt\Directive;

use Bisarca\RobotsTxt\Exception\InvalidDirectiveException;
use Pdp\Parser;
use Pdp\PublicSuffixListManager;

/**
 * "Host" directive element.
 */
class Host implements NonGroupInterface
{
    /**
     * PHP Domain Parser (if available).
     *
     * @var Parser
     */
    private static $domainParser;

    /**
     * Directive value.
     *
     * @var string
     */
    private $value = '';

    /**
     * {@inheritdoc}
     */
    public function __construct(string $raw)
    {
        if (
            class_exists(Parser::class) &&
            class_exists(PublicSuffixListManager::class) &&
            null === self::$domainParser
        ) {
            $pslManager = new PublicSuffixListManager();
            self::setDomainParser(new Parser($pslManager->getList()));
        }

        if (!preg_match('/^host:\s*([^# ]+).*/i', $raw, $matches)) {
            throw InvalidDirectiveException::create($raw);
        }

        $host = trim($matches[1]);

        $this->validateHost($host, $raw);
        $this->value = $host;
    }

    /**
     * {@inheritdoc}
     */
    public static function getField(): string
    {
        return 'host';
    }

    /**
     * {@inheritdoc}
     */
    public function getValue(): string
    {
        return $this->value;
    }

    /**
     * {@inheritdoc}
     */
    public function __toString(): string
    {
        return sprintf('Host: %s', $this->value);
    }

    /**
     * Validates host (if PHP Domain Parser is available).
     *
     * @param string $host
     * @param string $raw
     */
    private function validateHost(string $host, string $raw)
    {
        if (
            null !== self::$domainParser &&
            !self::$domainParser->isSuffixValid($host)
        ) {
            throw InvalidDirectiveException::create($raw);
        }
    }

    /**
     * Sets the domain parser.
     *
     * @param Parser $domainParser
     */
    public static function setDomainParser(Parser $domainParser)
    {
        self::$domainParser = $domainParser;
    }
}