PHP Classes

File: Domain/Site.php

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  Classes of Igor Dyshlenko   PHP Image Crawler   Domain/Site.php   Download  
File: Domain/Site.php
Role: Class source
Content type: text/plain
Description: Class source
Class: PHP Image Crawler
Crawl Web site pages to find images in the pages
Author: By
Last change:
Date: 2 years ago
Size: 3,227 bytes
 

Contents

Class file image Download
<?php

namespace Domain;

use
InvalidArgumentException;

/**
 * Class Site.
 * Represents general information about the site.
 *
 * @package Domain
 */
class Site
{
   
/** @var string $scheme */
   
private $scheme;

   
/** @var string $host */
   
private $host;

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

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

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

   
/**
     * Site constructor.
     *
     * @param string $url root URL for parsing
     */
   
public function __construct(string $url)
    {
       
$parsed = parse_url($url);
       
$this->scheme = $parsed['scheme'] ?? null;
       
$this->host = $parsed['host'] ?? null;
       
$this->port = $parsed['port'] ?? null;
       
$this->username = $parsed['user'] ?? null;
       
$this->password = $parsed['pass'] ?? null;

        if (!(
$this->scheme && $this->host)) {
            throw new
InvalidArgumentException('For the root URL, the schema and host must be defined.');
        }
    }

   
/**
     * Get site root URL.
     *
     * @return string site root URL.
     */
   
public function getSiteRoot(): string
   
{
        return
$this->updateUrlElements('/');
    }

   
/**
     * Add the missing URL elements to the fully qualified URL form.
     *
     * @param string $sourceUrl source URL for load.
     *
     * @return string fully qualified URL.
     */
   
public function correctUrl(string $sourceUrl): string
   
{
        return
$this->updateUrlElements($sourceUrl);
    }

   
/**
     * Does the URL belong to the current site?
     *
     * @param string $url
     *
     * @return bool
     */
   
public function isInhere(string $url): bool
   
{
       
$parsed = parse_url($url);

        return
           
/** The scheme is not specified or corresponds to http or https. */
           
((!isset($parsed['scheme'])) ||
             ((
$parsed['scheme'] ?? false) &&
              ((
strtolower($parsed['scheme']) === 'http') || (strtolower($parsed['scheme']) === 'https')))) &&

           
/** Host is not specified or matches the host of the root page. */
           
((!isset($parsed['host'])) || ($parsed['host'] === $this->host));
    }

    protected function
updateUrlElements(string $sourceUrl): string
   
{
       
$parsed = parse_url($sourceUrl);
        if (
$parsed === false) {
            throw new
InvalidArgumentException('The URL "' . $sourceUrl . '" is invalid.');
        }

       
$url = ($parsed['scheme'] ?? $this->scheme) . '://';

        if (((
$parsed['user'] ?? false) && ($parsed['pass'] ?? false)) ||
            (!(
$parsed['host'] ?? false) && $this->username && $this->password)) {
           
$url .= ($parsed['user'] ?? $this->username) . ':' .
                    (
$parsed['pass'] ?? $this->password) . '@';
        }

       
$url .= ($parsed['host'] ?? $this->host);

        if ((
$parsed['port'] ?? false) ||
            (!(
$parsed['host'] ?? false) && $this->port)) {
           
$url .= ':' . ($parsed['port'] ?? $this->port);
        }

       
$url .= ($parsed['path'] ?? '/') .
                ((
$parsed['query'] ?? false) ? '?' . $parsed['query'] : '');

        return
$url;
    }
}