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<?php

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/**

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* Url.php

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* @package Embera

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* @author Michael Pratt <yo@michael-pratt.com>

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* @link http://www.michael-pratt.com/

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* For the full copyright and license information, please view the LICENSE

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* file that was distributed with this source code.

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namespace Embera;

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/**

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* This class is used to preform common/popular

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* tasks into a url string

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class Url

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{

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/** @var string The url */

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protected $url;

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/** @var string Placeholder for the original url */

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protected $originalUrl;

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protected $parts = [];

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/**

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* Construct

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* @param string $url A valid url string

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* @return void

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public function __construct($url)

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{

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$this->originalUrl = $url;

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$this->overwrite($url);

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}

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/**

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* Returns the full url when

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* the object is casted into a string

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* @return string

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public function __toString()

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{

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$url = [];

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if (!in_array(strtolower($this->parts['scheme']), ['http', 'https'])) {

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$this->parts['scheme'] = 'https';

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}

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$url[] = $this->parts['scheme'] . '://' . $this->parts['host'] . $this->parts['path'];

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if (!empty($this->parts['query'])) {

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$url[] = '?' . $this->parts['query'];

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}

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if (!empty($this->parts['fragment'])) {

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$url[] = '#' . $this->parts['fragment'];

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}

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return implode('', $url);

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}

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/**

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* Overwrites the value of $this->url with

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* the given parameter.

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* @param string $url

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* @return void

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public function overwrite($url)

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{

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$this->url = $url;

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$this->parts = array_merge([

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'scheme' => 'https',

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'host' => '',

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'path' => '',

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'query' => '',

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'fragment' => '',

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], (array) parse_url($url));

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}

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/**

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* Discards changes made to a url, and goes back to the original

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* url.

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* @return void

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public function discardChanges()

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{

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$this->__construct($this->originalUrl);

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}

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/**

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* Change the host of the url

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* @param string $host

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* @return void

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public function setHost($host)

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{

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$this->parts['host'] = $host;

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}

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/**

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* Strips the query string from the url

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* @return void

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public function removeQueryString()

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{

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$this->parts['query'] = $this->parts['fragment'] = false;

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}

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/**

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* Strips the / at the end of a url

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* @return void

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public function removeLastSlash()

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{

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$this->parts['path'] = rtrim($this->parts['path'], '/');

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}

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/**

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* Strips starting www from the url

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* @return void

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public function removeWWW()

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{

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$this->parts['host'] = preg_replace('~^www\.~i', '', $this->parts['host']);

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}

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/**

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* Adds www. subdomain to the urls

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* @return void

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public function addWWW()

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{

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if (!preg_match('~^www\.~i', $this->parts['host'])) {

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$this->parts['host'] = 'www.' . $this->parts['host'];

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}

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}

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/**

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* Replaces https protocol to http

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* @return void

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public function convertToHttp()

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{

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$this->parts['scheme'] = 'http';

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}

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/**

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* Replaces http protocol to https

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* @return void

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public function convertToHttps()

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{

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$this->parts['scheme'] = 'https';

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}

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}

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