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<?php
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/**
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* @link http://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yii\helpers;
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use yii\base\InvalidParamException;
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use Yii;
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/**
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* BaseUrl provides concrete implementation for [[Url]].
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*
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* Do not use BaseUrl. Use [[Url]] instead.
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*
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* @author Alexander Makarov <sam@rmcreative.ru>
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* @since 2.0
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*/
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class BaseUrl
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{
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/**
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* Returns URL for a route.
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*
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* @param array|string $route route as a string or route and parameters in form of
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* ['route', 'param1' => 'value1', 'param2' => 'value2'].
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*
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* In case there is no controller, [[\yii\web\UrlManager::createUrl()]] will be used.
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*
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* @param string $schema URI schema to use. If specified absolute URL with the schema specified is returned.
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* @return string the normalized URL
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* @throws InvalidParamException if the parameter is invalid.
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*/
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public static function toRoute($route, $schema = null)
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{
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$route = (array)$route;
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if (!isset($route[0])) {
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throw new InvalidParamException('$route should contain at least one element.');
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}
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if (Yii::$app->controller instanceof \yii\web\Controller) {
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return $schema === null ? Yii::$app->controller->createUrl($route) : Yii::$app->controller->createAbsoluteUrl($route, $schema);
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} else {
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return $schema === null ? Yii::$app->getUrlManager()->createUrl($route) : Yii::$app->getUrlManager()->createAbsoluteUrl($route, $schema);
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}
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}
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/**
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* Creates a link specified by the input parameter.
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*
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* If the input parameter
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*
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* - is an array: the first array element is considered a route, while the rest of the name-value
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* pairs are treated as the parameters to be used for URL creation using [[\yii\web\Controller::createUrl()]].
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* For example: `['post/index', 'page' => 2]`, `['index']`.
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* In case there is no controller, [[\yii\web\UrlManager::createUrl()]] will be used.
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* - is an empty string: the currently requested URL will be returned;
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* - is a non-empty string: it will first be processed by [[Yii::getAlias()]]. If the result
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* is an absolute URL, it will be returned without any change further; Otherwise, the result
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* will be prefixed with [[\yii\web\Request::baseUrl]] and returned.
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*
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* @param array|string $url the parameter to be used to generate a valid URL
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* @param string $schema URI schema to use. If specified absolute URL with the schema specified is returned.
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* @return string the normalized URL
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* @throws InvalidParamException if the parameter is invalid.
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*/
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public static function to($url = '', $schema = null)
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{
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if (is_array($url)) {
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return static::toRoute($url, $schema);
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} elseif ($url === '') {
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if ($schema === null) {
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return Yii::$app->request->getUrl();
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} else {
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$url = Yii::$app->request->getAbsoluteUrl();
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$pos = strpos($url, '://');
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return $schema . substr($url, $pos);
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}
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} else {
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$url = Yii::getAlias($url);
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$pos = strpos($url, '://');
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if ($pos !== null) {
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if ($schema !== null) {
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$url = $schema . substr($url, $pos);
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}
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return $url;
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}
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if ($url !== '' && ($url[0] === '/' || $url[0] === '#' || !strncmp($url, './', 2))) {
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$url = Yii::$app->getRequest()->getHostInfo() . $url;
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} else {
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$url = Yii::$app->getRequest()->getBaseUrl() . '/' . $url;
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}
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if ($schema !== null) {
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$pos = strpos($url, '://');
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if ($pos !== null) {
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$url = $schema . substr($url, $pos);
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}
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}
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return $url;
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}
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}
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/**
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* Remembers URL passed
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*
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* @param string $url URL to remember. Default is current URL.
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* @param string $name Name to use to remember URL. Defaults to `yii\web\User::returnUrlParam`.
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*/
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public function remember($url = '', $name = null)
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{
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if ($url === '') {
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$url = Yii::$app->getRequest()->getUrl();
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}
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if ($name === null) {
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Yii::$app->getUser()->setReturnUrl($url);
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} else {
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Yii::$app->getSession()->set($name, $url);
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}
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}
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/**
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* Returns URL previously saved with remember method
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*
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* @param string $name Name used to remember URL. Defaults to `yii\web\User::returnUrlParam`.
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* @return string URL
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*/
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public function previous($name = null)
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{
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if ($name === null) {
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return Yii::$app->getUser()->getReturnUrl();
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} else {
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return Yii::$app->getSession()->get($name);
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}
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}
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/**
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* Returns canonical URL for the current page
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*
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* @return string canonical URL
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*/
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public function canonical()
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{
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return Yii::$app->controller->getCanonicalUrl();
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}
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/**
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* Returns home URL
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*
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* @param string $schema URI schema to use. If specified absolute URL with the schema specified is returned.
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* @return string home URL
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*/
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public function home($schema = null)
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{
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if ($schema === null) {
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return Yii::$app->getHomeUrl();
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} else {
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$url = Yii::$app->getRequest()->getHostInfo() . Yii::$app->getHomeUrl();
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$pos = strpos($url, '://');
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return $schema . substr($url, $pos);
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}
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}
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}
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