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<?php |
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/** |
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* @package Redcore |
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* @subpackage Document |
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* |
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* @copyright Copyright (C) 2008 - 2021 redWEB.dk. All rights reserved. |
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* @license GNU General Public License version 2 or later, see LICENSE. |
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*/ |
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defined('JPATH_BASE') or die; |
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/** |
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* ApiDocumentHal class, provides an easy interface to parse and display HAL+JSON or HAL+XML output |
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* |
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* @package Redcore |
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* @subpackage Document |
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* @see http://stateless.co/hal_specification.html |
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* @since 1.2 |
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*/ |
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class RApiHalDocumentDocument extends JDocument |
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{ |
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/** |
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* Document name |
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* |
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* @var string |
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* @since 1.2 |
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*/ |
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protected $name = 'joomla'; |
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/** |
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* Render all hrefs as absolute, relative is default |
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*/ |
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protected $absoluteHrefs = false; |
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/** |
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* Document format (xml or json) |
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*/ |
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protected $documentFormat = false; |
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/** |
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* @var RApiHalHal Main HAL object |
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* @since 1.2 |
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*/ |
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public $hal = null; |
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/** |
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* Class constructor |
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* |
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* @param array $options Associative array of options |
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* |
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* @since 1.2 |
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*/ |
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public function __construct($options = array()) |
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{ |
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parent::__construct($options); |
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$this->documentFormat = $options['documentFormat']; |
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if (!in_array($this->documentFormat, array('xml', 'json'))) |
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{ |
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$this->documentFormat = 'json'; |
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} |
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// Set default mime type. |
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$this->_mime = 'application/hal+' . $this->documentFormat; |
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// Set document type. |
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$this->_type = 'hal+' . $this->documentFormat; |
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// Set absolute/relative hrefs. |
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$this->absoluteHrefs = isset($options['absoluteHrefs']) ? $options['absoluteHrefs'] : true; |
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// Set token if needed |
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$this->uriParams = isset($options['uriParams']) ? $options['uriParams'] : array(); |
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} |
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/** |
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* Render the document. |
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* |
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* @param boolean $cache If true, cache the output |
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* @param array $params Associative array of attributes |
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* |
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* @return string The rendered data |
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* |
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* @since 1.2 |
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*/ |
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public function render($cache = false, $params = array()) |
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{ |
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// Get the HAL object from the buffer. |
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/** @var $hal RApiHalDocumentResource */ |
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$hal = $this->getBuffer(); |
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// If required, change relative links to absolute. |
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if (is_object($hal)) |
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{ |
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// Adjust hrefs in the _links object. |
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$this->relToAbs($hal, $this->absoluteHrefs); |
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} |
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if ($this->documentFormat == 'xml') |
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{ |
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$content = $hal->getXML()->asXML(); |
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} |
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else |
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{ |
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$content = (string) $hal; |
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} |
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$runtime = microtime(true) - $this->hal->startTime; |
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$app = JFactory::getApplication(); |
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$language = explode('-', $app->input->get('lang', RTranslationHelper::getSiteLanguage())); |
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$language = $language[0]; |
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if ($this->hal->options->get('enable_gzip_compression', 0) && RBootstrap::$config->get('webservice_enable_gzip_compression', '1') == '1') |
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{ |
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$app->setHeader('Content-Encoding', 'gzip', true); |
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$content = gzencode($content, 1); |
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} |
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$app->setHeader('Status', $this->hal->statusCode . ' ' . $this->hal->statusText, true); |
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$app->setHeader('Server', '', true); |
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if (RBootstrap::$config->get('enable_access_control_header', '1') == '1') |
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{ |
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$app->setHeader('Access-Control-Allow-Origin', '*', true); |
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} |
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$app->setHeader('Pragma', 'public', true); |
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$app->setHeader('Expires', '0', true); |
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$app->setHeader('Cache-Control', 'must-revalidate, post-check=0, pre-check=0', true); |
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$app->setHeader('Cache-Control', 'private', false); |
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$app->setHeader('Content-type', $this->_mime . '; charset=UTF-8', true); |
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$app->setHeader('X-Runtime', $runtime, true); |
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$app->setHeader('X-Webservice-name', $this->hal->webserviceName, true); |
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$app->setHeader('X-Webservice-version', $this->hal->webserviceVersion, true); |
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$app->setHeader('X-Webservice-Output-Format', $this->documentFormat, true); |
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$app->setHeader('Content-length', strlen($content), true); |
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$app->setHeader('Content-Language', $language, true); |
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$app->sendHeaders(); |
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echo $content; |
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} |
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/** |
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* Returns the document name |
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* |
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* @return string |
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* |
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* @since 1.2 |
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*/ |
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public function getName() |
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{ |
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return $this->name; |
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} |
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/** |
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* Sets HAL object to the document |
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* |
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* @param RApiHalHal $hal Hal object |
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* |
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* @return RApiHalDocumentDocument |
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* |
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* @since 1.2 |
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*/ |
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public function setHal($hal) |
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{ |
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$this->hal = $hal; |
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return $this; |
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} |
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/** |
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* Method to convert relative to absolute links. |
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* |
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* @param RApiHalDocumentResource $hal Hal object which contains links (_links). |
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* @param boolean $absoluteHrefs Should we replace link Href with absolute. |
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* |
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* @return void |
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*/ |
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protected function relToAbs($hal, $absoluteHrefs) |
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{ |
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if ($links = $hal->getLinks()) |
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{ |
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// Adjust hrefs in the _links object. |
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/* @var $link RApiHalDocumentLink */ |
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foreach ($links as $link) |
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{ |
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if (is_array($link)) |
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{ |
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foreach ($link as $group => $arrayLink) |
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{ |
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$href = $arrayLink->getHref(); |
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$href = $this->addUriParameters($href, $absoluteHrefs); |
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$arrayLink->setHref($href); |
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$hal->setReplacedLink($arrayLink, $group); |
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} |
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} |
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else |
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{ |
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$href = $link->getHref(); |
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$href = $this->addUriParameters($href, $absoluteHrefs); |
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$link->setHref($href); |
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$hal->setReplacedLink($link); |
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} |
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} |
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} |
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// Adjust hrefs in the _embedded object (if there is one). |
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if ($embedded = $hal->getEmbedded()) |
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{ |
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foreach ($embedded as $resources) |
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{ |
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if (is_object($resources)) |
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{ |
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$this->relToAbs($resources, $absoluteHrefs); |
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} |
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elseif (is_array($resources)) |
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{ |
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foreach ($resources as $resource) |
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{ |
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if (is_object($resource)) |
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{ |
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$this->relToAbs($resource, $absoluteHrefs); |
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} |
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} |
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} |
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} |
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} |
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} |
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/** |
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* Prepares link |
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* |
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* @param string $href Link location |
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* @param boolean $absoluteHrefs Should we replace link Href with absolute. |
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* |
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* @return string Modified link |
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* |
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* @since 1.2 |
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*/ |
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public function addUriParameters($href, $absoluteHrefs) |
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{ |
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if ($absoluteHrefs && substr($href, 0, 1) == '/') |
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{ |
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$href = rtrim(JUri::base(), '/') . $href; |
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} |
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$uri = JUri::getInstance($href); |
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if (!empty($this->uriParams)) |
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{ |
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foreach ($this->uriParams as $paramKey => $param) |
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{ |
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if (!$uri->hasVar($paramKey)) |
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{ |
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$uri->setVar($paramKey, $param); |
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} |
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} |
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} |
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return $uri->toString(); |
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} |
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/** |
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* Sets the document name |
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* |
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* @param string $name Document name |
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* |
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* @return RApiHalDocumentDocument instance of $this to allow chaining |
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* |
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* @since 1.2 |
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*/ |
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public function setName($name = 'joomla') |
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{ |
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$this->name = $name; |
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return $this; |
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} |
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} |
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