Version 4.0.13.1
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<?php
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/**
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* @brief Class for managing RSS documents
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* @author <a href='http://www.invisionpower.com'>Invision Power Services, Inc.</a>
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* @copyright (c) 2001 - SVN_YYYY Invision Power Services, Inc.
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* @license http://www.invisionpower.com/legal/standards/
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* @package IPS Social Suite
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* @since 18 Feb 2013
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* @version SVN_VERSION_NUMBER
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*/
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namespace IPS\Xml;
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/* To prevent PHP errors (extending class does not exist) revealing path */
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if ( !defined( '\IPS\SUITE_UNIQUE_KEY' ) )
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{
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header( ( isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0' ) . ' 403 Forbidden' );
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exit;
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}
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/**
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* Class for managing RSS documents
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*/
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class _Rss extends SimpleXML
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{
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/**
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* Create RSS document
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*
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* @param \IPS\Http\Url $url URL to document
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* @param string $title Channel Title
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* @param string $description Channel Description
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* @return void
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* @see <a href='http://cyber.law.harvard.edu/rss/languages.html'>Allowable values for language in RSS</a>
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*/
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public static function newDocument( \IPS\Http\Url $url, $title, $description )
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{
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$xml = new self( '<rss version="2.0" />' );
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$channel = $xml->addChild( 'channel' );
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$channel->addChild( 'title', $title );
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$channel->addChild( 'link', (string) $url );
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$channel->addChild( 'description', $description );
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$locale = mb_strtolower( \IPS\Member::loggedIn()->language()->short );
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foreach ( array( preg_replace( '/^(.+?)_(.+?)(\..+?)$/', '$1-$2', $locale ), preg_replace( '/^(.+?)_(.+?)(\..+?)$/', '$1', $locale ) ) as $langCodeToTry )
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{
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if ( in_array( $langCodeToTry, array( 'af', 'sq', 'eu', 'be', 'bg', 'ca', 'zh-cn', 'zh-tw', 'hr', 'cs', 'da', 'nl', 'nl-be', 'nl-nl', 'en', 'en-au', 'en-bz', 'en-ca', 'en-ie', 'en-jm', 'en-nz', 'en-ph', 'en-za', 'en-tt', 'en-gb', 'en-us', 'en-zw', 'et', 'fo', 'fi', 'fr', 'fr-be', 'fr-ca', 'fr-fr', 'fr-lu', 'fr-mc', 'fr-ch', 'gl', 'gd', 'de', 'de-at', 'de-de', 'de-li', 'de-lu', 'de-ch', 'el', 'haw', 'hu', 'is', 'in', 'ga', 'it', 'it-it', 'it-ch', 'ja', 'ko', 'mk', 'no', 'pl', 'pt', 'pt-br', 'pt-pt', 'ro', 'ro-mo', 'ro-ro', 'ru', 'ru-mo', 'ru-ru', 'sr', 'sk', 'sl', 'es', 'es-ar', 'es-bo', 'es-cl', 'es-co', 'es-cr', 'es-do', 'es-ec', 'es-sv', 'es-gt', 'es-hn', 'es-mx', 'es-ni', 'es-pa', 'es-py', 'es-pe', 'es-pr', 'es-es', 'es-uy', 'es-ve', 'sv', 'sv-fi', 'sv-se', 'tr', 'uk' ) ) )
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{
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$channel->addChild( 'language', $langCodeToTry );
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break;
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}
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}
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return $xml;
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}
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/**
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* Add Item
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*
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* @param string $title Item title
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* @param \IPS\Http\Url|NULL $link Item link
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* @param string|NULL $description Item description/content
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* @param \IPS\DateTime|NULL $date Item date
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* @param string $guid Item ID
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* @return void
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* @todo [Future] The feed will validate now, but unrecognized attribute values cause warnings when validating. Also, the validator recommends using an Atom feed with the atom:link attribute.
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*/
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public function addItem( $title = NULL, \IPS\Http\Url $link = NULL, $description = NULL, \IPS\DateTime $date = NULL, $guid = NULL )
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{
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if ( $title === NULL and $description === NULL )
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{
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throw new \InvalidArgumentException;
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}
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$item = $this->channel->addChild( 'item' );
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if ( $title !== NULL )
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{
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$item->addChild( 'title', $title );
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}
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$item->addChild( 'link', $link->rfc3986() );
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if ( $description !== NULL )
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{
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$item->addChild( 'description', $description );
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}
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if ( $guid !== NULL )
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{
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$item->addChild( 'guid', $guid )->addAttribute( 'isPermaLink', 'false' );
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}
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if ( $date !== NULL )
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{
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$item->addChild( 'pubDate', $date->format('r') );
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}
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}
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/**
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* Get title
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*
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* @return string
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*/
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public function title()
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{
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return $this->channel->title;
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}
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/**
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* Get articles
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*
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* @param mixed $guidKey In previous versions, we encoded a key with the GUID. For legacy purposes, this can be passed here.
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* @return array
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*/
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public function articles( $guidKey=NULL )
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{
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$articles = array();
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foreach ( $this->channel->item as $item )
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{
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$link = NULL;
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if ( $item->link )
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{
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try
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{
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$link = \IPS\Http\Url::external( $item->link );
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}
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catch ( \Exception $e ) { }
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}
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if ( isset( $item->guid ) )
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{
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$guid = $item->guid;
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}
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else
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{
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$guid = '';
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foreach ( array( 'title', 'link', 'description' ) as $k )
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{
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if ( isset( $item->$k ) )
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{
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$guid .= $item->$k;
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}
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}
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$guid = preg_replace( "#\s|\r|\n#is", "", $guid );
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}
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$guid = md5( $guidKey . $guid );
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$articles[ $guid ] = array(
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'title' => ( (string) $item->title ) ?: ( mb_substr( $item->description, 0, 47 ) . '...' ),
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'content' => (string) $item->description,
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'date' => $item->pubDate ? \IPS\DateTime::ts( strtotime( $item->pubDate ), TRUE ) : \IPS\DateTime::ts( strtotime( $this->channel->pubDate ), TRUE ),
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'link' => $link
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);
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}
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return $articles;
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}
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}
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