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<?php
/**
* @version $Id: mod_slick_rss.php 9764 2008-03-22 17:32:11Z davidwhthomas $
* @package Joomla 1.5
* @copyright Copyright (C) 2008 David W.H Thomas. All rights reserved.
* @license GNU/GPL, see LICENSE.php
* Parse and display XML news feeds with mootools DHTML tooltip
*/
// no direct access
defined('_JEXEC') or die('Restricted access');
class modSlickRSSHelper
{
function getFeed(&$params)
{
//global $mainframe;
$slick_rss = array(); //init feed array
if(!class_exists('SimplePie')){
//include Simple Pie processor class
require_once (JPATH_SITE.DS.'libraries'.DS.'simplepie'.DS.'simplepie.php');
}
// check if cache directory exists and is writeable
$cacheDir = JPATH_BASE.DS.'cache';
if ( !is_writable( $cacheDir ) ) {
$slick_rss['error'][] = 'Cache folder is unwriteable. Solution: chmod 777 '.$cacheDir;
$cache_exists = false;
}else{
$cache_exists = true;
}
//get local module parameters from xml file module config settings
$rssurl = $params->get( 'rssurl', NULL );
$rssitems = $params->get( 'rssitems', 5 );
$rssdesc = $params->get( 'rssdesc', 1 );
$rssimage = $params->get( 'rssimage', 1 );
$rssitemtitle_words = $params->get( 'rssitemtitle_words', 0 );
$rssitemdesc = $params->get( 'rssitemdesc', 0 );
$rssitemdesc_images = $params->get( 'rssitemdesc_images', 1 );
$rssitemdesc_words = $params->get( 'rssitemdesc_words', 0 );
$rsstitle = $params->get( 'rsstitle', 1 );
$rsscache = $params->get( 'rsscache', 3600 );
$link_target = $params->get( 'link_target', 1 );
$no_follow = $params->get( 'no_follow', 0 );
$enable_tooltip = $params->get( 'enable_tooltip','yes' );
$tooltip_desc_words = $params->get( 't_word_count_desc', 25 );
$tooltip_desc_images = $params->get( 'tooltip_desc_images', 1 );
$tooltip_title_words = $params->get( 't_word_count_title', 25 );
if(!$rssurl){
$slick_rss['error'][] = 'Invalid feed url. Please enter a valid url in the module settings.';
return $slick_rss; //halt if no valid feed url supplied
}
switch($link_target){ //open links in current or new window
case 1:
$link_target='_blank';
break;
case 0:
$link_target='_self';
break;
default:
$link_target='_blank';
break;
}
$slick_rss['target'] = $link_target;
if($no_follow){
$slick_rss['nofollow'] = 'rel="nofollow"';
}
//Load and build the feed array
$feed = new SimplePie();
$feed->set_feed_url($rssurl);
//check and set caching
if($cache_exists) {
$feed->set_cache_location($cacheDir);
$feed->enable_cache();
$cache_time = (intval($rsscache));
$feed->set_cache_duration($cache_time);
}
else {
$feed->enable_cache('false');
}
$feed->init(); //process the loaded feed
$feed->handle_content_type();
//store any error message
if (isset($feed->error)) {
$slick_rss['error'][] = $feed->error;
}
//start building the feed meta-info (title, desc and image)
// feed title
if ( $feed->get_title() && $rsstitle ) {
$slick_rss['title']['link'] = $feed->get_link();
$slick_rss['title']['title'] = $feed->get_title();
}
// feed description
if ( $rssdesc ) {
$slick_rss['description'] = $feed->get_description();
}
// feed image
if ( $rssimage && $feed->get_image_url() ) {
$slick_rss['image']['url'] = $feed->get_image_url();
$slick_rss['image']['title'] = $feed->get_image_title();
}
//end feed meta-info
//start processing feed items
//if there are items in the feed
if($feed->get_item_quantity()){
//start looping through the feed items
$slick_rss_item = 0; //item counter for array indexing in the loop
foreach ($feed->get_items(0, $rssitems) as $currItem) {
// item title
$item_title = trim($currItem->get_title());
// item title word limit check
if ( $rssitemtitle_words ) {
$item_titles = explode( ' ', $item_title );
$count = count( $item_titles );
if ( $count > $rssitemtitle_words ) {
$item_title = '';
for( $i=0; $i < $rssitemtitle_words; $i++ ) {
$item_title .= ' '. $item_titles[$i];
}
$item_title .= '...';
}
}
$slick_rss['items'][$slick_rss_item]['title'] = $item_title; // Item Title
$slick_rss['items'][$slick_rss_item]['link'] = $currItem->get_permalink();
// item description
if($rssitemdesc){
$desc = trim($currItem->get_description());
if(!$rssitemdesc_images){
$desc = preg_replace("/<img[^>]+\>/i", "", $desc); //strip image tags
}
//item description word limit check
if ( $rssitemdesc_words ) {
$texts = explode( ' ', $desc );
$count = count( $texts );
if ( $count > $rssitemdesc_words ) {
$desc = '';
for( $i=0; $i < $rssitemdesc_words; $i++ ) {
$desc .= ' '. $texts[$i]; //build words
}
$desc .= '...';
}
}
$slick_rss['items'][$slick_rss_item]['description'] = $desc; //Item Description
}
// tooltip text
if ( $enable_tooltip == 'yes' ) {
//tooltip item title
$t_item_title = trim($currItem->get_title());
// tooltip title word limit check
if ( $tooltip_title_words ) {
$t_item_titles = explode( ' ', $t_item_title );
$count = count( $t_item_titles );
if ( $count > $tooltip_title_words ) {
$tooltip_title = '';
for( $i=0; $i < $tooltip_title_words; $i++ ) {
$tooltip_title .= ' '. $t_item_titles[$i];
}
$tooltip_title .= '...';
}else{
$tooltip_title = $t_item_title;
}
}else{
$tooltip_title = $t_item_title;
}
$tooltip_title = preg_replace("/(\r\n|\n|\r)/", " ", $tooltip_title); //replace new line characters in tooltip title, important!
$tooltip_title = htmlspecialchars(html_entity_decode($tooltip_title), ENT_QUOTES); //format text for tooltip
$slick_rss['items'][$slick_rss_item]['tooltip']['title'] = $tooltip_title; //Tooltip Title
//tooltip item description
$text = trim($currItem->get_description());
if(!$tooltip_desc_images){
$text = preg_replace("/<img[^>]+\>/i", "", $text);
}
// tooltip desc word limit check
if ( $tooltip_desc_words ) {
$texts = explode( ' ', $text );
$count = count( $texts );
if ( $count > $tooltip_desc_words ) {
$text = '';
for( $i=0; $i < $tooltip_desc_words; $i++ ) {
$text .= ' '. $texts[$i];
}
$text .= '...';
}
}
$text = preg_replace("/(\r\n|\n|\r)/", " ", $text); //replace new line characters in tooltip, important!
$text = htmlspecialchars(html_entity_decode($text), ENT_QUOTES); //format text for tooltip
$slick_rss['items'][$slick_rss_item]['tooltip']['description'] = $text; //Tooltip Body
}else{
$slick_rss['items'][$slick_rss_item]['tooltip'] = array(); //blank
}
$slick_rss_item++; //increment item counter
}
} //end item quantity check if statement
//return the feed data structure for the template
return $slick_rss;
}
}