mirror of https://github.com/BOINC/boinc.git
85 lines
2.3 KiB
PHP
85 lines
2.3 KiB
PHP
<?php
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// This file is part of BOINC.
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// http://boinc.berkeley.edu
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// Copyright (C) 2021 University of California
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//
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// BOINC is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License
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// as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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//
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// BOINC is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
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// functions for fetching and displaying RSS feeds
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require_once("../inc/cache.inc");
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// parse an RSS feed into objects
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//
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function get_rss_feed($url) {
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$x = @simplexml_load_file($url);
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if (!$x) return null;
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$x = $x->channel;
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$items = array();
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foreach ($x->item as $item) {
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$y = new StdClass;
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$y->title = (string)$item->title;
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$y->link = (string)$item->link;
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$y->description = (string)$item->description;
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$y->pubDate = (string)$item->pubDate;
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$items[] = $y;
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}
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return $items;
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}
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// same, but cache the results; $dur is the refresh period
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//
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function get_rss_feed_cached($url, $dur) {
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$d = get_cached_data($dur, $url);
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if ($d) {
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return unserialize($d);
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}
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$items = get_rss_feed($url);
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if (!$items) return null;
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set_cached_data($dur, serialize($items), $url);
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return $items;
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}
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// Show up to $n items.
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// You can pass a function $filter;
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// if $filter(item) returns true, don't show it.
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//
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function show_rss_items($items, $n=0, $filter=null) {
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$i = 0;
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foreach ($items as $item) {
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if ($filter && $filter($item)) {
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continue;
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}
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echo sprintf(
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'<h4>%s</h4>
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<p>
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%s
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<p>
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<a href=%s>View article</a> · %s
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<hr>
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',
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$item->title,
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$item->description,
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$item->link,
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$item->pubDate
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);
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$i++;
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if ($i == $n) {
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break;
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}
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}
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}
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?>
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