root/trunk/gregarius/admin/dashboard.php

<?php
###############################################################################
# Gregarius - A PHP based RSS aggregator.
# Copyright (C) 2003 - 2006 Marco Bonetti
#
###############################################################################
# This program is free software and open source software; you can redistribute
# it and/or modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the License,
# or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.      See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA  or visit
# http://www.gnu.org/licenses/gpl.html
#
###############################################################################
# E-mail:          mbonetti at gmail dot com
# Web page:        http://gregarius.net/
#
###############################################################################


function dashboard() {
    $idtoken = _VERSION_ . "-" . md5($_SERVER["HTTP_HOST"]);
    
    $magpieCacheAge = 60*60*24;

    if (function_exists('apache_request_headers')) {
        $hdrs = apache_request_headers();
        if (
            (isset($hdrs['Pragma']) && $hdrs['Pragma']=='no-cache') ||
            (isset($hdrs['Cache-Control']) && $hdrs['Cache-Control']=='no-cache')) {
            $magpieCacheAge = 0;
        }
    }
        define ('MAGPIE_FETCH_TIME_OUT',2);
    define ('MAGPIE_CACHE_AGE', $magpieCacheAge);
    $rs = rss_query(
    "select id, title, position, url, obj, unix_timestamp(daterefreshed), itemcount "
    ." from " . getTable('dashboard') . " order by position asc");
    $rss = array();
    while (list($id, $title,$pos,$url,$obj, $ts, $cnt) = rss_fetch_row($rs)) {
        if ($obj && (time() - $ts < $magpieCacheAge)) {
                $rss[$title] = unserialize($obj);
        } else {
                $old_level = error_reporting(E_ERROR);
                $rss[$title]  = fetch_rss($url.$idtoken);
                error_reporting($old_level);
                if ($rss[$title] && is_object($rss[$title])) {
                        $rss[$title] -> items = array_slice($rss[$title] -> items, 0, $cnt);
                        rss_query('update ' .getTable('dashboard') . " set obj='"
                                .rss_real_escape_string(serialize($rss[$title])). "', "
                                ." daterefreshed=now()  where id=$id");
                }
        }
        
        if ($rss[$title] && is_object($rss[$title])) {
                if ($pos == 0) {
                                                echo "
                                                        <h2 style=\"margin-bottom: 0.5em\">$title</h2>
                                                        <div id=\"db_main\">
                                                        <ul>";
                                foreach ($rss[$title] -> items as $item) {
                                                        echo "<li class=\"item unread\">\n"
                                                                ."<h4><a href=\"".$item['link']."\">".$item['title']."</a></h4>\n"
                                                                ."<h5>Posted: " .time_since(strtotime($item['pubdate'])) . " ago </h5>\n"
                                                                ."<div class=\"content\">" . $item['content']['encoded'] ."</div>\n</li>\n";                                    
                                }
                                echo "</ul></div>\n";                           
                } else {
            echo "<div class=\"frame db_side\">\n";
                                        db_side($title,$rss[$title]);
                                        echo "</div>";                  
                }
        }
    }
}

function db_side($title,&$rss) {
    echo "<h3>$title</h3>\n"
    ."<ul>";
    foreach ($rss -> items as $item) {
        //              var_dump($item);
        echo "<li>\n"
        ."<h5><a href=\"".htmlentities($item['link'])."\">".$item['title']."</a></h5>"
        //                      ."By " . $item['dc']['author'] . ", " . time_since(strtotime($item['pubdate'])) . " ago"
        ."</li>\n";
    }
    echo "</ul>\n";
}

/*
Plugin Name: Dunstan's Time Since 
Plugin URI: http://binarybonsai.com/archives/2004/08/17/time-since-plugin/
Description: Tells the time between the entry being posted and the comment being made.
Author: Michael Heilemann & Dunstan Orchard
Author URI: http://binarybonsai.com
Version: 1.0
*/
function time_since($older_date, $newer_date = false) {
    // array of time period chunks
    $chunks = array(
                  array(60 * 60 * 24 * 365 , 'year'),
                  array(60 * 60 * 24 * 30 , 'month'),
                  array(60 * 60 * 24 * 7, 'week'),
                  array(60 * 60 * 24 , 'day'),
                  array(60 * 60 , 'hour'),
                  array(60 , 'minute'),
              );

    // $newer_date will equal false if we want to know the time elapsed between a date and the current time
    // $newer_date will have a value if we want to work out time elapsed between two known dates
    $newer_date = ($newer_date == false) ? (time()) : $newer_date;

    // difference in seconds
    $since = $newer_date - $older_date;

    // we only want to output two chunks of time here, eg:
    // x years, xx months
    // x days, xx hours
    // so there's only two bits of calculation below:

    // step one: the first chunk
    for ($i = 0, $j = count($chunks); $i < $j; $i++) {
        $seconds = $chunks[$i][0];
        $name = $chunks[$i][1];

        // finding the biggest chunk (if the chunk fits, break)
        if (($count = floor($since / $seconds)) != 0) {
            break;
        }
    }

    // set output var
    $output = ($count == 1) ? '1 '.$name : "$count {$name}s";

    // step two: the second chunk
    if ($i + 1 < $j) {
        $seconds2 = $chunks[$i + 1][0];
        $name2 = $chunks[$i + 1][1];

        if (($count2 = floor(($since - ($seconds * $count)) / $seconds2)) != 0) {
            // add to output var
            $output .= ($count2 == 1) ? ', 1 '.$name2 : ", $count2 {$name2}s";
        }
    }

    return $output;
}
?>