// rss.js
(function(){
if( window.addEventListener )
{
window.addEventListener( "load", initRSS, false );
}
else if( window.attachEvent )
{
window.attachEvent( "onload", initRSS ); // IE
}
var debug = false;
var debugWin;
if( !debugWin && debug )
{
debugWin = window.open(null, "debugWin", "width=500,height=500,scrollbars=yes");
debugWin.document.write('');
}
var numRebuilds = 0;
var ajaxrequests = 0;
var lastupdated = null;
var isIE6 = /msie|MSIE 6/.test(navigator.userAgent);
function initRSS()
{
if( debug ) doDebug();
var now = new Date();
var now = now.getTime();
if( document.getElementById('feed') )
{
sendRequest('/gogreen/chat/feed/feed.xml?t='+now,null,'feed', true);
}
}
function doDebug(msg)
{
if( msg && msg != "" )
{
debugWin.document.getElementById('debug').innerHTML += msg + '
';
debugWin.focus();
}
}
function $(id) { return document.getElementById(id); }
function sendRequest(filePath, params, resultDivName, async)
{
var resultDiv = document.getElementById(resultDivName);
//resultDiv.innerHTML = 'Sorry, the Go Green Mini-Feed could not be retrieved at this time.
';
if( window.XMLHttpRequest)
{
var xmlhr = new XMLHttpRequest();
}
else if( window.ActiveXObject )
{
var xmlhr = new ActiveXObject("Microsoft.XMLHTTP");
if( !xmlhr )
{
var xmlhr = new ActiveXObject("Msxml2.XMLHTTP");
}
}
xmlhr.open('GET', filePath, async);
//xmlhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
xmlhr.onreadystatechange = function()
{
var resultDiv = document.getElementById(resultDivName);
//resultDiv.innerHTML += xmlhr.readyState + '
';
if (xmlhr.readyState == 1) {
resultDiv.innerHTML = 'Loading...';
}
else if( xmlhr.readyState == 4 && xmlhr.status == 200 )
{
if( xmlhr.responseXML )
{
//var html = decodeHTML(xmlhr.responseText);
//$('feed').innerHTML = html;
if( !isIE6 )
document.getElementById('subscribe-div').style.display = 'block';
else
document.getElementById('subscribe-div').style.display = 'none';
//displayMiniFeed(xmlhr.responseXML);
// *************************************************
// TEMPORARY FIX BEGIN ============================v
//
// var now = new Date().getTime();
// lastupdated = checkLastUpdated(xmlhr.responseXML);
// if( lastupdated === null )
// {
// // no file ever written
// //sendRequest('/cgi-bin/atomparser.pl?t='+now,null,'feed', true);
// //doDebug('lastupdated === null' + numRebuilds++);
// resultDiv.innerHTML = 'Sorry, the Go Green Mini-Feed could not be retrieved at this time.
';
// }
// else if( Math.floor((now-lastupdated)/(1000*60*60)) >= 12 ) // rebuild feed.xml every 12 hours
// {
// //sendRequest('/cgi-bin/atomparser.pl?t='+now,null,'feed', true);
// //doDebug(Math.floor((now-lastupdated)/(1000*60*60)));
// resultDiv.innerHTML = 'Sorry, the Go Green Mini-Feed could not be retrieved at this time.
';
// }
// else
// {
// //doDebug('displayMiniFeed' + numRebuilds++);
displayMiniFeed(xmlhr.responseXML);
// }
// TEMPORARY FIX END ==============================^
// *************************************************
}
}
else if( xmlhr.readyState == 4 )
{
resultDiv.innerHTML = 'Sorry, the Go Green Mini-Feed could not be retrieved at this time.
';
}
};
xmlhr.send(params);
}
function checkLastUpdated(xmldoc)
{
var lastup = null;
var root = xmldoc.documentElement;
if( root.hasChildNodes())
{
var nds = root.childNodes;
for( var i = 0; i < nds.length; i++ )
{
if( nds[i].nodeName == 'updated' )
{
lastup = parseAtomTime(nds[i].firstChild.nodeValue, true);
break;
}
}
}
else
{
lastup = null;
}
return lastup;
}
var mfeeds = new Array();
function displayMiniFeed(xmldoc)
{
$('feed').innerHTML = '';
var root = xmldoc.documentElement;
if( root.hasChildNodes())
{
//$('feed').innerHTML += '@ root node';
var nds = root.childNodes;
for( var i = 0; i < nds.length; i++ )
{
//$('feed').innerHTML += 'nds['+i+'].nodeName = ' + nds[i].nodeName + '
';
if( nds[i].hasChildNodes() )
{
//$('feed').innerHTML += 'nds['+i+'].nodeName = ' + nds[i].nodeName + '
';
if( nds[i].nodeName == 'entry' )
{
//$('feed').innerHTML += 'IN ENTRY > '+i+' <
';
var link = '';
var updated = '';
var content = '';
var numcomments = 0;
var ends = nds[i].childNodes;
for( var j = 0; j < ends.length; j++ )
{
if( ends[j].nodeName == 'link' )
{
//$('feed').innerHTML += ' AT LINK > ' + j + ' <
';
var link = ends[j];
if( link.attributes.length > 0 )
{
var oAttr = {};
var found = false;
var attrs = link.attributes;
for( var k = 0; k < attrs.length; k++ )
{
var attr = attrs[k];
if( attr.nodeName == "rel" && attr.nodeValue == "alternate" )
{
found = true;
}
if( found )
{
oAttr[attr.nodeName] = attr.nodeValue;
}
}
if( found )
{
if( oAttr.title == '' )
oAttr.title = 'Impact of Technology on the Environment';
// var a = document.createElement('a');
// a.href = oAttr.href;
// a.target = '_blank';
// a.appendChild(document.createTextNode(stripTags(oAttr.title)));
link = ''+oAttr.title+'';
//'\n attr = ' + attr +
//'\n attr.text = ' + attr.text +
//'\n attr.nodeName = ' + attr.nodeName +
//'\n attr.nodeValue = ' + attr.nodeValue + '';
}
}
} // end if( ends[j].nodeName == 'link' )
else if( ends[j].nodeName == 'updated' )
{
updated = parseAtomTime(ends[j].firstChild.nodeValue,true);
}
else if( ends[j].nodeName == 'content' )
{
content = stripTags(stripAnchors(decodeHTML(ends[j].firstChild.nodeValue)));
content = content.substr(0,250);
content = content.substring(0,content.lastIndexOf(' ')) + '...';
}
else if( ends[j].nodeName == 'thr:total' )
{
numcomments = ends[j].firstChild.nodeValue;
}
} // for( var j = 0; j < ends.length; j++ )
mfeeds.push(
{
link:link,
updated:updated,
content:content,
numcomments:numcomments
});
}
}
}
}
if( mfeeds.length > 0 )
{
mfeeds.sort(sorter);
$('feed').innerHTML += '';
var tease = '';
var html = '';
for( var i = 0; i < mfeeds.length; i++ )
{
html += '- ' + mfeeds[i].link + '
' + new Date(mfeeds[i].updated).toLocaleString() + ' ';
tease += '' + mfeeds[i].link + '
' +
'' +
'Posted on ' + new Date(mfeeds[i].updated).toLocaleString() +
' (' + mfeeds[i].numcomments + ' comments)' +
'
' +
'' + mfeeds[i].content + '
';
}
$('feed').innerHTML += html + '
';
if( $('teaser') )
$('teaser').innerHTML = tease;
}
// if( mfeeds.length > 0 )
// {
// mfeeds.sort(sorter);
//
// var tease = document.createElement('div');
// var feed = document.createElement('ul');
// for( var i = 0; i < mfeeds.length; i++ )
// {
// var li = document.createElement('li');
// li.appendChild(mfeeds[i].link);
// li.appendChild(document.createElement('br'));
// li.appendChild(document.createTextNode(mfeeds[i].updated).toLocaleString()));
//
// feed.appendChild(li);
//
// var h3 = document.createElement('h3');
// h3.className = 'teaser-title';
// h3.appendChild(mfeeds[i].link);
//
// tease.appendChild(h3);
//
// var div = document.createElement('div');
// div.className = 'teaser-subtitle';
// div.appendChild(document.createTextNode('Posted on ' + new Date(mfeeds[i].updated).toLocaleString() + ' (' + mfeeds[i].numcomments + ' comments)'));
//
// tease.appendChild(div);
//
// div = document.createElement('div');
// div.className = 'teaser-content';
// div.appendChild(document.createTextNode(mfeeds[i].content));
//
// tease.appendChild(div);
// }
//
// document.getElementById('feed').appendChild( feed );
//
// if( document.getElementById('teaser') )
// document.getElementById('teaser').appendChild( tease );
// }
}
function sorter(a,b)
{
var ret = 0;
var date1 = a.updated;
var date2 = b.updated;
if( date1 > date2 )
ret = -1;
else if( date1 == date2 )
ret = 0;
else if( date1 < date2 )
ret = 1;
return ret;
}
function stripAnchors(str)
{
return str.replace(/]+>[^<]+<\/a>/gi,'');
}
function stripTags(str)
{
return str.replace(/<\/?[^>]+>/gi, '');
}
function parseAtomTime(sTime,getSecs)
{
// time is of the format: 2009-03-12T10:17:12.128-07:00
var tparts = sTime.split('T');
var date = tparts[0];
var time = tparts[1];
var dparts = date.split('-');
var year = dparts[0];
var month = dparts[1];
var dom = dparts[2];
var tparts = time.split('-');
var hms = tparts[0];
var tz = tparts[1];
var hms2 = hms.split(':');
var hours = hms2[0];
var mins = hms2[1];
var secs = hms2[2];
var secms = secs.split('.');
var scs = secms[0];
var ms = secms[1];
var ret = 0;
if( !getSecs)
{
var dt = new Date(parseInt(year),parseInt(month)-1,parseInt(dom),hours,mins,scs,ms);
ret = dt.toLocaleString();
}
else
{
var dt = new Date(parseInt(year),parseInt(month)-1,parseInt(dom),hours,mins,scs,ms);
ret = dt.getTime();
}
return ret;
}
//if( nds[i].hasChildNodes() )
//$('results').innerHTML += nds[i].firstChild.nodeValue + "
";
// else
// $('results').innerHTML += 'EMPTY
';
// from newsfox source: file.js
/**
* Return original HTML from encoding.
*/
function decodeHTML(s)
{
s = s.replace(new RegExp('&' ,'gi'), '&');
s = s.replace(new RegExp('<' ,'gi'), '<');
s = s.replace(new RegExp('>' ,'gi'), '>');
s = s.replace(new RegExp('"' ,'gi'), '"');
s = s.replace(new RegExp('´','gi'), 'ยด');
return s;
}
})();