// /////////////////
// foaf-discovery.user.js
// $Author: greg $
// $Date: 2005-04-21 18:00:10 -0700 (Thu, 21 Apr 2005) $
// $Rev: 35 $
////////////////////
// userscript metadata follows...
// ==UserScript==
// @name FOAF Discovery
// @namespace http://greg.vario.us/ns/greasemonkey
// @description Basic auto-discovery of FOAF data
// @include http://*
// @include https://*
// ==/UserScript==
//
(function() {
var NSFOAF="http://xmlns.com/foaf/0.1/";
var NSRDF="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
var NSRDFS="http://www.w3.org/2000/01/rdf-schema#";
var NS=new Array();
var PREF=new Array();
var Props= new Array();
Props[NSFOAF+"name"]= "foafName";
Props[NSFOAF+"firstName"]="foafFirstName";
Props[NSFOAF+"surname"]="foafSurname";
Props[NSFOAF+"nick"]="foafNick";
Props[NSFOAF+"mbox_sha1sum"]="foafMboxSha1Sum";
Props[NSFOAF+"homepage"]="foafHomepage";
Props[NSFOAF+"depiction"]="foafDepiction";
Props[NSFOAF+"workplaceHomepage"]="foafWorkplaceHomepage";
Props[NSFOAF+"workInfoHomepage"]="foafWorkInfoHomepage";
Props[NSFOAF+"schoolHomepage"]="foafSchoolHomepage";
Props[NSFOAF+"phone"]="foafPhone";
Props[NSFOAF+"mbox"]="foafMbox";
Props[NSRDFS+"seeAlso"]="rdfsSeeAlso";
var FOAF_EXPLORER_ICON='data:image/png;base64,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';
var FOAF = {
rdfUri: function(node){
if(m = String(node.nodeName).match(/^([^:]+)(:(.*?))?$/)){
if(m[3] && PREF[m[1]]){
return PREF[m[1]]+m[3];
}else if(!m[3] && PREF['']){
return PREF['']+m[1];
}
}
return null;
},
findAttrVal: function(ns,ln,n){
for(var i=0;i<n.attributes.length;i++){
var att = n.attributes.item(i);
if(FOAF.rdfUri(att)==ns+ln){
return att.nodeValue;
}
}
return null;
},
findTextVal: function(n){
if(n.firstChild && n.firstChild.nodeType==Node.TEXT_NODE)
return n.firstChild.nodeValue;
return null;
},
findAttrOrText: function(ns,ln,node){
var a = FOAF.findAttrVal(ns,ln,node);
if(a) return a;
return FOAF.findTextVal(node);
},
parsePerson: function(node){
var pp=new Object();
var ps = new Array();
var knows = new Array();
var n = node.firstChild;
while(n){
var uri = FOAF.rdfUri(n);
if(Props[uri]){
ps[Props[uri]]=FOAF.findAttrOrText(NSRDF,"resource",n);
}else if(uri==NSFOAF+"img"){
var z=FOAF.findAttrOrText(NSRDF,"resource",n);
if(z && z.match(/^http/i)){
ps['foafImg']=z;
}else if(n.firstChild){
var t = n.firstChild;
while(t){
if(FOAF.rdfUri(t)==NSFOAF+"Image"){
z = FOAF.findAttrVal(NSRDF,"about",t);
if(z){
ps['foafImg']=z;
break;
}
}
t=t.nextSibling;
}
}
}
else if(uri==NSFOAF+"knows"){
var t= n.firstChild;
while(t){
if(FOAF.rdfUri(t)==NSFOAF+"Person"){
knows.push(FOAF.parsePerson(t));
break;
}
t=t.nextSibling;
}
}
n=n.nextSibling;
}
ps["knows"] = knows;
return ps;
},
renderPersonNameLink: function(pers){
var name=FOAF.renderPersonName(pers);
var link = pers['foafHomepage'];
if(!link) link= pers['foafWorkplaceHomepage'];
if(!link) link= pers['foafWorkInfoHomepage'];
if(!link) link= pers['foafSchoolHomepage'];
if(!link) link= pers['foafMbox'];
if(!link) link= pers['rdfsSeeAlso'];
var a;
if(link){
a = document.createElement("a");
a.href=link;
}else{
a = document.createElement("span");
}
if(pers['foafImg'] || pers['foafDepiction']){
var i = document.createElement("img");
var u = pers['foafImg'];
if(!u) u=pers['foafDepiction'];
i.src=u;
i.width="16";
i.height="16";
a.appendChild(i);
a.appendChild(document.createTextNode(name));
}else{
a.innerHTML=name;
}
return a;
},
renderPersonName: function(pers){
var name="(Unknown Person)";
if(pers['foafFirstName'] && pers['foafSurname']){
name=pers['foafFirstName'];
if(pers['foafNick']){
name+=" \""+pers['foafNick']+"\"";
}
name+=" "+pers['foafSurname'];
}else if(pers['foafName']){
name=pers['foafName'];
if(pers['foafNick']){
name+=" \""+pers['foafNick']+"\"";
}
}
else if(pers['foafNick']) {
name="\"" + pers['foafNick'] + "\"";
}
return name;
},
renderPerson: function(pers,url){
var div = document.createElement("div");
div.setAttribute("class","foafPerson");
var name=FOAF.renderPersonName(pers);
var ln = document.createElement("a");
ln.href=url;
ln.setAttribute("title","FOAF source: "+url);
ln.innerHTML="[FOAF]";
if(pers['foafImg'] || pers['foafDepiction']){
var ai = document.createElement("a");
var u = pers['foafImg'];
if(!u) u=pers['foafDepiction'];
ai.href=u;
var img = document.createElement("img");
img.src=u;
img.width="32";
img.height="32";
ai.appendChild(img);
div.appendChild(ai);
}
if(pers['foafHomepage']){
var a = document.createElement("a");
a.href=pers['foafHomepage'];
a.innerHTML=name;
a.setAttribute("title","Homepage");
div.appendChild(a);
}else{
div.innerHTML+=" "+name;
}
if(pers['foafMbox']){
var a = document.createElement("a");
a.href=pers['foafMbox'];
a.innerHTML="@";
a.setAttribute("title","Mailbox");
div.innerHTML+=" ";
div.appendChild(a);
}
div.innerHTML+=": ";
var prev=0;
if(pers['foafWorkplaceHomepage']){
var a = document.createElement("a");
a.href=pers['foafWorkplaceHomepage'];
a.innerHTML="Work";
a.setAttribute("title","Workplace Homepage for "+name);
div.innerHTML+=" ";
div.appendChild(a);
prev=1;
}
if(pers['foafWorkInfoHomepage']){
var a = document.createElement("a");
a.href=pers['foafWorkInfoHomepage'];
a.innerHTML="Work Info";
a.setAttribute("title","Workplace Info Page for "+name);
div.innerHTML+= prev>0?", ":" ";
div.appendChild(a);
prev=1;
}
if(pers['foafSchoolHomepage']){
var a = document.createElement("a");
a.href=pers['foafSchoolHomepage'];
a.innerHTML="School";
a.setAttribute("title","School Homepage for "+name);
div.innerHTML+= prev>0?", ":" ";
div.appendChild(a);
prev=1;
}
div.innerHTML+=". ";
var ka = document.createElement("a");
ka.setAttribute("onclick","var i=document.getElementById(\"foafKnows\");if(i.style.display==\"none\"){i.style.display=\"inline\";}else{i.style.display=\"none\";}");
ka.innerHTML+=" [knows: "+pers['knows'].length+" »]";
ka.setAttribute("title","knows: "+pers['knows'].length+" people. Click to view/hide");
ka.style.cursor="pointer";
div.appendChild(ka);
var dd = document.createElement("span");
dd.style.display="none";
dd.setAttribute("id","foafKnows");
if(pers['knows'] && pers['knows'].length>0){
var l = document.createElement("ul");
for(var i=0;i<pers['knows'].length;i++){
var li = document.createElement("li");
li.appendChild(FOAF.renderPersonNameLink(pers['knows'][i]));
if(pers['knows'][i]['rdfsSeeAlso']){
var ex = document.createElement("a");
ex.setAttribute("href", "http://xml.mfd-consult.dk/foaf/explorer/?foaf=" + escape(pers['knows'][i]['rdfsSeeAlso']))
var ex_img = document.createElement("img");
// Embedded image, see http://rifers.org/blogs/gbevin/2005/4/11/embedding_images_inside_html
ex_img.src=FOAF_EXPLORER_ICON;
ex_img.width="16";
ex_img.height="16";
ex_img.style.border="0";
ex.appendChild(ex_img);
li.appendChild(document.createTextNode(" "));
li.appendChild(ex);
}
l.appendChild(li);
}
dd.appendChild(l);
}
var ex = document.createElement("a");
ex.setAttribute("href", "http://xml.mfd-consult.dk/foaf/explorer/?foaf=" + escape(url))
var ex_img = document.createElement("img");
// Embedded image, see http://rifers.org/blogs/gbevin/2005/4/11/embedding_images_inside_html
ex_img.src=FOAF_EXPLORER_ICON;
ex_img.width="16";
ex_img.height="16";
ex_img.style.border="0";
ex.appendChild(ex_img);
div.appendChild(ln);
div.appendChild(document.createTextNode(" "));
div.appendChild(ex);
div.appendChild(dd);
return div;
}
};
var lnm = window._content.document.getElementsByTagName('link');
var lnh;
var d;
for(var i = 0; i<lnm.length;i++){
if((lnm[i].getAttribute('rel') == 'meta' || lnm[i].getAttribute('REL') == 'meta')
&& (lnm[i].getAttribute('title')=='FOAF' || lnm[i].getAttribute('TITLE')=='FOAF')
&& (lnm[i].getAttribute('type')=='application/rdf+xml' || lnm[i].getAttribute('TYPE')=='application/rdf+xml')){
lnh = lnm[i].getAttribute('href');
if(!lnh){
lnh = lnm[i].getAttribute('HREF');
}
break;
}else{
//alert("link: "+lnm[i]);
}
}
if(!lnh){
lnm = window._content.document.getElementsByTagName('LINK');
for(var i = 0; i<lnm.length;i++){
if((lnm[i].getAttribute('rel') == 'meta' || lnm[i].getAttribute('REL') == 'meta')
&& (lnm[i].getAttribute('title')=='FOAF' || lnm[i].getAttribute('TITLE')=='FOAF')
&& (lnm[i].getAttribute('type')=='application/rdf+xml' || lnm[i].getAttribute('TYPE')=='application/rdf+xml')){
lnh = lnm[i].getAttribute('href');
if(!lnh){
lnh = lnm[i].getAttribute('HREF');
}
break;
}else{
//alert("LINK: "+lnm[i]);
}
}
}
if(!lnh && String(document.location).match(/\.rdf$/)){
//see if current page is foaf.
//XXX: doesn't seem to work correctly? firefox displays the HTML preformatted.
//lnh=String(document.location);
}else if(!lnh){
//lnh="foaf.rdf";//guess
}
var callback = function(details){
if(details.status=="200"){
var x =details.responseText;
var dp = new DOMParser();
d = dp.parseFromString(String(x),"text/xml");
if(d){
do_parse(d);
}
}
};
if(lnh){
var a = String(document.location);
if(lnh.match(/^\//)){
lnh = a.replace(/(https?:\/\/[^\/]+)\/?.*$/,"$1"+lnh);
}else if(!lnh.match(/^https?:\/\//i)){
lnh = a.replace(/\/?[^\/]*$/,"/"+lnh);
}
//alert("getting: '"+lnh+"'");
try{
GM_xmlhttpRequest({
method:"GET",
url:lnh,
headers:{"Accept":"*/*"},
onload:callback
});
}catch(e){
//alert("error: "+e);
throw e;
}
}
function do_parse(d){
var pt="";
var foafpref;
var rdfpref;
var rdfspref;
var seenrdf;
var seenfoaf;
for(var i=0;i<d.documentElement.attributes.length;i++){
var p = d.documentElement.attributes.item(i);
if(String(p.nodeName).match(/^xmlns:?.*$/)){
var z = (String(p.nodeName).match(/^xmlns:?(.*)$/))[1];
var uri=p.nodeValue;
PREF[z] = uri;
if(NS[uri]){
NS[uri].push(z);
}else{
NS[uri] = [z];
}
}
}
if(NS[NSFOAF] && NS[NSRDF]){
var me;
var pers = d.documentElement.firstChild;
while(pers){
var uri = FOAF.rdfUri(pers);
if(uri==NSFOAF+"Person"){
me=FOAF.parsePerson(pers);
break;
}
pers = pers.nextSibling;
}
if(me){
css = document.createElement("style");
css.setAttribute("type","text/css");
css.innerHTML=".foafPerson {padding:4px;background: #f0f0f0; border-bottom: 1px solid #a3a3a3;margin:0;text-align:left; vertical-align:middle;}"
+".foafPerson img{vertical-align:middle; border:1px solid #aaa;}";
document.body.insertBefore(css,document.body.firstChild);
document.body.insertBefore(FOAF.renderPerson(me,lnh),document.body.firstChild);
}
}
}
})();
