// ==UserScript==
// @name Show Competitors
// @description Displays a list of related websites (competitors) based del.icio.us "related pages"
// @include http://*
// ==/UserScript==
// author: Piotr Zielinski
// www: http://www.cl.cam.ac.uk/~pz215/
// licence: GPL
// MD5 stuff (stolen from another greasemonkey script, don't remember the name)
function hex_md5(s) {
return binl2hex(core_md5(str2binl(s), s.length * 8));
}
function core_md5(x, len) {
x[len >> 5] |= 0x80 << ((len) % 32);
x[(((len + 64) >>>9) << 4) + 14] = len;
var a = 1732584193;
var b = -271733879;
var c = -1732584194;
var d = 271733878;
for (var i = 0; i < x.length; i += 16) {
var olda = a;
var oldb = b;
var oldc = c;
var oldd = d;
a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936);
d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586);
c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819);
b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330);
a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897);
d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426);
c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341);
b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983);
a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416);
d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417);
c = md5_ff(c, d, a, b, x[i + 10], 17, -42063);
b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162);
a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682);
d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101);
c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290);
b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329);
a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510);
d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632);
c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713);
b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302);
a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691);
d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083);
c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335);
b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848);
a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438);
d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690);
c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961);
b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501);
a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467);
d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784);
c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473);
b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734);
a = md5_hh(a, b, c, d, x[i + 5], 4, -378558);
d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463);
c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562);
b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556);
a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060);
d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353);
c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632);
b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640);
a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174);
d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222);
c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979);
b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189);
a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487);
d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835);
c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520);
b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651);
a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844);
d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415);
c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905);
b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055);
a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571);
d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606);
c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523);
b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799);
a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359);
d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744);
c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380);
b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649);
a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070);
d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379);
c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259);
b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551);
a = safe_add(a, olda);
b = safe_add(b, oldb);
c = safe_add(c, oldc);
d = safe_add(d, oldd);
}
return Array(a, b, c, d);
}
function md5_cmn(q, a, b, x, s, t) {
return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b);
}
function md5_ff(a, b, c, d, x, s, t) {
return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t) {
return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t) {
return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t) {
return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}
function safe_add(x, y) {
var lsw = (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xFFFF);
}
function bit_rol(num, cnt) {
return (num << cnt) | (num >>>(32 - cnt));
}
function str2binl(str) {
var bin = Array();
var mask = (1 << 8) - 1;
for (var i = 0; i < str.length * 8; i += 8) {
bin[i >> 5] |= (str.charCodeAt(i / 8) & mask) << (i % 32);
}
return bin;
}
function binl2hex(binarray) {
var hex_tab = '0123456789abcdef';
var str = '';
for (var i = 0; i < binarray.length * 4; i++) {
str += hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8 + 4)) & 0xF) + hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8)) & 0xF);
}
return str;
}
// end MD5 stuff
function addGlobalStyle(css) {
var head, style;
head = document.getElementsByTagName('head')[0];
if (!head) { return; }
style = document.createElement('style');
style.type = 'text/css';
style.innerHTML = css;
head.appendChild(style);
}
function prepare() {
var site = document.URL.match(new RegExp("(https?://[A-Za-z0-9.]+/).*"))[1];
var body = document.getElementsByTagName("body")[0];
var head = document.getElementsByTagName("head")[0];
var node = document.createElement('div');
node.innerHTML = "<a id='competitor-header'>C</a>" +
"<div id='competitor-rest'><ol id='competitor-list'></ol>" +
"<a id='competitor-refresh'>refresh</a> " +
"<a href='http://del.icio.us/url/check?url=" + site +
"'>del.icio.us</a> " +
"<a href='http://labs.google.com/sets?hl=en&q1=" + site +
"'>google sets</a> " +
"<a href='http://www.google.com/search?hl=en&lr=&q=related%3A" + site +
"'>google related</a> " +
"</div>";
addGlobalStyle("div.competitor a { color: #00f; cursor: pointer; text-decoration: underline; } ");
addGlobalStyle("div.competitor { font: 11px sans; } ");
body.insertBefore(node, body.firstChild);
var header = document.getElementById("competitor-header");
var rest = document.getElementById("competitor-rest");
var list = document.getElementById("competitor-list");
var fetch = document.getElementById("competitor-refresh");
node.className = "competitor";
node.style.display = "block";
node.style.backgroundColor = "#ddf";
node.style.border = "1px solid #000";
node.style.position = 'absolute';
node.style.top = '0px';
node.style.right = '0px';
node.style.padding = "1ex";
node.style.margin = "0ex";
node.style.zIndex = '200';
header.style.display = "block";
header.style.cursor = 'pointer';
header.style.padding = "0ex";
header.style.textAlign = "center";
header.style.margin = "0ex";
header.addEventListener("click", showcompetitorlist, false);
rest.style.display = "none";
list.style.display = "block";
list.style.backgroundColor = "#eef";
list.style.border = "1px solid #000";
list.style.padding = "1ex 4ex 1ex";
list.style.margin = "1ex 0ex 1ex 0ex";
fetch.addEventListener("click", fetchcompetitorlist, false);
var relatedhtml = GM_getValue(site, null);
if (relatedhtml)
applylist(site, relatedhtml);
}
function applylist(site, relatedhtml) {
var header = document.getElementById("competitor-header");
var list = document.getElementById("competitor-list");
list.innerHTML = relatedhtml;
GM_setValue(site, relatedhtml);
}
function showcompetitorlist(event) {
var header = document.getElementById("competitor-header");
var list = document.getElementById("competitor-list");
var rest = document.getElementById("competitor-rest");
rest.style.display = "block";
header.innerHTML = "hide competitors / related sites";
header.removeEventListener("click", showcompetitorlist, false);
header.addEventListener("click", hidecompetitorlist, false);
}
function hidecompetitorlist(event) {
var header = document.getElementById("competitor-header");
var list = document.getElementById("competitor-list");
var rest = document.getElementById("competitor-rest");
rest.style.display = "none";
header.innerHTML = "show competitors / related sites";
header.removeEventListener("click", hidecompetitorlist, false);
header.addEventListener("click", showcompetitorlist, false);
}
function fetchcompetitorlist(event) {
var site = document.URL.match(new RegExp("(https?://[A-Za-z0-9.]+/).*"))[1];
var fetch = document.getElementById("competitor-refresh");
fetch.innerHTML = "refreshing the list ...";
fetch.style.textDecoration = "none";
fetch.removeEventListener("click", fetchcompetitorlist, false);
// GM_log("fetching " + site);
GM_xmlhttpRequest({
method: 'GET',
url: 'http://del.icio.us/url/' + hex_md5(site) + "?related",
headers: {
'User-agent': 'Mozilla/4.0 (compatible) Greasemonkey',
'Accept': 'application/atom+xml,application/xml,text/xml',
},
onload: function(responseDetails) {
var doc = document.createElement('div');
doc.innerHTML = responseDetails.responseText;
var related = doc.getElementsByTagName("ol")[0];
applylist(site, related.innerHTML);
fetch.addEventListener("click", fetchcompetitorlist, false);
fetch.innerHTML = "refresh";
fetch.style.textDecoration = "underline";
}
});
}
prepare();
