Source for "Wikiproxy: Greasemonkey Edition
"
// ==UserScript==
// @name Wikiproxy: Greasemonkey Edition
// @namespace http://www.allpeers.com/blog/greasemonkey
// @description Adds Wikipedia links to key terms in webpages
// @include http://*
// @exclude http://wikiproxy.whitelabel.org/*
// @exclude http://www.theyworkforyou.com/*
// @exclude http://*.wikipedia.*
// ==/UserScript==
// original version by Matthew Gertner
// modified by Valentin Laube to identify Wikipedia links with an icon
// the design of the icon is inspired by the wikipedia icon for external links
(function() {
var iconcolor = 0; // 0 blue, 1 green, 2 red
var icons = [
"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKAgMAAADwXCcuAAAADFBMVEUWJgGkyP%2F%2F%2F%2F8AZv87Gt1vAAAAAXRSTlMAQObYZgAAAC1JREFUCNdjYP7%2FgYF51QYG%2Fv8bGHhXb2BgXg2hzco%2FMNw8z8BgzsDAwMPAAAAtcQzEPgrvTwAAAABJRU5ErkJggg%3D%3D",
"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKAgMAAADwXCcuAAAADFBMVEUbHgGW0nL%2F%2F%2F9SqxuFak3hAAAAAXRSTlMAQObYZgAAAC1JREFUCNdjYP7%2FgYF51QYG%2Fv8bGHhXb2BgXg2hzco%2FMNw8z8BgzsDAwMPAAAAtcQzEPgrvTwAAAABJRU5ErkJggg%3D%3D",
"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKAgMAAADwXCcuAAAADFBMVEUbHgH%2Fq47%2F%2F%2F%2F%2FVBnJ4fJlAAAAAXRSTlMAQObYZgAAAC1JREFUCNdjYP7%2FgYF51QYG%2Fv8bGHhXb2BgXg2hzco%2FMNw8z8BgzsDAwMPAAAAtcQzEPgrvTwAAAABJRU5ErkJggg%3D%3D"
];
var icons2 = [
"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs%2B9AAAAeElEQVQY02NkQAIB0%2F7%2FZ8ABWNAF1mdiKgqczsDASMi09ZkQhSgmFjozMNipoZoEA0wwxoYsRsb%2BvQw4AROy1YXOuBUyIyuyU2NgOHSLgaFgFQODFD8Dw4n7DAwrzyCZdPDm%2F%2F%2F%2F%2F0NomKcCpiHYKOGHrAgvIKQIAECSPtEmaizfAAAAAElFTkSuQmCC",
"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs%2B9AAAAi0lEQVQY02NkQAIdR5P%2FM%2BAALOgC5VZzMBR1HkthYCRkWrnVHIbOYymoJupLWzN4yCeimAQDTDBGhfVcxotPj%2BJyIkJhx9Hk%2F%2FrS1jgVMiIr8pBPZNjxcD7DxadHGfSlrRlQbOg4mvx%2F%2B4N5%2F%2F%2F%2F%2F%2F9%2F%2B4N5%2F2Ge6jia%2FB%2FDgzDF%2BMKRqMBmYGBgAAApFkF%2BHyXzbAAAAABJRU5ErkJggg%3D%3D",
"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs%2B9AAAAf0lEQVQY042QyxGCQBBE36BRQQ4UKSw5QA4sOeDVo5gDxOCdQNqDfN1asS8zNfWqa7qNneSdiOgaXKoupNoSO3WrOmjLL8esgDQ%2FOC1KlsXqmzE8Yi9uoLwTWREFLwcozWF8wr0BM5heMPabk4Zekj5zDiXvFARc4R89%2FlU2wBsinj50jQNjuAAAAABJRU5ErkJggg%3D%3D"
];
var bgprefix = "url("
var bgsuffix = ") center right no-repeat";
function addWikiLinkStyle()
{
var wikiLinkStyle = document.createElement('style');
wikiLinkStyle.id = "wikilinkstyle";
wikiLinkStyle.type = "text/css";
wikiLinkStyle.innerHTML = '.wikilink, .wikilink_over {\n'
+ 'color: inherit;\n'
+ 'padding-right: 13px;\n'
+ '}\n'
+ '.wikilink {\n'
+ 'background: transparent ' + bgprefix + icons[iconcolor] + bgsuffix + ';\n'
+ '}\n'
+ '.wikilink_over {\n'
+ 'background: transparent ' + bgprefix + icons2[iconcolor] + bgsuffix + ';\n'
+ '}';
document.getElementsByTagName('head')[0].appendChild(wikiLinkStyle);
}
var requestUrl = "http://wikiproxy.whitelabel.org/xml.php";
var wikipediaUrlPrefix = "http://en.wikipedia.org/wiki/";
var excludeAncestors = new Array("a", "script", "style", "input", "textarea", "select", "option");
var excludeXPath = "ancestor::*[";
for (var tagNum=0; tagNum<excludeAncestors.length; tagNum++)
excludeXPath += (tagNum == 0 ? "" : " or ") + "self::" + excludeAncestors[tagNum];
excludeXPath += "]";
// Regular expression definitions from News Wikiproxy
var capsword = "A|[A-Z][a-zA-Z'0-9]{1,}"; // not starting with number, as catches too much
var fillerwords = "a|of|and|in|on|under|the";
var middlewordre = "(" + capsword + "|" + fillerwords + "|[A-Z]\.)[ \\t]*";
var endwordre = "(" + capsword + ")[ \\t]*"; // and, of etc. can't appear at ends
var acronymre = "\\b([A-Z][A-Z0-9]{2,})\\b";
// Match either "Two Endwords" or "Endword and Some Middle Words"
var greedyproperre = "\\b(" + endwordre + "(" + middlewordre + ")*" + endwordre + ")\\b";
// Match without filler words (so if you have a phrase like
// "Amnesty International and Human Rights Watch" you also get both parts
// separately "Amnesty International" and "Human Rights Watch")
var frugalproperre = "\\b((" + endwordre + "){2,})\\b";
var usedTerms = new Array();
function getTerms(str, regexpstr, terms)
{
var candidates = str.match(new RegExp(regexpstr, "mg"));
for (var i=0; i<candidates.length; i++)
{
var term = candidates[i];
while (term.charAt(term.length-1) == " ")
term = term.substring(0, term.length-1);
if (usedTerms[term] == null)
{
if (terms.length > 0)
terms += " ";
terms += term.replace(/ /g, "_");
usedTerms[term] = term;
}
}
return terms;
}
if (document.documentElement.tagName == "HTML")
{
var treeWalker = document.createTreeWalker(document.documentElement, NodeFilter.SHOW_TEXT, null, false);
var text = "";
var textNode;
while (textNode = treeWalker.nextNode())
{
if (!document.evaluate("ancestor::script", textNode, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue)
text += textNode.nodeValue + "\n";
}
var terms = getTerms(text, greedyproperre, "");
terms = getTerms(text, frugalproperre, terms);
terms = getTerms(text, acronymre, terms);
GM_xmlhttpRequest({
method: 'POST',
url: requestUrl,
headers: {
'User-agent': 'Mozilla/4.0 (compatible) Greasemonkey',
'Content-type': 'application/x-www-form-urlencoded'
},
data: 'text=' + escape(terms),
onload: function(responseDetails) {
var parser = new DOMParser();
var responseXML = parser.parseFromString(responseDetails.responseText, "text/xml");
var termSnapshot = responseXML.evaluate("/wikiproxy/term/text()", responseXML, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
var normalizedTerms = new Array();
var termRegExp = "";
for (var i=0; i<termSnapshot.snapshotLength; i++)
{
var termNodeValue = termSnapshot.snapshotItem(i).nodeValue.replace(/_/g, " ");
normalizedTerms[termNodeValue.toLowerCase()] = termNodeValue;
if (termRegExp.length > 0)
termRegExp += "|";
termRegExp += termNodeValue;
}
termRegExp = new RegExp("\\b(" + termRegExp + ")\\b", "mg");
treeWalker = document.createTreeWalker(document.documentElement, NodeFilter.SHOW_TEXT, null, false);
while (textNode = treeWalker.nextNode())
{
if (responseXML.evaluate(excludeXPath, textNode, null,
XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue)
continue;
var matches = textNode.nodeValue.match(termRegExp);
if (!matches)
continue;
// add wiki link style
if (!document.getElementById('wikilinkstyle')) {
addWikiLinkStyle();
}
for (i=0; i<matches.length; i++)
{
var term = matches[i];
if(!term)continue;
var displayTerm = term.replace(/_/g, " ");
term = normalizedTerms[term.toLowerCase()];
var termIndex = textNode.nodeValue.indexOf(displayTerm);
var preTermNode = document.createTextNode(textNode.nodeValue.substring(0, termIndex));
textNode.nodeValue = textNode.nodeValue.substring(termIndex+displayTerm.length);
var anchor = document.createElement("a");
anchor.className = "wikilink";
anchor.onmousemove = function () {this.className = 'wikilink_over';};
anchor.onmouseout = function () {this.className = 'wikilink';};
anchor.href = wikipediaUrlPrefix + term;
var termNode = document.createTextNode(displayTerm);
anchor.insertBefore(termNode, anchor.firstChild);
textNode.parentNode.insertBefore(preTermNode, textNode);
textNode.parentNode.insertBefore(anchor, textNode);
}
}
}
});
}
if (window.GM_registerMenuCommand) {
function undoWikify()
{
var wlinks = document.evaluate('//a[@class="wikilink"]', document, null,
XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
// GM_log(wlinks.snapshotLength + ' wikilinks found.');
for (var i = 0; i < wlinks.snapshotLength; i++) {
var wlink = wlinks.snapshotItem(i);
var text = document.createTextNode(wlink.textContent);
wlink.parentNode.replaceChild(text, wlink);
}
}
GM_registerMenuCommand('Undo Wikify', undoWikify);
}
})();
