From 15645cb85ce5ec986cf439c9704bae6114cc3629 Mon Sep 17 00:00:00 2001
From: "David A. Madore" <david+git@madore.org>
Date: Sun, 1 Apr 2012 20:55:11 +0200
Subject: April's fool.

---
 org/madore/damlengine/included.js | 60 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)

(limited to 'org/madore/damlengine')

diff --git a/org/madore/damlengine/included.js b/org/madore/damlengine/included.js
index 7aa2a2b..9c035bd 100644
--- a/org/madore/damlengine/included.js
+++ b/org/madore/damlengine/included.js
@@ -1,4 +1,7 @@
+"use strict";
+
 var textNodeType;
+
 function textContent(n) {
     if ( n.nodeType == textNodeType ) {
 	return n.data;
@@ -11,6 +14,7 @@ function textContent(n) {
 	return t;
     }
 }
+
 function despam() {
     // MSIE seems to barf...  Deactivate for now
     if ( (/MSIE *[1-6]\./).test(navigator.userAgent) )
@@ -44,6 +48,61 @@ function despam() {
 	}
     }
 }
+
+function permuteWord(s) {
+    if ( s.length <= 3 )
+	return s;
+    var tab = s.split("");
+    var n = tab.length - 1;
+    for ( var i=1 ; i<n ; i++ ) {
+	var j = i + Math.floor(Math.random()*(n-i));
+	if ( j == i )
+	    continue;
+	var tmp = tab[j];
+	tab[j] = tab[i];
+	tab[i] = tmp;
+    }
+    return tab.join("");
+}
+
+function permuteString(s) {
+    return s.replace(/[A-Za-zÀ-ÿ]+/g, permuteWord);
+}
+
+function permuteDoc(doc) {
+    var body = doc.body;
+    var walker = doc.createTreeWalker(body, NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_TEXT, null, false);
+    var node = walker.nextNode();
+    while ( node ) {
+	if ( node.nodeType == Node.TEXT_NODE ) {
+	    var thisnode = node;
+	    node = walker.nextNode();
+	    var str = permuteString(thisnode.nodeValue);
+	    thisnode.parentNode.replaceChild(doc.createTextNode(str), thisnode);
+	} else if ( node.nodeType == Node.ELEMENT_NODE
+		    && ( node.localName == "pre"
+			 || node.localName == "code"
+			 || node.localName == "script"
+			 || node.localName == "style" ) ) {
+	    do {
+		node = walker.nextSibling();
+		if ( node )
+		    break;
+		node = walker.parentNode();
+		if ( ! node )
+		    break;
+	    } while ( true );
+	} else
+	    node = walker.nextNode();
+    }
+}
+
+function aprilsFool() {
+    var today = new Date();
+    if ( today.getMonth() == 3 && today.getDate() == 1 )
+	permuteDoc(window.document);
+}
+
 function onLoad() {
     // Start with some bugware...
     try {
@@ -53,4 +112,5 @@ function onLoad() {
     }
     // Now despam email adresses.
     despam();
+    aprilsFool();
 }
-- 
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