Cloud-to-Butt

cloudtobutt.user.js

// ==UserScript==
// @name s/the cloud/my butt/g
// @description Replaces the word "the cloud" with "my butt".
// @match *://*/*
// ==/UserScript==

function buttize(str) {
  return str.replace(/the cloud/g,"my butt")
    .replace(/the Cloud/g,"my Butt")
    .replace(/The Cloud/g,"My Butt")
    .replace(/THE CLOUD/g,"MY BUTT")
    .replace(/t[Hh][Ee] c[Ll][Oo][Uu][Dd]/g,"my butt")
    .replace(/t[Hh][Ee] C[Ll][Oo][Uu][Dd]/g,"my Butt")
    .replace(/T[Hh][Ee] [Cc][Ll][Oo][Uu][Dd]/g,"My Butt")
}

var replacingContent = false

function replaceTextContent(node) {
  //flag that content is being replaced so the event it generates
  //won't trigger another replacement
  replacingContent = true
  node.textContent = buttize(node.textContent)
  replacingContent = false
}

function changeTextNodes(node) {
  var length, childNodes
  //If this is a text node, buttize it
  if (node.nodeType == Node.TEXT_NODE) {
    replaceTextContent(node)
  //If this is anything other than a text node, recurse any children
  } else {
    childNodes = node.childNodes
    length = childNodes.length
    for(var i=0; i<length; ++i){
      changeTextNodes(childNodes[i])
    }
  }
}

function insertion_listener(event) {
  //change any new text nodes in a node that is added to the body
  changeTextNodes(event.target)
}

function cdm_listener(event) {
  //avoid infinite loop by ignoring events triggered by replacement
  if(!replacingContent){
    replaceTextContent(event.target)
  }
}

changeTextNodes(document.body)
document.title = buttize(document.title)
document.body.addEventListener ("DOMNodeInserted", insertion_listener, false)
document.body.addEventListener ("DOMCharacterDataModified", cdm_listener, false)