User:Splarka/encodeeverything.js

/* Over-Encode URLs, version [0.0.1]
Originally from: http://en.wikipedia.org/wiki/User:Splarka/encodeeverything.js

safe to encode,  everything but:
  mw.config.get('wgServer') + mw.config.get('wgArticlePath')
  wgServer
  * + wgArticlePath
  %2F /  %5C \  %3F ?  
  %3D =  %26 &  %2B +
*/

addOnloadHook(function() {
  if(window.encodeStuffAllLinksAuto) {
    encodeStuffAllLinks();
    return;
  }
  mw.util.addPortletLink('p-tb','javascript:encodeStuffAllLinks();','Encode links','t-encode','Encode the hell out of all links on this page, yeah!');
});

function encodeStuffAllLinks() {
  var a = document.getElementsByTagName('a');
  for(var i=0;i<a.length;i++) {
    href = a[i].getAttribute('href',2)
    if(!href) continue
    var ap = wgArticlePath.replace(/\$1$/ig,'');
    var sp = wgScriptPath + '/';
    if(href.indexOf(ap) != -1) {
      //contains '/wiki/'
      var nhref = href.substring(0,href.indexOf(ap) + ap.length) + encodeStuff(href.substring(href.indexOf(ap) + ap.length));
      a[i].setAttribute('href',nhref);
    } else if(href.indexOf(sp) == 0) {
      //starts with '/w/'
      var nhref = encodeStuff(href);
      a[i].setAttribute('href',nhref);
    } else if(href.indexOf(wgServer) == 0) {
      //elsewise starts with the current server name
      var nhref = href.substring(0,wgServer.length) + encodeStuff(href.substring(wgServer.length));
      a[i].setAttribute('href',nhref);
    }
  }
}

function encodeStuff(stuff) {
  var code = '';
  var txt = decodeURIComponent(stuff);
  for(var i=0;i<txt.length;i++) {
    if(/^[\\\/?=&+]$/.test(txt[i])) {
      code += txt[i];
   } else if(txt.charCodeAt(i) > 127 ) {
      code += encodeURIComponent(txt[i]);
   } else {
      code += '%' + txt.charCodeAt(i).toString(16);
    }
  }
  return code;
}