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gibney.org : Technology : Javascript : Experiments : Search Engine

(Entry Nr. 229, by user 1 | edit)

function cutOneFolder(Url)
{
 if (Url.substr(Url.length-1,1)=="/") Url=Url.substr(0,Url.length-1);
 LastSlash=Url.lastIndexOf("/");
 Url=Url.substr(0,LastSlash+1);
 return Url;
}

var NrPagesScanned=0;

function scanPage(Url,Content)
{
 NrPagesScanned++;
 if (NrPagesScanned>20) return;

//alert (Url+":\n"+Content);
 HREFs=Content.match(/href="[^"]*\/"/gi);
 for (i in HREFs)
 {
  BaseUrl=Url;
  HREF=HREFs[i];
  Link=HREF.substr(6,HREF.length-7);
  if (Link.substr(0,5)=="http:") continue;
  
  if (Link.substr(0,3)=="../")
  {
   Link=Link.substr(3,Link.length-3);
   BaseUrl=cutOneFolder(BaseUrl);
  }

if (Link=="./") continue;
  if (Link.substr(0,2)=="./") Link=Link.substr(2,Link.length-2);
  if (Link.length<2) continue;
  Link=BaseUrl+Link;

if (document.getElementById(escape(Link))) continue;

var NewElement=document.createElement("div");
  var myText = document.createTextNode(Link);
  NewElement.id=escape(Link);
  NewElement.appendChild(myText);
  document.getElementById("sw_container").appendChild(NewElement);

readPage(Link);

}
}

function readPage(Url)
{

var xmlHttp = null;
 // Mozilla, Opera, Safari sowie Internet Explorer 7
 if (typeof XMLHttpRequest != 'undefined') xmlHttp = new XMLHttpRequest();

if (!xmlHttp) {
    // Internet Explorer 6 und älter
    try {
        xmlHttp  = new ActiveXObject("Msxml2.XMLHTTP");
    } catch(e) {
        try {
            xmlHttp  = new ActiveXObject("Microsoft.XMLHTTP");
        } catch(e) {
            xmlHttp  = null;
        }
    }
 }

if (xmlHttp) 
 {
   xmlHttp.open('GET', Url, true);
   xmlHttp.onreadystatechange = function () { if (xmlHttp.readyState == 4) scanPage(Url,xmlHttp.responseText); };
   xmlHttp.send(null);
 }
}

readPage("{PATH_ROOT}");

//readPage("/nl/");

</script>

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