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Old 08-22-2006, 01:05 PM   #1
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Question sajax, php, entities, JS and IE

Well.... it's plenty of stuff.

I'm making an LDAP browsing application for our enterprise (web enabled).

It's made on PHP. I have already displayed the directory and can collapse / expand nodes. I have implemented node expansion with ajax (via sajax). In the PHP function that is called to get the information of the nodes I'm going to display I pass some information, like:
Node's Plain Name
Node's DN
Node's GUID
If the node has children among others. I separate each line by a \n and each node by an empty line (\n).

The JS code "parses" that input that's coming from sajax and creates the nodes and so on. It works flawlessly..... on firefox.

Not that it fails on IE, it works there too... but it fails when I have a html entity in my code (that I'm not decoding on php).

Things like "Enfermería" make the script fail from that point on.

Here's one output that the browser is supposed to handle (through my script that gets its input from sajax):
+:var res = 'a9d6d489976453488534e1188af6c956\n17\norganizationalunit \nAdiestramiento y Soporte\nOU=Adiestramiento y Soporte,OU=AIT,DC=FHEP,DC=ORG\n79560207a9c609438c5ad54d5cd641ff\ntrue\n\ngroup \nAnalista Web\nCN=Analista Web,OU=AIT,DC=FHEP,DC=ORG\n74cabd037763dc46a14ee777c25d4716\nfalse\n\norganizationalunit \nAnalista Web y Movil\nOU=Analista Web y Movil,OU=AIT,DC=FHEP,DC=ORG\nd0171519e267974095ce80065c80e430\nfalse\n\ngroup \nAplicacion Evaluaciones\nCN=Aplicacion Evaluaciones,OU=AIT,DC=FHEP,DC=ORG\n4c37585469b6c44598c8391be0dd7634\nfalse\n\ngroup \nAsesores\nCN=Asesores,OU=AIT,DC=FHEP,DC=ORG\nb6724ee1757bbc4d946713e457bba72c\nfalse\n\norganizationalunit \nAsesores SMILE\nOU=Asesores SMILE,OU=AIT,DC=FHEP,DC=ORG\n10bd2391ffb09f4f81e0d9914f605de8\ntrue\n\norganizationalunit \nCoordinacion de AIT\nOU=Coordinacion de AIT,OU=AIT,DC=FHEP,DC=ORG\n453e3eec097c7749bd5c9d036f799d51\ntrue\n\ngroup \nCoordinador de Sistemas\nCN=Coordinador de Sistemas,OU=AIT,DC=FHEP,DC=ORG\n4e9f8a768873eb47b8ffb76ecf680564\nfalse\n\norganizationalunit \nDigitalizaci�\nOU=Digitalizaci�,OU=AIT,DC=FHEP,DC=ORG\nef0d3df10db09f43ba76860f23e7e5b4\ntrue\n\norganizationalunit \nHardware\nOU=Hardware,OU=AIT,DC=FHEP,DC=ORG\n44606e18a8e7fe4db253b76b297ca433\ntrue\n\ngroup \nInforme de Errores SMILE\nCN=Informe de Errores SMILE,OU=AIT,DC=FHEP,DC=ORG\ne151e7eb1e6eb0489161\nfalse\n\ngroup \nPasante de Sistemas\nCN=Pasante de Sistemas,OU=AIT,DC=FHEP,DC=ORG\nb58bcb05975e6c4da0b92c028d543fc7\nfalse\n\ngroup \nSistemas Global\nCN=Sistemas Global,OU=AIT,DC=FHEP,DC=ORG\n25d1b4547518ed4abd65fa9a0dc72950\nfalse\n\norganizationalunit \nSoftware\nOU=Software,OU=AIT,DC=FHEP,DC=ORG\ne782dc21e66d0a4f9fd20d5ee508a852\ntrue\n\ngroup \nSoporte Administrativo\nCN=Soporte Administrativo,OU=AIT,DC=FHEP,DC=ORG\n80ab950ee499f74b8814e59a861e32fb\nfalse\n\norganizationalunit \nSoporte ASYS\nOU=Soporte ASYS,OU=AIT,DC=FHEP,DC=ORG\n9a612d71fe89314e9e04285f72e7a59e\ntrue\n\ngroup \nSoporte SMILE\nCN=Soporte SMILE,OU=AIT,DC=FHEP,DC=ORG\n3451e868f980ec47b316c2789432c58e\nfalse\n\n'; res;
The characters � are the special one that aren't being displayed well, but that they are being well transmitted. Checking with hexedit:
63 69 F3 6E
That would be "ción" from "Digitalización".

This is the JS code I use to parse the input and create the nodes:
function agregarNodos(resultado) {
	// en la primera linea esta el nombre de la tabla sobre la que estoy trabajando
	var posicion1 = resultado.indexOf("\n");
	var guid = resultado.substring(0, posicion1);
	var posicion2 = resultado.indexOf("\n", posicion1);
	var cantidad = parseInt(resultado.substring(posicion1, posicion2));
	// ahora pasamos a los nodos
	posicion1 = posicion2+1;
	var clase = "";
	var nombre = "";
	var dn = "";
	var guid2 = "";
	var hijos = false;
	var cadena = ""; // temporal
	var lista = document.getElementById(guid);
	var forma = document.forms["peticion"];
	for (var i = 0; i < cantidad; i++) {
		for (var j = 0; j < 6; j++) {
			posicion2 = resultado.indexOf("\n", posicion1);
			cadena = resultado.substring(posicion1, posicion2);
			switch (j) {
				case 0: 
					clase = cadena;
				case 1:
					nombre = cadena;
				case 2:
					dn = cadena;
				case 3:
					guid2 = cadena;
				case 4:
					hijos = cadena == "true" ? true : false;
			posicion1 = posicion2+1;
		var nodeLI = document.createElement("LI");
		var nodeText = document.createTextNode(nombre);
		if (hijos) {
			var field = forma.elements[guid2];
			// tiene hijos... hay que hacerlo expandible
			nodeA.href="javascript:toggle(\'" + guid2 + "\');"
			var nodeCruz = document.createTextNode(field ? "-" : "+"); // expandido?
			// le agregamos un espacio al texto del nodo de texto = ' ' +;
			// agregamos la nueva lista
			var nodeUL = document.createElement("UL"); = guid2;
			if (field) {
				// hay que expandir este campo tambien
				x_getNodes(guid2, agregarNodos);
		} else {
As you can see, I parse the input by looking for the new lines in the input string.

Any ideas how I can overcome the problem?
Old 08-22-2006, 01:58 PM   #2
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I have noticed that IE, when it finds say: {á, é, í, ó, ú, ñ}, it will "skip" processing the following 2 characters. So Médica (por example) doesn't fail (though it shows up like "M?ca", but "Enfermería" at the end of one string will, because the \n will be processed as Enfermer?n and then continue with whatever follows just like it's a single line.

Well.... Do I have to blame M$? Or it's normal behavior?

Any idea how I can better parse it then?
Old 08-22-2006, 04:02 PM   #3
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Location: Costa Rica
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Solved it: on PHP (sajax side) I have to process this strings with non 7-bit ascii characters through rawurlencode() and then on the JS side use unescape() to get them back the way they were originally. :-) It worked on IE and on FF. :-D


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