SQL & PL/SQL

All -- I am trying to convert functionality from java script to PLSQL and researching on equivalent functionality for encodeuricomponent

Below is complete code from java script

function generateSignedURL(actionName, form, accessKeyId, secretKey, endpoint, version) {
var url = endpoint + "?SignatureVersion=1&Action=" + actionName + "&Version=" + encodeURIComponent(version) + "&";
for (var i = 0; i < form.elements.length; ++i) {
var elementName = form.elements.name;

var elementValue = null;

if (form.elements[i].type == 'text') {
elementValue = form.elements[i].value;
} else if (form.elements[i].type == 'select-one') {
elementValue = form.elements[i].options[form.elements[i].selectedIndex].value;
}
if (elementValue) {
url += elementName;
url += "=";
url += encodeURIComponent(elementValue);
url += "&";
}
}
var timestamp = getNowTimeStamp();
url += "Timestamp=" + encodeURIComponent(timestamp);

url += "&AWSAccessKeyId=" + encodeURIComponent(accessKeyId);
var signature = generateV1Signature(url, secretKey);
url += "&Signature=" + encodeURIComponent(signature);

return url;
}

I am trying to write this in plsql to acheive same functionality.

Any help would be greatly appreciated.

Thanks,
Vamshi .D