Added string conversion API

* bin
* pad
* unpad
* conversion bin/hex/dec

ethereal/assets/ethereum.js

@@ -114,7 +114,7 @@ function debug(/**/) {
 	var args = arguments;
 	var msg = ""
 	for(var i = 0; i < args.length; i++){
-		if(typeof args[i] == "object") {
+		if(typeof args[i] === "object") {
 			msg += " " + JSON.stringify(args[i])
 		} else {
 			msg += args[i]
@@ -155,3 +155,60 @@ navigator.qt.onmessage = function(ev) {
 		}
 	}
 }
+
+window.eth._0 = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
+String.prototype.pad = function(len) {
+    var bin = this.bin();
+    var l = bin.length;
+    if(l < 32) {
+        return eth._0.substr(0, 32 - bin.length) + bin;
+    }
+
+    return bin;
+}
+
+String.prototype.unpad = function() {
+    var i, l;
+    for(i = 0, l = this.length; i < l; i++) {
+        if(this[i] != "\0") {
+            return this.substr(i, this.length);
+        }
+    }
+
+    return this.substr(i, this.length);
+}
+
+String.prototype.bin = function() {
+    if(this.substr(0, 2) == "0x") {
+        return this.hex2bin();
+    } else if(/^\d+$/.test(this)) {
+        return this.num2bin()
+    }
+
+    // Otherwise we'll return the "String" object instead of an actual string
+    return this.substr(0, this.length)
+}
+
+String.prototype.unbin = function() {
+    var i, l, o = '';
+    for(i = 0, l = this.length; i < l; i++) {
+        var n = this.charCodeAt(i).toString(16);
+        o += n.length < 2 ? '0' + n : n;
+    }
+
+    return "0x" + o;
+}
+
+String.prototype.hex2bin = function() {
+    bytes = []
+
+    for(var i=2; i< this.length-1; i+=2){
+        bytes.push(parseInt(this.substr(i, 2), 16));
+    }
+
+    return String.fromCharCode.apply(String, bytes);
+}
+
+String.prototype.num2bin = function() {
+    return ("0x"+parseInt(this).toString(16)).bin()
+}

ethereal/assets/qml/webapp.qml

@@ -123,6 +123,8 @@ ApplicationWindow {
 			function onObjectChangeCb(stateObject) {
 				postEvent("object:"+stateObject.address(), stateObject)
 			}
+			function onStorageChangeCb() {
+			}
 		}
 
 		Rectangle {

ethereal/assets/samplecoin/samplecoin.html

@@ -21,7 +21,7 @@ function createTransaction() {
 }
 
 function init() {
-	eth.set({width: 500, title: "Hello world"})
+	eth.set({width: 500})
 
 	eth.getKey(function(key) {
 		eth.getStorageAt(jefcoinAddr, key, function(storage) {