Added U.groupify(id, [count]) method for grouping identifiers.

changelog.txt

@@ -9,6 +9,7 @@
 - fixed a file validation for encrypted word/excel files
 - updated Tangular template engine
 - added a new global keyword `PLUGINS`
+- added `U.groupify(id, [count])` method for grouping identifiers
 
 ========================
 0.0.87

filestorage.js

@@ -60,19 +60,7 @@ FP.count = function(callback) {
 };
 
 FP.makedirectory = function(id) {
-
-	var val = (HASH(id, true) % 10000) + '';
-	var diff = 4 - val.length;
-
-	if (diff > 0) {
-		for (var i = 0; i < diff; i++)
-			val = '0' + val;
-	}
-
-	if (diff.length > 4)
-		val = val.substring(0, 4);
-
-	return Path.join(this.directory, val);
+	return Path.join(this.directory, U.groupify(id));
 };
 
 FP.readfilename = function(id) {

utils.js

@@ -260,6 +260,29 @@ global.DIFFARR = exports.diffarr = function(prop, db, form) {
 	return obj;
 };
 
+exports.groupify = function(id, count) {
+
+	var number = 1;
+
+	if (!count)
+		count = 4;
+
+	for (var i = 0; i < count; i++)
+		number *= 10;
+
+	var val = (HASH(id, true) % number) + '';
+	var diff = count - val.length;
+	if (diff > 0) {
+		for (var i = 0; i < diff; i++)
+			val = '0' + val;
+	}
+
+	if (diff.length > 4)
+		val = val.substring(0, 4);
+
+	return val;
+};
+
 exports.toURLEncode = function(value) {
 	var builder = [];