From 0ec19f11535d7aeb283751e2d91da33b00b38125 Mon Sep 17 00:00:00 2001
From: Eugenio Cordoba <eugenio@nexorone.com>
Date: Wed, 10 Sep 2014 15:00:41 -0500
Subject: [PATCH] Added localStorageService.length()

Added localStorageService.length()

Number of items stored in the localStorage according to the prefix
---
 angular-local-storage.js | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/angular-local-storage.js b/angular-local-storage.js
index f212b16..a08bc0f 100644
--- a/angular-local-storage.js
+++ b/angular-local-storage.js
@@ -375,6 +375,16 @@ angularLocalStorage.provider('localStorageService', function() {
       });
     };
 
+    var lengthToLocalStorage = function() {
+      var cant = 0;
+      for(var iIndex=0; iIndex<localStorage.length; iIndex++){
+        if( localStorage.key(iIndex).contains(prefix) && localStorage.key(iIndex).indexOf(prefix) === 0 ){
+          cant++;
+        }
+      }
+      return cant;
+    };
+
     return {
       isSupported: browserSupportsLocalStorage,
       getStorageType: getStorageType,
@@ -386,6 +396,7 @@ angularLocalStorage.provider('localStorageService', function() {
       clearAll: clearAllFromLocalStorage,
       bind: bindToScope,
       deriveKey: deriveQualifiedKey,
+      length: lengthToLocalStorage,
       cookie: {
         set: addToCookies,
         add: addToCookies, //DEPRECATED