1 files changed, 75 insertions, 0 deletions

diff --git a/js/io/utils/file-utils.js b/js/io/utils/file-utils.js
new file mode 100644
index 00000000..0afdffc6
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+++ b/js/io/utils/file-utils.js
@@ -0,0 +1,75 @@
+/* <copyright>
+This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
+No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
+(c) Copyright 2011 Motorola Mobility, Inc.  All Rights Reserved.
+</copyright> */
+
+var fileSystem = require("js/io/system/coreioapi").CoreIoApi;
+
+var FileUtils = exports.FileUtils = Object.create(Object.prototype, {
+
+    /***
+     * checks for valid uri pattern
+     * also flags if Windows uri pattern and Unix uri patterns are mixed
+     */
+    isValidUri:{
+        value: function(uri){
+            var isWindowsUri=false, isUnixUri=false,status=false;
+            if(uri !== ""){
+                uri = uri.replace(/^\s+|\s+$/g,"");  // strip any leading or trailing spaces
+
+                //for local machine folder uri
+                isWindowsUri = /^([a-zA-Z]:)(\\[^<>:"/\\|?*]+)*\\?$/gi.test(uri);
+                isUnixUri = /^(\/)?(\/(?![.])[^/]*)*\/?$/gi.test(uri);//folders beginning with . are hidden on Mac / Unix
+                status = isWindowsUri || isUnixUri;
+                if(isWindowsUri && isUnixUri){status = false;}
+            }
+            return status;
+        }
+    },
+
+    /***
+     * file name validation
+     */
+    isValidFileName:{
+        value: function(fileName){
+            var status = false;
+            if(fileName !== ""){
+                fileName = fileName.replace(/^\s+|\s+$/g,"");
+                status = !(/[/\\]/g.test(fileName));
+                if(status && navigator.userAgent.indexOf("Macintosh") != -1){//for Mac files beginning with . are hidden
+                    status = !(/^\./g.test(fileName));
+                }
+            }
+            return status;
+        }
+    },
+
+    /***
+     * check if the file exists
+     */
+    checkFileExists:{
+        value: function(fileUri, folderUri, fileType){
+            var uri = "", response=null, status=true;
+
+            //prepare absolute uri
+            if(/[^/\\]$/g.test(folderUri)){
+                folderUri = folderUri + "/";
+            }
+
+            //todo:add file extension check if fileType present
+
+            uri = ""+folderUri+fileUri;
+
+            response = fileSystem.fileExists({"uri":uri});
+            if(!!response && response.success && (response.status === 204)){
+                status = true;
+            }else if(!!response && response.success && (response.status === 404)){
+                status = false;
+            }else{
+                status = false;
+            }
+            return status;
+        }
+    }
+});
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