From 2cea2c70bca45cb5a8a951753e1acd5c2ea692c2 Mon Sep 17 00:00:00 2001
From: coderaiser <mnemonic.enemy@gmail.com>
Date: Tue, 19 Nov 2013 09:33:51 +0000
Subject: [PATCH] refactor(hash) change structure

---
 lib/server/hash.js | 46 ++++++++++++++++++++++------------------------
 lib/server/rest.js |  9 ++++-----
 2 files changed, 26 insertions(+), 29 deletions(-)

diff --git a/lib/server/hash.js b/lib/server/hash.js
index a4f88c5c..70a1b59d 100644
--- a/lib/server/hash.js
+++ b/lib/server/hash.js
@@ -2,37 +2,35 @@
     'use strict';
     
     var util        = require('util'),
+        crypto      = require('crypto'),
         Writable    = require('stream').Writable;
-        
-    util.inherits(HashProto, Writable);
     
-    object.create   = new HashProto().create;
-     
-    function HashProto() {
-        var shasum,
-            crypto      = require('crypto');
+    object.create   = function() {
+        var ret;
         
-        this.create = function() {
-            var ws      = new Writable();
-            
-            ws._write   = write;
-            ws.get      = get;
-            
-            shasum      = crypto.createHash('sha1');
-            
-            return ws;
+        if (Writable) {
+            util.inherits(WS, Writable);
+            ret = new WS();
+        }
+        
+        return ret;
+    };
+    
+    function WS(opt) {
+        var sha         = crypto.createHash('sha1');
+        
+        Writable.call(this, opt);
+        
+        this._write     = function(chunk, enc, next) {
+            sha.update(chunk);
+            next();
         };
         
-        function get() {
-            var hex = shasum.digest('hex');
+        this.get        = function() {
+            var hex     = sha.digest('hex');
             
             return hex;
-        }
-        
-        function write (chunk, enc, next) {
-            shasum.update(chunk);
-            next();
-        }
+        };
     }
     
 })(this);
diff --git a/lib/server/rest.js b/lib/server/rest.js
index c3822079..e464e564 100644
--- a/lib/server/rest.js
+++ b/lib/server/rest.js
@@ -117,13 +117,13 @@
                         });
                     });
                 else if (Util.strCmp(lQuery, 'hash')) {
-                    if (!Hash) {
+                    hash = Hash.create();
+                    
+                    if (!hash) {
                         lMsg    = 'not suported, try update node';
                         lMsg    = CloudFunc.formatMsg('hash', lMsg, 'error');
                         sendError(p, lMsg);
-                    } else {
-                        hash = Hash.create();
-                        
+                    } else
                         pipe.create({
                             from        : p.name,
                             write       : hash,
@@ -134,7 +134,6 @@
                                 });
                             }
                         });
-                    }
                 } else
                     fs.stat(p.name, function(pError, pStat) {
                         checkSendError(pError, p, function() {