From 118423cf14849d46dc6120638c7c9ae4e115f563 Mon Sep 17 00:00:00 2001
From: coderaiser <mnemonic.enemy@gmail.com>
Date: Fri, 15 Aug 2014 07:18:16 -0400
Subject: [PATCH] feature(ischanged) change dir to tmp

---
 lib/server/ischanged.js | 50 ++++++++++++++++++++++++++++++++++-------
 1 file changed, 42 insertions(+), 8 deletions(-)

diff --git a/lib/server/ischanged.js b/lib/server/ischanged.js
index 2a5cf348..33016d72 100644
--- a/lib/server/ischanged.js
+++ b/lib/server/ischanged.js
@@ -1,22 +1,56 @@
 (function() {
     'use strict';
     
-    var 
-        DIR_JSON        = __dirname + '/../../json/',
+    var fs              = require('fs'),
+        os              = require('os'),
         
-        fs              = require('fs'),
         Util            = require('../util'),
         time            = require('./timem'),
         
-        NAME_SHORT      = DIR_JSON + 'changes',
-        NAME            = NAME_SHORT + '.json',
+        WIN             = process.platform === 'win32',
         
-        Times           = {};
+        Times           = {},
         
-        Util.exec.try(function() {
-            Times = require(NAME_SHORT);
+        DIR             = getDir() || __dirname + '/../../json/',
+        NAME_SHORT      = DIR           + 'changes',
+        NAME            = NAME_SHORT    + '.json';
+        
+        makeDir(function(error) {
+            if (!error)
+                Util.exec.try(function() {
+                    Times = require(NAME_SHORT);
+                });
         });
+    
+    function getDir() {
+        var dir;
         
+        if (os.tmpdir) {
+            dir     = os.tmpdir();
+            dir     += '/ischanged';
+            
+            if (!WIN)
+                dir += '-' + process.getuid() + '/';
+        }
+        
+        return dir;
+    }
+    
+    function makeDir(callback) {
+        var ANY_MASK    = 0,
+            umask       = process.umask(ANY_MASK);
+        
+        fs.mkdir(DIR, function(error) {
+            process.umask(umask);
+            
+            if (error && error.code === 'EEXIST')
+                callback();
+            else
+                callback(error);
+        });
+    }
+    
+    
     module.exports = function(name, callback) {
         var readTime = Times[name];