save map config to local file

lib/rule_default.js

@@ -1,5 +1,6 @@
 var utils      = require("./util"),
     bodyParser = require("body-parser"),
+    path       = require("path"),
     fs         = require("fs");
 
 var isRootCAFileExists = require("./certMgr.js").isRootCAFileExists(),
@@ -8,6 +9,52 @@ var isRootCAFileExists = require("./certMgr.js").isRootCAFileExists(),
 //e.g. [ { keyword: 'aaa', local: '/Users/Stella/061739.pdf' } ]
 var mapConfig = [];
 
+
+var configFile = "mapConfig.json";
+function saveMapConfig(content,cb){
+    try{
+        var anyproxyHome = utils.getAnyProxyHome(),
+            mapCfgPath   = path.join(anyproxyHome,configFile);
+
+        if(typeof content == "object"){
+            content = JSON.stringify(content);
+        }
+        fs.writeFile(mapCfgPath,content,cb);
+    }catch(e){
+        cb && cb(e)
+    }
+}
+
+function getMapConfig(cb){
+    try{
+        var anyproxyHome = utils.getAnyProxyHome(),
+            mapCfgPath   = path.join(anyproxyHome,configFile);
+
+        fs.readFile(mapCfgPath,{encoding:"utf8"},function(err,content){
+            if(err){
+                cb && cb(err)
+            }else{
+                try{
+                    var obj = JSON.parse(content);
+                    cb && cb(null,obj);
+                }catch(e){
+                    cb && cb(e);
+                } 
+            }
+        });
+    }catch(e){
+        cb && cb(e)
+    }
+}
+
+//load saved config file
+getMapConfig(function(err,result){
+    if(result){
+        mapConfig = result;
+    }
+});
+
+
 module.exports = {
     summary:function(){
         var tip = "the default rule for AnyProxy which supports CORS.";
@@ -110,6 +157,8 @@ module.exports = {
         app.post("/setMapConfig",function(req,res){
             mapConfig = req.body;
             res.json(mapConfig);
+
+            saveMapConfig(mapConfig);
         });
 
         cb();