update local rule

rule_sample/rule_use_local_data.js

@@ -1,53 +1,25 @@
 //replace all the images with local one
-
 var url     = require("url"),
     path    = require("path"),
-    fs      = require("fs"),
+    fs      = require("fs");
-    buffer  = require("buffer");
 
-var map = [
+var LOCAL_IMAGE = "/Users/path/to/image.png";
-        {
-            "host"      :/./,
-            "path"      :/\.(png|gif|jpg|jpeg)/,
-            "localFile" :"/Users/Stella/tmp/test.png",
-            "localDir"  :"~/"
-        }
-    ];
 
 module.exports = {
+
+    //mark if use local response
     shouldUseLocalResponse : function(req,reqBody){
-        var host       = req.headers.host,
+        if(/\.(png|gif|jpg|jpeg)$/.test(req.url)){
-            urlPattern = url.parse(req.url),
+            req.replaceLocalFile = true;
-            path       = urlPattern.path;
-
-        for(var index in map){
-            var rule = map[index];
-
-            var hostTest = new RegExp(rule.host).test(host),
-                pathTest = new RegExp(rule.path).test(path);
-
-            if(hostTest && pathTest && (rule.localFile || rule.localDir) ){
-                var targetLocalfile = rule.localFile;
-
-                //localfile not set, map to dir
-                if(!targetLocalfile){ //find file in dir, /a/b/file.html -> dir + b/file.html
-                    var remotePathWithoutPrefix = path.replace(new RegExp(rule.path),""); //remove prefix
-                    targetLocalfile = pathUtil.join(rule.localDir,remotePathWithoutPrefix);
-                }
-
-                if(fs.existsSync(targetLocalfile)){
-                    console.log("==>local file: " + targetLocalfile);
-                    req.replaceLocalFile = targetLocalfile; //add a flag to req object
             return true;
-                }
+        }else{
-            }
-        }
             return false;
+        }
     },
 
     dealLocalResponse : function(req,reqBody,callback){
         if(req.replaceLocalFile){
-            callback(200, {"content-type":"image/png"}, fs.readFileSync(req.replaceLocalFile) );
+            callback(200, {"content-type":"image/png"}, fs.readFileSync(LOCAL_IMAGE) );
         }
     }
 };