add simple server 4 test

Author: erik168

tool/server.js

@@ -0,0 +1,45 @@
+/*
+ * 可用于启动一个简单的测试server
+ * 使用NodeJs
+ * 
+ * @author errorrik
+ */
+
+// 导入依赖模块
+var http = require( 'http' );
+var fs   = require( 'fs' );
+var url  = require( 'url' );
+
+// ER目录根
+var documentRoot = __dirname + '/..';
+
+// Content-Type表
+var TYPE_MAP = {
+    'js'   : 'text/javascript;charset=UTF-8',
+    'html' : 'text/html;charset=UTF-8',
+    'css'  : 'text/css;charset=UTF-8',
+    'png'  : 'image/png',
+    'gif'  : 'image/gif'
+};
+
+var server = http.createServer( function ( request, response ) {
+    console.log( request.url );
+    var urlObj   = url.parse( request.url );
+    var fileName = documentRoot + urlObj.pathname.replace( /^\/er/, '' );
+    var suffix   = fileName.slice( fileName.lastIndexOf( '.' ) + 1 ).toLowerCase();
+    var type     = TYPE_MAP[ suffix ];
+    
+    if ( !type ) {
+        response.end();
+        return;
+    }
+
+    fs.readFile( fileName, function ( error, file ) {
+        response.writeHead( 200, { 'Content-Type': type } );
+        response.write( file );
+        response.end();
+    } );
+} ).listen( 80 );
+
+console.log( 'ER test server started!' );
+