From 0fb5af9067a86f84c74b1999fa425943925cf6b5 Mon Sep 17 00:00:00 2001
From: dongyado <slaying.monsters@gmail.com>
Date: Wed, 6 Jul 2016 00:29:19 +0800
Subject: [PATCH] update nodejs client

---
 binding/nodejs/ip2region.js | 74 ++++++++++++++++++++++++++-----------
 binding/nodejs/test.js      |  8 ++--
 2 files changed, 55 insertions(+), 27 deletions(-)

diff --git a/binding/nodejs/ip2region.js b/binding/nodejs/ip2region.js
index de3e9db..4684f3e 100644
--- a/binding/nodejs/ip2region.js
+++ b/binding/nodejs/ip2region.js
@@ -6,29 +6,59 @@
  * @author dongyado<dongyado@gmail.com>
  * */
 
-var fs   = require('fs');
-var ip2r = {};
-ip2r.db_file    = null;
-ip2r.db_fd      = null;
 
-
-exports.setDbFile = function(path)
+function Ip2region(db_path)
 {
-    ip2r.db_file = path;
-    ip2r.db_fd   = fs.open(ip2r.db_file);
+    var fs   = require('fs');
+    var ipbase = [16777216, 65536, 256, 1]; // for ip2long
+    var ip2r = {};
+    ip2r.db_file_path   = null;
+    ip2r.db_fd          = null;
+
+    // db file check
+    if (typeof(db_path) == "undefined" || fs.exists(db_path) ) {
+        throw("[ip2region] db file not exists : " + db_path);
+    }
+    
+    ip2r.db_file_path = db_path; 
+
+    try {
+        ip2r.db_fd = fs.openSync(ip2r.db_file_path, 'r');
+    } catch(e) {
+        throw("[ip2region] Can not open ip2region.db file , path : " + ip2r.db_file_path);
+    }
+
+
+    this.binarySearch = function(ip)
+    {
+        var buffer = new Buffer(8);
+        fs.readSync(ip2r.db_fd, buffer, 0, 8, 0);
+        console.log(buffer[0]);
+
+
+
+        return ip2long(ip);
+    }
+
+    this.btreeSearch = function(ip) 
+    {
+        return ip2long(ip);
+    }
+
+    function ip2long(ip)
+    {
+        var val = 0;
+        ip.split('.').forEach(function(ele, i){
+            val += ipbase[i] * ele;
+        }); 
+
+        return val;
+    }
+
+    function getLong(buffer) 
+    {
+        
+    }
 }
 
-exports.getDbFile = function(path)
-{
-    return ip2r.db_file;
-}
-
-exports.binarySearch = function(ip)
-{
-    return ip;
-}
-
-exports.btreeSearch = function(ip) 
-{
-    return ip;
-}
+module.exports = Ip2region;
diff --git a/binding/nodejs/test.js b/binding/nodejs/test.js
index 38db36e..7054c58 100644
--- a/binding/nodejs/test.js
+++ b/binding/nodejs/test.js
@@ -2,9 +2,7 @@
  * test program
  * */
 
-var ip2r = require('./ip2region');
+var Ip2region = require('./ip2region');
+var ip2region = new Ip2region('../../data/ip2region.db'); 
 
-ip2r.setDbFile('./ip2region.db');
-
-console.log(ip2r.getDbFile());
-console.log(ip2r.binarySearch("12321231"));
+console.log(ip2region.binarySearch("114.114.114.114"));