From f95d59c47b7a7e681e5d5af10d94db398a314bba Mon Sep 17 00:00:00 2001
From: Lion <chenxin619315@gmail.com>
Date: Wed, 29 Jun 2022 17:49:59 +0800
Subject: [PATCH] some optimizations

---
 binding/golang/xdb/header.go | 36 ------------------------------------
 maker/golang/ReadMe.md       |  9 ++++++---
 maker/golang/xdb/searcher.go |  2 +-
 3 files changed, 7 insertions(+), 40 deletions(-)
 delete mode 100644 binding/golang/xdb/header.go

diff --git a/binding/golang/xdb/header.go b/binding/golang/xdb/header.go
deleted file mode 100644
index 561b562..0000000
--- a/binding/golang/xdb/header.go
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright 2022 The Ip2Region Authors. All rights reserved.
-// Use of this source code is governed by a Apache2.0-style
-// license that can be found in the LICENSE file.
-
-// @Author Lion <chenxin619315@gmail.com>
-// @Date   2022/06/16
-
-package xdb
-
-import (
-	"encoding/binary"
-	"fmt"
-)
-
-type Header struct {
-	// data []byte
-	Version       uint16
-	IndexPolicy   IndexPolicy
-	CreatedAt     uint32
-	StartIndexPtr uint32
-	EndIndexPtr   uint32
-}
-
-func NewHeader(input []byte) (*Header, error) {
-	if len(input) < 16 {
-		return nil, fmt.Errorf("invalid input buffer")
-	}
-
-	return &Header{
-		Version:       binary.LittleEndian.Uint16(input),
-		IndexPolicy:   IndexPolicy(binary.LittleEndian.Uint16(input[2:])),
-		CreatedAt:     binary.LittleEndian.Uint32(input[4:]),
-		StartIndexPtr: binary.LittleEndian.Uint32(input[8:]),
-		EndIndexPtr:   binary.LittleEndian.Uint32(input[12:]),
-	}, nil
-}
diff --git a/maker/golang/ReadMe.md b/maker/golang/ReadMe.md
index d906906..ce8ce8c 100644
--- a/maker/golang/ReadMe.md
+++ b/maker/golang/ReadMe.md
@@ -1,5 +1,6 @@
 # ip2region xdb golang 生成实现
 
+
 # 程序编译
 
 通过如下方式编译得到 xdb_maker 可执行程序:
@@ -9,7 +10,8 @@ make
 ```
 编译成功后会在当前目录生成一个 xdb_maker 的可执行文件
 
-# 数据生成
+
+# `xdb` 数据生成
 
 通过 `xdb_maker gen` 命令生成 ip2region.xdb 二进制文件:
 ```
@@ -29,7 +31,8 @@ options:
 2022/06/16 16:38:48 main.go:89: Done, elapsed: 33.615278847s
 ```
 
-# 数据查询
+
+# `xdb` 数据查询
 
 通过 `xdb_maker search` 命令来测试查询输入的 ip：
 ```
@@ -59,7 +62,7 @@ ip2region>>
 
 # bench 测试
 
-如果你自主生成了 xdb 文件，请确保运行如下的 `xdb_maker bench` 命令来确保生成的的 xdb 文件的正确性：
+如果你自主生成了 `xdb` 文件，请确保运行如下的 `xdb_maker bench` 命令来确保生成的的 `xdb` 文件的正确性：
 ```
 ➜  golang git:(v2.0_xdb) ✗ ./xdb_maker bench
 ./xdb_maker bench [command options]
diff --git a/maker/golang/xdb/searcher.go b/maker/golang/xdb/searcher.go
index ed4d0f7..841372a 100644
--- a/maker/golang/xdb/searcher.go
+++ b/maker/golang/xdb/searcher.go
@@ -113,7 +113,7 @@ func (s *Searcher) Search(ip uint32) (string, int, error) {
 		}
 
 		ioCount++
-		var buff = make([]byte, 8)
+		var buff = make([]byte, VectorIndexSize)
 		rLen, err := s.handle.Read(buff)
 		if err != nil {
 			return "", ioCount, fmt.Errorf("read vector index at %d: %w", pos, err)