Update updateHosts.go

scripts/updateHosts.go

@@ -1,58 +1,66 @@
 //
-// @file updateHostsForWindows.go
-// @brief for windows
-// @author [email protected]
-// @version 0.0.1
-// @date 2013-03-15
+// Update hosts for windows
+// [email protected]
+// date 2013-03-15
 //
 package main
 
 import (
  "os"
- "io"
+ "io"
  "bufio"
- "strings"
- "net/http"
+ "net/http"
+ "time"
+ "bytes"
+ "io/ioutil"
 )
 
-const (
- HOSTS_PATH string = "C:\\windows\\system32\\drivers\\etc\\hosts"
- SEARCH_STRING string = "#TX-HOSTS"
- HOSTS_SOURCE string = "http:https://tx.txthinking.com/hosts"
+var (
+ HOSTS_PATH string = os.Getenv("SYSTEMROOT")+"\\system32\\drivers\\etc\\hosts"
+ SEARCH_STRING []byte = []byte("#TX-HOSTS")
+ HOSTS_SOURCE string = "http:https://tx.txthinking.com/hosts"
 )
 
 func main(){
- var hosts string
- f, _ := os.OpenFile(HOSTS_PATH, os.O_RDONLY, 0444)
- bnr := bufio.NewReader(f)
- for{
- line, err := bnr.ReadString('\n')
- if strings.Contains(line, SEARCH_STRING) {
- break
- }
- hosts += line
- if err==io.EOF {
- break
- }
- }
- f.Close();
- hosts += "\r\n"
- hosts += SEARCH_STRING
- hosts += "\r\n"
+ var hosts []byte
+ f, err := os.OpenFile(HOSTS_PATH, os.O_RDONLY, 0444)
+ if err == nil {
+ bnr := bufio.NewReader(f)
+ for{
+ line, _, err := bnr.ReadLine()
+ if bytes.Compare(line,SEARCH_STRING)==0 || err == io.EOF{
+ break
+ }
+ hosts = append(hosts, append(line,[]byte("\r\n")...)...)
+ }
+ f.Close()
+ }
+ hosts = append(hosts, append(SEARCH_STRING,[]byte("\r\n")...)...)
 
- res, _ := http.Get(HOSTS_SOURCE)
- bnr = bufio.NewReader(res.Body)
- for{
- line, err := bnr.ReadString('\n')
- hosts += line[0:len(line)-1] + "\r\n"
- if err==io.EOF {
- break
- }
- }
+ res, err := http.Get(HOSTS_SOURCE)
+ if err != nil {
+ println(err.Error())
+ time.Sleep(3 * time.Second)
+ return
+ }
+ data, err := ioutil.ReadAll(res.Body)
+ if err != nil {
+ println(err.Error())
+ time.Sleep(3 * time.Second)
+ return
+ }
+ data = bytes.Replace(data, []byte("\n"), []byte("\r\n"), -1)
+ hosts = append(hosts, data...)
 
- os.Rename(HOSTS_PATH, HOSTS_PATH+".BAK")
- f, _ = os.OpenFile(HOSTS_PATH, os.O_WRONLY|os.O_CREATE, 0644)
- f.WriteString(hosts);
- println("Success!")
+ os.Rename(HOSTS_PATH, HOSTS_PATH+"-BAK-TX-HOSTS")
+ f, err = os.OpenFile(HOSTS_PATH, os.O_WRONLY|os.O_CREATE, 0644)
+ if err != nil {
+ println(err.Error())
+ time.Sleep(3 * time.Second)
+ return
+ }
+ f.Write(hosts)
+ println("Success!")
+ time.Sleep(3 * time.Second)
 }