Update updateHosts.go

scripts/updateHosts.go

@@ -1,65 +1,64 @@
 //
 // Update hosts for windows
-// [email protected]
-// date 2013-03-15
 //
+
 package main
 
 import (
  "os"
- "io"
+ "io"
  "bufio"
- "net/http"
- "time"
- "bytes"
- "io/ioutil"
+ "net/http"
+ "time"
+ "bytes"
+ "io/ioutil"
 )
 
 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"
+ SEARCH_STRING []byte = []byte("#TX-HOSTS")
+ HOSTS_SOURCE string = "http:https://tx.txthinking.com/hosts"
 )
 
 func main(){
- var hosts []byte
+ 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")...)...)
+ 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, err := http.Get(HOSTS_SOURCE)
- if err != nil {
- println(err.Error())
- time.Sleep(3 * time.Second)
- return
- }
+ 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...)
+ 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-TX-HOSTS")
+ 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)
+ if err != nil {
+ println(err.Error())
+ time.Sleep(3 * time.Second)
+ return
+ }
+ f.Write(hosts)
+ println("Success!")
+ time.Sleep(3 * time.Second)
 }