ch08/readfile-os-open/main.go

   1 package main
   2
   3 import (
   4         "fmt"
   5         "io"
   6         "log"
   7         "os"
   8 )
   9
  10 func main() {
  11         path := "main.go"
  12         file, err := os.Open(path)
  13         if err != nil {
  14                 log.Fatal(err)
  15         }
  16         defer file.Close()
  17
  18         buf := make([]byte, 10)
  19         for {
  20                 n, err := file.Read(buf)
  21                 if err != nil {
  22                         if err != io.EOF {
  23                                 log.Println("读取错误：", err)
  24                         }
  25                         break
  26                 }
  27                 fmt.Print(string(buf[:n]))
  28         }
  29 }