seek指针大文件上传
package main
import (
// "bufio"
"fmt"
"github.com/axgle/mahonia"
// "log"
"bytes"
"os"
"strings"
)
func main() {
file, err := os.Open("hu.txt")
defer file.Close()
//得出文件大小
files, _ := file.Stat()
fileSize := files.Size()
//7,815,168
fmt.Println(fileSize, "fileSize")
size := 1024 * 1024
//循环次数
num := (int(fileSize) + size - 1) / size
//百分比进度条
var list []string
persentage := fmt.Sprintf("%.2f", 100/float64(num))
fmt.Println(persentage, "persentage")
fmt.Println(num)
for i := 0; i < num; i++ {
fmt.Println(i)
buffer := make([]byte, 1024*1024)
_, err = file.Read(buffer)
if err != nil {
fmt.Println(err)
return
}
decoder := mahonia.NewDecoder("gb18030")
if decoder == nil {
fmt.Println("the code is not exist: ", err.Error())
return
}
decodelist := decoder.ConvertString(string(buffer))
liststring := strings.Split(decodelist, "\n")
length := len(liststring)
ju := []byte(liststring[length-1])
count := bytes.Count(ju, nil)
list = liststring[:length-1]
newposition, _ := file.Seek(-int64(count), 1)
fmt.Println(newposition)
}
fmt.Println(list)
}