golang 实现进度条的方法
package main
import (
"fmt"
"time"
)
type Bar struct {
percent int64 //百分比
cur int64 //当前进度位置
total int64 //总进度
rate string //进度条
graph string //显示符号
}
func main(){
var bar Bar
bar.NewOption(0, 100)
//bar.NewOptionWithGraph(0, 100, "#")
for i:= 0; i<=100; i++{
time.Sleep(100*time.Millisecond)
bar.Play(int64(i))
}
bar.Finish()
}
func (bar *Bar) NewOption(start, total int64) {
bar.cur = start
bar.total = total
if bar.graph == "" {
bar.graph = "█"
}
bar.percent = bar.getPercent()
for i := 0; i < int(bar.percent); i += 2 {
bar.rate += bar.graph //初始化进度条位置
}
}
func (bar *Bar) getPercent() int64 {
return int64(float32(bar.cur) / float32(bar.total) * 100)
}
func (bar *Bar) NewOptionWithGraph(start, total int64, graph string) {
bar.graph = graph
bar.NewOption(start, total)
}
func (bar *Bar) Play(cur int64) {
bar.cur = cur
last := bar.percent
bar.percent = bar.getPercent()
if bar.percent != last && bar.percent%2 == 0 {
bar.rate += bar.graph
}
fmt.Printf("\r[%-50s]%3d%% %8d/%d", bar.rate, bar.percent, bar.cur, bar.total)
}
func (bar *Bar) Finish(){
fmt.Println()
}