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progress_bar.go
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progress_bar.go
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package util
import (
"fmt"
)
// Bar ...
type Bar struct {
percent int64 // progress percentage
cur int64 // current progress
total int64 // total value for progress
rate string // the actual progress bar to be printed
graph string // the fill value for progress bar
}
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 // initial progress position
}
}
func (bar *Bar) getPercent() int64 {
return int64((float32(bar.cur) / float32(bar.total)) * 100)
}
func (bar *Bar) Increment() {
bar.cur += 1
}
func (bar *Bar) Play() {
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()
}