package progressbar
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import "fmt"
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// the progressbar indicates the current status and progress would be desired.
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// ref: https://www.pixelstech.net/article/1596946473-A-simple-example-on-implementing-progress-bar-in-GoLang
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type Bar struct {
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percent int64 // progress percentage
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cur int64 // current progress
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start int64 // the init starting value for progress
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total int64 // total value for progress
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rate string // the actual progress bar to be printed
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graph string // the fill value for progress bar
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}
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func (bar *Bar) NewOption(start, total int64) {
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bar.cur = start
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bar.start = start
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bar.total = total
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bar.graph = "█"
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bar.percent = bar.getPercent()
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}
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func (bar *Bar) getPercent() int64 {
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return int64(float32(bar.cur-bar.start) / float32(bar.total-bar.start) * 100)
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}
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func (bar *Bar) Play(cur int64) {
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bar.cur = cur
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last := bar.percent
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bar.percent = bar.getPercent()
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if bar.percent != last && bar.percent%2 == 0 {
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bar.rate += bar.graph
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}
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fmt.Printf("\r[%-50s]%3d%% %8d/%d", bar.rate, bar.percent, bar.cur, bar.total)
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}
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func (bar *Bar) Finish() {
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fmt.Println()
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}
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