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example_test.go
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example_test.go
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package mpb_test
import (
"io"
"io/ioutil"
"math/rand"
"net/http"
"time"
"github.com/mikewiacek/mpb"
"github.com/mikewiacek/mpb/decor"
)
func Example() {
// initialize progress container, with custom width
p := mpb.New(mpb.WithWidth(64))
total := 100
name := "Single Bar:"
// adding a single bar, which will inherit container's width
bar := p.AddBar(int64(total),
// set custom bar style, default one is "[=>-]"
mpb.BarStyle("╢▌▌░╟"),
mpb.PrependDecorators(
// display our name with one space on the right
decor.Name(name, decor.WC{W: len(name) + 1, C: decor.DidentRight}),
// replace ETA decorator with "done" message, OnComplete event
decor.OnComplete(
// ETA decorator with ewma age of 60, and width reservation of 4
decor.EwmaETA(decor.ET_STYLE_GO, 60, decor.WC{W: 4}), "done",
),
),
mpb.AppendDecorators(decor.Percentage()),
)
// simulating some work
max := 100 * time.Millisecond
for i := 0; i < total; i++ {
start := time.Now()
time.Sleep(time.Duration(rand.Intn(10)+1) * max / 10)
// ewma based decorators require work duration measurement
bar.IncrBy(1, time.Since(start))
}
// wait for our bar to complete and flush
p.Wait()
}
func ExampleBar_Completed() {
p := mpb.New()
bar := p.AddBar(100)
max := 100 * time.Millisecond
for !bar.Completed() {
time.Sleep(time.Duration(rand.Intn(10)+1) * max / 10)
bar.Increment()
}
p.Wait()
}
func ExampleBar_ProxyReader() {
p := mpb.New()
// make http get request, ignoring errors
resp, _ := http.Get("https://homebrew.bintray.com/bottles/libtiff-4.0.7.sierra.bottle.tar.gz")
defer resp.Body.Close()
// Assuming ContentLength > 0
bar := p.AddBar(resp.ContentLength,
mpb.AppendDecorators(
decor.CountersKibiByte("%6.1f / %6.1f"),
),
)
// create proxy reader
reader := bar.ProxyReader(resp.Body)
// and copy from reader, ignoring errors
io.Copy(ioutil.Discard, reader)
p.Wait()
}