在Go(golang)中展示进度条:MultiBar

jopen 9年前

在Go(golang)中展示进度条:MultiBar。

$ go run main.go  here we have a progress bar    some work  30% [====================>-------------------------------------------] 925ms  and here we have another progress bar  here we have a longer prepend string  25% [==========>--------------------------] 911ms  working...  19% [=============>-------------------------------------------------] 911ms

Display Options:

When you call .MakeBar(total int, prepend string), the returned progress bar has options that you can change to fit your needs. Here are the defaults:

- Width:           screen width - len(prepend) - 20  - Total:           total (passed in)  - Prepend:         prepend (passed in)  - LeftEnd:         '['  - RightEnd:        ']'  - Fill:            '='  - Head:            '>'  - Empty:           '-'  - ShowPercent:     true  - ShowTimeElapsed: true

Example usage:

example gif

(note, in the example gif, we are manually resetting the terminal mode. We NO LONGER have to, issue fixed)

    package main        import (          "fmt"          "sync"          "time"            "github.com/sethgrid/multibar"      )        func main() {          // create the multibar container          // this allows our bars to work together without stomping on one another          progressBars, _ := multibar.New()            // some arbitrary totals for our  progress bars          // in practice, these could be file sizes or similar          mediumTotal, smallTotal, largerTotal := 150, 100, 200            // make some output for the screen          // the MakeBar(total, prependString) returns a method that you can pass progress into          progressBars.Println("Below are many progress bars.")          progressBars.Println("It is best to use the print wrappers to keep output synced up.")          progressBars.Println("We can switch back to normal fmt after our progress bars are done.\n")            // we will update the progress down below in the mock work section with barProgress1(int)          barProgress1 := progressBars.MakeBar(mediumTotal, "1st")            progressBars.Println()          progressBars.Println("We can separate bars with blocks of text, or have them grouped.\n")            barProgress2 := progressBars.MakeBar(smallTotal, "2nd - with description:")          barProgress3 := progressBars.MakeBar(largerTotal, "3rd")          barProgress4 := progressBars.MakeBar(mediumTotal, "4th")          barProgress5 := progressBars.MakeBar(smallTotal, "5th")          barProgress6 := progressBars.MakeBar(largerTotal, "6th")            progressBars.Println("And we can have blocks of text as we wait for progress bars to complete...")            // listen in for changes on the progress bars          // I should be able to move this into the constructor at some point          go progressBars.Listen()            /*                *** mock work ***              spawn some goroutines to do arbitrary work, updating their              respective progress bars as they see fit            */          wg := &sync.WaitGroup{}          wg.Add(6)          go func() {              // do something asyn that we can get updates upon              // every time an update comes in, tell the bar to re-draw              // this could be based on transferred bytes or similar              for i := 0; i <= mediumTotal; i++ {                  barProgress1(i)                  time.Sleep(time.Millisecond * 15)              }              wg.Done()          }()            go func() {              for i := 0; i <= smallTotal; i++ {                  barProgress2(i)                  time.Sleep(time.Millisecond * 25)              }              wg.Done()          }()            go func() {              for i := 0; i <= largerTotal; i++ {                  barProgress3(i)                  time.Sleep(time.Millisecond * 12)              }              wg.Done()          }()            go func() {              for i := 0; i <= mediumTotal; i++ {                  barProgress4(i)                  time.Sleep(time.Millisecond * 10)              }              wg.Done()          }()          go func() {              for i := 0; i <= smallTotal; i++ {                  barProgress5(i)                  time.Sleep(time.Millisecond * 20)              }              wg.Done()          }()          go func() {              for i := 0; i <= largerTotal; i++ {                  barProgress6(i)                  time.Sleep(time.Millisecond * 10)              }              wg.Done()          }()          wg.Wait()            // continue doing other work          fmt.Println("All Bars Complete")      }

项目主页:http://www.open-open.com/lib/view/home/1418010518808