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Advanced terminal output in Go
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buger/goterm
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This library provides basic building blocks for building advanced console UIs.
Initially created forGor.
Full API documentation:http://godoc.org/github.com/buger/goterm
Full screen console app, printing current time:
import ( tm"github.com/buger/goterm""time")funcmain() {tm.Clear()// Clear current screenfor {// By moving cursor to top-left position we ensure that console output// will be overwritten each time, instead of adding new.tm.MoveCursor(1,1)tm.Println("Current Time:",time.Now().Format(time.RFC1123))tm.Flush()// Call it every time at the end of renderingtime.Sleep(time.Second) }}
This can be seen inexamples/time_example.go. Torun it yourself, go into your$GOPATH/src/github.com/buger/goterm directoryand rungo run ./examples/time_example.go
Print red bold message on white background:
tm.Println(tm.Background(tm.Color(tm.Bold("Important header"),tm.RED),tm.WHITE))
Create box and move it to center of the screen:
tm.Clear()// Create Box with 30% width of current screen, and height of 20 linesbox:=tm.NewBox(30|tm.PCT,20,0)// Add some content to the box// Note that you can add ANY content, even tablesfmt.Fprint(box,"Some box content")// Move Box to approx center of the screentm.Print(tm.MoveTo(box.String(),40|tm.PCT,40|tm.PCT))tm.Flush()
This can be found inexamples/box_example.go.
Draw table:
// Based on http://golang.org/pkg/text/tabwritertotals:=tm.NewTable(0,10,5,' ',0)fmt.Fprintf(totals,"Time\tStarted\tActive\tFinished\n")fmt.Fprintf(totals,"%s\t%d\t%d\t%d\n","All",started,started-finished,finished)tm.Println(totals)tm.Flush()
This can be found inexamples/table_example.go.
Chart example:
import ( tm"github.com/buger/goterm" )chart:=tm.NewLineChart(100,20)data:=new(tm.DataTable)data.AddColumn("Time")data.AddColumn("Sin(x)")data.AddColumn("Cos(x+1)")fori:=0.1;i<10;i+=0.1 {data.AddRow(i,math.Sin(i),math.Cos(i+1)) }tm.Println(chart.Draw(data))
This can be found inexamples/chart_example.go.
Drawing 2 separate graphs in different scales. Each graph have its own Y axe.
chart.Flags=tm.DRAW_INDEPENDENT
Drawing graph with relative scale (Grapwh draw starting from min value instead of zero)
chart.Flags=tm.DRAW_RELATIVE
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Advanced terminal output in Go