improve cli stdout progress.

cmd/got/main.go

@@ -4,8 +4,10 @@ import (
 	"flag"
 	"fmt"
 	"log"
+	"os"
 	"time"
 
+	"github.com/apoorvam/goterminal"
 	"github.com/dustin/go-humanize"
 	"github.com/melbahja/got"
 )
@@ -58,24 +60,33 @@ func main() {
 		log.Fatal(err)
 	}
 
+	// Goterm writer.
+	writer := goterminal.New(os.Stdout)
+
 	// Set progress func to update cli output.
 	d.Progress.ProgressFunc = func(p *got.Progress, d *got.Download) {
 
-		fmt.Printf(
-			"\r\r\bTotal: %s | Chunk: %s | Concurrency: %d | Received: %s | Time: %s | Avg: %s/s | Speed: %s/s",
-			humanize.Bytes(p.TotalSize),
-			humanize.Bytes(d.ChunkSize),
-			d.Concurrency,
+		writer.Clear()
+
+		fmt.Fprintf(
+			writer,
+			"Downloading: (%s/%s) | Time: %s | Avg: %s/s | Speed: %s/s | Chunk: %s | Concurrency: %d\n",
 			humanize.Bytes(p.Size),
+			humanize.Bytes(p.TotalSize),
 			p.TotalCost().Round(time.Second),
 			humanize.Bytes(p.AvgSpeed()),
 			humanize.Bytes(p.Speed()),
+			humanize.Bytes(d.ChunkSize),
+			d.Concurrency,
 		)
+
+		writer.Print()
 	}
 
 	if err := d.Start(); err != nil {
 		log.Fatal(err)
 	}
 
-	fmt.Println(" | Done!")
+	writer.Reset()
+	fmt.Println("Done!")
 }

go.mod

@@ -3,6 +3,8 @@ module github.com/melbahja/got
 go 1.14
 
 require (
+	github.com/apoorvam/goterminal v0.0.0-20180523175556-614d345c47e5
 	github.com/dustin/go-humanize v1.0.0
+	github.com/mattn/go-isatty v0.0.12 // indirect
 	golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208
 )

go.sum

@@ -1,4 +1,10 @@
+github.com/apoorvam/goterminal v0.0.0-20180523175556-614d345c47e5 h1:VYqcjykqpcq262cDxBAkAelSdg6HETkxgwzQRTS40Aw=
+github.com/apoorvam/goterminal v0.0.0-20180523175556-614d345c47e5/go.mod h1:E7x8aDc3AQzDKjEoIZCt+XYheHk2OkP+p2UgeNjecH8=
 github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
+github.com/mattn/go-isatty v0.0.12 h1:wuysRhFDzyxgEmMf5xjvJ2M9dZoWAXNNr5LSBS7uHXY=
+github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208 h1:qwRHBd0NqMbJxfbotnDhm2ByMI1Shq4Y6oRJo21SGJA=
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20200116001909-b77594299b42 h1:vEOn+mP2zCOVzKckCZy6YsCtDblrpj/w7B9nxGNELpg=
+golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=

got.go

@@ -287,6 +287,7 @@ func (d *Download) GetInfo() (Info, error) {
 
 // Merge downloaded chunks.
 func (d *Download) merge(ctx context.Context) error {
+
 	file, err := os.Create(d.Dest)
 	if err != nil {
 		return err