Add quiet output

main.go

@@ -10,6 +10,7 @@ import (
 	"github.com/moncho/gh-download-count/output"
 )
 
+var quiet = flag.Bool("quiet", false, "shows just the download count")
 var detail = flag.Bool("detail", false, "shows download count per release")
 var json = flag.Bool("json", false, "generates a json with the download count")
 
@@ -18,7 +19,7 @@ func main() {
 	args := flag.Args()
 
 	if len(args) == 0 || len(args) > 2 {
-		fmt.Printf("Got %d args, was expecting 1 or 2.", len(args))
+		fmt.Printf("Got %d args, was expecting \"owner/repo\".\n", len(args))
 		return
 	}
 
@@ -34,6 +35,8 @@ func main() {
 		w = output.ASCIITableWriter{}
 	} else if *json {
 		w = output.JSONWriter{}
+	} else if *quiet {
+		w = output.QuietWriter{}
 	} else {
 		w = output.DefaultProjectWriter{}
 	}

output/default.go

@@ -11,7 +11,7 @@ import (
 type DefaultProjectWriter struct {
 }
 
-//Write writes the total download count on the given writer.s
+//Write writes the project name and the total download count on the given writer.
 func (w DefaultProjectWriter) Write(out io.Writer, p *api.Project) error {
 	_, err := fmt.Fprintf(out, "Project %s has been downloaded %d times.\n", p.Name, p.DownloadCount())
 	return err

output/quiet.go

@@ -0,0 +1,18 @@
+package output
+
+import (
+	"fmt"
+	"io"
+
+	"github.com/moncho/gh-download-count/api"
+)
+
+//QuietWriter just writes the download count.
+type QuietWriter struct {
+}
+
+//Write writes the total download count on the given writer.
+func (w QuietWriter) Write(out io.Writer, p *api.Project) error {
+	_, err := fmt.Fprintf(out, "%d\n", p.DownloadCount())
+	return err
+}