dont't show and remove checksum files by default

README.md

@@ -8,13 +8,12 @@ downloaded	4 + 1 checksum file(s)
 verified	4
 
 > ghrel -l -p '*linux*' jreisinger/ghrel
-Asset                           Checksum file  Updated     Size     Download count
------                           -------------  -------     ----     --------------
-checksums.txt                   true           2023-04-12  976      1
-ghrel_0.7.0_linux_386.tar.gz    false          2023-04-12  2028791  1
-ghrel_0.7.0_linux_amd64.tar.gz  false          2023-04-12  2142561  1
-ghrel_0.7.0_linux_arm64.tar.gz  false          2023-04-12  1972445  1
-ghrel_0.7.0_linux_armv6.tar.gz  false          2023-04-12  2006885  1
+Asset                           Updated     Size     Download count
+-----                           -------     ----     --------------
+ghrel_0.7.1_linux_386.tar.gz    2023-04-12  2029844  2
+ghrel_0.7.1_linux_amd64.tar.gz  2023-04-12  2143213  2
+ghrel_0.7.1_linux_arm64.tar.gz  2023-04-12  1973067  2
+ghrel_0.7.1_linux_armv6.tar.gz  2023-04-12  2007574  2
 ```
 
 To use ghrel, download a [binary](https://github.com/jreisinger/ghrel/releases) for your system and architecture or `go install github.com/jreisinger/ghrel@latest`.

asset/asset.go

@@ -87,14 +87,17 @@ func Download(a Asset) error {
 	return nil
 }
 
-// Print prints table of assets.
-func Print(assets []Asset) {
-	const format = "%v\t%v\t%v\t%v\t%v\n"
+// List prints table of assets.
+func List(assets []Asset, showChecksumFiles bool) {
+	const format = "%v\t%v\t%v\t%v\n"
 	tw := new(tabwriter.Writer).Init(os.Stdout, 0, 8, 2, ' ', 0)
-	fmt.Fprintf(tw, format, "Asset", "Checksum file", "Updated", "Size", "Download count")
-	fmt.Fprintf(tw, format, "-----", "-------------", "-------", "----", "--------------")
+	fmt.Fprintf(tw, format, "Asset", "Updated", "Size", "Download count")
+	fmt.Fprintf(tw, format, "-----", "-------", "----", "--------------")
 	for _, a := range assets {
-		fmt.Fprintf(tw, format, a.Name, a.IsChecksumFile, a.UpdatedAt.Format("2006-01-02"), a.Size, a.DownloadCount)
+		if a.IsChecksumFile && !showChecksumFiles {
+			continue
+		}
+		fmt.Fprintf(tw, format, a.Name, a.UpdatedAt.Format("2006-01-02"), a.Size, a.DownloadCount)
 	}
 	tw.Flush()
 }

main.go

@@ -11,8 +11,9 @@ import (
 	"github.com/jreisinger/ghrel/checksum"
 )
 
-var l = flag.Bool("l", false, "just list assets")
-var p = flag.String("p", "", "only assets matching shell `pattern` (doesn't apply to checksums files)")
+var c = flag.Bool("c", false, "keep (or list) checksum files")
+var l = flag.Bool("l", false, "only list assets")
+var p = flag.String("p", "", "assets matching shell `pattern` (doesn't apply to checksum files)")
 
 func main() {
 	flag.Usage = func() {
@@ -39,7 +40,7 @@ func main() {
 	}
 
 	if *l {
-		asset.Print(assets)
+		asset.List(assets, *c)
 		os.Exit(0)
 	}
 
@@ -65,6 +66,15 @@ func main() {
 	}
 	wg.Wait()
 
+	// Remove checksum files.
+	defer func() {
+		if !*c {
+			if err := removeChecksumFiles(assets); err != nil {
+				log.Print(err)
+			}
+		}
+	}()
+
 	// Print download statistics.
 	nFiles, nCheckumsFiles := asset.Count(assets)
 	fmt.Printf("downloaded\t%d + %d checksum file(s)\n", nFiles, nCheckumsFiles)
@@ -107,3 +117,14 @@ Asset:
 	}
 	fmt.Printf("verified\t%d\n", verifiedFiles)
 }
+
+func removeChecksumFiles(assets []asset.Asset) error {
+	for _, a := range assets {
+		if a.IsChecksumFile {
+			if err := os.Remove(a.Name); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}