fix: newer golang archive aren't decompressed correctly

cmd/cmd.go

@@ -305,7 +305,7 @@ func ls(ctx *cli.Context) error {
 
 	for _, i := range items {
 		if i.IsDir() && i.Name() != "go" {
-			fmt.Println(i.Name())
+			fmt.Println(strings.Replace(i.Name(), "go", "", 1))
 		}
 	}
 

pkg/release.go

@@ -54,7 +54,7 @@ func (d *Release) DownloadRelease() error {
 
 // downloadFile downloads the file to the given writer
 func (d *Release) downloadFile(f *os.File) error {
-	s := spinner.New(spinner.CharSets[35], 100*time.Millisecond)
+	s := spinner.New(spinner.CharSets[14], 100*time.Millisecond)
 	s.Suffix = " Downloading release..."
 	s.Start()
 	defer s.Stop()
@@ -110,9 +110,11 @@ func (d *Release) ExtractRelease() error {
 
 		// skip first folder
 		if start {
-			rootFolder = h.Name
+			rootFolder = strings.Split(h.Name, string(os.PathSeparator))[0]
 			start = false
-			continue
+			if h.Typeflag == tar.TypeDir {
+				continue
+			}
 		}
 
 		target := filepath.Join(d.releaseFolder, strings.Replace(h.Name, rootFolder, "", 1))
@@ -124,7 +126,19 @@ func (d *Release) ExtractRelease() error {
 		case tar.TypeReg:
 			file, err := os.OpenFile(target, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, h.FileInfo().Mode())
 			if err != nil {
-				return err
+				// for 1.21.xx, folder aren't detected as tar.TypeDir
+				if os.IsNotExist(err) {
+					if err := os.MkdirAll(filepath.Dir(target), 0755); err != nil {
+						return err
+					}
+
+					file, err = os.OpenFile(target, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, h.FileInfo().Mode())
+					if err != nil {
+						return err
+					}
+				} else {
+					return err
+				}
 			}
 
 			if _, err = io.Copy(file, tarReader); err != nil {
@@ -152,6 +166,19 @@ func (d *Release) CheckReleaseExists() error {
 		return ErrReleaseNotFound
 	}
 
+	entries, err := os.ReadDir(d.releaseFolder)
+	if err != nil {
+		return err
+	}
+
+	if len(entries) == 0 {
+		if err := os.RemoveAll(d.releaseFolder); err != nil {
+			return err
+		}
+
+		return ErrReleaseNotFound
+	}
+
 	return nil
 }
 

pkg/tags.go

@@ -23,7 +23,7 @@ type Tags struct {
 }
 
 func NewTags(release string, ctx context.Context) TagsAction {
-	return Tags{
+	return &Tags{
 		release: release,
 		client:  *github.NewClient(nil),
 		ctx:     ctx,
@@ -34,7 +34,7 @@ func NewTags(release string, ctx context.Context) TagsAction {
 // the given release exists in it
 //
 // Returns the found release or an error
-func (t Tags) GetRelease(beta, rc bool) (string, error) {
+func (t *Tags) GetRelease(beta, rc bool) (string, error) {
 	if t.release == LTS {
 		return t.getLatestTag(beta, rc)
 	}
@@ -91,7 +91,7 @@ func (t Tags) GetRelease(beta, rc bool) (string, error) {
 //
 // Returns a list of tags reference if there is as least one
 // or an error otherwise.
-func (t Tags) GetTagsRef() ([]*github.Reference, error) {
+func (t *Tags) GetTagsRef() ([]*github.Reference, error) {
 	refs, response, err := t.client.Git.ListMatchingRefs(t.ctx, "golang", "go", &github.ReferenceListOptions{
 		Ref: "tags/go",
 	})
@@ -113,7 +113,7 @@ func (t Tags) GetTagsRef() ([]*github.Reference, error) {
 // beta and rc version can be specified.
 //
 // Returns the latest release or an error
-func (t Tags) getLatestTag(beta, rc bool) (string, error) {
+func (t *Tags) getLatestTag(beta, rc bool) (string, error) {
 	refs, err := t.GetTagsRef()
 	if err != nil {
 		if err == ErrEmptyTags {