Add support for archive.tar.xz

( will send upstream after testing whether it works )

internal/git/archive.go

@@ -48,6 +48,8 @@ func (a *archive) Inject(w http.ResponseWriter, r *http.Request, sendData string
 		format = "tar.gz"
 	case "archive.tar.bz2":
 		format = "tar.bz2"
+	case "archive.tar.xz":
+		format = "tar.xz"
 	default:
 		helper.Fail500(w, fmt.Errorf("handleGetArchive: invalid format: %s", urlPath))
 		return
@@ -163,6 +165,8 @@ func parseArchiveFormat(format string) (*exec.Cmd, string) {
 		return exec.Command("gzip", "-c", "-n"), "tar"
 	case "tar.bz2":
 		return exec.Command("bzip2", "-c"), "tar"
+	case "tar.xz":
+		return exec.Command("xz", "-c"), "tar"
 	case "zip":
 		return nil, "zip"
 	}

main_test.go

@@ -189,6 +189,25 @@ func TestAllowedDownloadTarBz2(t *testing.T) {
 	runOrFail(t, extractCmd)
 }
 
+func TestAllowedDownloadTarXz(t *testing.T) {
+	prepareDownloadDir(t)
+
+	// Prepare test server and backend
+	archiveName := "foobar.tar.xz"
+	ts := archiveOKServer(t, archiveName)
+	defer ts.Close()
+	ws := startWorkhorseServer(ts.URL)
+	defer ws.Close()
+
+	downloadCmd := exec.Command("curl", "-J", "-O", fmt.Sprintf("%s/%s/repository/archive.tar.xz", ws.URL, testProject))
+	downloadCmd.Dir = scratchDir
+	runOrFail(t, downloadCmd)
+
+	extractCmd := exec.Command("tar", "Jxf", archiveName)
+	extractCmd.Dir = scratchDir
+	runOrFail(t, extractCmd)
+}
+
 func TestAllowedApiDownloadZip(t *testing.T) {
 	prepareDownloadDir(t)