make: download tarballs from sr.ht

and add a test for the tarball URL generation.

make.go

@@ -139,28 +139,37 @@ func (u *upstream) get(gopath, repo, rev string) error {
 	return rr.VCS.Create(dir, rr.Repo)
 }
 
-func (u *upstream) tarballFromHoster() error {
-	var tarURL string
+func (u *upstream) tarballUrl() (string, error) {
 	repo := strings.TrimSuffix(u.rr.Repo, ".git")
 	repoU, err := url.Parse(repo)
 	if err != nil {
-		return fmt.Errorf("parse URL: %w", err)
+		return "", fmt.Errorf("parse URL: %w", err)
 	}
 
 	switch repoU.Host {
 	case "github.com":
-		tarURL = fmt.Sprintf("%s/archive/%s.tar.%s",
-			repo, u.tag, u.compression)
+		return fmt.Sprintf("%s/archive/%s.tar.%s",
+			repo, u.tag, u.compression), nil
 	case "gitlab.com", "salsa.debian.org":
 		parts := strings.Split(repoU.Path, "/")
 		if len(parts) < 3 {
-			return fmt.Errorf("incomplete repo URL: %s", u.rr.Repo)
+			return "", fmt.Errorf("incomplete repo URL: %s", u.rr.Repo)
 		}
 		project := parts[2]
-		tarURL = fmt.Sprintf("%s/-/archive/%s/%s-%s.tar.%s",
-			repo, u.tag, project, u.tag, u.compression)
+		return fmt.Sprintf("%s/-/archive/%s/%s-%s.tar.%s",
+			repo, u.tag, project, u.tag, u.compression), nil
+	case "git.sr.ht":
+		return fmt.Sprintf("%s/archive/%s.tar.%s",
+			repo, u.tag, u.compression), nil
 	default:
-		return errUnsupportedHoster
+		return "", errUnsupportedHoster
+	}
+}
+
+func (u *upstream) tarballFromHoster() error {
+	tarURL, err := u.tarballUrl()
+	if err != nil {
+		return err
 	}
 
 	done := make(chan struct{})

make_test.go

@@ -2,6 +2,8 @@ package main
 
 import (
 	"testing"
+
+	"golang.org/x/tools/go/vcs"
 )
 
 var shortName = []struct {
@@ -67,3 +69,30 @@ func TestDebianNameFromGopkg(t *testing.T) {
 		}
 	}
 }
+
+var tarballUrl = []struct {
+	repoRoot    string
+	tag         string
+	compression string
+	url         string
+}{
+	{"https://github.com/Debian/dh-make-golang", "0.6.0", "gz", "https://github.com/Debian/dh-make-golang/archive/0.6.0.tar.gz"},
+	{"https://github.com/Debian/dh-make-golang.git", "0.6.0", "gz", "https://github.com/Debian/dh-make-golang/archive/0.6.0.tar.gz"},
+	{"https://gitlab.com/gitlab-org/labkit", "1.3.0", "gz", "https://gitlab.com/gitlab-org/labkit/-/archive/1.3.0/labkit-1.3.0.tar.gz"},
+	{"https://git.sr.ht/~sircmpwn/getopt", "v1.0.0", "gz", "https://git.sr.ht/~sircmpwn/getopt/archive/v1.0.0.tar.gz"},
+}
+
+func TestUpstreamTarmballUrl(t *testing.T) {
+	for _, tt := range tarballUrl {
+		u := upstream{
+			rr:          &vcs.RepoRoot{Repo: tt.repoRoot},
+			compression: tt.compression,
+			tag:         tt.tag,
+		}
+
+		url, _ := u.tarballUrl()
+		if url != tt.url {
+			t.Errorf("TestUpstreamTarmballUrl(%q) => %q, want %q", tt.repoRoot, url, tt.url)
+		}
+	}
+}