feat: support comparing Ubuntu versions (#300)

Author: G-Rath

pkg/semantic/parse.go

@@ -45,6 +45,8 @@ func Parse(str string, ecosystem internal.Ecosystem) (Version, error) {
 		return parsePyPIVersion(str), nil
 	case "RubyGems":
 		return parseRubyGemsVersion(str), nil
+	case "Ubuntu":
+		return parseDebianVersion(str), nil
 	}
 
 	return nil, fmt.Errorf("%w %s", ErrUnsupportedEcosystem, ecosystem)

pkg/semantic/parse_test.go

@@ -14,7 +14,7 @@ func TestParse(t *testing.T) {
 	ecosystems := lockfile.KnownEcosystems()
 
 	// todo: remove once CRAN is supported by lockfile
-	ecosystems = append(ecosystems, "CRAN")
+	ecosystems = append(ecosystems, "CRAN", "Ubuntu")
 
 	for _, ecosystem := range ecosystems {
 		_, err := semantic.Parse("", ecosystem)
@@ -37,7 +37,7 @@ func TestMustParse(t *testing.T) {
 	ecosystems := lockfile.KnownEcosystems()
 
 	// todo: remove once CRAN is supported by lockfile
-	ecosystems = append(ecosystems, "CRAN")
+	ecosystems = append(ecosystems, "CRAN", "Ubuntu")
 
 	for _, ecosystem := range ecosystems {
 		semantic.MustParse("", ecosystem)