clean up the code for fetching registries

manager/manager/typeresolver.go

@@ -244,7 +244,7 @@ func (tr *typeResolver) ShortTypeToDownloadURLs(template string) ([]string, erro
 	if len(m) != 6 {
 		return []string{}, fmt.Errorf("Failed to parse short github url: %s", template)
 	}
-	r, err := tr.rp.GetRegistry("github.com/" + m[1] + "/" + m[2])
+	r, err := tr.rp.GetRegistry(template)
 	if err != nil {
 		return []string{}, err
 	}
@@ -262,7 +262,7 @@ func (tr *typeResolver) ShortTypeToPackageDownloadURLs(template string) ([]strin
 	if len(m) != 4 {
 		return []string{}, fmt.Errorf("Failed to parse short github url: %s", template)
 	}
-	r, err := tr.rp.GetRegistry("github.com/" + m[1] + "/" + m[2])
+	r, err := tr.rp.GetRegistry(template)
 	if err != nil {
 		return []string{}, err
 	}

registry/inmem_repository_service.go

@@ -70,7 +70,7 @@ func (rs *inmemRepositoryService) Delete(name string) error {
 // GetByURL returns a registry that handles the types for a given URL.
 func (rs *inmemRepositoryService) GetByURL(URL string) (*common.Registry, error) {
 	for _, r := range rs.repositories {
-		if strings.HasPrefix(r.URL, URL) {
+		if strings.HasPrefix(URL, r.URL) {
 			return r, nil
 		}
 	}