fix: hashicorp#479 allow nested repos for gitlab.com

detect_gitlab.go

@@ -23,25 +23,29 @@ func (d *GitLabDetector) Detect(src, _ string) (string, bool, error) {
 }
 
 func (d *GitLabDetector) detectHTTP(src string) (string, bool, error) {
-	parts := strings.Split(src, "/")
-	if len(parts) < 3 {
-		return "", false, fmt.Errorf(
-			"GitLab URLs should be gitlab.com/username/repo")
-	}
-
-	urlStr := fmt.Sprintf("https://%s", strings.Join(parts[:3], "/"))
-	repoUrl, err := url.Parse(urlStr)
+	repoUrl, err := url.Parse(fmt.Sprintf("https://%s", src))
 	if err != nil {
 		return "", true, fmt.Errorf("error parsing GitLab URL: %s", err)
 	}
 
-	if !strings.HasSuffix(repoUrl.Path, ".git") {
-		repoUrl.Path += ".git"
+	parts := strings.Split(repoUrl.Path, "//")
+
+	if len(strings.Split(parts[0], "/")) < 3 {
+		return "", false, fmt.Errorf(
+			"GitLab URLs should be gitlab.com/username/repo " +
+				"or gitlab.com/organization/project/repo")
 	}
 
-	if len(parts) > 3 {
-		repoUrl.Path += "//" + strings.Join(parts[3:], "/")
+	if len(parts) > 2 {
+		return "", false, fmt.Errorf(
+			"URL malformed: \"//\" can only used once in path")
+	}
+
+	if !strings.HasSuffix(parts[0], ".git") {
+		parts[0] += ".git"
 	}
 
+	repoUrl.Path = fmt.Sprintf("%s", strings.Join(parts, "//"))
+
 	return "git::" + repoUrl.String(), true, nil
 }

detect_gitlab_test.go

@@ -14,7 +14,7 @@ func TestGitLabDetector(t *testing.T) {
 		{"gitlab.com/hashicorp/foo.git", "git::https://gitlab.com/hashicorp/foo.git"},
 		{
 			"gitlab.com/hashicorp/foo/bar",
-			"git::https://gitlab.com/hashicorp/foo.git//bar",
+			"git::https://gitlab.com/hashicorp/foo/bar.git",
 		},
 		{
 			"gitlab.com/hashicorp/foo?foo=bar",
@@ -24,6 +24,26 @@ func TestGitLabDetector(t *testing.T) {
 			"gitlab.com/hashicorp/foo.git?foo=bar",
 			"git::https://gitlab.com/hashicorp/foo.git?foo=bar",
 		},
+		{
+			"gitlab.com/hashicorp/foo/bar",
+			"git::https://gitlab.com/hashicorp/foo/bar.git",
+		},
+		{
+			"gitlab.com/hashicorp/foo/bar.git",
+			"git::https://gitlab.com/hashicorp/foo/bar.git",
+		},
+		{
+			"gitlab.com/hashicorp/foo/bar.git//baz",
+			"git::https://gitlab.com/hashicorp/foo/bar.git//baz",
+		},
+		{
+			"gitlab.com/hashicorp/foo/bar//baz",
+			"git::https://gitlab.com/hashicorp/foo/bar.git//baz",
+		},
+		{
+			"gitlab.com/hashicorp/foo/bar.git//baz?foo=bar",
+			"git::https://gitlab.com/hashicorp/foo/bar.git//baz?foo=bar",
+		},
 	}
 
 	pwd := "/pwd"