Support to read go.mod recursively to get module path

common/common.go

@@ -126,16 +126,21 @@ func GetGOPATH() string {
 
 // GetModuleName returns the value of module in `go.mod` file.
 func GetModuleName(pathToProjectRoot string) (string, error) {
-	gomodPath := filepath.Join(pathToProjectRoot, "go.mod")
+	var moduleName string
+	loopPath := pathToProjectRoot
+	for {
+		if idx := strings.LastIndex(loopPath, string(filepath.Separator)); idx >= 0 {
+			gomodPath := filepath.Join(loopPath, "go.mod")
 			gomodBytes, err := ioutil.ReadFile(gomodPath)
 			if err != nil {
-		return "", err
+				loopPath = loopPath[:idx]
+				continue
 			}
+
 			gomodContent := string(gomodBytes)
 			moduleIdx := strings.Index(gomodContent, "module ")
 			newLineIdx := strings.Index(gomodContent, "\n")
 
-	var moduleName string
 			if moduleIdx >= 0 {
 				if newLineIdx >= 0 {
 					moduleName = strings.TrimSpace(gomodContent[moduleIdx+6 : newLineIdx])
@@ -143,8 +148,11 @@ func GetModuleName(pathToProjectRoot string) (string, error) {
 				} else {
 					moduleName = strings.TrimSpace(gomodContent[moduleIdx+6:])
 				}
-	} else {
-		return "", fmt.Errorf("can not get module path in `%s`", gomodPath)
-	}
 				return moduleName, nil
 			}
+			return "", fmt.Errorf("can not get module path in `%s`", gomodPath)
+		}
+		break
+	}
+	return moduleName, fmt.Errorf("no `go.mod` file in every parent directory of `%s`", pathToProjectRoot)
+}