fix #1308: load .env file as environment variables

hrp/internal/builtin/utils.go

@@ -294,12 +294,45 @@ func LoadFile(path string, structObj interface{}) (err error) {
 		err = decoder.Decode(structObj)
 	case ".yaml", ".yml":
 		err = yaml.Unmarshal(file, structObj)
+	case ".env":
+		err = parseEnvContent(file, structObj)
 	default:
 		err = ErrUnsupportedFileExt
 	}
 	return err
 }
 
+func parseEnvContent(file []byte, obj interface{}) error {
+	envMap := obj.(map[string]string)
+	lines := strings.Split(string(file), "\n")
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		if line == "" || strings.HasPrefix(line, "#") {
+			// empty line or comment line
+			continue
+		}
+		var kv []string
+		if strings.Contains(line, "=") {
+			kv = strings.SplitN(line, "=", 2)
+		}
+		if strings.Contains(line, ":") {
+			kv = strings.SplitN(line, ":", 2)
+		}
+		if len(kv) != 2 {
+			return errors.New(".env format error")
+		}
+
+		key := strings.TrimSpace(kv[0])
+		value := strings.TrimSpace(kv[1])
+		envMap[key] = value
+
+		// set env
+		log.Info().Str("key", key).Msg("set env")
+		os.Setenv(key, value)
+	}
+	return nil
+}
+
 func loadFromCSV(path string) []map[string]interface{} {
 	log.Info().Str("path", path).Msg("load csv file")
 	file, err := readFile(path)