fix #59: processDir should call processFile instead.

cmd/um/main.go

@@ -236,13 +236,7 @@ func (p *processor) processDir(inputDir string) error {
 		}
 
 		filePath := filepath.Join(inputDir, item.Name())
-		allDec := common.GetDecoder(filePath, p.skipNoopDecoder)
-		if len(allDec) == 0 {
-			logger.Info("skipping while no suitable decoder", zap.String("source", item.Name()))
-			continue
-		}
-
-		if err := p.process(filePath, allDec); err != nil {
+		if err := p.processFile(filePath); err != nil {
 			logger.Error("conversion failed", zap.String("source", item.Name()), zap.Error(err))
 		}
 	}