refactor: GIF 单独归类、跨文件系统复制回退与异常处理优化

core/file_scanner.go

@@ -34,7 +34,12 @@ func doReadFileMimeInfo() {
 	bar.SetNoticeColor(goPrint.FontColor.Red)
 	for _, currentPath := range vars.GlobalFilePathList {
 		// mime
-		vars.GlobalFilePath2MimeInfoMap[currentPath] = util.ReadFileMimeInfo(currentPath).String()
+		mt := util.ReadFileMimeInfo(currentPath)
+		if mt != nil {
+			vars.GlobalFilePath2MimeInfoMap[currentPath] = mt.String()
+		} else {
+			vars.GlobalFilePath2MimeInfoMap[currentPath] = ""
+		}
 		count = count + 1
 		bar.PrintBar(util.CalcPercentage(count, total))
 	}