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HTWingNut
Asked: 2020-05-17 10:51:35 +0800 CST

带有感叹号“！”的 Windows 批处理循环文件名 问题

  • 772

感叹号是我使用 Windows Batch 的祸根。假设我只想跳过其中包含的文件名!。

我知道在 for 循环中检查变量中的常规文本，我可以运行：

setlocal enabledelayedexpansion
for /r %%a in (*) do (
set fname=%%~na
if not "!fname!"=="!fname:text=!" ECHO File contains the word "text"
)

但是如何指定感叹号呢？

我试图用 ^ 来逃避它："!fname:^!=!"

然后我看到使用 enabledelayedexpansion 你需要一个^^!来转义角色。所以我尝试了没有运气。然后我想可能三个^^^!两个来逃避延迟扩展，一个在文件名中......

没运气...

有什么建议么？

windows command-line

1 个回答

  1. Best Answer

    以下注释脚本揭示了秘密：

    @ECHO OFF

SETLOCAL EnableExtensions DisableDelayedExpansion
echo --- disabled delayed expansion: real file names
FOR /R "D:\bat\Unusual Names" %%G in (*exc*) DO (
  echo(%%~nG 
)
ENDLOCAL
echo(

SETLOCAL EnableExtensions EnableDelayedExpansion
echo --- enabled delayed expansion chokes down unescaped exclamation marks
echo                               (or expands !variables!)
FOR /R "D:\bat\Unusual Names" %%G in (*exc*) DO (
  echo(%%~nG 
)
ENDLOCAL
echo(

SETLOCAL EnableExtensions DisableDelayedExpansion
echo --- SET variables under delayed expansion DISABLED
echo       and USE them with delayed expansion ENABLED as follows
FOR /R "D:\bat\Unusual Names" %%G in (*exc*) DO (
  set "_fname=%%~nG"
  call :replace
  SETLOCAL EnableDelayedExpansion
    if "!_fname!"=="!_gname!" (
      echo(!_fname! == !_gname!
    ) else (
      echo(!_fname! ## !_gname!
    )
  ENDLOCAL
)
ENDLOCAL
goto :eof

:replace
  set "_gname=%_fname:exc!=%"
goto :eof

    结果：D:\bat\SU\1552419.bat

    --- disabled delayed expansion: real file names
01exclam!ation
02exc!lam!ation
04exc!lam!ation!OS!%OS%

--- enabled delayed expansion chokes down unescaped exclamation marks
                              and expands unescapet percent signs
01exclamation
02excation
04excationWindows_NT%OS%

--- SET variables under delayed expansion DISABLED
      and USE them with delayed expansion ENABLED as follows
01exclam!ation == 01exclam!ation
02exc!lam!ation ## 02lam!ation
04exc!lam!ation!OS!%OS% ## 04lam!ation!OS!%OS%
    • 3

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