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Bricktop
Asked: 2024-02-25 20:50:29 +0800 CST

如何跳过 FOR 循环中的一个循环？

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我正在运行批处理脚本来处理一些文件。当它确定当前文件不需要处理时，我想跳过该文件的其余命令并直接移至下一个。如何？Goto :EOF并且exit /b都退出整个脚本。

这是脚本。它需要一个目录并重命名所有文件以包含父目录名称中的所有单词（文件名中已包含的单词除外）。

@echo off
setlocal enabledelayedexpansion

rem set input directory (add check for validity)
set "inputDir=%~1"
set "confirmation=false"

:proceed
for /r "%inputDir%" %%F in (*.*) do (
    rem use path to file as keywords
    set "words=%%~pF"
    rem replace known useless marks with spaces
    set "words=!words:\= !"
    set "words=!words:_= !"
    set "words=!words:,= !"
    set "words=!words:  = !"
    rem remove known useless words
    set "words=!words: The = !"
    set "words=!words: A = !"
    set "words=!words: An = !"
    set "words=!words: Video = !"
    set "words=!words: New Folder = !"
    rem remove word that already exists in the filename
    for %%W in (!words!) do echo %%~nF | find /i "%%W" >nul && set "words=!words: %%W = !"
    rem replace leading and trailing spaces with brackets
    set "words=[!words:~1,-1!]"
    rem if all words already included end task for current file
    if "!words!"=="[]" exit /b
    rem build the new filename
    set "newName=%%~nF !words!%%~xF"
    rem fix "] [" caused by repeated renaming, causes fusion with non-related bracketed sets, which is fine
    set "newName=!newName:] [= !"
    rem task for displaying the name change for confirmation
    if /i not "%confirmation%"=="yes" echo old "%%F" && echo new "!newName!"
    rem task for doing the actual rename if confirmed
     if /i "%confirmation%"=="yes" echo ren "%%~nxF" "!newName!" & echo ren "%%F" "!newName!"
)

rem fails to rename files with ! mark in the filename. no other trouble, just won't rename those. error: the syntax of the command is incorrect

rem if coming from second (completed) run then exit
if /i "%confirmation%"=="yes" exit /b
rem ask for confirmation to run again for real
set /p confirmation="confirm you want to perform all these rename tasks (type yes or no)?: "
if /i not "%confirmation%"=="yes" echo confirmation denied
if /i "%confirmation%"=="yes" goto proceed

endlocal

我也在尝试一种有条件地运行最后命令的替代方法，如下所示

@echo off
setlocal enabledelayedexpansion

rem set input directory (add check for validity)
set "inputDir=%~1"
set "confirmation=false"

:proceed
for /r "%inputDir%" %%F in (*.*) do (
    rem use path to file as keywords
    set "words=%%~pF"
    rem replace known useless marks with spaces
    set "words=!words:\= !"
    set "words=!words:_= !"
    set "words=!words:,= !"
    set "words=!words:  = !"
    rem remove known useless words
    set "words=!words: The = !"
    set "words=!words: A = !"
    set "words=!words: An = !"
    set "words=!words: Video = !"
    set "words=!words: New Folder = !"
    rem remove word that already exists in the filename
    for %%W in (!words!) do echo %%~nF | find /i "%%W" >nul && set "words=!words: %%W = !"
    rem replace leading and trailing spaces with brackets
    set "words=[!words:~1,-1!]"
    rem if all words not already included in the filename do
    if not "!words!"=="[]" (
        rem build the new filename
        set "newName=%%~nF !words!%%~xF"
        rem fix "] [" caused by repeated renaming, causes fusion with non-related bracketed sets, which is fine
        set "newName=!newName:] [= !"
        rem task for displaying the name change for confirmation
        if /i not "%confirmation%"=="yes" echo old "%%F" && echo new "!newName!"
        rem task for doing the actual rename if confirmed
        if /i "%confirmation%"=="yes" echo ren "%%~nxF" "!newName!" & echo ren "%%F" "!newName!"
    )
)

rem fails to rename files with ! mark in the filename. no other trouble, just won't rename those. error: the syntax of the command is incorrect

rem if coming from second (completed) run then exit
if /i "%confirmation%"=="yes" exit /b
rem ask for confirmation to run again for real
set /p confirmation="confirm you want to perform all these rename tasks (type yes or no)?: "
if /i not "%confirmation%"=="yes" echo confirmation denied
if /i "%confirmation%"=="yes" goto proceed

endlocal

但这是一场灾难，导致文件名被从文件名中看似随机的部分中删除并words添加了。

windows

2 个回答

  1. Best Answer

    只需放置一个标签:nextiteration（或您喜欢的任何其他名称）作为 for 循环主体内的最后一个语句，并goto在您决定跳过 for 主体的其余部分时放置到该标签。

    • 6

  2. Windows 批处理没有太多用于跳过循环迭代的选项。您可以使用的方法有：

    • 在您想要跳过的循环部分放置一个 IF 块：

      @Echo Off
if A equ A (
  IF B==C (
    Echo shouldn't go here
  )
)

    • 用于call调用包含整个内部循环的例程，其中exit/B将起作用：

       @Echo Off
 Setlocal 
 For %%A in (alpha beta gamma) DO (
   Echo Outer loop %%A
   Call :inner 
 )
 Goto :eof

 :inner
 For %%B in (U V W X Y Z) DO (
   if %%B==X ( exit /b 2 )
   Echo    Inner loop    Outer=%%A Inner=%%B
 )

    • 使用该命令goto :Label并将其放在Label: 循环的末尾。由于已知的错误，这可能不适用于您的情况：在括号内使用 GOTO（包括 FOR 和 IF 命令）会破坏它。
      显示错误的示例：

      @Echo Off
if A equ A (
  IF B==C GOTO specialcase 
    Echo shouldn't go here
    goto:eof 
:specialcase
)

    参考 ：

    • 2

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