如何跳过 FOR 循环中的一个循环？

Question

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

我还尝试了一种有条件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。

Answer 1

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在您决定可以跳过 for 主体的其余部分时放置到该标签。

因为 FOR 主体上的右括号前面必须有一个常规语句（标签不行），所以您必须在标签和右括号之间放置一个虚拟语句（如 REM）。

FOR xxxxxxxxx DO (
  some statements (executed on each iteration)
  IF {some condition is met} GOTO nextiteration
  statements that will be skipped if conditon is met
:nextiteration
  REM to prevent syntax error
)