延迟内部变量的扩展

时间:2019-09-26 14:18:29

标签: batch-file

我正在尝试在for中扩展一些变量。我不知道该怎么解释,但我认为代码可以很好地说明我想做什么。

@ECHO OFF
SETLOCAL ENABLEDELAYEDEXPANSION

SET arr[0]=C:\Users\me\Desktop\abc
SET arr[1]=C:\Users\me\Desktop\abc2
SET /A arrLastElement=1

CALL :subroutine %arrLastElement% arr
EXIT /B 0

:subroutine
    SET lineToExecute=FORFILES /m "*.*" /c "cmd /c echo !dir!"

    FOR /L %%i in (0, 1, %1) DO (
        SET dir=!%2[%%i]!
        ECHO !dir!
        ECHO !lineToExecute!
    )

    EXIT /B 0

实际结果:

C:\Users\me\Desktop\abc
FORFILES /m "*.*" /c "cmd /c echo "
C:\Users\me\Desktop\abc2
FORFILES /m "*.*" /c "cmd /c echo "

预期结果:

C:\Users\me\Desktop\abc
FORFILES /m "*.*" /c "cmd /c echo C:\Users\me\Desktop\abc"
C:\Users\me\Desktop\abc2
FORFILES /m "*.*" /c "cmd /c echo C:\Users\me\Desktop\abc2"

我应该如何编写此代码?

1 个答案:

答案 0 :(得分:1)

您正在寻找嵌套延迟扩展。有几种方法可以实现它。我认为最简单的就是这个:

@ECHO OFF
SETLOCAL ENABLEDELAYEDEXPANSION

SET arr[0]=C:\Users\me\Desktop\abc
SET arr[1]=C:\Users\me\Desktop\abc2
SET /A arrLastElement=1

CALL :subroutine %arrLastElement% arr
EXIT /B 0

:subroutine
    SET lineToExecute=FORFILES /m "*.*" /c "cmd /c echo %%dir%%"

    FOR /L %%i in (0, 1, %1) DO (
        SET dir=!%2[%%i]!
        ECHO !dir!
        call ECHO !lineToExecute!
    )

    EXIT /B 0