Batch parse each parameter

问题

I am trying to create a batch script which would perform the same action for each parameter given. For example, giving X files as parameters:
script.bat "file1.txt" "file2.txt" "file3.txt" "file4.txt" ... "fileX.txt"
will rename them to:
"file1.bin" "file2.bin" "file3.bin" "file4.bin" ... "fileX.bin"
Rename is just an example, I will need it for more complex operations too.
I guess it should be something like for each but I'm new in batch scripts.

I just wonder if I could just increment %1 index...

回答1:

You can use SHIFT to shift the parameters left. In other words calling shift will put the second parameter to %1, the third to %2 etc.

So you need something like:

@ECHO OFF
:Loop
IF "%1"=="" GOTO Continue
   ECHO %1
SHIFT
GOTO Loop
:Continue

This will just print the arguments in order, but you can do whatever you want inside the loop.

回答2:

You can do something like this and just add the complexity you want:

for %%x in (%*) do (
  echo %%x
)

回答3:

What I ended up with was the following. I tend to over do things, thought I would share...

At the top of my batch file I have the following code...

Usage:

::--------------------------------------------------------
:: Handle parameters
::--------------------------------------------------------
CALL:ChkSwitch bOverwrite "/OVERWRITE" %*
CALL:ChkSwitch bMerge "/MERGED" %*

Then at the bottom (where I usually place all my functions)...

Function:

::--------------------------------------------------------
:: ChkSwitch Function
::--------------------------------------------------------

:ChkSwitch <bRet> <sSwitch> <sParams> (
    SETLOCAL EnableDelayedExpansion
    SET "switched=0"

    :ChkSwitchLoop
    IF "%~3"=="" GOTO ChkSwitchDone

    IF %~3==%~2 (
        SET "switched=1"
        GOTO ChkSwitchDone
    )

    SHIFT /3
    GOTO ChkSwitchLoop

    :ChkSwitchDone
)
( 
    ENDLOCAL
    SET "%~1=%switched%"
    EXIT /B
)

To use this its simple. You just call the function passing in a variable you wish to change OR create than next pass the switch you are looking for and last pass all the params from the script.

来源：https://stackoverflow.com/questions/9457355/batch-parse-each-parameter

标签

parameters

batch-file

foreach