如何通过文件本身更改BATCH文件中的变量值? [英] How to change variable value within BATCH file by the file itself?

问题描述

我一直在寻找答案，我从 http://www.dostips.com/DtTutoPersistency.php 和 http://ss64.com/nt/for_cmd .html 网站，但仍然无法解决我在以下方面遇到的问题: 我有一个BATCH文件，可以在其中测试特定文件夹(SendTo文件夹)的存在.如果我无法通过脚本找到它-我希望用户输入该文件夹的路径-并将结果保存在BATCH文件中.

I was looking for a long time now for an answer to this, learned nice tricks from http://www.dostips.com/DtTutoPersistency.php and http://ss64.com/nt/for_cmd.html sites, but still - don't have a solution to the problem I've encountered in: I have a BATCH file where I test the existence of specific folder (SendTo folder). In case I couldn't find it by the script - I want the user to enter the path to that folder - and keep the result in the BATCH file.

我缩小的BATCH文件("Some file.bat")看起来像:

My narrowed BATCH file ("Some file.bat") looks something like:

@echo off

REM SomeNonsense

:: Win7/Vista
IF EXIST %APPDATA%\Microsoft\Windows\SendTo\NUL (
 REM Do something
 GOTO :EOF
)

:: WinXP
IF EXIST %USERPROFILE%\SendTo\NUL (
 REM Do something
 GOTO :EOF
)

:: Else
SET SendPath=
SET /P SendP="Please enter the path to the SendTo Folder:> "
IF EXIST %TMP%\SendPath.txt DEL %TMP%\SendPath.txt
FOR /F "usebackq TOKENS=* DELIMS=" %%A in ("%~0") DO (
 ECHO %%A>>%TMP%\SendPath.txt
 REM Later I want to change the value of SendPath with SendP,
 REM And swap the file back to the original name
)

我现在的问题是，当我只想将文本本身复制到一个临时文件(不使用COPY，因为我想一行一行地复制以便更改SendPath值)时，实际上正在解释文件的行).

My problem right now is that the lines of the file actually being interpreted, when I want only to copy the text itself to a temp file (without using COPY, because I want to copy line by line in order to change SendPath value).

另一件事是不会复制空行.

Another thing is that empty lines aren't copied.

有解决方案吗?

推荐答案

这是您想要做的:

@echo off

rem Your previous Win7/Vista, WinXP testings here...

:: Else
call :defineSendPath

if defined SendPath goto continue

SET /P "SendPath=Please enter the path to the SendTo Folder:> "
rem Store the SendPath given into this Batch file:
echo set "SendPath=%SendPath%" >> "%~F0"

:continue

rem Place the rest of the Batch file here...


goto :EOF

rem Be sure that the following line is the last one in this file

:defineSendPath

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