Rscript.exe的文件路径中的＆符

Question

I am trying to run an R script through a batch file that I have written. I want the batch script to be flexible so that I can move it to other computers or have it run off of the network drive and it will work in all cases. What I do is collect the path of the file where the batch file is opened from, and then use that path to activate the R script.

It works fine when I have a file path with no special characters, but I have run into a problem with special characters.

Here is the code:

@ECHO OFF
setlocal EnableDelayedExpansion
set "_SCRIPT_DRIVE=%~d0"
set "_SCRIPT_PATH=%~p0"
set "PATH=!_SCRIPT_DRIVE!!_SCRIPT_PATH!"

This seems to work as desired, as when I do

ECHO !PATH!

I get my desired output of

C:\\A&B\File

However, when I later go on to run this through Rscript.exe command, it doesn't recognize the delayed expansion and executes the ampersand as a special character. The input of:

"!PATH!\R-3.0.1\bin\Rscript.exe" "!PATH!Scripts\Test.R"

Returns:

'C:\\A' is not recognized as an internal or external command, operable program or batch file.

I only have this problem, though, when I try and run Rscript.exe. I am perfectly capable of opening a file such as

"!PATH!Scripts\Test.R"

And it executes without any problems. Has anyone else run into this problem before? Does anyone see any problems with my syntax?

EDIT: SOLVED

For anyone who stumbles upon this post in the future, I managed to find a solution to this problem. It turns out that it wasn't a batch script error at all but rather a problem with Rscript.exe, I'm not sure what was going on. Instead of using the Rscript.exe located directly in \\bin , you must go one step further and use "!PATH!\\R-3.0.1\\bin\\i386\\Rscript.exe" which works, most likely because I am running on a 32 bit machine rather than a 64.

Answer 1

With batch files, you can get this to work usually by escaping the & with a ^ . I do not have a windows machine, but can you first check manually if this works, and if so, I can work with you if necessary to implement a function that does string escaping.

For the substitution one of the two below shoule work ( forgive me as I have not Windows machine ),

set workable_filename=%file_name:^&=^^&%
set workable_filename=%file_name:&=^&%
@REM:: I cannot test, but one of these should work