批处理文件：如何检查 %~dp0 是否是 UNC 网络路径？

Question

我已经看到 How to run batch file from network share without "UNC path are not supported" message? - pushd %~dp0 将网络路径安装为驱动器，popd 卸载驱动器，似乎对我有用。

我只想让批处理脚本能够检测脚本的启动位置是本地路径还是 network/UNC 路径。我怎么能那样做？我猜，可以检查路径中的前两个字符是否是反斜杠 \，但我不知道如何批量进行。

所以，作为某种伪代码，我需要这样的东西：

call :IsUncPath %~dp0 is_unc_path

if %is_unc_path% == 1 (
  echo "Mounting UNC path as local drive"
  REM @pushd %~dp0
)

echo "Script does whatever here..."

if %is_unc_path% == 1 (
  echo "Unmounting local drive for UNC path"
  REM @popd
)

pause
:: "force execution to quit at the end of the "main" logic" http://steve-jansen.github.io/guides/windows-batch-scripting/part-7-functions.html
EXIT /B %ERRORLEVEL%

:IsUncPath
echo The value of parameter 1 is %~1
:: NB: there must not be spaces around the assignment!
set "%~2=1"
EXIT /B 0

Answer 1

您可以使用 net use <drive letter> 的错误级别。

call :isUncPath C:
if %errorlevel% == 0 echo C: is on UNC
exit /b

:IsUncPath
::: param1 - drive letter with colon, ex Y:
::: @return exitcode 0 - drive is network mapped
net use %~1 >nul 2>&1
EXIT /B %errorlevel%

Answer 2

你也可以使用这个：

@echo off
call :chkunc
if %errorlevel% equ 0 echo "%~dp0" is on UNC 
:: rest of your script
exit /b
:chkunc
set "testpath=%~dp0"
if "%testpath:~0,2%"=="\" exit /b 0
exit /b 1

批处理文件：如何检查 %~dp0 是否是 UNC 网络路径？

batch file: how to check if %~dp0 is a UNC network path?

unc

batch-file