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51 lines
1.5 KiB
51 lines
1.5 KiB
@IF NOT DEFINED DEBUG_HELPER @ECHO OFF
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SETLOCAL
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:: If python.exe is in %Path%, just validate
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FOR /F "delims=" %%a IN ('where python 2^> NUL') DO (
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SET need_path=0
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SET p=%%~dpa
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IF NOT ERRORLEVEL 1 GOTO :validate
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)
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:: Query the 3 locations mentioned in PEP 514 for a python2 InstallPath
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FOR %%K IN ( "HKCU\Software", "HKLM\SOFTWARE", "HKLM\Software\Wow6432Node") DO (
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SET need_path=1
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CALL :find-main-branch %%K
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:: If validate returns 0 just jump to the end
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IF NOT ERRORLEVEL 1 GOTO :validate
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)
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EXIT /B 1
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:: Helper subroutine to handle quotes in %1
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:find-main-branch
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SET main_key="%~1\Python\PythonCore"
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REG QUERY %main_key% /s | findstr "2." | findstr InstallPath > NUL 2> NUL
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IF NOT ERRORLEVEL 1 CALL :find-key %main_key%
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EXIT /B
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:: Query registry sub-tree for InstallPath
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:find-key
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FOR /F "delims=" %%a IN ('REG QUERY %1 /s ^| findstr "2." ^| findstr InstallPath') DO IF NOT ERRORLEVEL 1 CALL :find-path %%a
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EXIT /B
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:: Parse the value of %1 as the path for python.exe
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:find-path
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FOR /F "tokens=3*" %%a IN ('REG QUERY %1 /ve') DO (
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SET pt=%%a
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IF NOT ERRORLEVEL 1 SET p=%pt%
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EXIT /B 0
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)
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EXIT /B 1
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:: Check if %p% holds a path to a real python2 executable
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:validate
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IF NOT EXIST "%p%python.exe" EXIT /B 1
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:: Check if %p% is python2
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"%p%python.exe" -V 2>&1 | findstr /R "^Python.2.*" > NUL
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IF ERRORLEVEL 1 EXIT /B %ERRORLEVEL%
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:: We can wrap it up
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ENDLOCAL & SET pt=%p%& SET need_path_ext=%need_path%
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SET VCBUILD_PYTHON_LOCATION=%pt%python.exe
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IF %need_path_ext%==1 SET Path=%Path%;%pt%
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SET need_path_ext=
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EXIT /B %ERRORLEVEL%
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