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76 lines
3.1 KiB
76 lines
3.1 KiB
@rem
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@rem Searches for python.exe and may download a private copy from nuget.
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@rem
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@rem This file is supposed to modify the state of the caller (specifically
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@rem the MSBUILD variable), so we do not use setlocal or echo, and avoid
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@rem changing any other persistent state.
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@rem
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@rem No arguments provided means do full search
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@if '%1' EQU '' goto :begin_search
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@rem One argument may be the full path. Use a goto so we don't try to
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@rem parse the next if statement - incorrect quoting in the multi-arg
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@rem case can cause us to break immediately.
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@if '%2' EQU '' goto :one_arg
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@rem Entire command line may represent the full path if quoting failed.
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@if exist "%*" (set PYTHON="%*") & (set _Py_Python_Source=from environment) & goto :found
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@goto :begin_search
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:one_arg
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@if exist "%~1" (set PYTHON="%~1") & (set _Py_Python_Source=from environment) & goto :found
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:begin_search
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@set PYTHON=
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@set _Py_EXTERNALS_DIR=%EXTERNAL_DIR%
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@if "%_Py_EXTERNALS_DIR%"=="" (set _Py_EXTERNALS_DIR=%~dp0\..\externals)
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@rem If we have Python in externals, use that one
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@if exist "%_Py_EXTERNALS_DIR%\pythonx86\tools\python.exe" (set PYTHON="%_Py_EXTERNALS_DIR%\pythonx86\tools\python.exe") & (set _Py_Python_Source=found in externals directory) & goto :found
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@rem If HOST_PYTHON is recent enough, use that
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@if NOT "%HOST_PYTHON%"=="" @%HOST_PYTHON% -c "import sys; assert sys.version_info[:2] >= (3, 6)" >nul 2>nul && (set PYTHON="%HOST_PYTHON%") && (set _Py_Python_Source=found as HOST_PYTHON) && goto :found
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@rem If py.exe finds a recent enough version, use that one
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@py -3.6 -V >nul 2>&1 && (set PYTHON=py -3.6) && (set _Py_Python_Source=found with py.exe) && goto :found
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@if NOT exist "%_Py_EXTERNALS_DIR%" mkdir "%_Py_EXTERNALS_DIR%"
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@set _Py_NUGET=%NUGET%
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@set _Py_NUGET_URL=%NUGET_URL%
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@set _Py_HOST_PYTHON=%HOST_PYTHON%
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@if "%_Py_HOST_PYTHON%"=="" set _Py_HOST_PYTHON=py
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@if "%_Py_NUGET%"=="" (set _Py_NUGET=%_Py_EXTERNALS_DIR%\nuget.exe)
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@if "%_Py_NUGET_URL%"=="" (set _Py_NUGET_URL=https://aka.ms/nugetclidl)
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@if NOT exist "%_Py_NUGET%" (
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@echo Downloading nuget...
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@rem NB: Must use single quotes around NUGET here, NOT double!
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@rem Otherwise, a space in the path would break things
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@rem If it fails, retry with any available copy of Python
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@powershell.exe -Command Invoke-WebRequest %_Py_NUGET_URL% -OutFile '%_Py_NUGET%'
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@if errorlevel 1 (
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@%_Py_HOST_PYTHON% "%~dp0\urlretrieve.py" "%_Py_NUGET_URL%" "%_Py_NUGET%"
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)
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)
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@echo Installing Python via nuget...
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@"%_Py_NUGET%" install pythonx86 -ExcludeVersion -OutputDirectory "%_Py_EXTERNALS_DIR%"
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@rem Quote it here; it's not quoted later because "py -3.6" wouldn't work
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@if not errorlevel 1 (set PYTHON="%_Py_EXTERNALS_DIR%\pythonx86\tools\python.exe") & (set _Py_Python_Source=found on nuget.org) & goto :found
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@set _Py_Python_Source=
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@set _Py_EXTERNALS_DIR=
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@set _Py_NUGET=
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@set _Py_NUGET_URL=
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@set _Py_HOST_PYTHON=
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@exit /b 1
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:found
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@echo Using %PYTHON% (%_Py_Python_Source%)
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@set _Py_Python_Source=
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@set _Py_EXTERNALS_DIR=
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@set _Py_NUGET=
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@set _Py_NUGET_URL=
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@set _Py_HOST_PYTHON=
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