@echo off
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setlocal enableextensions enabledelayedexpansion
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for /f %%v in ('cd "%~dp0.." ^&^& git status ^>NUL 2^>NUL ^&^& git describe --tags --match "v*" --dirty 2^>NUL') do set version=%%v
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if not "%version%"=="" set version=!version:~1! && goto :gotversion
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if exist "%~dp0..\package_version" goto :getversion
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echo Git cannot be found, nor can package_version. Generating unknown version.
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set version=unknown
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goto :gotversion
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:getversion
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for /f "delims== tokens=2" %%v in (%~dps0..\package_version) do set version=%%v
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set version=!version:"=!
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:gotversion
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set version=!version: =!
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set version_out=#define %~2 "%version%"
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echo %version_out%> "%~1_temp"
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echo n | comp "%~1_temp" "%~1" > NUL 2> NUL
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if not errorlevel 1 goto exit
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copy /y "%~1_temp" "%~1"
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:exit
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del "%~1_temp"
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