SETLOCAL ENABLEEXTENSIONS

:v64_path_a2
For /F "Tokens=2* skip=2" %%A In ('REG QUERY "HKLM\SOFTWARE\Wow6432Node\Bohemia Interactive Studio\ArmA 2" /v "MAIN"') Do (set _ARMA2PATH=%%B)

IF NOT DEFINED _ARMA2PATH (GOTO v32_path_a2) ELSE (GOTO v64_path_a2oa)

:v32_path_a2
For /F "Tokens=2* skip=2" %%C In ('REG QUERY "HKLM\SOFTWARE\Bohemia Interactive Studio\ArmA 2" /v "MAIN"') Do (set _ARMA2PATH=%%D)

IF NOT DEFINED _ARMA2PATH (GOTO uac_PATH_A2) ELSE (GOTO v64_path_a2oa)

:uac_PATH_A2
FOR /F "tokens=2* delims=    " %%I IN ('REG QUERY "HKLM\SOFTWARE\Wow6432Node\Bohemia Interactive Studio\ArmA 2" /v "MAIN"') DO (SET _ARMA2PATH=%%J)

IF NOT DEFINED _ARMA2PATH (GOTO std_PATH_A2) ELSE (GOTO v64_path_a2oa)

:std_PATH_A2
FOR /F "tokens=2* delims=    " %%K IN ('REG QUERY "HKLM\SOFTWARE\Bohemia Interactive Studio\ArmA 2" /v "MAIN"') DO (SET _ARMA2PATH=%%L)

IF NOT DEFINED _ARMA2PATH (GOTO ENDfailA2) ELSE (GOTO v64_path_a2oa)

:v64_path_a2oa
For /F "Tokens=2* skip=2" %%E In ('REG QUERY "HKLM\SOFTWARE\Wow6432Node\Bohemia Interactive Studio\ArmA 2 OA" /v "MAIN"') Do (set _ARMA2OAPATH=%%F)

IF NOT DEFINED _ARMA2OAPATH (GOTO v32_path_a2oa) ELSE (GOTO RUN)

:v32_path_a2oa
For /F "Tokens=2* skip=2" %%G In ('REG QUERY "HKLM\SOFTWARE\Bohemia Interactive Studio\ArmA 2 OA" /v "MAIN"') Do set (_ARMA2OAPATH=%%H)

IF NOT DEFINED _ARMA2OAPATH (GOTO uac_PATH_A2OA) ELSE (GOTO RUN)

:uac_PATH_A2OA
FOR /F "tokens=2* delims=    " %%M IN ('REG QUERY "HKLM\SOFTWARE\Wow6432Node\Bohemia Interactive Studio\ArmA 2 OA" /v "MAIN"') DO (SET _ARMA2OAPATH=%%N)

IF NOT DEFINED _ARMA2OAPATH (GOTO std_PATH_A2OA) ELSE (GOTO RUN)

:std_PATH_A2OA
FOR /F "tokens=2* delims=    " %%O IN ('REG QUERY "HKLM\SOFTWARE\Bohemia Interactive Studio\ArmA 2 OA" /v "MAIN"') DO (SET _ARMA2OAPATH=%%P)

IF NOT DEFINED _ARMA2OAPATH (GOTO ENDfailA2OA) ELSE (GOTO RUN)

:run
:v64_path_steam
For /F "Tokens=2* skip=2" %%Q In ('REG QUERY "HKLM\SOFTWARE\Wow6432Node\Valve\Steam" /v "InstallPath"') Do (set _STEAMPATH=%%R)

IF NOT DEFINED _STEAMPATH (GOTO v32_path_steam) ELSE (GOTO runs)

:v32_path_steam
For /F "Tokens=2* skip=2" %%S In ('REG QUERY "HKLM\SOFTWARE\Valve\Steam" /v "InstallPath"') Do (set _STEAMPATH=%%T)

IF NOT DEFINED _STEAMPATH (GOTO uac_path_steam) ELSE (GOTO runs)

:uac_path_steam
FOR /F "tokens=2* delims=    " %%U IN ('REG QUERY "HKLM\SOFTWARE\Wow6432Node\Valve\Steam" /v "InstallPath"') DO (SET _STEAMPATH=%%V)

IF NOT DEFINED _STEAMPATH (GOTO std_path_steam) ELSE (GOTO runs)

:std_path_steam
FOR /F "tokens=2* delims=    " %%W IN ('REG QUERY "HKLM\SOFTWARE\Valve\Steam" /v "InstallPath"') DO (SET _STEAMPATH=%%X)

IF NOT DEFINED _STEAMPATH (GOTO ENDfailSteam) ELSE (GOTO runs)

:runs
"%_STEAMPATH%\steam.exe" -applaunch 33930 "-mod=%_ARMA2PATH%;EXPANSION;ca;@dayz"

ENDLOCAL

:end
exit /B 0

:ENDfailA2
exit /B 1

:ENDfailA2OA
exit /B 2

:ENDfailSteam
exit /B 3