| :: Check if a registry key and, optionally, an attribute is available in the registry. |
| :: Return 0 if the key/attribute is installed, 2 otherwise. |
| :: Usage |
| :: isInstalled.bat key [attributeName attributeValue] |
| |
| @echo off |
| SetLocal EnableExtensions |
| |
| Set key=%1 |
| |
| :: if no attribute name is supplied, only check the key |
| If "%2"=="" Goto check_key |
| |
| |
| |
| :check_attribute |
| Set attribute=%2 |
| Set value=%3 |
| |
| :: query registry and get the second and third token, which is the type and the value |
| For /F "usebackq tokens=2,3" %%A In (`reg query "%key%" /v "%attribute%" 2^>nul ^| find "%attribute%"`) Do ( |
| Set type=%%A |
| Set value_actual=%%B |
| ) |
| |
| If "REG_DWORD"=="%type%" ( |
| :: convert hex to int value |
| Set /A value_actual=%value_actual% |
| ) |
| |
| If Not %value_actual% Equ %value% exit /B 2 |
| exit /B 0 |
| |
| |
| |
| :check_key |
| reg query "%key%" >nul 2>nul |
| If Errorlevel 1 exit /B 2 |
| |
| exit /B 0 |
