My MySQL registry checker

As I didn't found a script on the nsis page to detect MySQL in the registry, I just wrote mine and decided to share it.
I'm new to NSIS coding so feel free to make a better code 😉

To use it :
Var $path_result
Var $version_result
!insertmacro CheckMySqlReg $path_result $version_result
DetailPrint "MySQL : located in $path_result with version $version_result"

!macro CheckMySqlReg _RESULT _RESULT2

    Push $0

    Push $1

    Push $2

    Push $R0

    StrCpy $0 0

    StrCpy ${_RESULT} ""

    StrCpy ${_RESULT2} ""

    loopSqlReg:

        ClearErrors

        EnumRegKey $1 HKLM "Software\MYSQL AB" $0

        StrCmp $1 "" doneSqlReg

        IntOp $0 $0 + 1

        StrCpy $2 $1 12

        StrCmp $2 "MySQL Server" foundSqlReg 0

        Goto loopSqlReg

    foundSqlReg:

        ReadRegStr $R0 HKLM "Software\MYSQL AB\$1" "Location"

        IfFileExists "$R0\bin\mysql.exe" 0 doneSqlReg

        StrCpy ${_RESULT} "$R0"

        ReadRegStr $R0 HKLM "Software\MYSQL AB\$1" "Version"

        StrCpy ${_RESULT2} "$R0"

    doneSqlReg:

    Pop $0

    Pop $1

    Pop $2

    Pop $R0

!macroend

It'd be better whenever you want to share NSIS code to post it at wiki. This makes it easier for others to find it.
A quick look on the code; if you really want to preserve the values of $0, $1, $2, $R0, you should turn upside down when you Pop, see here , also probably you do not need StrCpy ${_RESULT} "" and StrCpy ${_RESULT2} "", while declared variables $path_result and $version_result are already empty 🙂

thank you for the tip 🙂

I had a similar requirement where i needed to detect MSDE /MSSQL and run the uninstaller path.
I used registry.nsh plugin to locate the path ,
then using that path, locate and run a substring :
(extracted code)

!include "registry.nsh"



Function UninstallMSDE



### Get dynamic registry path by searching for MSDE (full name) and store path as $1

### Using $1 search for uninstall path - store as $R3

### Execute $R3 (msde uninstall path)



 ${registry::Open} "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" "/K=0 /V=0 /S=1 /B=1 /NS='Microsoft SQL Server Desktop Engine'" $0

	StrCmp $0 0 0 loop

	MessageBox MB_OK "Error getting MSDE registry entry use Add/Remove programs" IDOK close



	loop:

	${registry::Find} "$0" $1 $2 $3 $4



	${registry::Open} "HKLM\$1" "/K=0 /V=1 /S=0 /B=1 /NS='UninstallString'" $R6

	StrCmp $R6 0 0 loop2

	MessageBox MB_OK "Error getting MSDE Uninstall registry entry use Add/Remove programs" IDOK close



	loop2:

	${registry::Find} "$R6" $R1 $R2 $R3 $R4



ExecWait $R3

	close:

	${registry::Close} "$0"

	${registry::Unload}



FunctionEnd

It can probably be cleaned up a little - i really only modified the example scripts included in the plugin and cut it.

Unless RW and co see any major problems with the code i shall add it to WiKi later this week.

My opinion is this; contribution should be our duty, this is the way NSIS grows up and spreads all over.