Create custom ${IF}... Test

[xbarns]

Hi all,

i hope my headline is somewhere in the vincinity of being correct of what i will describe now, if not i hope you can still help me

I want to create my own "string" that i can use with the ${IF}..${ENDIF} clause. For example with logiclib you can use

code:


${IF} ${silent}

  #do stuff

${ENDIF}

i want to create my own ${silent}, in my case it should be:

code:


${IF} $InstallPartOfApplication = 1 

  #do stuff

${ENDIF}

so "$InstallPartOfApplication = 1" should become ${InstallPartOfApplication)

code:


${IF} ${InstallPartOfApplication)

  #do stuff

${ENDIF}

now if $InstallPartOfApplication = 1 or not would be defined from a license file that is read during the beginning of the installation.

I hope (lots of hoping in this one) i could post my question understandable, and somebody can help me.

Btw. i looked at examples in the x64.nsh, which frankly i do not understand also looking at the silent part of logiclib.nsh did not bring me any step ahead i still wonder how _silent can be referenced from the !define below it....


!macro _Silent _a _b _t _f
IfSilent `${_t}` `${_f}`
!macroend
!define Silent `"" Silent ""`

Thanks a lot.
x

[xbarns]

As oh so many times, i might have come up with my own solution.

Please advise if that would be a good way to do what i want

code:




${IF} "LicensefilecontainsfeatureX"

  !define InstallFeatureX `1 = 1`

${ELSE}

    !define InstallFeatureX `1 = 0`

${ENDIF}



${IF} ${InstallFeatureX}

 #do stuff

${ENDIF}

Thanks
x

[Afrow UK]

That is not valid semantics. The code will not compile (have you even tried it?) You want:

code:
!define InstallPartOfApplication `$InstallPartOfApplication = 1`

Stu

[xbarns]

The code does compile, i have tried it

I will use your example anyway, it makes more sense

Thanks.

[Afrow UK]

Originally Posted by xbarns

The code does compile, i have tried it

Just for clarity, the exact code you posted, i.e.

code:


${IF} "LicensefilecontainsfeatureX"

  !define InstallFeatureX `1 = 1`

${ELSE}

  !define InstallFeatureX `1 = 0`

${ENDIF}

will definitely not compile.

Stu

[xbarns]

Oh (of course ) you are right, this was a try of showing what i want to accomplish. With the "it compiles" i was referring to the 1 = 1 part.

Thanks for your help

[Anders]

Just creating a define is ok for this sort of thing, but you if require more logic you need a macro, those last two macro parameters are the jump labels for true/false...