xbarns
4th January 2012 16:25 UTC

Create custom ${IF}... Test
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

${IF} ${silent}
  #do stuff
${ENDIF}

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

${IF} $InstallPartOfApplication = 1 
  #do stuff
${ENDIF}

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

${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
4th January 2012 16:45 UTC

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

${IF} "LicensefilecontainsfeatureX"
  !define InstallFeatureX `1 = 1`
${ELSE}
    !define InstallFeatureX `1 = 0`
${ENDIF}

${IF} ${InstallFeatureX}
 #do stuff
${ENDIF}

Thanks
x

Afrow UK
4th January 2012 17:21 UTC

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

!define InstallPartOfApplication `$InstallPartOfApplication = 1`

Stu

xbarns
5th January 2012 08:07 UTC

The code does compile, i have tried it :)

I will use your example anyway, it makes more sense :)

Thanks.

Afrow UK
5th January 2012 11:40 UTC

Originally posted by xbarns
The code does compile, i have tried it :)

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

${IF} "LicensefilecontainsfeatureX"
  !define InstallFeatureX `1 = 1`
${ELSE}
  !define InstallFeatureX `1 = 0`
${ENDIF}

will definitely not compile.

Stu

xbarns
5th January 2012 13:42 UTC

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
5th January 2012 20:17 UTC

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...