ifFileExists - compile time

stonkers
6th May 2005 20:52 UTC

ifFileExists - compile time
Here's what I'm trying to do and am not sure if it's actually possible:

;compileTime
IfFileExists onLocalMachine
Do
;Runtime
Unregister dll
Copy dll from local to dest
Register dll
Done
Endif

In other words, I want to ignore a section of code if a certain file doesn't exist at compile time.

Thanks,
Eric

stonkers
6th May 2005 21:11 UTC

I think I know the answer to this. Tell me if I'm wrong:

IfFileExists is compile time
FindFirst is run time

If that's the case, I'm square. I'm going to code based on this assumption.

Thanks,
Eric

stonkers
6th May 2005 21:20 UTC

Looks to me like I'm wrong based on the documentation for DLL/TLB Library Setup. IfFileExists is looking on the destination machine.

Afrow UK
6th May 2005 21:42 UTC

Doing a forum search usually helps.

http://forums.winamp.com/showthread....s+compile+time

-Stu

stonkers
6th May 2005 22:44 UTC

I tried, but I guess you are better at searching this forum. So, I tried to do basically what they're doing and failed. Any help on what I'm doing wrong?

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;Backgound Colors
BGGradient 800080 000000 FFFFFF
BrandingText " "

Name "Test"

;Output File Name
OutFile "test.exe"

;The Default Installation Directory
InstallDir "D:\NoWhereLand"

Section "Install"

!system 'IF EXIST "D:\myFile.txt" ECHO !define MyVar'

!ifdef MyVar
MessageBox MB_OKCANCEL|MB_ICONEXCLAMATION \
"file exists $\n$\nClick `OK` to continue \
or `Cancel` to abort." \
IDOK +1

!endif

MessageBox MB_OKCANCEL|MB_ICONEXCLAMATION \
"finished $\n$\nClick `OK` to continue \
or `Cancel` to abort." \
IDOK +1

SectionEnd

Section "Shortcuts"
;Add Shortcuts
SectionEnd
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

Thanks,
Eric

stonkers
6th May 2005 22:52 UTC

Nevermind, I see what I missed:

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;Backgound Colors
BGGradient 800080 000000 FFFFFF
BrandingText " "

Name "Test"

;Output File Name
OutFile "test.exe"

;The Default Installation Directory
InstallDir "D:\NoWhereLand"

Section "Install"

!system 'IF EXIST "D:\myFile.txt" ECHO !define MyVar>"%TEMP%\Temp$$$.nsh"'
!include "$%TEMP%\Temp$$$.nsh"
!system 'DEL "%TEMP%\Temp$$$.nsh"'

!ifdef MyVar
MessageBox MB_OKCANCEL|MB_ICONEXCLAMATION \
"file exists $\n$\nClick `OK` to continue \
or `Cancel` to abort." \
IDOK +1

!endif

MessageBox MB_OKCANCEL|MB_ICONEXCLAMATION \
"finished $\n$\nClick `OK` to continue \
or `Cancel` to abort." \
IDOK +1

SectionEnd

Section "Shortcuts"
;Add Shortcuts
SectionEnd

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

Afrow UK
6th May 2005 22:52 UTC

You're missing about 80% of the code.


!system 'IF EXIST "C:\NsisBuilds\MaybeFileMaybeNot\file.txt" ECHO !insertmacro MUI_INSTALLOPTIONS_WRITE "Menu.ini" "Field 3" "Flags" "DISABLED">"%TEMP%\Temp$$$.nsh"'
!include "$%TEMP%\Temp$$$.nsh"
!system 'DEL "%TEMP%\Temp$$$.nsh"'

It's writing a define to a temp file and then !including that temp file (and then deleting it).
You're missing those 3 main parts.

Edit: You just updated your post when I posted :)

-Stu

stonkers
9th May 2005 20:17 UTC

Is there a way to modularize this? I tried, but it doesn't seem to work. Anyone see what I'm doing wrong?

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;Backgound Colors
BGGradient 800080 000000 FFFFFF
BrandingText " "

Name "Test"

;Output File Name
OutFile "test2.exe"

;The Default Installation Directory
InstallDir "D:\NoWhereLand"

Section "Install"

StrCpy $8 'D:\myFile.txt'
call checkFileExists

!ifdef MyVar
MessageBox MB_OKCANCEL|MB_ICONEXCLAMATION \
"D:\myFile.txt file exists $\n$\nClick `OK` to continue \
or `Cancel` to abort." \
IDOK +1
!endif
!ifndef MyVar
MessageBox MB_OKCANCEL|MB_ICONEXCLAMATION \
"myFile.txt file doesn't exist $\n$\nClick `OK` to continue \
or `Cancel` to abort." \
IDOK +1
!endif

StrCpy $8 'D:\noFile.txt'
call checkFileExists

!ifdef MyVar
MessageBox MB_OKCANCEL|MB_ICONEXCLAMATION \
"D:\noFile.txt file exists $\n$\nClick `OK` to continue \
or `Cancel` to abort." \
IDOK +1
!endif
!ifndef MyVar
MessageBox MB_OKCANCEL|MB_ICONEXCLAMATION \
"noFile.txt file doesn't exist $\n$\nClick `OK` to continue \
or `Cancel` to abort." \
IDOK +1
!endif

SectionEnd

Section "Shortcuts"
;Add Shortcuts
SectionEnd

Function checkFileExists

!ifdef MyVar
!undef MyVar
!endif

!system 'ECHO ;$8 FileCheck>"%TEMP%\Temp$$$.nsh"'
!system 'IF EXIST "$8" ECHO !define MyVar>"%TEMP%\Temp$$$.nsh"'
!include "$%TEMP%\Temp$$$.nsh"
!system 'DEL "%TEMP%\Temp$$$.nsh"'

FunctionEnd
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

Instructor
9th May 2005 22:52 UTC

All NSIS variables $0-$9 ... are run-time.

Name "Test"
OutFile "Test.exe"

Section "Install"
        !ifdef MyVar
        !undef MyVar
        !endif

        !system 'IF EXIST "D:\myFile.txt" IF EXIST "D:\noFile.txt" ECHO !define MyVar>>"%TEMP%\Temp$$$.nsh"'
        !include "$%TEMP%\Temp$$$.nsh"
        !system 'DEL "%TEMP%\Temp$$$.nsh"'

        !ifdef MyVar
        MessageBox MB_OK '"D:\myFile.txt" and "D:\noFile.txt" were exist at compile-time'
        !endif

        !ifndef MyVar
        MessageBox MB_OK '"D:\myFile.txt" and "D:\noFile.txt" were not exist at compile-time'
        !endif
SectionEnd