mcmillhj
1st June 2011 16:14 UTC

String merge question?
Hi everyone, I am trying to sort of merge two strings together in NSIS. I have two strings 2.1.3.0 and 0.0.0.27269 and the string I want to create from them is 2.1.3.27269

My attempts thus far haven't worked, here is what I tried:

;;$VERSION      is defined with 2.1.3.0
;;$FILEVERSION2 is defined with 0.0.0.27269

;;debug
DetailPrint ${VERSION}
DetailPrint ${FILEVERSION}

;;attempt, also it doesn't say what the variables $R0-$R2 are after values 
;;copied into them, is that normal?
StrCpy $R0 ${FILEVERSION2} 5 -5
StrCpy $R1 ${VERSION} -2 
StrCpy $R2 $R1"."$R0 

DetailPrint $R2 ;;this doesn't print a value, only prints "$R2"
!define FILEVERSION3 $R2

Any help would be great. Hunter

PS - Also posted on SO: http://stackoverflow.com/questions/6...of-two-strings

MSG
1st June 2011 17:47 UTC

You can use the macros in wordfunc.nsh to cut the strings up into sections. Then you can IntCmp the substrings. Then just concat the results.

But... if the values are defined, you already know the numbers at compiletime. Why don't you just mix them yourself?

mcmillhj
1st June 2011 18:03 UTC

How would I mix them myself? I am not really familiar with nsis, I am only working on this to help someone else out.

Hunter

Afrow UK
1st June 2011 19:20 UTC

MSG is right you should not chop up the strings at run-time if they are constants (!define). Instead you can pass the constants to a command-line executable at compile-time via !system or !execute which does the split/join and writes that as a new !define to a .nsh file which you then !include.

Stu