Mirek Flesko
14th April 2004 11:25 UTC

Need to set overwrite mode of some files on the fly?
Hello, I need to set overwrite mode of some files on the fly, I thought it can be possible by setting SetOverwrite command but it seems it can't be altered by evaluating some variable in a section...

I inserted special page that allows user to choose between
1)overwriting all files
2) overwriting files only if they are newer

Then I checked the selection and wnat to apply the overwrite mode but it didn't work... Any idea? :)

I used this code:

Section "Program files (required)"

StrCmp $CX_DATA_OVER_MODE "0" _yes_overwrite _no_overwrite

_yes_overwrite:
DetailPrint "SetOverwrite on."
SetOverwrite on ;the script runs here but SetOverwrite does not work of course ...
Goto _done_overwrite

_no_overwrite:
DetailPrint "SetOverwrite ifnewer."
SetOverwrite ifnewer ;the script runs here but SetOverwrite does not work of course ...

Goto _done_overwrite
_done_overwrite:

SetOutPath $CX_DATA_DIR
File Redistribute\*.*
...
...

evilO
14th April 2004 14:08 UTC

Hi :)

To solve your problem I think you have to remove the instructions "SetOutPath" and "File" from the label "_done_overwrite", and to put them both in "_yes_overwrite" and "_no_overwrite" :


Section "Program files (required)"
StrCmp "$CX_DATA_OVER_MODE" "0" _yes_overwrite _no_overwrite

_yes_overwrite:
DetailPrint "SetOverwrite on."
SetOverwrite on
SetOutPath "$CX_DATA_DIR"
File Redistribute\*.*
Goto _done_overwrite

_no_overwrite:
DetailPrint "SetOverwrite ifnewer."
SetOverwrite ifnewer
SetOutPath "$CX_DATA_DIR"
File Redistribute\*.*
Goto _done_overwrite

_done_overwrite:
SectionEnd


This should work, let me know if it doesn't... :D

evilO/Olive

PS: and welcome to the forums... ;)

Mirek Flesko
14th April 2004 14:55 UTC

It works
It works, thanks :) However, I have to duplicate the "File" code several times since I have to use that in several sections ...

Joost Verburg
14th April 2004 15:15 UTC

If the datablock optimizer is on (which is the default) that should be no problem. You also use a function or call a section from the script.

evilO
14th April 2004 15:18 UTC

It works, cool :)

Err, but I'm not too sure to understand that:

However, I have to duplicate the "File" code several times since I have to use that in several sections

Mirek Flesko
14th April 2004 15:22 UTC

[QUOTEThe "File" instruction will not put your files twice in the installer if that is the problem...
[/QUOTE]

I just tried to mention that I had to duplicate all the "file related" lines in the installer so there is increased possibility of errors - I change something in the future I will have to modify it on two places in the script...

Anyway, thanks :)

Joost Verburg
14th April 2004 15:31 UTC

Why not put it all in a macro? Then you won't have to enter it twice and you can even let the macro call the same File command for every file extraction (see the UpgradeDLL macro).

Mirek Flesko
14th April 2004 15:34 UTC

Macro :eek: Well - I haven't used macros in NSIS yet, but it seems worth to try :) Thanks - I'll do that.