Extracting certain files only?

long1000 · 28th July 2003, 02:00

Hello,

How can i extract certain files only during updates
such that the setup program should only update the file
that is currently in the directory?

I'm trying something like this

IfFileExists "album.dll" 0 bypassAlbum
File album.dll
bypassAlbum:

Is this correct or is there some other function that
can do the job? And I have to do this for a lot of files,
so is there a simpler way to go about it?

Thanks

Cheers
long1000

Vytautas · 28th July 2003, 02:40

Use the "SetOverwrite off" command to preserve files already present on the target computer. You could also use "SetOverwrite ifnewer" to overwrite files only if they are newer than the ones on the target computer.

Vytautas

BlueTrin · 28th July 2003, 02:43

Last modified attribute of each file is kept in the installer :?

Vytautas · 28th July 2003, 02:48

I believe it would use the system properties of the file on the target system and compare it with the files in the installer. Although a member of NSIS Dev Team would know for sure.

Vytautas

long1000 · 29th July 2003, 11:29

Sorry i think i should rephrase my questions.

I only want to update the file if the same file exist.
This means if the file does not exist on the harddisk in the
first place, i don't want to extract the file from the
installer.

Thanks.

Vytautas · 29th July 2003, 12:33

Yes in that case your code is the way to go.

Vytautas

28th July 2003, 02:00	#1
long1000 Junior Member Join Date: Jul 2003 Location: Right under the sun Posts: 2	Extracting certain files only? Hello, How can i extract certain files only during updates such that the setup program should only update the file that is currently in the directory? I'm trying something like this IfFileExists "album.dll" 0 bypassAlbum File album.dll bypassAlbum: Is this correct or is there some other function that can do the job? And I have to do this for a lot of files, so is there a simpler way to go about it? Thanks Cheers long1000

28th July 2003, 02:40	#2
Vytautas Major Dude Join Date: May 2003 Location: Victoria, Australia Posts: 643	Use the "SetOverwrite off" command to preserve files already present on the target computer. You could also use "SetOverwrite ifnewer" to overwrite files only if they are newer than the ones on the target computer. Vytautas My NSIS Mods and Files

28th July 2003, 02:48	#4
Vytautas Major Dude Join Date: May 2003 Location: Victoria, Australia Posts: 643	I believe it would use the system properties of the file on the target system and compare it with the files in the installer. Although a member of NSIS Dev Team would know for sure. Vytautas My NSIS Mods and Files

29th July 2003, 12:33	#6
Vytautas Major Dude Join Date: May 2003 Location: Victoria, Australia Posts: 643	Yes in that case your code is the way to go. Vytautas My NSIS Mods and Files

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28th July 2003, 02:43	#3
BlueTrin Junior Member Join Date: Jul 2003 Posts: 6	Last modified attribute of each file is kept in the installer :?

29th July 2003, 11:29	#5
long1000 Junior Member Join Date: Jul 2003 Location: Right under the sun Posts: 2	Sorry i think i should rephrase my questions. I only want to update the file if the same file exist. This means if the file does not exist on the harddisk in the first place, i don't want to extract the file from the installer. Thanks.