Where is SetFileTime?

PepiMK
24th September 2003 08:51 UTC

Where is SetFileTime?
I need to update the filetime of a file that is already installed (and will not be updated) during my installation.

Now I found GetFileTime in the NSIS documentation, but not one word on any SetFileTime :(

I could add that function to the source somehow most probably, but would like to hear first if there are any existing solutions for this? Thanks :)

kichik
24th September 2003 10:58 UTC

There is no built in command for that. If you want to change the modified time to the current time you can use this little script:

FileOpen $0 "C:\path\to\file" a
FileSeek $0 0 SET
FileReadByte $0 $1
FileSeek $0 0 SET
FileWriteByte $0 $1
FileClose $0

If you want to set it to another time you can use the System.dll plug-in and call SetFileTime directly.

PepiMK
24th September 2003 12:44 UTC

No, I need a specific date - that of the installer.

So I tried:

FileOpen $0 $EXEDIR\myinstaller.exe a
System::Call 'kernel32::GetFileTime(i, i, i, i) v (.r0, .r1, .r2, .r3)'
FileClose $0
FileOpen $0 $INSTDIR\mydatefile.zip a
System::Call 'kernel32::SetFileTime(i, *i, *i, *i) v (.r0, .r1, .r2, .r3)'
FileClose $0

Actually I would have to set a special date instead of the one from the installer, but if it doesn't even work this way, I'll have to look for some other way to go avoid this :(

kichik
24th September 2003 13:06 UTC

There are a few problems in that script:

The installers name can be changed. You should process $CMDLINE or use GetModuleFileName to get the installer's name.
GetFileTime requires pointers but you've passed on simple integers.
Both GetFileTime and SetFileTime require pointers to FILETIME structures which is not the same size as an integer.
The first parameter in both GetFileTime is for input not for output and therefore that dot before r0 is not supposed to be there.
SetFileTime requires input, not output so the same dot position applies from the last point applies here too.
Your installer is in use when running, you can't open it with append more, only read.

Here's a working script:

FileOpen $0 $EXEDIR\bla.exe r
System::Call 'kernel32::GetFileTime(i, *l, *l, *l) i (r0, .r1, .r2, .r3)'
FileClose $0
FileOpen $0 $EXEDIR\uninst.exe a
System::Call 'kernel32::SetFileTime(i, *l, *l, *l) i (r0, r1, r2, r3)'
FileClose $0

PepiMK
25th September 2003 12:54 UTC

Ok, I admit, I didn't fully understand System:Call (obviously) ;)

Thanks a lot for the working script!

TomWolle
22nd June 2008 14:03 UTC

Is it possible to do that during script compile time?

EDIT: nvm I found my answer