Is date comparison possible?
 

I was wondering if it is possible to compare dates in two variables in NSIS? I have searched the manual, the web and this forum with no luck.

If I have the date in two variables, for example:

; The date of the file time

${GetTime} "$WINDIR\Explorer.exe" "C" $0 $1 $2 $3 $4 $5 $6

; and the date now

!define /date NOW "%H:%M:%S %d %b, %Y"

Is is possible to compare these two to see if the date of file creation is within a certain number of days of the current date?

Wisdom in this matter will be much appreciated.

Kind Regards.

Rather than using !define /date NOW "%H:%M:%S %d %b, %Y", use
!define /date Day "%d"
!define /date Month "%m"
!define /date Year "%Y"
and then compare each value individually.

Stu

I understood this question to ask if the file date is within a certain number of days of the installation date, not the setup build date. The '!define /date' command will capture the date the setup program was created.

When I needed to see if a file was older than some desired amount (eg, a backup was not current), I created a temp file and compared the dates of the temp file and the backup file.

Don

If you want to get the time span between current (system) time and the time the installer was build, you can use the time plugin.

code:


  !define /utcdate BUILD_TIMESTAMP "%d.%m.%Y %H:%M:%S"



  # to get the installer age in days:



  time::_GetLocalTimeUTC

  Pop $0

  time::_MathTime "day($0) - day(${BUILD_TIMESTAMP}) = day"

  Pop $1

Thanks guys, I managed to get it done using the Time plug-in.