#561 Compile time way to create constant for file size

[Greg Smith]

I have an extra file to include with the setup.exe for a project that cannot be added to the build, but needs to be included for size information. Currently I must make an estimate of the size and set it as a constant (and remember to modify it whenever it changes). However, would it be possible to create a !define constant that is the size of a nominated file?

I guess there are other items in the compile time environment that would be useful to grab as constants.

[Anders]

Use !system to execute a FOR or DIR|FIND command and redirect the output to a .nsh file you can include.

[Greg Smith]

On 18/12/2021 18:22, Anders wrote:

Use |!system| to execute a FOR or DIR|FIND command and redirect the
output to a .nsh file you can include.

---

Thank you for taking the time to reply.

Yes, I had thought of that, but it is such an ugly solution. I
appreciate that you want to keep everything small, but this must be
quite a common need...

Anyhow, many thanks for the great tool.

[Anders]

I don't know how common it is.

It is easy enough to do yourself so I'm not sure I see the need for native support.

!macro GetFileSizeLocal path define
!tempfile GetFileSizeLocal_
!system 'for %A in ("${path}") do @echo !define ${define} %~zA > "${GetFileSizeLocal_}"'
!include "${GetFileSizeLocal_}"
!delfile "${GetFileSizeLocal_}"
!undef GetFileSizeLocal_
!macroend

!insertmacro GetFileSizeLocal "$%windir%\explorer.exe" expsize
!define /math expsizemb ${expsize} / 1048576
!warning "Explorer is ${expsize} bytes (~${expsizemb} MiB)."