OpenEuphoria

Re: Detecting the Eu version

• Posted by "Igor Kachan" <kinz at peterlink.ru> Dec 13, 2004
• 581 views

Hi, Juergen!

You wrote:

> Hi all,
> 
> recently Derek and Pete (L) posted here some useful code, that allows
> a program to detect the current Eu version at runtime. I think it is
> especially helpful to use such a functionality in libraries, that
> require at least a particular Eu version.
> 
> Concerning Eu 2.5, it can look like this:
> }}}
<eucode>
> include machine.e
> if routine_id("crash_routine") = -1 then       -- crash_routine() was
>    puts(1, "Euphoria 2.5 or later required."   -- introduced in v2.5
>          & "\n\nPress Enter ...")
>    if getc(0) then end if
>    abort(1)
> end if

There is some universal method - all ex.exes, exw.exes, exus, ec.exes  etc
have the unique lengths.

So, you can detect the version with something like to:

global function version(sequence name, atom EXE_Length)
 name = machine_func(22, name) -- dir info
    if name[1][3]  =   EXE_Length then
          return 1
    else 
          return 0
   end if
end fubction

[snip]

Just pass the name of the needed interpreter and
its known length and you'll get an answer is it yours one
or no, it is not.

Regards,
Igor Kachan
kinz at peterlink.ru