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From: Frank Heckenbach
Subject: Environment Variables within Code.
Date: 15 Nov 2002, 13:20:24

Marco van de Voort wrote:

> > Andrew McCall a ?crit:
> > > Is it possible to access environment variables within gpc code, 
> > > for example $USER ?
> > 
> > There is a GetEnv function in the module gpc.pas for that purpose. e.g.
> > 
> > username:=GetEnv('USER');
> > 
> > also
> > 
> > username:=CStringGetEnv('USER');
> > 
> > See gpc.pas in the units directory for the difference.
> 
> I think he wants to embed environment variables on the compiling machine
> in the code.

I don't know what makes you think so (generally I think a program
would be more interested to know the user who's running it than who
has compiled it), but if so:

  gpc -DUSER="'$USER'" ...

will define USER as a macro (string constant), so something like

  WriteLn (USER)

will work. (This is assuming USER is set, some systems use LOGNAME
instead.)

Prof A Olowofoyeku (The African Chief) wrote:

> > Is it possible to access environment variables within gpc code,
> > for example $USER ?
> 
> Check "getenv" in the DOS unit.

Also in the GPC unit (which is generally preferable to the Dos unit
unless you're maintaining BP compatible code).

Frank

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