Re: [AD] Finding the current directory path

[Thomas Fjellstrom <tfjellstrom@xxxxxxxxxx>]

On December 14, 2008, Colin Ward wrote:
> On 13/12/2008, you wrote:
> >> I have a small but oft recurring problem with my Allegro port, which
> >> is to do with the current directory.
> >>
> >> Often this is assumed by Allegro to be "./" which works on Unix and I
> >> believe also on Windows.  However, on the Amiga this doesn't work -
> >> the current directory is simply "".  So trying to open a file such as
> >> "./allegro.cfg" will fail.
> >>
> >> I have changed a couple of files in Allegro to strip out this ./
> >> prefix for now, but I was wondering if anyone had any suggestions on
> >> how to do this more generically.  Is there any actual need for Allegro
> >> to use ./ even on Unix?  A good example of this is in
> >> file.c:pack_fopen_chunk() on line 1987 where it has the comment:
> >>
> >> /* Give up - try current directory */
> >>
> >> Any reason why it strdup()'s "./" and not ""?
> >
> > because on any sane OS "." is "current directory". If your OS doesn't
> > do it, its likely broken.
>
> Amiga OS predates Windows, Linux and Mac OS.  Mabye it is they that are
> broken?

Depends on if Amiga wants to be compatible or not. They'll find it hard to get 
the user base they want without being at least a little compatible, and they 
had a chance since the new Amiga is pretty much brand new afaik.

> Is VMS broken as well for using strange paths?  Or Mac OS <= 9?

Both are broken in many ways :P

> The fact is that some operating systems are different.  Now does anyone
> have any suggestions about how to support this case genrically?  Is there a
> reason why we can't just change the "./" to "" in this case?

I'm honestly not sure. It might have some subtle differences on windows or 
unix.

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-- 
Thomas Fjellstrom
tfjellstrom@xxxxxxxxxx