[plt-scheme] Loading at runtime

Oh, I see. If you invoke it from the commandline, I expect you'll get
the right directory, but not like that, under os x.

I assume that there is a reason why including file.dat into the
executable is a bad idea?

Robby

On 10/6/07, Matt Jadud <jadudm at gmail.com> wrote:
> I throw the error
>
> (error 'foo
>                "Cannot find 'file.dat' in ~s"
>                (current-directory))
>
> and I get a path of <path:/>.
>
> I think that's the notation. Either way, the point is, the executable
> (Mac OSX, DrScheme 371 3m) seems to be claiming that my current
> directory is '/'.
>
> This actually needs to deploy on Windows more than anything else, but
> it strikes me as odd that I don't at least get something resembling a
> good path this way. The executable was created from DrScheme using
> "Create Executable," built for distribution, and based on MrEd. The
> executable bundle was first copied from the disk image onto the local
> HD, and then executed... which is where the problem/error in finding a
> path manifested itself.
>
> Cheers,
> Matt
>
> On 10/6/07, Robby Findler <robby at cs.uchicago.edu> wrote:
> > I would have thought that current-directory is what you want (which is
> > the same as using a relative path), but that's not working?
> >
> > How did you create the executable? When you start it up, what is the
> > value of (current-directory)?
> >
> > Robby
> >
> > On 10/6/07, Matt Jadud <jadudm at gmail.com> wrote:
> > > Hi all,
> > >
> > > So I've created an executable. I want it to 'read' a datafile from the
> > > same directory as the executable. I don't know where that executable
> > > will end up... but I know the datafile will be in the same place.
> > > (Well, I'll check to see if it is first, and if it isn't, then I'll
> > > throw an error. But that's a digression.)
> > >
> > > Simply using 'open-input-file' with a "filename.dat" doesn't do the
> > > trick. 'define-runtime-path' gives me something that (on my Mac) will
> > > let me move the executable, but the datafile needs to be in the same
> > > place as I developed the executable... that is, the datafile and
> > > executable can't move together.
> > >
> > > It doesn't seem like "this-expression-source-directory" is what I want.
> > >
> > > How do I open a file relative to the executing program I've bundled
> > > for distribution? I feel like this should be obvious, but I'm missing
> > > it at the moment. No doubt, I'll find it in the Help Desk
> > > momentarily...
> > >
> > > Cheers,
> > > Matt
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> > >
> >
>