Re: [AD] Plans for Allegro 4.9.5

[Peter Wang <novalazy@xxxxxxxxxx>]

On 2008-09-13, Peter Wang <novalazy@xxxxxxxxxx> wrote:
> What can we aim for in, say, one month?  I would like to see:
> 
> - fs hooks integrated
> - panning support in kcm_audio
> - move bitmap file type registration to core
> - usual assorted fixes
> 
> The fs hooks branch is way out of date and the history is simply a mess.
> I think I'll just copy the latest versions of the fshook* files, get
> that to compile then go from there.

I'm not sure I understand the fs hooks.  There are two vtables: the
system vtable, and the entry vtable.  The system vtable lets you
override stuff like checking if a file exists, opening a file, changing
the working directory, etc.  Fine.

The entry vtable should let you override the reading and writing of the
contents of the "file".  But al_fs_set_hook only lets you override each
method once.  How would you write a program that is able to read off
disk *and* out of a memory block?  I have an idea, but it's not
consistent with the entry vtable being "totally internal".

Peter