Re: [pclasses-devel] some ideas for expanding P

[Christian P. <cp...@se...>]

Am Montag 20 Dezember 2004 22:12 schrieb stephan beal:
> On Monday 20 December 2004 12:52, Christian Prochnow wrote:
> > >   Process proc("http://...");
> > >   proc.addArg( "foo=bar" );
> >
> > This should already work. Have a look into  'demo/process.cpp'.
>
> It works with bins for me, but not with URLs:
>
>     Process proc("http://s11n/");
>
> creating process
> I/O error: No such file or directory
>
> i assume it's the same problem as the IOManager example not being able
> to find http handler.

Ahh ok, now i got you. The 'Process' class only supports spawning local 
processes and reading/writing to their stdin/stdout. I would like to leave 
this unchanged. Process is a low-level system abstraction class, which should 
be as small as possible. 
Instead i would implement a IOPlugin "process://" which could do the job.
That way you could do every IO with the IOManager.

> > For accessing process environment, a simple ProcessEnv class exists.
>
> i'd like to add funcs to do env ${var} expansion on strings. e.g.:
>
>   std::string s = myenv.parseVars( inputstring );
>
> i've got the code for it, just need to plug it in to the tree. With that
> support we can do things like: open_file( "${HOME}/.myconf" ).
>
> In eshell, before an input command is passed off to a client eshell does
> var and alias expansion on it, plus expansions provided by wordexp (man
> 3).

Great! I would love it.

> See ya!


Greetings,

Christian