GnuStep + Lua (Re: walking a directory tree)

[Asko Kauppi <askok@...>]

Since the last message, I've started making GnuStep binding to Lua.  
While it offers much more than directory browsing, it offers also  
that, and does it using a nice enumerator (bound into Lua as a  
regular for iterator).

There are several points going for GnuStep with Lua:
  - existing API is stable
  - designed for a dynamic language (Objective-C), which shows in  
the API
  - not using much inheritance (which I think is only good)
  - implemented for Linux, Win32, Mac OS X (native), Solaris
  - covers the full range of OS necessities: networking, file  
system, timing, multithreading

It will be released later this spring, already now it feels right,  
and will offer quite a punch when combined with a language like Lua.  
In fact, the API suits way better to be used from Lua than Objective- 
C. String, arrays, garbage collection are way better in Our Language  
of Love. :)

-asko


Felipe Albrecht kirjoitti 4.1.2007 kello 21.25:

> Hi,
>
> yesterday, while I was studing Lua, I did this really simple [and
> stupid] library:
> http://distphylo.svn.sourceforge.net/viewvc/distphylo/trunk/ldirlib/
> They have 2 functions: dir:cwd(), returning current working directory
> and dir:list(), that returns a table of tables with files names and
> yours types.
>
> The example, does exactly what you want, walking by directory.
>
> My 2 cents.
>
>
> Felipe Albrecht
>
> On 12/19/06, Asko Kauppi <askok@dnainternet.net> wrote:
> > The 'ex' package was news to me; worth a close look.
> >
> > There's also a possibility of using 100% Lua code, and os.execute()
> > call, in an OS independent way. Lumikki has such code within it; see
> > dirtools.lua if someone's interested.
> >
> > http://luaforge.net/frs/?group_id=24    (take 0.22 tgz = the latest)
> >
> > - asko
> >
> >
> > Ken Smith kirjoitti 19.12.2006 kello 2.09:
> >
> > > On 12/18/06, Mark Edgar
> > >> lposix:
> > >>
> > >>    -- http://www.tecgraf.puc-rio.br/~lhf/ftp/lua/#lposix
> > >>    require "lposix"
> > >>    for name in posix.files"/foo" do
> > >>      print(name)
> > >>    end
> > >>
> > >>
> > >> And there is also the "ex" API:
> > >>
> > >>    -- http://lua-users.org/wiki/ExtensionProposal
> > >>    require "ex"
> > >>    for entry in os.dir"/foo" do
> > >>      print(entry.name)
> > >>    end
> > >
> > > Thanks Mark.  These two libs also look great.  At first blush both
> > > will be good additions to my toolbox in addition to their  
> > ability to
> > > help me in this case.
> > >
> > >  Ken Smith