Re: Inferring the location of a Lua script

[KHMan <keinhong@...>]

Robert Raschke wrote:
> On Mon, Apr 26, 2010 at 4:25 PM, Lorenzo Donati wrote:
>
>     Now to the point.
>     I need a way to make a Lua script know it's exact location, i.e. its
>     absolute file system path (under Win XP is enough) using pure Lua
>     and no C. My purpose is to build applications in pure Lua (or wxLua)
>     that can automatically find their modules/components/data without
>     any installation or shell script launcher (I'm playing with
>     executables created using wxLuafreeze and plan also to use srlua to
>     achieve a similar effect with plain Lua).
>     I've searched the archive but found only some suggestions to parse
>     arg[0], but this doesn't always work.
>
>
> I don't think this is possible without using C. I use 
> GetModuleFileName() in my Windows C startup code to find where the EXE 
> is that got invoked.
>
> But there's also the location of a particular Lua script you're getting 
> via require. I don't know if that allows you to figure out where it came 
> from.

Depending on how "proper" Lorenzo wants it to work, for "100% 
works" Unicode paths may also have to be supported... Hard to 
accomplish using pure Lua.

--
Cheers,
Kein-Hong Man (esq.)
Kuala Lumpur, Malaysia