* lua args or how to identify the interpreter
@ 2010-07-22 9:51 Philipp Gesang
2010-07-22 9:55 ` Hans Hagen
0 siblings, 1 reply; 3+ messages in thread
From: Philipp Gesang @ 2010-07-22 9:51 UTC (permalink / raw)
To: ntg-context
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Hi all,
what would be an elegant way to make out the current interpreter from inside
lua?
For now I'm branching things at the top of the script like this:
···8<··········································································
if arg[-1] == "texlua" then
utf=unicode.utf8
else
require "lpeg"
utf=string
end
···8<··········································································
because I have neither slnunicode nor a built-in lpeg on my system's lua
installation. The problem is that luatex has arg[-1] == nil but arg[0]
== "luatex", and context sets all args to nil, so my crude way of
determining the interpreter by cl args fails with both.
I tried something like "local string = utf or string" as well, but this works
only in context which has utf==unicode.utf8 or something.
Thanks for your help
Philipp
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: lua args or how to identify the interpreter
2010-07-22 9:51 lua args or how to identify the interpreter Philipp Gesang
@ 2010-07-22 9:55 ` Hans Hagen
2010-07-22 10:42 ` Philipp Gesang
0 siblings, 1 reply; 3+ messages in thread
From: Hans Hagen @ 2010-07-22 9:55 UTC (permalink / raw)
To: mailing list for ConTeXt users; +Cc: Philipp Gesang
On 22-7-2010 11:51, Philipp Gesang wrote:
> Hi all,
>
> what would be an elegant way to make out the current interpreter from inside
> lua?
>
> For now I'm branching things at the top of the script like this:
>
> ···8<··········································································
> if arg[-1] == "texlua" then
> utf=unicode.utf8
> else
> require "lpeg"
> utf=string
> end
> ···8<··········································································
if you run your script with mtxrun then you can ask for arguments using
environment.argument
environment.files
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: lua args or how to identify the interpreter
2010-07-22 9:55 ` Hans Hagen
@ 2010-07-22 10:42 ` Philipp Gesang
0 siblings, 0 replies; 3+ messages in thread
From: Philipp Gesang @ 2010-07-22 10:42 UTC (permalink / raw)
To: mailing list for ConTeXt users
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On 2010-07-22 <11:55:38>, Hans Hagen wrote:
> On 22-7-2010 11:51, Philipp Gesang wrote:
> >Hi all,
> >
> >what would be an elegant way to make out the current interpreter from inside
> >lua?
> >
> >For now I'm branching things at the top of the script like this:
> >
> >···8<··········································································
> >if arg[-1] == "texlua" then
> > utf=unicode.utf8
> >else
> > require "lpeg"
> > utf=string
> >end
> >···8<··········································································
>
> if you run your script with mtxrun then you can ask for arguments using
>
> environment.argument
> environment.files
Hi Hans,
thank you, I was rather looking for some unified way of identifying the
lua interpreter that would work with the 4 machines I mentioned. Nevermind,
individually testing, while it does not really look good, works fine:
···8<··········································································
if context then
interp = "context"
elseif arg[0] == "luatex" then
interp = "luatex"
elseif arg[-1] == "texlua" then
interp = "texlua"
else
interp = "plainlua"
end
···8<··········································································
>
>
>
> -----------------------------------------------------------------
> Hans Hagen | PRAGMA ADE
> Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
> tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
> | www.pragma-pod.nl
> -----------------------------------------------------------------
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive : http://foundry.supelec.fr/projects/contextrev/
> wiki : http://contextgarden.net
> ___________________________________________________________________________________
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
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