From: Hans Hagen via ntg-context <ntg-context@ntg.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Cc: Hans Hagen <j.hagen@xs4all.nl>, Pablo Rodriguez <oinos@gmx.es>
Subject: Re: check installed program using Lua
Date: Mon, 1 Nov 2021 17:13:47 +0100 [thread overview]
Message-ID: <5ce3bc9f-7cc3-9731-8e49-331654de352e@xs4all.nl> (raw)
In-Reply-To: <ca5f0f04-b655-bb75-7a7c-9b4ee915f5eb@gmx.es>
On 11/1/2021 2:26 PM, Pablo Rodriguez via ntg-context wrote:
> Dear list,
>
> is there a way if a program is installed on the computer using Lua.
>
> I have the following sample:
>
> \starttext
> \startluacode
> filename = tex.jobname .. ".pdf"
> os.exec("dir " .. filename)
> \stopluacode
> \stoptext
>
> Is there a way to wrap os.exec() in the sample so that it only runs if
> "dir" is available?
>
> I know that os.name would be an option here, but not in my real world
> document.
\starttext
\startluacode
if lfs.isfile(tex.jobname .. ".pdf") then
context("YES")
end
if lfs.isfile(file.addsuffix(environment.outputfilename,"pdf")) then
context("YES")
end
if #dir.glob(file.addsuffix(environment.outputfilename,"pdf")) > 0 then
context("YES")
end
\stopluacode
\stoptext
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next prev parent reply other threads:[~2021-11-01 16:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-01 13:26 Pablo Rodriguez via ntg-context
2021-11-01 14:10 ` Taco Hoekwater via ntg-context
2021-11-02 18:59 ` Pablo Rodriguez via ntg-context
2021-11-01 16:13 ` Hans Hagen via ntg-context [this message]
2021-11-02 19:01 ` Pablo Rodriguez via ntg-context
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