Lua filter applied to a specific input file

Lua filter applied to a specific input file

[Peter]

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I have a working Lua filter and I'll be having pandoc iterate over multiple 
input files (for loop). However, I know in advance that my filter will only 
match on a specific file's data. Is it possible, within the AST model, to 
have the filter bail unless it's inspecting data associated with this 
specific file? Or do I need to deal with this at the pandoc invocation 
level (i.e. specify what filter to use based on the input files)? 

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Re: Lua filter applied to a specific input file

[Albert Krewinkel]

Peter <pmatulis-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> writes:

> I have a working Lua filter and I'll be having pandoc iterate over multiple
> input files (for loop). However, I know in advance that my filter will only
> match on a specific file's data. Is it possible, within the AST model, to
> have the filter bail unless it's inspecting data associated with this
> specific file? Or do I need to deal with this at the pandoc invocation
> level (i.e. specify what filter to use based on the input files)?

One possibility would be to match the exact file name. You can do so by
inspecting the `input_files` field of the global variable
`PANDOC_STATE`:

    local input_files = pandoc.List(PANDOC_STATE.input_files)
    if not input_files:includes('my-special-file.md') then
      return {}
    end

    -- rest of the script begins here.

Does that help?

--
Albert Krewinkel
GPG: 8eed e3e2 e8c5 6f18 81fe  e836 388d c0b2 1f63 1124

Re: Lua filter applied to a specific input file

[John MacFarlane]

PANDOC_STATE.input_files should give you an array of the input
files in the filter.

Peter <pmatulis-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> writes:

> I have a working Lua filter and I'll be having pandoc iterate over multiple 
> input files (for loop). However, I know in advance that my filter will only 
> match on a specific file's data. Is it possible, within the AST model, to 
> have the filter bail unless it's inspecting data associated with this 
> specific file? Or do I need to deal with this at the pandoc invocation 
> level (i.e. specify what filter to use based on the input files)? 
>
> -- 
> You received this message because you are subscribed to the Google Groups "pandoc-discuss" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
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Re: Lua filter applied to a specific input file

[Peter Matulis]

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Awesome. Thank you both.

On Thu, 14 Jan 2021 at 16:58, John MacFarlane <jgm-TVLZxgkOlNX2fBVCVOL8/A@public.gmane.org> wrote:

>
> PANDOC_STATE.input_files should give you an array of the input
> files in the filter.
>
> Peter <pmatulis-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> writes:
>
> > I have a working Lua filter and I'll be having pandoc iterate over
> multiple
> > input files (for loop). However, I know in advance that my filter will
> only
> > match on a specific file's data. Is it possible, within the AST model,
> to
> > have the filter bail unless it's inspecting data associated with this
> > specific file? Or do I need to deal with this at the pandoc invocation
> > level (i.e. specify what filter to use based on the input files)?
> >
> > --
> > You received this message because you are subscribed to the Google
> Groups "pandoc-discuss" group.
> > To unsubscribe from this group and stop receiving emails from it, send
> an email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> > To view this discussion on the web visit
> https://groups.google.com/d/msgid/pandoc-discuss/b921eb81-70fe-43c5-aba0-d4b9317c270dn%40googlegroups.com
> .
>

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