* lua access to metadata variables
@ 2018-02-02 10:32 tolot27
[not found] ` <ac250ed2-67fb-4fef-aed1-45681b15f48c-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: tolot27 @ 2018-02-02 10:32 UTC (permalink / raw)
To: pandoc-discuss
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Hi.
I try to access a metadata variable inside a lua filter with pandoc 2.1 but
find no easy solution to cover the four cases (known to me):
1. at the command line with: -M key:value
2. inside a YAML block as a single line: key: value
3. inside a YAML block printed at a second line with: key: |
value
4. inside a YAML block printed at a second line with: key:
- value
Inside the lua filter I access the variable using meta['key'] but the type
and content depends on the case.
1. returns a string
2-4. returns a table with:
2. { [1] = { ["c"] = value,} ,}
3. { [1] = { [1] = { ["c"] = value,} ,} ,}
4. { [1] = { ["c"] = { [1] = { ["c"] = value,} ,} ,} ,}
Hence, an increasing nesting. How to easily "unlist" these tables or access
the key directly? And why is there a table key "c"?
--
Regards,
Mathias
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* Re: lua access to metadata variables
[not found] ` <ac250ed2-67fb-4fef-aed1-45681b15f48c-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
@ 2018-02-02 10:35 ` tolot27
[not found] ` <30a56c18-cfed-46e3-9c62-5bbe38167f0a-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: tolot27 @ 2018-02-02 10:35 UTC (permalink / raw)
To: pandoc-discuss
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The only thing I want is just to get the value of the key, which should be
a single value, always.
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* Re: lua access to metadata variables
[not found] ` <30a56c18-cfed-46e3-9c62-5bbe38167f0a-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
@ 2018-02-02 20:48 ` Albert Krewinkel
0 siblings, 0 replies; 3+ messages in thread
From: Albert Krewinkel @ 2018-02-02 20:48 UTC (permalink / raw)
To: pandoc-discuss
tolot27 <mathias-taBouHiV1h1goHlPtYpdqQ@public.gmane.org> writes:
> The only thing I want is just to get the value of the key, which should be a single value, always.
Your can use `pandoc.utils.stringify` on the meta value.
<https://pandoc.org/lua-filters.html#utils-stringify>
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Albert Krewinkel
GPG: 8eed e3e2 e8c5 6f18 81fe e836 388d c0b2 1f63 1124
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2018-02-02 10:32 lua access to metadata variables tolot27
[not found] ` <ac250ed2-67fb-4fef-aed1-45681b15f48c-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
2018-02-02 10:35 ` tolot27
[not found] ` <30a56c18-cfed-46e3-9c62-5bbe38167f0a-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
2018-02-02 20:48 ` Albert Krewinkel
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