urbit/pkg/landscape/lib/frontmatter.hoon

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::
:::: /hoon/frontmatter/lib
::
/? 310
::
=, format
|%
++ atr-lines
|= atr=(map cord cord)
%+ turn (sort ~(tap by atr) |=([[a=@ @] [b=@ @]] (aor a b)))
|= [k=cord v=cord]
(rap 3 k ': ' v ~)
::
++ atr-key ;~(sfix (star ;~(less col prn)) col ace)
++ print
|= [atr=(map cord cord) src=wain]
?~ atr src
['---' (welp (atr-lines atr) '---' src)]
++ parse
=| atr=(map cord cord)
|= wan=wain ^+ [atr mud='']
?~ wan [~ '']
?^ (rush i.wan (star ace))
$(wan t.wan)
?. =('---' i.wan) [~ (of-wain wan)]
|- ^+ [atr mud='']
?~ t.wan ~|(%unclosed-metadata !!)
?: =('---' i.t.wan) [atr (of-wain t.t.wan)]
?^ (rush i.t.wan (star ace))
$(wan t.wan)
=- $(wan t.wan, atr (~(put by atr) (crip key) (crip val)))
~| malformed-attribute+i.t.wan
^- [key=tape ^ val=tape]
+>:(atr-key 1^1 (trip i.t.wan))
--