shrub/pkg/base-dev/lib/story.hoon

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/- *story
!:
^?
|%
:: XX generalize move to hoon.hoon
++ dif-ju
|= [a=story b=story]
^- story
:: if 0 is the empty set,
:: a \ 0 = a
:: 0 \ b = 0 :: anything in 0 but not in b is by definition 0
::
?: =(~ a) ~
:: uno := (a-b) + (merged items in both a and b) + (b-a)
:: ret := (a-b) + (merged items in both a and b)
:: ret = (~(int by a) uno) :: preserve only the entries whose keys are in a
=/ uno=story
%- (~(uno by a) b)
|= [k=tako:clay proses-a=proses proses-b=proses]
^- proses
(~(dif in proses-a) proses-b)
::
=/ ret=story (~(int by a) uno)
:: normalizing step, remove any keys with null sets,
:: which can occur if proses-a == proses-b above
%- ~(gas by *story)
(skip ~(tap by ret) |=([k=* v=proses] ?=(~ v)))
::
++ uni-ju
|= [a=story b=story]
^- story
:: 0 + b = b
?: =(~ a) b
%- (~(uno by a) b)
|= [k=tako:clay proses-a=proses proses-b=proses]
^- proses
(~(uni in proses-a) proses-b)
::
:: Canonical textual representation
::
++ tako-to-text
|= [=tako:clay]
^- tape
"commit: {<`@uv`tako>}\0a"
::
++ proses-to-text
|= [=proses]
^- tape
=/ proses-list=(list prose) ~(tap in proses)
?: ?=(~ proses-list) ""
?: ?=([prose ~] proses-list)
(prose-to-text i.proses-list)
%- tail
%^ spin `(list prose)`t.proses-list
(prose-to-text i.proses-list)
|= [prz=prose state=tape]
^- [prose tape]
:- prz
;: welp
state
"|||"
"\0a"
(prose-to-text prz)
==
::
++ prose-to-text
|= prz=prose
=/ [title=@t body=@t] prz
^- tape
;: welp
"{(trip title)}"
"\0a\0a"
"{(trip body)}"
"\0a"
==
::
:: Parsers
::
++ parse-commit-hash
;~ sfix
;~ pfix (jest 'commit: ')
(cook @uv ;~(pfix (jest '0v') viz:ag))
==
::
(just '\0a')
==
::
++ parse-title
;~ sfix
(cook crip (star prn))
(jest '\0a\0a')
==
::
++ parse-body
%+ cook of-wain:format
%- star
;~ less
;~(pose (jest '|||\0a') (jest '---\0a'))
(cook crip ;~(sfix (star prn) (just '\0a')))
==
::
++ parse-prose ;~(plug parse-title parse-body)
++ parse-rest-proses (star ;~(pfix (jest '|||\0a') parse-prose))
++ parse-proses (cook silt ;~(plug parse-prose parse-rest-proses))
++ parse-chapter ;~(plug parse-commit-hash parse-proses)
++ parse-story
(cook ~(gas by *story) (star ;~(sfix parse-chapter (jest '---\0a'))))
::
:: N.B: If conflicting messages are written individually,
:: instead of under the same commit, we will overwrite previous entries
:: with later ones due to the nature of gas:by.
--