urbit/pkg/arvo/sys/vane/dill.hoon
fang 3fdef14688
dill: stop redrawing the prompt & cursor
No longer inserts newlines or redraws the prompt post-print, pushing
this responsibility down to drum where it belongs.

Additionally, separates the flow for dill's own output, from that of the
console application. This lets us keep the desired behavior for now, and
will ease reworking in the future.

Last-printed-line and cursor position are still kept around in dill
state, in order to respond to the relevant scry endpoints. These should
either be refactored to scry into the underlying console app, or be
removed entirely in favor of %hey.
2021-02-10 14:23:17 +01:00

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!:
:: dill (4d), terminal handling
::
|= our=ship
=, dill
=> |% :: interface tiles
+$ gill (pair ship term) :: general contact
-- ::
=> |% :: console protocol
+$ axle ::
$: %4 ::TODO replace ducts with session ids ::
hey=(unit duct) :: default duct
dug=(map duct axon) :: conversations
eye=(jug duct duct) :: outside listeners
lit=? :: boot in lite mode
$= veb :: vane verbosities
$~ (~(put by *(map @tas log-level)) %hole %soft) :: quiet packet crashes
(map @tas log-level) ::
== ::
+$ axon :: dill per duct
$: ram=term :: console program
tem=(unit (list dill-belt)) :: pending, reverse
wid=_80 :: terminal width
pos=$@(@ud [@ud @ud]) :: cursor position
see=$%([%lin (list @c)] [%klr stub]) :: current line
== ::
+$ log-level ?(%hush %soft %loud) :: none, line, full
-- => ::
|% :: protocol outward
+$ mess ::
$% [%dill-belt p=(hypo dill-belt)] ::
== ::
+$ move [p=duct q=(wind note gift)] :: local move
+$ note :: out request $->
$~ [%d %verb ~] ::
$% $: %$ ::
$>(?(%verb %whey) waif) ::
== ::
$: %c ::
$> $? %merg :: merge desks
%perm :: change permissions
%warp :: wait for clay hack
== ::
task:clay ::
== ::
$: %d ::
$> $? %crud ::
%heft ::
%text ::
%verb ::
== ::
task:dill ::
== ::
$: %g ::
$> $? %conf ::
%deal ::
%goad ::
== ::
task:gall ::
== ::
$: %j ::
$> $? %dawn ::
%fake ::
== ::
task:jael ::
== == ::
+$ sign :: in result $<-
$~ [%dill %blit ~] ::
$% $: %behn ::
$% $>(%writ gift:clay) :: XX %slip
$>(%mere gift:clay) :: XX %slip
== == ::
$: %clay ::
$> $? %mere ::
%note ::
%writ ::
== ::
gift:clay ::
== ::
$: %dill ::
$>(%blit gift:dill) ::
== ::
$: %gall ::
$> $? %onto ::
%unto ::
== ::
gift:gall ::
== == ::
:::::::: :: dill tiles
--
=| all=axle
|= [now=@da eny=@uvJ rof=roof] :: current invocation
=> ~% %dill ..part ~
|%
++ as :: per cause
=| moz=(list move)
|_ [hen=duct axon]
++ abet :: resolve
^- [(list move) axle]
[(flop moz) all(dug (~(put by dug.all) hen +<+))]
::
++ call :: receive input
|= kyz=task
^+ +>
?+ -.kyz ~& [%strange-kiss -.kyz] +>
%flow +>
%harm +>
%hail (send %hey ~)
%belt (send `dill-belt`p.kyz)
%text (fore (tuba p.kyz) ~)
%crud :: (send `dill-belt`[%cru p.kyz q.kyz])
(crud p.kyz q.kyz)
%blew (send %rez p.p.kyz q.p.kyz)
%heft (pass /whey %$ whey/~)
%meld (dump kyz)
%pack (dump kyz)
%crop (dump trim+p.kyz)
%verb (pass /verb %$ kyz)
==
::
++ crud
|= [err=@tas tac=(list tank)]
:: unknown errors default to %loud
::
=/ lev=log-level (~(gut by veb.all) err %loud)
:: apply log level for this error tag
::
=/ =wall
?- lev
%hush ~
%soft ~["crud: %{(trip err)} event failed"]
%loud :- "crud: %{(trip err)} event failed"
%- zing
%+ turn (flop tac)
|=(a=tank (~(win re a) [0 wid]))
==
?: =(~ wall) +>.$
(fore (turn wall tuba))
::
++ dump :: pass down to hey
|= git=gift
?> ?=(^ hey.all)
+>(moz [[u.hey.all %give git] moz])
::
++ done :: return gift
|= git=gift
=- +>.$(moz (weld - moz))
%+ turn
:- hen
~(tap in (~(get ju eye.all) hen))
|=(=duct [duct %give git])
::
++ deal :: pass to %gall
|= [=wire =deal:gall]
(pass wire [%g %deal [our our] ram deal])
::
++ pass :: pass note
|= [=wire =note]
+>(moz :_(moz [hen %pass wire note]))
::
++ fore :: send dill output
::NOTE there are still implicit assumptions
:: about the underlying console app's
:: semantics here. specifically, trailing
:: newlines are important to not getting
:: overwritten by the drum prompt, and a
:: bottom-of-screen cursor position gives
:: nicest results. a more agnostic solution
:: will need to replace this arm, someday.
:: perhaps +send this to .ram instead?
::
|= liz=(list (list @c))
^+ +>
=. +>
=| biz=(list blit)
|- ^+ +>.^$
?~ liz (done %blit biz)
$(liz t.liz, biz (welp biz [%lin i.liz] [%nel ~] ~))
:: since dill is acting on its own accord,
:: we %hey the term app so it may clean up.
::
(send %hey ~)
::
++ from :: receive blit
|= bit=dill-blit
^+ +>
?: ?=(%mor -.bit)
|- ^+ +>.^$
?~ p.bit +>.^$
$(p.bit t.p.bit, +>.^$ ^$(bit i.p.bit))
?: ?=(%out -.bit)
(done %blit [%lin p.bit]~)
?: ?=(%pro -.bit)
=. see [%lin p.bit]
(done %blit [%lin p.bit]~)
?: ?=(%pom -.bit)
=. see [%klr p.bit]
(done %blit [%klr p.bit]~)
?: ?=(%hop -.bit)
(done(pos p.bit) %blit [bit ~])
?: ?=(%qit -.bit)
(dump %logo ~)
(done %blit [bit ~])
:: XX move
::
++ sein
^- ship
=/ dat=(unit (unit cage))
(rof `[our ~ ~] j/[[our sein/da/now] /(scot %p our)])
;;(ship q.q:(need (need dat)))
::
++ init :: initialize
(pass /merg/home [%c %merg %kids our %home da+now %init])
::
++ mere :: continue init
^+ .
=/ myt (flop (fall tem ~))
=/ can (clan:title our)
=. tem ~
=. +> (pass / %g %conf ram)
=? +> ?=(?(%earl %duke %king) can)
(ota sein %kids)
:: make kids desk publicly readable, so syncs work.
::
=. +> (show %kids)
=. +> hood-set-boot-apps
=. +> peer
|- ^+ +>+
?~ myt +>+
$(myt t.myt, +>+ (send i.myt))
::
++ into :: preinitialize
|= gyl=(list gill)
=. tem `(turn gyl |=(a=gill [%yow a]))
(pass / [%c %warp our %home `[%sing %y [%ud 1] /]])
::
++ send :: send action
|= bet=dill-belt
^+ +>
?^ tem
+>(tem `[bet u.tem])
(deal / [%poke [%dill-belt -:!>(bet) bet]])
::
++ hood-set-boot-apps
(deal / [%poke %drum-set-boot-apps !>(lit.all)])
::
++ peer
(deal / [%watch /drum])
::
++ show :: permit reads on desk
|= des=desk
(pass /show [%c %perm des / r+`[%black ~]])
::
++ ota
|= syn=[ship desk]
(deal /sync %poke %kiln-ota !>(`syn))
::
++ take :: receive
|= [tea=wire sih=sign]
^+ +>
?- sih
[%gall %onto *]
:: ~& [%take-gall-onto +>.sih]
?- -.+>.sih
%| (crud %onto p.p.+>.sih)
%& (fore (tuba "{<p.p.sih>}") ~)
==
::
[%gall %unto *]
:: ~& [%take-gall-unto +>.sih]
?- -.+>.sih
%poke-ack ?~(p.p.+>.sih +>.$ (crud %coup u.p.p.+>.sih))
%kick peer
%watch-ack ?~ p.p.+>.sih
+>.$
(dump:(crud %reap u.p.p.+>.sih) %logo ~)
%fact (from ;;(dill-blit q:`vase`+>+>.sih))
==
::
[%clay %note *]
(fore (tuba p.sih ' ' ~(ram re q.sih)) ~)
::
[?(%behn %clay) %writ *]
init
::
[?(%behn %clay) %mere *]
?: ?=(%& -.p.sih)
mere
(mean >%dill-mere-fail< >p.p.p.sih< q.p.p.sih)
::
[%dill %blit *]
(done +.sih)
==
--
::
++ ax :: make ++as
|= hen=duct
^- (unit _as)
=/ nux (~(get by dug.all) hen)
?~ nux ~
(some ~(. as hen u.nux))
--
|% :: poke+peek pattern
++ call :: handle request
|= $: hen=duct
dud=(unit goof)
wrapped-task=(hobo task)
==
^+ [*(list move) ..^$]
~| wrapped-task
=/ task=task ((harden task) wrapped-task)
::
:: error notifications "downcast" to %crud
::
=? task ?=(^ dud)
~| %crud-in-crud
?< ?=(%crud -.task)
[%crud -.task tang.u.dud]
::
:: the boot event passes thru %dill for initial duct distribution
::
?: ?=(%boot -.task)
?> ?=(?(%dawn %fake) -.p.task)
?> =(~ hey.all)
=. hey.all `hen
=/ boot
((soft $>($?(%dawn %fake) task:jael)) p.task)
?~ boot
~& %dill-no-boot
~& p.task
~| invalid-boot-event+hen !!
=. lit.all lit.task
[[hen %pass / %j u.boot]~ ..^$]
:: we are subsequently initialized.
::
?: ?=(%init -.task)
?> =(~ dug.all)
:: configure new terminal, setup :hood and %clay
::
=* duc (need hey.all)
=/ app %hood
=/ see (tuba "<awaiting {(trip app)}, this may take a minute>")
=/ zon=axon [app input=[~ ~] width=80 cursor=(lent see) lin+see]
::
=^ moz all abet:(~(into as duc zon) ~)
[moz ..^$]
:: %flog tasks are unwrapped and sent back to us on our default duct
::
?: ?=(%flog -.task)
?~ hey.all
[~ ..^$]
:: this lets lib/helm send %heft a la |mass
::
=? p.task ?=([%crud %hax-heft ~] p.task) [%heft ~]
::
$(hen u.hey.all, wrapped-task p.task)
:: %vega and %trim notifications come in on an unfamiliar duct
::
?: ?=(?(%trim %vega) -.task)
[~ ..^$]
:: %knob sets a verbosity level for an error tag
::
?: ?=(%knob -.task)
=. veb.all (~(put by veb.all) tag.task level.task)
[~ ..^$]
::
?: ?=(%view -.task)
:: crash on viewing non-existent session
::
~| [%no-session session.task]
?> =(~ session.task)
=/ session (need hey.all)
=/ =axon (~(got by dug.all) session)
:: register the viewer and send them the prompt line
::
:- [hen %give %blit [see.axon]~]~
..^$(eye.all (~(put ju eye.all) session hen))
::
?: ?=(%flee -.task)
:- ~
~| [%no-session session.task]
?> =(~ session.task)
=/ session (need hey.all)
..^$(eye.all (~(del ju eye.all) session hen))
::
=/ nus (ax hen)
=? nus &(?=(~ nus) ?=(^ hey.all))
::TODO allow specifying target session in task
(ax u.hey.all)
?~ nus
:: :hen is an unrecognized duct
:: could be before %boot (or %boot failed)
::
~& [%dill-call-no-flow hen -.task]
=/ tan ?:(?=(%crud -.task) q.task ~)
[((slog (flop tan)) ~) ..^$]
::
=^ moz all abet:(call:u.nus task)
[moz ..^$]
::
++ load :: import old state
|= old=axle
..^$(all old)
::
++ scry
^- roon
|= [lyc=gang car=term bem=beam]
^- (unit (unit cage))
=* ren car
=* why=shop &/p.bem
=* syd q.bem
=* lot=coin $/r.bem
=* tyl s.bem
::
?. ?=(%& -.why) ~
=* his p.why
::TODO don't special-case whey scry
::
?: &(=(ren %$) =(tyl /whey))
=/ maz=(list mass)
:~ hey+&+hey.all
dug+&+dug.all
==
``mass+!>(maz)
:: only respond for the local identity, %$ desk, current timestamp
::
?. ?& =(&+our why)
=([%$ %da now] lot)
=(%$ syd)
==
~
:: /dx/sessions//line blit current line (prompt) of default session
:: /dx/sessions//cursor @ud current cursor position of default session
::TODO support asking for specific sessions once session ids are real
::
?. ?=(%x ren) ~
?+ tyl ~
[%sessions %$ *]
?~ hey.all [~ ~]
?~ session=(~(get by dug.all) u.hey.all) [~ ~]
?+ t.t.tyl ~
[%line ~] ``blit+!>(`blit`see.u.session)
[%cursor ~] ``blit+!>(`blit`hop+pos.u.session)
==
==
::
++ stay all
::
++ take :: process move
|= [tea=wire hen=duct dud=(unit goof) hin=sign]
^+ [*(list move) ..^$]
?^ dud
~|(%dill-take-dud (mean tang.u.dud))
::
=/ nus (ax hen)
?~ nus
:: :hen is an unrecognized duct
:: could be before %boot (or %boot failed)
::
~& [%dill-take-no-flow hen -.hin +<.hin]
[~ ..^$]
=^ moz all abet:(take:u.nus tea hin)
[moz ..^$]
--