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%D \module
%D [ file=s-present-steps,
%D version=2018.05.17,
%D title=\CONTEXT\ Style File,
%D subtitle=Presentation Environment Repeated Steps,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
%D This a preliminary module, a quick hack and not entirely proper \CONTEXT, but
%D let's see what more is needed.
\startmodule[present-steps]
\startluacode
moduledata.steps = moduledata.steps or { }
local steps = moduledata.steps
local data = { }
local name = "unknown"
local set = 0
local settings = nil
function steps.startsteps(buffername)
set = set + 1
data = { }
name = buffername
end
function steps.stopsteps()
local n = 0
for i=1,#data do
local state = "once"
local done = 0
while true do
context.startprocessingsteps()
for j=1,i do
local step = data[j]
local nested = step.nested
local content = step.content
local last = (i == #data) and (j == i) and 1 or 0
local option = step.option
local flush = true
if option == interfaces.variables["title"] then
if i > 1 then
flush = false
end
elseif option == interfaces.variables["repeat"] then
if i == 1 then
flush = false
end
end
if flush then
if j < i or nested == 0 then
context(function()
buffers.assign("step",content)
context.processstep("step",i,0,last)
-- context.writestatus("step a",string.formatters["%i %i %i"](i,0,last))
end)
state = "done"
else
done = done + 1
local d = done
context(function()
buffers.assign("step",content)
context.processstep("step",i,d,last)
-- context.writestatus("step b",string.formatters["%i %i %i"](i,d,last))
end)
if done == nested then
state = "done"
n = n + nested
else
state = "busy"
end
end
end
end
context.stopprocessingsteps()
if state == "done" then
break
end
end
end
end
function steps.startstep(str)
settings = utilities.parsers.settings_to_hash(str)
end
function steps.stopstep()
settings.content = buffers.getcontent(name)
settings.nested = tonumber(settings.n) or 0
data[#data+1] = settings
end
function steps.startsubstep(str)
local d = data[#data]
d.nested = d.nested + 1
end
function steps.stopsubstep()
end
\stopluacode
\definebuffer
[step]
\def\currentstep {0}
\def\currentsubstep{0}
\unexpanded\def\startprocessingsteps
{\global\wantedsubstep\zerocount}
\unexpanded\def\stopprocessingsteps
{}
\unexpanded\def\processstep#1#2#3#4%
{\par
\edef\currentstep {#2}%
\edef\currentsubstep{#3}%
\ifcase#4\relax
\setupreferencing[prefix=#2:#3]
\getbuffer[#1]%
\par
\else
\setupreferencing[prefix=]
\getbuffer[#1]%
\page
\fi}
\let\normalstartstep\startstep
\newcount\wantedsubstep
\unexpanded\def\startsteps
{\ctxlua{moduledata.steps.startsteps("\thedefinedbuffer{step}")}}
\unexpanded\def\stopsteps
{\ctxlua{moduledata.steps.stopsteps()}}
\unexpanded\def\startstep
{\dosingleempty\startstepindeed}
\def\startstepindeed[#1]%
{\ctxlua{moduledata.steps.startstep("#1")}%
\normalstartstep}
\unexpanded\def\stopstep
{\ctxlua{moduledata.steps.stopstep()}}
\let\stopsubstep\relax
\unexpanded\def\startsubstep#1\stopsubstep
{\ctxlua{moduledata.steps.startsubstep()}%
\ifcase\currentsubstep\relax
#1%
\else
\global\advance\wantedsubstep\plusone
\ifnum\currentsubstep>\wantedsubstep\else
#1%
\fi
\fi
\ctxlua{moduledata.steps.stopsubstep()}}
\stopmodule
\continueifinputfile{s-present-steps.mkiv}
\usemodule[present-common]
\inputpresentationfile{examples/present-steps-001.tex}
|
