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if not modules then modules = { } end modules ['strc-not'] = {
version = 1.001,
comment = "companion to strc-not.tex",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local format = string.format
local next = next
local texsprint, texwrite, texcount = tex.sprint, tex.write, tex.count
local ctxcatcodes = tex.ctxcatcodes
local trace_notes = false trackers.register("structure.notes", function(v) trace_notes = v end)
structure = structure or { }
structure.helpers = structure.helpers or { }
structure.lists = structure.lists or { }
structure.sections = structure.sections or { }
structure.counters = structure.counters or { }
structure.notes = structure.notes or { }
structure.notes.states = structure.notes.states or { }
structure.lists.enhancers = structure.lists.enhancers or { }
storage.register("structure/notes/states", structure.notes.states, "structure.notes.states")
local helpers = structure.helpers
local lists = structure.lists
local sections = structure.sections
local counters = structure.counters
local notes = structure.notes
local notestates = structure.notes.states
local notedata = { }
-- state: store, insert, postpone
function notes.store(tag,n)
local nd = notedata[tag]
if not nd then
nd = { }
notedata[tag] = nd
end
local nnd = #nd+1
nd[nnd] = n
local state = notestates[tag]
if state.kind ~= "insert" then
if trace_notes then
logs.report("notes","storing %s with state %s as %s",tag,state.kind,nnd)
end
state.start = state.start or nnd
end
tex.write(#nd)
end
function notes.get(tag,n)
local nd = notedata[tag]
if nd then
n = n or #notedata
nd = nd[n or n]
if nd then
if trace_notes then
logs.report("notes","getting %s of %s",n,tag)
end
return structure.lists.collected[nd]
end
end
end
function notes.define(tag,kind,number)
local state = notes.setstate(tag,kind)
state.number = number
end
function notes.save(tag,newkind)
local state = notestates[tag]
if state and not state.saved then
state.saved = notedata[tag]
state.savedkind = state.kind
state.kind = newkind or state.kind
notedata[tag] = { }
end
end
function notes.restore(tag)
local state = notestates[tag]
if state and state.saved then
state.saved = nil
state.kind = state.savedkind
notedata[tag] = state.saved
end
end
function notes.setstate(tag,newkind)
local state = notestates[tag]
if trace_notes then
logs.report("notes","setting state of %s from %s to %s",tag,(state and state.kind) or "unset",newkind)
end
if not state then
state = {
kind = newkind
}
notestates[tag] = state
elseif newkind == "insert" then
if not state.start then
state.kind = newkind
end
else
state.kind = newkind
end
-- state.start can already be set and will be set when an entry is added or flushed
return state
end
function notes.getstate(tag)
local state = notestates[tag]
texsprint(ctxcatcodes,(state and state.kind ) or "unknown")
end
function notes.doifcontent(tag)
local ok = notestates[tag]
if ok then
if ok.kind == "insert" then
ok = tex.box[ok.number]
if ok then
ok = tbs.list
ok = lst and lst.next
end
else
ok = ok.start
end
end
commands.doif(ok)
end
local function internal(tag,n)
local nd = notes.get(tag,n)
if nd then
local r = nd.references
if r then
local i = r.internal
--~ return i and lists.internals[i]
return i and jobreferences.internals[i]
end
end
return nil
end
local function ordered(kind,name,n)
local o = lists.ordered[kind]
o = o and o[name]
return o and o[n]
end
function notes.checkpagechange(tag) -- called before increment !
local nd = notedata[tag] -- can be unset at first entry
if nd then
local current = ordered("note",tag,#nd)
local nextone = ordered("note",tag,#nd+1)
if nextone then
-- we can use data from the previous pass
if nextone.pagenumber.number > current.pagenumber.number then
counters.reset(tag)
end
elseif current then
-- we need to locate the next one, best guess
if texcount.realpageno > current.pagenumber.number then
counters.reset(tag)
end
end
end
end
function notes.deltapage(tag,n)
-- 0:unknown 1:textbefore, 2:textafter, 3:samepage
local what = 0
local li = internal(tag,n)
if li then
local metadata, pagenumber = li.metadata, li.pagenumber
if metadata and pagenumber then
local symbolpage = metadata.symbolpage or 0
local notepage = pagenumber.number or 0
if notepage > 0 and symbolpage > 0 then
if notepage < symbolpage then
what = 1
elseif notepage > symbolpage then
what = 2
else
what = 3
end
end
else
-- might be a note that is not flushed due to to deep
-- nesting in a vbox
what = 3
end
end
tex.write(what)
end
function notes.postpone()
if trace_notes then
logs.report("notes","postponing all insert notes")
end
for tag, state in next, notestates do
if state.kind ~= "store" then
notes.setstate(tag,"postpone")
end
end
end
function notes.setsymbolpage(tag,n)
local nd = notes.get(tag,n)
if nd then
nd.metadata.symbolpage = texcount.realpageno
end
end
function notes.getsymbolpage(tag,n)
local nd = notes.get(tag,n)
nd = nd and nd.metadata.symbolpage
texwrite(nd or 0)
end
function notes.getnumberpage(tag,n)
local li = internal(tag,n)
li = li and li.pagenumber
li = li and li.numbers
li = li and li[1]
texwrite(li or 0)
end
function notes.flush(tag,whatkind) -- store and postpone
local state = notestates[tag]
local kind = state.kind
if kind == whatkind then
if kind == "postpone" then
local nd = notedata[tag]
local ns = state.start -- first index
if nd and ns then
if trace_notes then
logs.report("notes","flushing state %s of %s from %s to %s",whatkind,tag,ns,#nd)
end
for i=ns,#nd do
texsprint(ctxcatcodes,format("\\handlenoteinsert{%s}{%s}",tag,i))
end
end
state.start = nil
state.kind = "insert"
elseif kind == "store" then
local nd = notedata[tag]
local ns = state.start -- first index
if trace_notes then
logs.report("notes","flushing state %s of %s from %s to %s",whatkind,tag,ns,#nd)
end
if nd and ns then
for i=ns,#nd do
texsprint(ctxcatcodes,format("\\handlenoteitself{%s}{%s}",tag,i))
end
end
state.start = nil
elseif trace_notes then
logs.report("notes","not flushing state %s of %s",whatkind,tag)
end
elseif trace_notes then
logs.report("notes","not flushing state %s of %s",whatkind,tag)
end
end
function notes.flushpostponed()
if trace_notes then
logs.report("notes","flushing all postponed notes")
end
for tag, _ in next, notestates do
notes.flush(tag,"postpone")
end
end
function notes.resetpostponed()
if trace_notes then
logs.report("notes","resetting all postponed notes")
end
for tag, state in next, notestates do
if state.kind == "postpone" then
state.start = nil
state.kind = "insert"
end
end
end
function notes.title(tag,n)
structure.lists.savedtitle(tag,notedata[tag][n])
end
function notes.number(tag,n,spec)
structure.lists.savedprefixednumber(tag,notedata[tag][n])
end
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