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|
if not modules then modules = { } end modules ['node-tra'] = {
version = 1.001,
comment = "companion to node-ini.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
--[[ldx--
<p>This is rather experimental. We need more control and some of this
might become a runtime module instead. This module will be cleaned up!</p>
--ldx]]--
local utfchar = utf.char
local format, match, gmatch, concat, rep = string.format, string.match, string.gmatch, table.concat, string.rep
local lpegmatch = lpeg.match
local clock = os.gettimeofday or os.clock -- should go in environment
local report_nodes = logs.reporter("nodes","tracing")
local nodes, node, context = nodes, node, context
local texgetattribute = tex.getattribute
local tracers = nodes.tracers or { }
nodes.tracers = tracers
local tasks = nodes.tasks or { }
nodes.tasks = tasks
local handlers = nodes.handlers or {}
nodes.handlers = handlers
local injections = nodes.injections or { }
nodes.injections = injections
local nuts = nodes.nuts
local tonut = nuts.tonut
local tonode = nuts.tonode
local getfield = nuts.getfield
local getnext = nuts.getnext
local getprev = nuts.getprev
local getid = nuts.getid
local getchar = nuts.getchar
local getsubtype = nuts.getsubtype
local getlist = nuts.getlist
local setattr = nuts.setattr
local flush_list = nuts.flush_list
local count_nodes = nuts.count
local used_nodes = nuts.usedlist
local traverse_by_id = nuts.traverse_id
local traverse_nodes = nuts.traverse
local d_tostring = nuts.tostring
local nutpool = nuts.pool
local new_rule = nutpool.rule
local nodecodes = nodes.nodecodes
local whatcodes = nodes.whatcodes
local skipcodes = nodes.skipcodes
local fillcodes = nodes.fillcodes
local glyph_code = nodecodes.glyph
local hlist_code = nodecodes.hlist
local vlist_code = nodecodes.vlist
local disc_code = nodecodes.disc
local glue_code = nodecodes.glue
local kern_code = nodecodes.kern
local rule_code = nodecodes.rule
local whatsit_code = nodecodes.whatsit
local gluespec_code = nodecodes.gluespec
local localpar_code = whatcodes.localpar
local dir_code = whatcodes.dir
local dimenfactors = number.dimenfactors
local fillorders = nodes.fillcodes
local formatters = string.formatters
-- this will be reorganized:
function nodes.showlist(head, message)
if message then
report_nodes(message)
end
for n in traverse_nodes(tonut(head)) do
report_nodes(d_tostring(n))
end
end
function nodes.handlers.checkglyphs(head,message)
local h = tonut(head)
local t = { }
for g in traverse_by_id(glyph_code,h) do
t[#t+1] = formatters["%U:%s"](getchar(g),getsubtype(g))
end
if #t > 0 then
if message and message ~= "" then
report_nodes("%s, %s glyphs: % t",message,#t,t)
else
report_nodes("%s glyphs: % t",#t,t)
end
end
return false
end
function nodes.handlers.checkforleaks(sparse)
local l = { }
local q = used_nodes()
for p in traverse_nodes(q) do
local s = table.serialize(nodes.astable(p,sparse),nodecodes[getid(p)])
l[s] = (l[s] or 0) + 1
end
flush_list(q)
for k, v in next, l do
report_nodes("%s * %s",v,k)
end
end
local f_sequence = formatters["U+%04X:%s"]
local function tosequence(start,stop,compact)
if start then
start = tonut(start)
stop = stop and tonut(stop)
local t = { }
while start do
local id = getid(start)
if id == glyph_code then
local c = getchar(start)
if compact then
local components = getfield(start,"components")
if components then
t[#t+1] = tosequence(components,nil,compact)
else
t[#t+1] = utfchar(c)
end
else
t[#t+1] = f_sequence(c,utfchar(c))
end
elseif id == rule_code then
if compact then
t[#t+1] = "|"
else
t[#t+1] = nodecodes[id]
end
elseif id == whatsit_code and getsubtype(start) == localpar_code or getsubtype(start) == dir_code then
t[#t+1] = "[" .. getfield(start,"dir") .. "]"
elseif compact then
t[#t+1] = "[]"
else
t[#t+1] = nodecodes[id]
end
if start == stop then
break
else
start = getnext(start)
end
end
if compact then
return concat(t)
else
return concat(t," ")
end
else
return "[empty]"
end
end
nodes.tosequence = tosequence
nuts .tosequence = tosequence
function nodes.report(t,done)
report_nodes("output %a, %changed %a, %s nodes",status.output_active,done,count_nodes(tonut(t)))
end
function nodes.packlist(head)
local t = { }
for n in traverse_nodes(tonut(head)) do
t[#t+1] = d_tostring(n)
end
return t
end
function nodes.idstostring(head,tail)
head = tonut(head)
tail = tail and tonut(tail)
local t, last_id, last_n = { }, nil, 0
for n in traverse_nodes(head,tail) do -- hm, does not stop at tail
local id = getid(n)
if not last_id then
last_id, last_n = id, 1
elseif last_id == id then
last_n = last_n + 1
else
if last_n > 1 then
t[#t+1] = formatters["[%s*%s]"](last_n,nodecodes[last_id] or "?")
else
t[#t+1] = formatters["[%s]"](nodecodes[last_id] or "?")
end
last_id, last_n = id, 1
end
if n == tail then
break
end
end
if not last_id then
t[#t+1] = "no nodes"
elseif last_n > 1 then
t[#t+1] = formatters["[%s*%s]"](last_n,nodecodes[last_id] or "?")
else
t[#t+1] = formatters["[%s]"](nodecodes[last_id] or "?")
end
return concat(t," ")
end
-- function nodes.xidstostring(head,tail) -- only for special tracing of backlinks
-- head = tonut(head)
-- tail = tonut(tail)
-- local n = head
-- while n.next do
-- n = n.next
-- end
-- local t, last_id, last_n = { }, nil, 0
-- while n do
-- local id = n.id
-- if not last_id then
-- last_id, last_n = id, 1
-- elseif last_id == id then
-- last_n = last_n + 1
-- else
-- if last_n > 1 then
-- t[#t+1] = formatters["[%s*%s]"](last_n,nodecodes[last_id] or "?")
-- else
-- t[#t+1] = formatters["[%s]"](nodecodes[last_id] or "?")
-- end
-- last_id, last_n = id, 1
-- end
-- if n == head then
-- break
-- end
-- n = getprev(n)
-- end
-- if not last_id then
-- t[#t+1] = "no nodes"
-- elseif last_n > 1 then
-- t[#t+1] = formatters["[%s*%s]"](last_n,nodecodes[last_id] or "?")
-- else
-- t[#t+1] = formatters["[%s]"](nodecodes[last_id] or "?")
-- end
-- return table.concat(table.reversed(t)," ")
-- end
local function showsimplelist(h,depth,n)
h = h and tonut(h)
while h do
report_nodes("% w%s",n,d_tostring(h))
if not depth or n < depth then
local id = getid(h)
if id == hlist_code or id == vlist_code then
showsimplelist(getlist(h),depth,n+1)
end
end
h = getnext(h)
end
end
-- \startluacode
-- callback.register('buildpage_filter',function() nodes.show_simple_list(tex.lists.contrib_head) end)
-- \stopluacode
-- \vbox{b\footnote{n}a}
-- \startluacode
-- callback.register('buildpage_filter',nil)
-- \stopluacode
nodes.showsimplelist = function(h,depth) showsimplelist(h,depth,0) end
local function listtoutf(h,joiner,textonly,last)
local w = { }
while h do
local id = getid(h)
if id == glyph_code then -- always true
local c = getchar(h)
w[#w+1] = c >= 0 and utfchar(c) or formatters["<%i>"](c)
if joiner then
w[#w+1] = joiner
end
elseif id == disc_code then
local pre = getfield(h,"pre")
local pos = getfield(h,"post")
local rep = getfield(h,"replace")
w[#w+1] = formatters["[%s|%s|%s]"] (
pre and listtoutf(pre,joiner,textonly) or "",
pos and listtoutf(pos,joiner,textonly) or "",
rep and listtoutf(rep,joiner,textonly) or ""
)
elseif textonly then
if id == glue_code then
local spec = getfield(h,"spec")
if spec and getfield(spec,"width") > 0 then
w[#w+1] = " "
end
elseif id == hlist_code or id == vlist_code then
w[#w+1] = "[]"
end
else
w[#w+1] = "[-]"
end
if h == last then
break
else
h = getnext(h)
end
end
return concat(w)
end
function nodes.listtoutf(h,joiner,textonly,last)
if h then
local joiner = joiner == true and utfchar(0x200C) or joiner -- zwnj
return listtoutf(tonut(h),joiner,textonly,last and tonut(last))
else
return ""
end
end
local what = { [0] = "unknown", "line", "box", "indent", "row", "cell" }
local function showboxes(n,symbol,depth)
depth = depth or 0
symbol = symbol or "."
for n in traverse_nodes(tonut(n)) do
local id = getid(n)
if id == hlist_code or id == vlist_code then
local s = getsubtype(n)
report_nodes(rep(symbol,depth) .. what[s] or s)
showboxes(getlist(n),symbol,depth+1)
end
end
end
nodes.showboxes = showboxes
local ptfactor = dimenfactors.pt
local bpfactor = dimenfactors.bp
local stripper = lpeg.patterns.stripzeros
-- start redefinition
--
-- -- if fmt then
-- -- return formatters[fmt](n*dimenfactors[unit],unit)
-- -- else
-- -- return match(formatters["%.20f"](n*dimenfactors[unit]),"(.-0?)0*$") .. unit
-- -- end
--
-- redefined:
-- local function nodetodimen(d,unit,fmt,strip)
-- d = tonut(d) -- tricky: direct nuts are an issue
-- if unit == true then
-- unit = "pt"
-- fmt = "%0.5f%s"
-- else
-- unit = unit or 'pt'
-- if not fmt then
-- fmt = "%s%s"
-- elseif fmt == true then
-- fmt = "%0.5f%s"
-- end
-- end
-- local id = getid(d)
-- if id == kern_code then
-- local str = formatters[fmt](getfield(d,"width")*dimenfactors[unit],unit)
-- return strip and lpegmatch(stripper,str) or str
-- end
-- if id == glue_code then
-- d = getfield(d,"spec")
-- end
-- if not d or not getid(d) == gluespec_code then
-- local str = formatters[fmt](0,unit)
-- return strip and lpegmatch(stripper,str) or str
-- end
-- local width = getfield(d,"width")
-- local plus = getfield(d,"stretch_order")
-- local minus = getfield(d,"shrink_order")
-- local stretch = getfield(d,"stretch")
-- local shrink = getfield(d,"shrink")
-- if plus ~= 0 then
-- plus = " plus " .. stretch/65536 .. fillcodes[plus]
-- elseif stretch ~= 0 then
-- plus = formatters[fmt](stretch*dimenfactors[unit],unit)
-- plus = " plus " .. (strip and lpegmatch(stripper,plus) or plus)
-- else
-- plus = ""
-- end
-- if minus ~= 0 then
-- minus = " minus " .. shrink/65536 .. fillcodes[minus]
-- elseif shrink ~= 0 then
-- minus = formatters[fmt](shrink*dimenfactors[unit],unit)
-- minus = " minus " .. (strip and lpegmatch(stripper,minus) or minus)
-- else
-- minus = ""
-- end
-- local str = formatters[fmt](getfield(d,"width")*dimenfactors[unit],unit)
-- return (strip and lpegmatch(stripper,str) or str) .. plus .. minus
-- end
--
-- local function numbertodimen(d,unit,fmt,strip)
-- if not d then
-- local str = formatters[fmt](0,unit)
-- return strip and lpegmatch(stripper,str) or str
-- end
-- local t = type(d)
-- if t == 'string' then
-- return d
-- elseif t == "number" then
-- if unit == true then
-- unit = "pt"
-- fmt = "%0.5f%s"
-- else
-- unit = unit or 'pt'
-- if not fmt then
-- fmt = "%s%s"
-- elseif fmt == true then
-- fmt = "%0.5f%s"
-- end
-- end
-- local str = formatters[fmt](d*dimenfactors[unit],unit)
-- return strip and lpegmatch(stripper,str) or str
-- else
-- return nodetodimen(d,unit,fmt,strip) -- real node
-- end
-- end
local f_f_f = formatters["%0.5Fpt plus %0.5F%s minus %0.5F%s"]
local f_f_m = formatters["%0.5Fpt plus %0.5F%s minus %0.5Fpt"]
local f_p_f = formatters["%0.5Fpt plus %0.5Fpt minus %0.5F%s"]
local f_p_m = formatters["%0.5Fpt plus %0.5Fpt minus %0.5Fpt"]
local f_f_z = formatters["%0.5Fpt plus %0.5F%s"]
local f_p_z = formatters["%0.5Fpt plus %0.5Fpt"]
local f_z_f = formatters["%0.5Fpt minus %0.5F%s"]
local f_z_m = formatters["%0.5Fpt minus %0.5Fpt"]
local f_z_z = formatters["%0.5Fpt"]
local tonut = nodes.tonut
local getfield = nodes.nuts.getfield
local function nodetodimen(n)
n = tonut(n)
local id = getid(n)
if id == kern_code then
local width = getfield(n,"width")
if width == 0 then
return "0pt"
else
return f_z_z(width)
end
end
if id == glue_code then
n = getfield(n,"spec")
end
if not n or not getid(n) == gluespec_code then
return "0pt"
end
local stretch_order = getfield(n,"stretch_order")
local shrink_order = getfield(n,"shrink_order")
local stretch = getfield(n,"stretch") / 65536
local shrink = getfield(n,"shrink") / 65536
local width = getfield(n,"width") / 65536
if stretch_order ~= 0 then
if shrink_order ~= 0 then
return f_f_f(width,stretch,fillorders[stretch_order],shrink,fillorders[shrink_order])
elseif shrink ~= 0 then
return f_f_m(width,stretch,fillorders[stretch_order],shrink)
else
return f_f_z(width,stretch,fillorders[stretch_order])
end
elseif shrink_order ~= 0 then
if stretch ~= 0 then
return f_p_f(width,stretch,shrink,fillorders[shrink_order])
else
return f_z_f(width,shrink,fillorders[shrink_order])
end
elseif stretch ~= 0 then
if shrink ~= 0 then
return f_p_m(width,stretch,shrink)
else
return f_p_z(width,stretch)
end
elseif shrink ~= 0 then
return f_z_m(width,shrink)
elseif width == 0 then
return "0pt"
else
return f_z_z(width)
end
end
-- number.todimen(123)
-- number.todimen(123,"cm")
-- number.todimen(123,false,"%F))
local f_pt = formatters["%p"]
local f_un = formatters["%F%s"]
dimenfactors[""] = dimenfactors.pt
local function numbertodimen(d,unit,fmt)
if not d or d == 0 then
if not unit or unit == "pt" then
return "0pt"
elseif fmt then
return formatters[fmt](0,unit)
else
return 0 .. unit
end
elseif fmt then
if not unit then
unit = "pt"
end
return formatters[fmt](d*dimenfactors[unit],unit)
elseif not unit or unit == "pt" then
return f_pt(d)
else
return f_un(d*dimenfactors[unit],unit)
end
end
number.todimen = numbertodimen
nodes .todimen = nodetodimen
function number.topoints (n,fmt) return numbertodimen(n,"pt",fmt) end
function number.toinches (n,fmt) return numbertodimen(n,"in",fmt) end
function number.tocentimeters (n,fmt) return numbertodimen(n,"cm",fmt) end
function number.tomillimeters (n,fmt) return numbertodimen(n,"mm",fmt) end
function number.toscaledpoints(n,fmt) return numbertodimen(n,"sp",fmt) end
function number.toscaledpoints(n) return n .. "sp" end
function number.tobasepoints (n,fmt) return numbertodimen(n,"bp",fmt) end
function number.topicas (n,fmt) return numbertodimen(n "pc",fmt) end
function number.todidots (n,fmt) return numbertodimen(n,"dd",fmt) end
function number.tociceros (n,fmt) return numbertodimen(n,"cc",fmt) end
function number.tonewdidots (n,fmt) return numbertodimen(n,"nd",fmt) end
function number.tonewciceros (n,fmt) return numbertodimen(n,"nc",fmt) end
function nodes.topoints (n,fmt) return nodetodimen(n,"pt",fmt) end
function nodes.toinches (n,fmt) return nodetodimen(n,"in",fmt) end
function nodes.tocentimeters (n,fmt) return nodetodimen(n,"cm",fmt) end
function nodes.tomillimeters (n,fmt) return nodetodimen(n,"mm",fmt) end
function nodes.toscaledpoints(n,fmt) return nodetodimen(n,"sp",fmt) end
function nodes.toscaledpoints(n) return n .. "sp" end
function nodes.tobasepoints (n,fmt) return nodetodimen(n,"bp",fmt) end
function nodes.topicas (n,fmt) return nodetodimen(n "pc",fmt) end
function nodes.todidots (n,fmt) return nodetodimen(n,"dd",fmt) end
function nodes.tociceros (n,fmt) return nodetodimen(n,"cc",fmt) end
function nodes.tonewdidots (n,fmt) return nodetodimen(n,"nd",fmt) end
function nodes.tonewciceros (n,fmt) return nodetodimen(n,"nc",fmt) end
-- stop redefinition
local points = function(n)
if not n or n == 0 then
return "0pt"
elseif type(n) == "number" then
return lpegmatch(stripper,format("%.5fpt",n*ptfactor)) -- faster than formatter
else
return numbertodimen(n,"pt") -- also deals with nodes
end
end
local basepoints = function(n)
if not n or n == 0 then
return "0bp"
elseif type(n) == "number" then
return lpegmatch(stripper,format("%.5fbp",n*bpfactor)) -- faster than formatter
else
return numbertodimen(n,"bp") -- also deals with nodes
end
end
local pts = function(n)
if not n or n == 0 then
return "0pt"
elseif type(n) == "number" then
return format("%.5fpt",n*ptfactor) -- faster than formatter
else
return numbertodimen(n,"pt") -- also deals with nodes
end
end
local nopts = function(n)
if not n or n == 0 then
return "0"
else
return format("%.5f",n*ptfactor) -- faster than formatter
end
end
number.points = points
number.basepoints = basepoints
number.pts = pts
number.nopts = nopts
nodes.points = function(n) return numbertodimen(n,"pt") end
nodes.basepoints = function(n) return numbertodimen(n,"bp") end
nodes.pts = function(n) return numbertodimen(n,"pt") end
nodes.nopts = function(n) return format("%.5f",n*ptfactor) end
local colors = { }
tracers.colors = colors
local unsetvalue = attributes.unsetvalue
local a_color = attributes.private('color')
local a_colormodel = attributes.private('colormodel')
local m_color = attributes.list[a_color] or { }
function colors.set(n,c,s)
local mc = m_color[c]
local nn = tonut(n)
if mc then
local mm = s or texgetattribute(a_colormodel)
setattr(nn,a_colormodel,mm <= 0 and mm or 1)
setattr(nn,a_color,mc)
else
setattr(nn,a_color,unsetvalue)
end
return n
end
function colors.setlist(n,c,s)
local nn = tonut(n)
local mc = m_color[c] or unsetvalue
local mm = s or texgetattribute(a_colormodel)
if mm <= 0 then
mm = 1
end
while nn do
setattr(nn,a_colormodel,mm)
setattr(nn,a_color,mc)
nn = getnext(nn)
end
return n
end
function colors.reset(n)
setattr(tonut(n),a_color,unsetvalue)
return n
end
-- maybe
local transparencies = { }
tracers.transparencies = transparencies
local a_transparency = attributes.private('transparency')
local m_transparency = attributes.list[a_transparency] or { }
function transparencies.set(n,t)
setattr(tonut(n),a_transparency,m_transparency[t] or unsetvalue)
return n
end
function transparencies.setlist(n,c,s)
local nn = tonut(n)
local mt = m_transparency[c] or unsetvalue
while nn do
setattr(nn,a_transparency,mt)
nn = getnext(nn)
end
return n
end
function transparencies.reset(n)
setattr(n,a_transparency,unsetvalue)
return n
end
-- for the moment here
local visualizers = nodes.visualizers or { }
nodes.visualizers = visualizers
function visualizers.handler(head)
return head, false
end
-- we could cache attribute lists and set attr (copy will increment count) .. todo ..
-- although tracers are used seldom
local function setproperties(n,c,s)
local nn = tonut(n)
local mm = texgetattribute(a_colormodel)
setattr(nn,a_colormodel,mm > 0 and mm or 1)
setattr(nn,a_color,m_color[c])
setattr(nn,a_transparency,m_transparency[c])
return n
end
tracers.setproperties = setproperties
function tracers.setlist(n,c,s)
local nn = tonut(n)
local mc = m_color[c]
local mt = m_transparency[c]
local mm = texgetattribute(a_colormodel)
if mm <= 0 then
mm = 1
end
while nn do
setattr(nn,a_colormodel,mm)
setattr(nn,a_color,mc)
setattr(nn,a_transparency,mt)
nn = getnext(nn)
end
return n
end
function tracers.resetproperties(n)
local nn = tonut(n)
setattr(nn,a_color,unsetvalue)
setattr(nn,a_transparency,unsetvalue)
return n
end
-- this one returns a nut
local nodestracerpool = { }
local nutstracerpool = { }
tracers.pool = {
nodes = nodestracerpool,
nuts = nutstracerpool,
}
table.setmetatableindex(nodestracerpool,function(t,k,v)
local f = nutstracerpool[k]
local v = function(...)
return tonode(f(...))
end
t[k] = v
return v
end)
function nutstracerpool.rule(w,h,d,c,s) -- so some day we can consider using literals (speedup)
return setproperties(new_rule(w,h,d),c,s)
end
tracers.rule = nodestracerpool.rule -- for a while
-- local function show(head,n,message)
-- print("START",message or "")
-- local i = 0
-- for current in traverse(head) do
-- local prev = getprev(current)
-- local next = getnext(current)
-- i = i + 1
-- print(i, prev and nodecodes[getid(prev)],nodecodes[getid(current)],next and nodecodes[getid(next)])
-- if i == n then
-- break
-- end
-- end
-- print("STOP", message or "")
-- end
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