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if not modules then modules = { } end modules ['node-shp'] = {
version = 1.001,
optimize = true,
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"
}
local next, type = next, type
local format = string.format
local setmetatableindex = table.setmetatableindex
local nodes = nodes
local tasks = nodes.tasks
local handlers = nodes.handlers
local nodecodes = nodes.nodecodes
local hlist_code = nodecodes.hlist
local vlist_code = nodecodes.vlist
local nuts = nodes.nuts
local tonut = nuts.tonut
local nextnode = nuts.traversers.node
local getlist = nuts.getlist
local getbox = nuts.getbox
local implement = interfaces.implement
local v_yes = interfaces.variables.yes
local actions = tasks.actions("shipouts")
handlers.finalizelist = actions
function handlers.finalizebox(box)
actions(getbox(box)) -- nut
end
function handlers.finalizelist(list) -- beware of export: block it if needed
actions(list) -- nut
end
do
local flattendiscretionaries = nuts.flattendiscretionaries
local softenhyphens = nuts.softenhyphens
local report = logs.reporter("shipout")
local trace = false trackers.register("backend.cleanup", function(v) trace = v end)
local flatten = true -- also done as line option
local soften = true -- true by default
nodes.handlers.cleanuppage = function(head)
-- local count = 0
local found = 0
local replaced = 0
if flatten then
head, count = flattendiscretionaries(head,true) -- nested
end
if soften then
head, found, replaced = softenhyphens(head) -- could have been a lua loop
end
if trace then
report("%i discretionaries flattened, %i of %i discretionary hyphens softened",count,replaced,found)
end
return head
end
implement {
name = "setsofthyphens",
arguments = "string",
actions = function(v)
soften = v == v_yes
end
}
end
-- interface
implement {
name = "finalizebox",
arguments = "integer",
actions = handlers.finalizebox,
}
-- just in case we want to optimize lookups:
local frequencies = { }
nodes.tracers.frequencies = frequencies
local data = { }
local done = false
setmetatableindex(data,function(t,k)
local v = { }
setmetatableindex(v,function(t,k)
local v = { }
t[k] = v
setmetatableindex(v,function(t,k)
t[k] = 0
return 0
end)
return v
end)
t[k] = v
return v
end)
local function count(head,data,subcategory)
-- no components, pre, post, replace .. can maybe an option .. but
-- we use this for optimization so it makes sense to look the the
-- main node only
for n, id in nextnode, tonut(head) do
local dn = data[nodecodes[id]] -- we could use id and then later convert to nodecodes
dn[subcategory] = dn[subcategory] + 1
if id == hlist_code or id == vlist_code then
count(getlist(n),data,subcategory)
end
end
end
local function register(category,subcategory)
return function(head)
done = true
count(head,data[category],subcategory)
return head, false
end
end
frequencies.register = register
frequencies.filename = nil
trackers.register("nodes.frequencies",function(v)
if type(v) == "string" then
frequencies.filename = v
end
handlers.frequencies_shipouts_before = register("shipouts", "begin")
handlers.frequencies_shipouts_after = register("shipouts", "end")
handlers.frequencies_processors_before = register("processors", "begin")
handlers.frequencies_processors_after = register("processors", "end")
tasks.prependaction("shipouts", "before", "nodes.handlers.frequencies_shipouts_before")
tasks.appendaction ("shipouts", "after", "nodes.handlers.frequencies_shipouts_after")
tasks.prependaction("processors", "before", "nodes.handlers.frequencies_processors_before")
tasks.appendaction ("processors", "after", "nodes.handlers.frequencies_processors_after")
end)
statistics.register("node frequencies", function()
if done then
local filename = frequencies.filename or (tex.jobname .. "-frequencies.lua")
io.savedata(filename,table.serialize(data,true))
return format("saved in %q",filename)
end
end)
do -- for the moment:
local whatsitcodes = nodes.whatsitcodes
local whatsit_code = nodecodes.whatsit
local removables = {
[whatsitcodes.open] = true,
[whatsitcodes.close] = true,
[whatsitcodes.write] = true,
[whatsitcodes.savepos] = true,
[whatsitcodes.latelua] = true,
}
local setlist = nuts.setlist
local getlist = nuts.getlist
local remove = nuts.remove
local function cleanup(head)
for current, id, subtype in nextnode, head do
if id == whatsit_code then
if removables[subtype] then
head = remove(head,current,true)
end
elseif id == hlist_code or id == vlist_code then
local sl = getlist(current)
if sl then
local rl = cleanup(sl)
if rl ~= sl then
setlist(current,rl)
end
end
end
end
return head
end
function handlers.cleanupbox(box)
cleanup(getbox(box))
end
implement {
name = "cleanupbox",
public = true,
protected = true,
actions = handlers.cleanupbox,
arguments = "integerargument"
}
end
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