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if not modules then modules = { } end modules ['luatex-fonts-nod'] = {
version = 1.001,
comment = "companion to luatex-fonts.lua",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
if context then
os.exit()
end
-- Don't depend on code here as it is only needed to complement the font handler
-- code. I will move some to another namespace as I don't see other macro packages
-- use the context logic. It's a subset anyway.
-- Attributes:
if tex.attribute[0] ~= 0 then
texio.write_nl("log","!")
texio.write_nl("log","! Attribute 0 is reserved for ConTeXt's font feature management and has to be")
texio.write_nl("log","! set to zero. Also, some attributes in the range 1-255 are used for special")
texio.write_nl("log","! purposes so setting them at the TeX end might break the font handler.")
texio.write_nl("log","!")
tex.attribute[0] = 0 -- else no features
end
attributes = attributes or { }
attributes.unsetvalue = -0x7FFFFFFF
local numbers, last = { }, 127
attributes.private = attributes.private or function(name)
local number = numbers[name]
if not number then
if last < 255 then
last = last + 1
end
number = last
numbers[name] = number
end
return number
end
-- Nodes (a subset of context so that we don't get too much unused code):
nodes = { }
nodes.handlers = { }
local nodecodes = { }
local glyphcodes = node.subtypes("glyph")
local disccodes = node.subtypes("disc")
for k, v in next, node.types() do
v = string.gsub(v,"_","")
nodecodes[k] = v
nodecodes[v] = k
end
for k, v in next, glyphcodes do
glyphcodes[v] = k
end
for k, v in next, disccodes do
disccodes[v] = k
end
nodes.nodecodes = nodecodes
nodes.glyphcodes = glyphcodes
nodes.disccodes = disccodes
nodes.handlers.protectglyphs = node.protect_glyphs -- beware: nodes!
nodes.handlers.unprotectglyphs = node.unprotect_glyphs -- beware: nodes!
-- These are now gone in generic as they are context specific.
-- local flush_node = node.flush_node
-- local remove_node = node.remove
-- local traverse_id = node.traverse_id
--
-- function nodes.remove(head, current, free_too)
-- local t = current
-- head, current = remove_node(head,current)
-- if t then
-- if free_too then
-- flush_node(t)
-- t = nil
-- else
-- t.next, t.prev = nil, nil
-- end
-- end
-- return head, current, t
-- end
--
-- function nodes.delete(head,current)
-- return nodes.remove(head,current,true)
-- end
----- getfield = node.getfield
----- setfield = node.setfield
-----.getfield = getfield
-----.setfield = setfield
-----.getattr = getfield
-----.setattr = setfield
-----.tostring = node.tostring or tostring
-----.copy = node.copy
-----.copy_node = node.copy
-----.copy_list = node.copy_list
-----.delete = node.delete
-----.dimensions = node.dimensions
-----.end_of_math = node.end_of_math
-----.flush_list = node.flush_list
-----.flush_node = node.flush_node
-----.flush = node.flush_node
-----.free = node.free
-----.insert_after = node.insert_after
-----.insert_before = node.insert_before
-----.hpack = node.hpack
-----.new = node.new
-----.tail = node.tail
-----.traverse = node.traverse
-----.traverse_id = node.traverse_id
-----.slide = node.slide
-----.vpack = node.vpack
-----.first_glyph = node.first_glyph
-----.has_glyph = node.has_glyph or node.first_glyph
-----.current_attr = node.current_attr
-----.has_field = node.has_field
-----.usedlist = node.usedlist
-----.protrusion_skippable = node.protrusion_skippable
-----.write = node.write
-----.has_attribute = node.has_attribute
-----.set_attribute = node.set_attribute
-----.unset_attribute = node.unset_attribute
-----.protect_glyphs = node.protect_glyphs
-----.unprotect_glyphs = node.unprotect_glyphs
-----.mlist_to_hlist = node.mlist_to_hlist
-- in generic code, at least for some time, we stay nodes, while in context
-- we can go nuts (e.g. experimental); this split permits us us keep code
-- used elsewhere stable but at the same time play around in context
-- much of this will go away .. it's part of the context interface and not
-- officially in luatex-*.lua
local direct = node.direct
local nuts = { }
nodes.nuts = nuts
local tonode = direct.tonode
local tonut = direct.todirect
nodes.tonode = tonode
nodes.tonut = tonut
nuts.tonode = tonode
nuts.tonut = tonut
nuts.getattr = direct.get_attribute
nuts.getboth = direct.getboth
nuts.getchar = direct.getchar
nuts.getcomponents = direct.getcomponents
----.getdepth = direct.getdepth
----.getdir = direct.getdir
nuts.getdirection = direct.getdirection
nuts.getdisc = direct.getdisc
nuts.getfield = direct.getfield
nuts.getfont = direct.getfont
----.getheight = direct.getheight
nuts.getid = direct.getid
nuts.getkern = direct.getkern
----.getleader = direct.getleader
nuts.getlist = direct.getlist
nuts.getnext = direct.getnext
nuts.getoffsets = direct.getoffsets
nuts.getprev = direct.getprev
nuts.getsubtype = direct.getsubtype
nuts.getwidth = direct.getwidth
nuts.setattr = direct.setfield
nuts.setboth = direct.setboth
nuts.setchar = direct.setchar
nuts.setcomponents = direct.setcomponents
----.setdepth = direct.setdepth
----.setdir = direct.setdir
nuts.setdirection = direct.setdirection
nuts.setdisc = direct.setdisc
nuts.setfield = setfield
----.setfont = direct.setfont
----.setheight = direct.setheight
nuts.setkern = direct.setkern
----.setleader = direct.setleader
nuts.setlink = direct.setlink
nuts.setlist = direct.setlist
nuts.setnext = direct.setnext
nuts.setoffsets = direct.setoffsets
nuts.setprev = direct.setprev
nuts.setsplit = direct.setsplit
nuts.setsubtype = direct.setsubtype
nuts.setwidth = direct.setwidth
nuts.getglyphdata = nuts.getattr
nuts.setglyphdata = nuts.setattr
nuts.ischar = direct.is_char
nuts.isglyph = direct.is_glyph
nuts.copy = direct.copy
nuts.copy_list = direct.copy_list
nuts.copy_node = direct.copy
nuts.delete = direct.delete
nuts.end_of_math = direct.end_of_math
nuts.flush = direct.flush
nuts.flush_list = direct.flush_list
nuts.flush_node = direct.flush_node
nuts.free = direct.free
nuts.insert_after = direct.insert_after
nuts.insert_before = direct.insert_before
nuts.is_node = direct.is_node
nuts.kerning = direct.kerning
nuts.ligaturing = direct.ligaturing
nuts.new = direct.new
nuts.remove = direct.remove
nuts.tail = direct.tail
nuts.traverse = direct.traverse
nuts.traverse_char = direct.traverse_char
nuts.traverse_glyph = direct.traverse_glyph
nuts.traverse_id = direct.traverse_id
-- properties as used in the (new) injector:
local propertydata = direct.get_properties_table()
nodes.properties = { data = propertydata }
if direct.set_properties_mode then
direct.set_properties_mode(true,true)
function direct.set_properties_mode() end
end
nuts.getprop = function(n,k)
local p = propertydata[n]
if p then
return p[k]
end
end
nuts.setprop = function(n,k,v)
if v then
local p = propertydata[n]
if p then
p[k] = v
else
propertydata[n] = { [k] = v }
end
end
end
nodes.setprop = nodes.setproperty
nodes.getprop = nodes.getproperty
-- a few helpers (we need to keep 'm in sync with context) .. some day components
-- might go so here we isolate them
local setprev = nuts.setprev
local setnext = nuts.setnext
local getnext = nuts.getnext
local setlink = nuts.setlink
local getfield = nuts.getfield
local setfield = nuts.setfield
local getcomponents = nuts.getcomponents
local setcomponents = nuts.setcomponents
local find_tail = nuts.tail
local flush_list = nuts.flush_list
local flush_node = nuts.flush_node
local traverse_id = nuts.traverse_id
local copy_node = nuts.copy_node
local glyph_code = nodes.nodecodes.glyph
function nuts.copy_no_components(g,copyinjection)
local components = getcomponents(g)
if components then
setcomponents(g)
local n = copy_node(g)
if copyinjection then
copyinjection(n,g)
end
setcomponents(g,components)
-- maybe also upgrade the subtype but we don't use it anyway
return n
else
local n = copy_node(g)
if copyinjection then
copyinjection(n,g)
end
return n
end
end
function nuts.copy_only_glyphs(current)
local head = nil
local previous = nil
for n in traverse_id(glyph_code,current) do
n = copy_node(n)
if head then
setlink(previous,n)
else
head = n
end
previous = n
end
return head
end
nuts.uses_font = direct.uses_font
do
-- another poor mans substitute ... i will move these to a more protected
-- namespace .. experimental hack
local dummy = tonut(node.new("glyph"))
nuts.traversers = {
glyph = nuts.traverse_id(nodecodes.glyph,dummy),
glue = nuts.traverse_id(nodecodes.glue,dummy),
disc = nuts.traverse_id(nodecodes.disc,dummy),
boundary = nuts.traverse_id(nodecodes.boundary,dummy),
char = nuts.traverse_char(dummy),
node = nuts.traverse(dummy),
}
end
|
