Current File : //proc/self/root/data/old/usr/share/texlive/texmf-dist/tex/luatex/luaotfload/otfl-font-ota.lua
if not modules then modules = { } end modules ['font-ota'] = {
version = 1.001,
comment = "companion to font-otf.lua (analysing)",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- this might become scrp-*.lua
local type, tostring, match, format, concat = type, tostring, string.match, string.format, table.concat
if not trackers then trackers = { register = function() end } end
local trace_analyzing = false trackers.register("otf.analyzing", function(v) trace_analyzing = v end)
local trace_cjk = false trackers.register("cjk.injections", function(v) trace_cjk = v end)
trackers.register("cjk.analyzing","otf.analyzing")
fonts = fonts or { }
fonts.analyzers = fonts.analyzers or { }
fonts.analyzers.initializers = fonts.analyzers.initializers or { node = { otf = { } } }
fonts.analyzers.methods = fonts.analyzers.methods or { node = { otf = { } } }
local otf = fonts.otf
local tfm = fonts.tfm
local initializers = fonts.analyzers.initializers
local methods = fonts.analyzers.methods
local glyph = node.id('glyph')
local glue = node.id('glue')
local penalty = node.id('penalty')
local set_attribute = node.set_attribute
local has_attribute = node.has_attribute
local traverse_id = node.traverse_id
local traverse_node_list = node.traverse
local fontdata = fonts.ids
local state = attributes.private('state')
local fcs = (fonts.color and fonts.color.set) or function() end
local fcr = (fonts.color and fonts.color.reset) or function() end
local a_to_script = otf.a_to_script
local a_to_language = otf.a_to_language
-- in the future we will use language/script attributes instead of the
-- font related value, but then we also need dynamic features which is
-- somewhat slower; and .. we need a chain of them
function fonts.initializers.node.otf.analyze(tfmdata,value,attr)
local script, language
if attr and attr > 0 then
script, language = a_to_script[attr], a_to_language[attr]
else
script, language = tfmdata.script, tfmdata.language
end
local action = initializers[script]
if action then
if type(action) == "function" then
return action(tfmdata,value)
else
local action = action[language]
if action then
return action(tfmdata,value)
end
end
end
return nil
end
function fonts.methods.node.otf.analyze(head,font,attr)
local tfmdata = fontdata[font]
local script, language
if attr and attr > 0 then
script, language = a_to_script[attr], a_to_language[attr]
else
script, language = tfmdata.script, tfmdata.language
end
local action = methods[script]
if action then
if type(action) == "function" then
return action(head,font,attr)
else
action = action[language]
if action then
return action(head,font,attr)
end
end
end
return head, false
end
otf.features.register("analyze",true) -- we always analyze
table.insert(fonts.triggers,"analyze") -- we need a proper function for doing this
-- latin
fonts.analyzers.methods.latn = fonts.analyzers.aux.setstate
-- this info eventually will go into char-def
local zwnj = 0x200C
local zwj = 0x200D
local isol = {
[0x0600] = true, [0x0601] = true, [0x0602] = true, [0x0603] = true,
[0x0608] = true, [0x060B] = true, [0x0621] = true, [0x0674] = true,
[0x06DD] = true, [zwnj] = true,
}
local isol_fina = {
[0x0622] = true, [0x0623] = true, [0x0624] = true, [0x0625] = true,
[0x0627] = true, [0x0629] = true, [0x062F] = true, [0x0630] = true,
[0x0631] = true, [0x0632] = true, [0x0648] = true, [0x0671] = true,
[0x0672] = true, [0x0673] = true, [0x0675] = true, [0x0676] = true,
[0x0677] = true, [0x0688] = true, [0x0689] = true, [0x068A] = true,
[0x068B] = true, [0x068C] = true, [0x068D] = true, [0x068E] = true,
[0x068F] = true, [0x0690] = true, [0x0691] = true, [0x0692] = true,
[0x0693] = true, [0x0694] = true, [0x0695] = true, [0x0696] = true,
[0x0697] = true, [0x0698] = true, [0x0699] = true, [0x06C0] = true,
[0x06C3] = true, [0x06C4] = true, [0x06C5] = true, [0x06C6] = true,
[0x06C7] = true, [0x06C8] = true, [0x06C9] = true, [0x06CA] = true,
[0x06CB] = true, [0x06CD] = true, [0x06CF] = true, [0x06D2] = true,
[0x06D3] = true, [0x06D5] = true, [0x06EE] = true, [0x06EF] = true,
[0x0759] = true, [0x075A] = true, [0x075B] = true, [0x076B] = true,
[0x076C] = true, [0x0771] = true, [0x0773] = true, [0x0774] = true,
[0x0778] = true, [0x0779] = true, [0xFEF5] = true, [0xFEF7] = true,
[0xFEF9] = true, [0xFEFB] = true,
}
local isol_fina_medi_init = {
[0x0626] = true, [0x0628] = true, [0x062A] = true, [0x062B] = true,
[0x062C] = true, [0x062D] = true, [0x062E] = true, [0x0633] = true,
[0x0634] = true, [0x0635] = true, [0x0636] = true, [0x0637] = true,
[0x0638] = true, [0x0639] = true, [0x063A] = true, [0x063B] = true,
[0x063C] = true, [0x063D] = true, [0x063E] = true, [0x063F] = true,
[0x0640] = true, [0x0641] = true, [0x0642] = true, [0x0643] = true,
[0x0644] = true, [0x0645] = true, [0x0646] = true, [0x0647] = true,
[0x0649] = true, [0x064A] = true, [0x066E] = true, [0x066F] = true,
[0x0678] = true, [0x0679] = true, [0x067A] = true, [0x067B] = true,
[0x067C] = true, [0x067D] = true, [0x067E] = true, [0x067F] = true,
[0x0680] = true, [0x0681] = true, [0x0682] = true, [0x0683] = true,
[0x0684] = true, [0x0685] = true, [0x0686] = true, [0x0687] = true,
[0x069A] = true, [0x069B] = true, [0x069C] = true, [0x069D] = true,
[0x069E] = true, [0x069F] = true, [0x06A0] = true, [0x06A1] = true,
[0x06A2] = true, [0x06A3] = true, [0x06A4] = true, [0x06A5] = true,
[0x06A6] = true, [0x06A7] = true, [0x06A8] = true, [0x06A9] = true,
[0x06AA] = true, [0x06AB] = true, [0x06AC] = true, [0x06AD] = true,
[0x06AE] = true, [0x06AF] = true, [0x06B0] = true, [0x06B1] = true,
[0x06B2] = true, [0x06B3] = true, [0x06B4] = true, [0x06B5] = true,
[0x06B6] = true, [0x06B7] = true, [0x06B8] = true, [0x06B9] = true,
[0x06BA] = true, [0x06BB] = true, [0x06BC] = true, [0x06BD] = true,
[0x06BE] = true, [0x06BF] = true, [0x06C1] = true, [0x06C2] = true,
[0x06CC] = true, [0x06CE] = true, [0x06D0] = true, [0x06D1] = true,
[0x06FA] = true, [0x06FB] = true, [0x06FC] = true, [0x06FF] = true,
[0x0750] = true, [0x0751] = true, [0x0752] = true, [0x0753] = true,
[0x0754] = true, [0x0755] = true, [0x0756] = true, [0x0757] = true,
[0x0758] = true, [0x075C] = true, [0x075D] = true, [0x075E] = true,
[0x075F] = true, [0x0760] = true, [0x0761] = true, [0x0762] = true,
[0x0763] = true, [0x0764] = true, [0x0765] = true, [0x0766] = true,
[0x0767] = true, [0x0768] = true, [0x0769] = true, [0x076A] = true,
[0x076D] = true, [0x076E] = true, [0x076F] = true, [0x0770] = true,
[0x0772] = true, [0x0775] = true, [0x0776] = true, [0x0777] = true,
[0x077A] = true, [0x077B] = true, [0x077C] = true, [0x077D] = true,
[0x077E] = true, [0x077F] = true, [zwj] = true,
}
local arab_warned = { }
-- todo: gref
local function warning(current,what)
local char = current.char
if not arab_warned[char] then
log.report("analyze","arab: character %s (U+%04X) has no %s class", char, char, what)
arab_warned[char] = true
end
end
function fonts.analyzers.methods.nocolor(head,font,attr)
for n in traverse_node_list(head,glyph) do
if not font or n.font == font then
fcr(n)
end
end
return head, true
end
local function finish(first,last)
if last then
if first == last then
local fc = first.char
if isol_fina_medi_init[fc] or isol_fina[fc] then
set_attribute(first,state,4) -- isol
if trace_analyzing then fcs(first,"font:isol") end
else
warning(first,"isol")
set_attribute(first,state,0) -- error
if trace_analyzing then fcr(first) end
end
else
local lc = last.char
if isol_fina_medi_init[lc] or isol_fina[lc] then -- why isol here ?
-- if laststate == 1 or laststate == 2 or laststate == 4 then
set_attribute(last,state,3) -- fina
if trace_analyzing then fcs(last,"font:fina") end
else
warning(last,"fina")
set_attribute(last,state,0) -- error
if trace_analyzing then fcr(last) end
end
end
first, last = nil, nil
elseif first then
-- first and last are either both set so we never com here
local fc = first.char
if isol_fina_medi_init[fc] or isol_fina[fc] then
set_attribute(first,state,4) -- isol
if trace_analyzing then fcs(first,"font:isol") end
else
warning(first,"isol")
set_attribute(first,state,0) -- error
if trace_analyzing then fcr(first) end
end
first = nil
end
return first, last
end
function fonts.analyzers.methods.arab(head,font,attr) -- maybe make a special version with no trace
local tfmdata = fontdata[font]
local marks = tfmdata.marks
local first, last, current, done = nil, nil, head, false
while current do
if current.id == glyph and current.subtype<256 and current.font == font and not has_attribute(current,state) then
done = true
local char = current.char
if marks[char] then
set_attribute(current,state,5) -- mark
if trace_analyzing then fcs(current,"font:mark") end
elseif isol[char] then -- can be zwj or zwnj too
first, last = finish(first,last)
set_attribute(current,state,4) -- isol
if trace_analyzing then fcs(current,"font:isol") end
first, last = nil, nil
elseif not first then
if isol_fina_medi_init[char] then
set_attribute(current,state,1) -- init
if trace_analyzing then fcs(current,"font:init") end
first, last = first or current, current
elseif isol_fina[char] then
set_attribute(current,state,4) -- isol
if trace_analyzing then fcs(current,"font:isol") end
first, last = nil, nil
else -- no arab
first, last = finish(first,last)
end
elseif isol_fina_medi_init[char] then
first, last = first or current, current
set_attribute(current,state,2) -- medi
if trace_analyzing then fcs(current,"font:medi") end
elseif isol_fina[char] then
if not has_attribute(last,state,1) then
-- tricky, we need to check what last may be !
set_attribute(last,state,2) -- medi
if trace_analyzing then fcs(last,"font:medi") end
end
set_attribute(current,state,3) -- fina
if trace_analyzing then fcs(current,"font:fina") end
first, last = nil, nil
elseif char >= 0x0600 and char <= 0x06FF then
if trace_analyzing then fcs(current,"font:rest") end
first, last = finish(first,last)
else --no
first, last = finish(first,last)
end
else
first, last = finish(first,last)
end
current = current.next
end
first, last = finish(first,last)
return head, done
end
Mini Shell