--
--- luatexja/pretreat.lua
+-- luatexja/ltj-pretreat.lua
--
-luatexbase.provides_module({
- name = 'luatexja.pretreat',
- date = '2012/07/19',
- version = '0.2',
- description = '',
-})
-module('luatexja.pretreat', package.seeall)
-local err, warn, info, log = luatexbase.errwarinf(_NAME)
luatexja.load_module('charrange'); local ltjc = luatexja.charrange
-luatexja.load_module('jfont'); local ltjf = luatexja.jfont
luatexja.load_module('stack'); local ltjs = luatexja.stack
+luatexja.load_module('jfont'); local ltjf = luatexja.jfont
+
+local Dnode = node.direct or node
+local nullfunc = function(n) return n end
+local to_node = (Dnode ~= node) and Dnode.tonode or nullfunc
+local to_direct = (Dnode ~= node) and Dnode.todirect or nullfunc
+
+local setfield = (Dnode ~= node) and Dnode.setfield or function(n, i, c) n[i] = c end
+local getid = (Dnode ~= node) and Dnode.getid or function(n) return n.id end
+local getfont = (Dnode ~= node) and Dnode.getfont or function(n) return n.font end
+local getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
+local getfield = (Dnode ~= node) and Dnode.getfield or function(n, i) return n[i] end
+local getsubtype = (Dnode ~= node) and Dnode.getsubtype or function(n) return n.subtype end
+
+local pairs = pairs
local floor = math.floor
-local has_attr = node.has_attribute
-local set_attr = node.set_attribute
-local node_traverse = node.traverse
-local node_type = node.type
-local node_remove = node.remove
-local node_next = node.next
-local node_free = node.free
+local has_attr = Dnode.has_attribute
+local set_attr = Dnode.set_attribute
+local node_traverse = Dnode.traverse
+local node_remove =luatexja.Dnode_remove -- Dnode.remove
+local node_next = Dnode.getnext
+local node_free = Dnode.free
+local node_end_of_math = Dnode.end_of_math
local tex_getcount = tex.getcount
local id_glyph = node.id('glyph')
local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
local attr_icflag = luatexbase.attributes['ltj@icflag']
-local ltjf_font_metric_table = ltjf.font_metric_table
-local ltjc_is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char
+local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
+local ltjf_replace_altfont = ltjf.replace_altfont
local attr_orig_char = luatexbase.attributes['ltj@origchar']
+local STCK = luatexja.userid_table.STCK
------------------------------------------------------------------------
-- MAIN PROCESS STEP 1: replace fonts
------------------------------------------------------------------------
local wt
+do
+ local head
-local function suppress_hyphenate_ja(head)
- local non_math, p = true, head
- wt = {}
- while p do
- if p.id == id_glyph then
- if (has_attr(p, attr_icflag) or 0)<=0 and ltjc_is_ucs_in_japanese_char(p) then
- p.font = has_attr(p, attr_curjfnt) or p.font
- p.subtype = floor(p.subtype*0.5)*2
- set_attr(p, attr_orig_char, p.char)
- end
- elseif p.id == id_math then
- p = node_next(p) -- skip math on
- while p and p.id~=id_math do p = node_next(p) end
- elseif p.id == id_whatsit and p.subtype==sid_user and p.user_id==30112 then
+ local suppress_hyphenate_ja_aux = {}
+ suppress_hyphenate_ja_aux[id_glyph] = function(p)
+ if (has_attr(p, attr_icflag) or 0)<=0 and is_ucs_in_japanese_char(p) then
+ local pc = getchar(p)
+ local pf = ltjf_replace_altfont(has_attr(p, attr_curjfnt) or getfont(p), pc)
+ setfield(p, 'font', pf); set_attr(p, attr_curjfnt, pf)
+ setfield(p, 'subtype', floor(getsubtype(p)*0.5)*2)
+ set_attr(p, attr_orig_char, pc)
+ end
+ return p
+ end
+ suppress_hyphenate_ja_aux[id_math] = function(p) return node_end_of_math(node_next(p)) end
+ suppress_hyphenate_ja_aux[id_whatsit] = function(p)
+ if getsubtype(p)==sid_user and getfield(p, 'user_id')==STCK then
wt[#wt+1] = p; head = node_remove(head, p)
end
- p = node_next(p)
+ return p
end
- lang.hyphenate(head)
- return head
+
+ local function suppress_hyphenate_ja (h)
+ local p = to_direct(h)
+ wt, head = {}, p
+ while p do
+ local pfunc = suppress_hyphenate_ja_aux[getid(p)]
+ if pfunc then p = pfunc(p) end
+ p = node_next(p)
+ end
+ head = to_node(head)
+ lang.hyphenate(head)
+ return head
+ end
+
+ luatexbase.add_to_callback('hyphenate',
+ function (head,tail)
+ return suppress_hyphenate_ja(head)
+ end,'ltj.hyphenate')
end
-- mode: true iff this function is called from hpack_filter
-function set_box_stack_level(head, mode)
+local function set_box_stack_level(head, mode)
local box_set, cl = 0, tex.currentgrouplevel + 1
for _,p in pairs(wt) do
- if mode and p.value==cl then box_set = 1 end; node_free(p)
+ if mode and getfield(p, 'value')==cl then box_set = 1 end; node_free(p)
end
ltjs.report_stack_level(tex_getcount('ltj@@stack') + box_set)
return head
function (head)
return set_box_stack_level(head, false)
end,'ltj.pre_linebreak_filter_pre',1)
-luatexbase.add_to_callback('hyphenate',
- function (head,tail)
- return suppress_hyphenate_ja(head)
- end,'ltj.hyphenate')
+
+luatexja.pretreat = {
+ set_box_stack_level = set_box_stack_level,
+}
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