2 -- luatexja/jfmglue.lua
4 luatexbase.provides_module({
5 name = 'luatexja.jfmglue',
8 description = 'Insertion process of JFM glues and kanjiskip',
10 module('luatexja.jfmglue', package.seeall)
11 local err, warn, info, log = luatexbase.errwarinf(_NAME)
14 luatexja.load_module('base'); local ltjb = luatexja.base
15 luatexja.load_module('stack'); local ltjs = luatexja.stack
16 luatexja.load_module('jfont'); local ltjf = luatexja.jfont
17 luatexja.load_module('pretreat'); local ltjp = luatexja.pretreat
19 local has_attr = node.has_attribute
20 local set_attr = node.set_attribute
21 local round = tex.round
22 local uniq_id = 0 -- unique id
24 local id_glyph = node.id('glyph')
25 local id_hlist = node.id('hlist')
26 local id_vlist = node.id('vlist')
27 local id_rule = node.id('rule')
28 local id_ins = node.id('ins')
29 local id_mark = node.id('mark')
30 local id_adjust = node.id('adjust')
31 local id_disc = node.id('disc')
32 local id_whatsit = node.id('whatsit')
33 local id_math = node.id('math')
34 local id_glue = node.id('glue')
35 local id_kern = node.id('kern')
36 local id_penalty = node.id('penalty')
38 local id_glue_spec = node.id('glue_spec')
39 local id_jglyph = node.id('glyph') + 256 -- Japanese character
40 local id_box_like = node.id('hlist') + 256 -- vbox, shifted hbox
41 local id_pbox = node.id('hlist') + 512 -- already processed nodes (by \unhbox)
42 local id_pbox_w = node.id('hlist') + 513 -- cluster which consists of a whatsit
43 local sid_user = node.subtype('user_defined')
45 local sid_start_link = node.subtype('pdf_start_link')
46 local sid_start_thread = node.subtype('pdf_start_thread')
47 local sid_end_link = node.subtype('pdf_end_link')
48 local sid_end_thread = node.subtype('pdf_end_thread')
58 local IC_PROCESSED = 9
64 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
65 local attr_orig_char = luatexbase.attributes['ltj@origchar']
66 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
67 local attr_icflag = luatexbase.attributes['ltj@icflag']
68 local attr_autospc = luatexbase.attributes['ltj@autospc']
69 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
70 local attr_uniqid = luatexbase.attributes['ltj@uniqid']
71 local max_dimen = 1073741823
74 local par_indented -- is the paragraph indented?
76 -------------------- Helper functions
78 local function copy_attr(new, old)
82 -- This function is called only for acquiring `special' characters.
83 local function fast_find_char_class(c,m)
84 return m.chars[c] or 0
87 local spec_zero_glue = node.new(id_glue_spec)
88 spec_zero_glue.width = 0; spec_zero_glue.stretch_order = 0; spec_zero_glue.stretch = 0
89 spec_zero_glue.shrink_order = 0; spec_zero_glue.shrink = 0
91 local function get_zero_spec()
92 return node.copy(spec_zero_glue)
95 local function skip_table_to_spec(n)
96 local g = node.new(id_glue_spec)
97 local st = ltjs.get_skip_table(n, box_stack_level)
98 g.width = st.width; g.stretch = st.stretch; g.shrink = st.shrink
99 g.stretch_order = st.stretch_order; g.shrink_order = st.shrink_order
104 local function add_penalty(p,e)
105 if p.penalty>=10000 then
106 if e<=-10000 then p.penalty = 0 end
107 elseif p.penalty<=-10000 then
108 if e>=10000 then p.penalty = 0 end
110 p.penalty = p.penalty + e
111 if p.penalty>=10000 then p.penalty = 10000
112 elseif p.penalty<=-10000 then p.penalty = -10000 end
118 diffmet_rule = math.two_average
119 function math.two_add(a,b) return a+b end
120 function math.two_average(a,b) return (a+b)*0.5 end
122 -------------------- idea
123 -- 2 node の間に glue/kern/penalty を挿入する.
124 -- 基本方針: char node q と char node p の間
127 -- first: 最初の node,nuc: p,last: 最後の node
130 -- 実際の glue は Np.last, Nq.first の間に挿入される
131 -- Bp: Np.last, Nq.first の間の penalty node 達の配列
133 -- Np, Nq, Bp, widow_Bp について
135 -- 1回のループごとに Nq = Np, Np = (new table) となるのは効率が悪いので,
136 -- Np <-> Nq 入れ替え,その後 Np をクリアすることでテーブルを再利用.
137 -- 同様の関係は Bp, widow_Bp にも.
141 -- node x が non-char node のときは,x のみ
142 -- x が char_node のときは,
143 -- - x が \accent の第二引数だったとき
144 -- [kern2 kern y kern2] x の 3 node が核に加わる
145 -- - x の直後に \/ 由来 kern があったとき
146 -- その \/ 由来の kern が核に加わる
148 -- ins, mark, adjust, whatsit, penalty
150 -- Nq.last .. + .. Bp.first .... Bp[last] .... * .. Np.first
151 -- +: kern from LINEEND はここに入る
152 -- *: jfm glue はここに入る
154 local head -- the head of current list
155 local last -- the last node of current list
156 local lp -- 外側での list 走査時のカーソル
159 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
161 local ihb_flag -- JFM グルー挿入抑止用 flag
162 -- on: \inhibitglue 指定時,hlist の周囲
164 -------------------- hlist 内の文字の検索
166 local first_char, last_char, find_first_char
168 local function check_box(box_ptr, box_end)
169 local p = box_ptr; local found_visible_node = false
171 find_first_char = false; first_char = nil; last_char = nil
174 while p and p~=box_end do
178 p = node.next(node.next(node.next(p))); pid = p.id
179 elseif has_attr(p, attr_icflag)==IC_PROCESSED then
180 p = node.next(p); pid = p.id
183 if pid==id_glyph then
185 if find_first_char then
186 first_char = p; find_first_char = false
188 last_char = p; found_visible_node = true; p=node.next(p)
189 if (not p) or p==box_end then return found_visible_node end
193 if pid==id_hlist then
194 if has_attr(p, attr_icflag)==PACKED then
195 for q in node.traverse_id(id_glyph, p.head) do
196 if find_first_char then
197 first_char = q; find_first_char = false
199 last_char = q; found_visible_node = true; break
203 if check_box(p.head, nil) then found_visible_node = true end
204 else if find_first_char then
205 find_first_char = false
211 elseif not (pid==id_ins or pid==id_mark
212 or pid==id_adjust or pid==id_whatsit
213 or pid==id_penalty) then
214 found_visible_node = true
215 if find_first_char then
216 find_first_char = false
223 return found_visible_node
226 function check_box_high(Nx, box_ptr, box_end)
227 first_char = nil; last_char = nil; find_first_char = true
228 if check_box(box_ptr, box_end) then
230 if first_char.font == has_attr(first_char, attr_curjfnt) then
231 set_np_xspc_jachar(Nx, first_char)
233 set_np_xspc_alchar(Nx, first_char.char,first_char, ligature_head)
240 -------------------- Np の計算と情報取得
242 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
243 function (Np, lp, Nq, box_stack_level)
244 if Np.nuc then return Np
246 return Np -- your code
249 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
250 function (stat, Nq, Np, box_stack_level) return false end)
253 local function set_attr_icflag_processed(p)
254 if (has_attr(p, attr_icflag) or 0)<= ITALIC then
255 set_attr(p, attr_uniqid, uniq_id)
256 set_attr(p, attr_icflag, PROCESSED)
260 local function check_next_ickern()
261 if lp.id == id_kern and has_attr(lp, attr_icflag)==ITALIC then
262 set_attr(lp, attr_icflag, IC_PROCESSED)
263 set_attr(lp, attr_uniqid, uniq_id)
264 Np.last = lp; lp = node.next(lp)
265 else Np.last = Np.nuc end
268 local function calc_np_pbox()
269 local uid = has_attr(lp, attr_uniqid)
270 Np.first = Np.first or lp; Np.id = id_pbox
271 lpa = KINSOKU -- dummy=
272 while lp~=last and lpa>=PACKED and lpa~=BOXBDD
273 and has_attr(lp, attr_uniqid) == uid do
274 Np.nuc = lp; set_attr(lp, attr_uniqid, uniq_id)
275 lp = node.next(lp); lpa = has_attr(lp, attr_icflag) or 0
277 return check_next_ickern()
281 local calc_np_auxtable = {
282 [id_glyph] = function()
283 Np.first = Np.first or lp
284 if lp.font == has_attr(lp, attr_curjfnt) then
289 Np.nuc = lp; set_attr_icflag_processed(lp)
290 lp = node.next(lp); check_next_ickern(); return true
292 [id_hlist] = function()
293 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
294 set_attr_icflag_processed(lp)
300 lp = node.next(lp); return true
302 [id_vlist] = function()
303 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
304 Np.id = id_box_like; set_attr_icflag_processed(lp);
305 lp = node.next(lp); return true
307 [id_rule] = function()
308 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
309 Np.id = id_box_like; set_attr_icflag_processed(lp);
310 lp = node.next(lp); return true
312 [id_ins] = function()
313 set_attr_icflag_processed(lp); lp = node.next(lp)
316 [id_mark] = function()
317 set_attr_icflag_processed(lp); lp = node.next(lp)
320 [id_adjust] = function()
321 set_attr_icflag_processed(lp); lp = node.next(lp)
324 [id_disc] = function()
325 Np.first = Np.first or lp;
326 Np.nuc = lp; set_attr_icflag_processed(lp);
327 Np.last = lp; Np.id = id_disc; lp = node.next(lp); return true
329 [id_whatsit] = function()
330 if lp.subtype==sid_user then
331 if lp.user_id==30111 then
332 local lq = node.next(lp)
333 head = node.remove(head, lp); node.free(lp); lp = lq; ihb_flag = true
335 set_attr_icflag_processed(lp)
336 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo"
337 , Np, lp, Nq, box_stack_level)
340 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc; return true
344 -- we do special treatment for these whatsit nodes.
345 if lp.subtype == sid_start_link or lp.subtype == sid_start_thread then
347 elseif lp.subtype == sid_end_link or lp.subtype == sid_end_thread then
348 Nq.last = lp; Np.first = nil
350 set_attr_icflag_processed(lp); lp = node.next(lp)
354 [id_math] = function()
355 Np.first = Np.first or lp; Np.nuc = lp;
356 set_attr_icflag_processed(lp); lp = node.next(lp)
357 while lp.id~=id_math do
358 set_attr_icflag_processed(lp); lp = node.next(lp)
360 set_attr_icflag_processed(lp);
361 Np.last = lp; Np.id = id_math; lp = node.next(lp);
364 [id_glue] = function()
365 Np.first = Np.first or lp; Np.nuc = lp; set_attr_icflag_processed(lp);
366 Np.last = lp; Np.id = id_glue; lp = node.next(lp); return true
368 [id_kern] = function()
369 Np.first = Np.first or lp
370 if lp.subtype==2 then
371 set_attr_icflag_processed(lp); lp = node.next(lp)
372 set_attr_icflag_processed(lp); lp = node.next(lp)
373 set_attr_icflag_processed(lp); lp = node.next(lp)
374 set_attr_icflag_processed(lp); Np.nuc = lp
375 if lp.font == has_attr(lp, attr_curjfnt) then
380 lp = node.next(lp); check_next_ickern();
382 Np.id = id_kern; set_attr_icflag_processed(lp);
383 Np.last = lp; lp = node.next(lp)
387 [id_penalty] = function()
388 Bp[#Bp+1] = lp; set_attr_icflag_processed(lp);
389 lp = node.next(lp); return false
392 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
393 Np.id = id_box_like; set_attr_icflag_processed(lp);
394 lp = node.next(lp); return true
398 local function calc_np()
399 -- We assume lp = node.next(Np.last)
401 for k in pairs(Nr) do Nr[k] = nil end; Nq = Np; Np = Nr
402 for k in pairs(Bp) do Bp[k] = nil end
405 local lpa = has_attr(lp, attr_icflag) or 0
407 if lpa == BOXBDD then
408 local lq = node.next(lp)
409 head = node.remove(head, lp); node.free(lp); lp = lq
410 else calc_np_pbox(); return
412 elseif calc_np_auxtable[lp.id]() then return end
420 -- extract informations from Np
421 -- We think that "Np is a Japanese character" if Np.met~=nil,
422 -- "Np is an alphabetic character" if Np.pre~=nil,
423 -- "Np is not a character" otherwise.
426 function set_np_xspc_jachar(Nx, x)
427 local z = ltjf.font_metric_table[x.font]
428 local c = has_attr(x, attr_orig_char) or 0
429 local cls = ltjf.find_char_class(x.char, z) or 0
430 if cls==0 and c ~= x.char then cls = ltjf.find_char_class(-c, z) end
431 local m = ltjf.metrics[z.jfm]
432 set_attr(x, attr_jchar_class, cls)
438 Nx.pre = ltjs.get_penalty_table('pre', c, 0, box_stack_level)
439 Nx.post = ltjs.get_penalty_table('post', c, 0, box_stack_level)
440 z = fast_find_char_class('lineend', m)
441 local y = m.size_cache[Nx.size].char_type[Nx.class]
442 Nx.lend = y.kern[z] or 0
443 y = ltjs.get_penalty_table('xsp', c, 3, box_stack_level)
444 Nx.xspc_before = (y%2==1)
445 Nx.xspc_after = (y>=2)
446 Nx.auto_kspc = (has_attr(x, attr_autospc)==1)
447 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
451 local ligature_head = 1
452 local ligature_tail = 2
453 function set_np_xspc_alchar(Nx, c,x, lig)
455 if lig == ligature_head then
456 while x.components and x.subtype and math.floor(x.subtype*0.5)%2==1 do
457 x = x.components; c = x.char
460 while x.components and x.subtype and math.floor(x.subtype*0.5)%2==1 do
461 x = node.tail(x.components); c = x.char
464 Nx.pre = ltjs.get_penalty_table('pre', c, 0, box_stack_level)
465 Nx.post = ltjs.get_penalty_table('post', c, 0, box_stack_level)
468 Nx.pre = 0; Nx.post = 0; Nx.char = -1
471 local y = ltjs.get_penalty_table('xsp', c, 3, box_stack_level)
472 Nx.xspc_before = (y%2==1)
473 Nx.xspc_after = (y>=2)
474 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
478 local function extract_np()
479 local x, i = Np.nuc, Np.id;
480 if i == id_jglyph then return set_np_xspc_jachar(Np, x)
481 elseif i == id_glyph then return set_np_xspc_alchar(Np, x.char, x, ligature_head)
482 elseif i == id_hlist then Np.last_char = check_box_high(Np, x.head, nil)
483 elseif i == id_pbox then Np.last_char = check_box_high(Np, Np.first, node.next(Np.last))
484 elseif i == id_disc then Np.last_char = check_box_high(Np, x.replace, nil)
485 elseif i == id_math then return set_np_xspc_alchar(Np, -1, x)
489 -- change the information for the next loop
490 -- (will be done if Nx is an alphabetic character or a hlist)
491 function after_hlist(Nx)
493 if Nx.last_char.font == has_attr(Nx.last_char, attr_curjfnt) then
494 set_np_xspc_jachar(Nx, Nx.last_char);
496 set_np_xspc_alchar(Nx, Nx.last_char.char,Nx.last_char, ligature_tail)
499 Nx.pre = nil; Nx.met = nil
503 local function after_alchar(Nx)
505 return set_np_xspc_alchar(Nx, x.char,x, ligature_tail)
509 -------------------- 最下層の処理
511 local function lineend_fix(g)
512 if g and g.id==id_kern then
514 elseif Nq.lend~=0 then
516 g = node.new(id_kern); copy_attr(g, Nq.nuc);
517 g.subtype = 1; g.kern = -Nq.lend;
518 set_attr(g, attr_icflag, LINEEND)
519 set_attr(g, attr_uniqid, uniq_id)
520 elseif g.id==id_kern then
521 g.kern = g.kern - Nq.lend
523 g.spec.width = g.spec.width - Nq.lend
529 -- change penalties (or create a new penalty, if needed)
530 local function handle_penalty_normal(post, pre, g)
531 local a = (pre or 0) + (post or 0)
533 if (a~=0 and not(g and g.id==id_kern)) or Nq.lend~=0 then
534 local p = node.new(id_penalty); copy_attr(p, Nq.nuc)
535 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
537 head = node.insert_before(head, Np.first, p)
539 set_attr(p, attr_icflag, KINSOKU)
540 set_attr(p, attr_uniqid, uniq_id)
542 else for i, v in pairs(Bp) do add_penalty(v,a) end
546 local function handle_penalty_always(post, pre, g)
547 local a = (pre or 0) + (post or 0)
549 if not (g and g.id==id_glue) or Nq.lend~=0 then
550 local p = node.new(id_penalty); copy_attr(p, Nq.nuc)
551 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
553 head = node.insert_before(head, Np.first, p)
555 set_attr(p, attr_icflag, KINSOKU)
556 set_attr(p, attr_uniqid, uniq_id)
558 else for i, v in pairs(Bp) do add_penalty(v,a) end
562 local function handle_penalty_suppress(post, pre, g)
563 local a = (pre or 0) + (post or 0)
565 if g and g.id==id_glue then
566 local p = node.new(id_penalty); copy_attr(p, Nq.nuc)
567 p.penalty = 10000; head = node.insert_before(head, Np.first, p)
569 set_attr(p, attr_icflag, KINSOKU)
570 set_attr(p, attr_uniqid, uniq_id)
572 else for i, v in pairs(Bp) do add_penalty(v,a) end
576 -- 和文文字間の JFM glue を node 化
577 local function new_jfm_glue(Nn, bc, ac)
578 -- bc, ac: char classes
580 local z = Nn.met.size_cache[Nn.size].char_type[bc]
582 local h = node.new(id_glue_spec)
583 h.width = z.glue[ac][1]
584 h.stretch = z.glue[ac][2]
585 h.shrink = z.glue[ac][3]
586 h.stretch_order=0; h.shrink_order=0
587 g = node.new(id_glue); copy_attr(g, Nn.nuc)
588 g.subtype = 0; g.spec = h
589 set_attr(g, attr_icflag, FROM_JFM); set_attr(g, attr_uniqid, uniq_id)
590 elseif z.kern[ac] then
591 g = node.new(id_kern); copy_attr(g, Nn.nuc)
592 g.subtype = 1; g.kern = z.kern[ac]
593 set_attr(g, attr_icflag, FROM_JFM); set_attr(g, attr_uniqid, uniq_id)
598 -- Nq.last (kern w) .... (glue/kern g) Np.first
599 local function real_insert(w, g)
601 local h = node.new(id_kern); copy_attr(h, Nq.nuc)
602 set_attr(h, attr_icflag, LINE_END)
603 set_attr(h, attr_uniqid, uniq_id)
604 h.kern = w; h.subtype = 1
605 head = node.insert_after(head, Nq.last, h)
608 head = node.insert_before(head, Np.first, g)
613 -------------------- 和文文字間空白量の決定
616 local function get_kanji_skip_from_jfm(Nn)
617 local i = Nn.met.size_cache[Nn.size].kanjiskip
619 return { i[1], i[2], i[3] }
623 local function get_kanjiskip()
624 local g = node.new(id_glue); copy_attr(g, Nq.nuc)
625 if Np.auto_kspc or Nq.auto_kspc then
626 if kanji_skip.width == max_dimen then
627 local gx = node.new(id_glue_spec);
628 gx.stretch_order = 0; gx.shrink_order = 0
629 local bk = get_kanji_skip_from_jfm(Nq)
631 if (Np.met==Nq.met) and (Nq.size==Np.size) and (Nq.var==Np.var) then
634 ak = get_kanji_skip_from_jfm(Np)
638 gx.width = round(diffmet_rule(bk[1], ak[1]))
639 gx.stretch = round(diffmet_rule(bk[2], ak[2]))
640 gx.shrink = -round(diffmet_rule(-bk[3], -ak[3]))
642 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
645 gx.width = ak[1]; gx.stretch = ak[2]; gx.shrink = ak[3]
646 else node.free(gx); gx = get_zero_spec() -- fallback
649 else g.spec=node.copy(kanji_skip); node.free(gx) end
651 g.spec = get_zero_spec(); node.free(gx)
653 set_attr(g, attr_icflag, KANJI_SKIP)
654 set_attr(g, attr_uniqid, uniq_id)
658 local function calc_ja_ja_aux(gb,ga)
662 if not ga then return gb end
663 local k = node.type(gb.id) .. node.type(ga.id)
664 if k == 'glueglue' then
666 gb.spec.width = round(diffmet_rule(gb.spec.width, ga.spec.width))
667 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch,ga.spec.shrink))
668 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, -ga.spec.shrink))
671 elseif k == 'kernkern' then
673 gb.kern = round(diffmet_rule(gb.kern, ga.kern))
676 elseif k == 'kernglue' then
677 -- gb: kern, ga: glue
678 ga.spec.width = round(diffmet_rule(gb.kern,ga.spec.width))
679 ga.spec.stretch = round(diffmet_rule(ga.spec.stretch, 0))
680 ga.spec.shrink = -round(diffmet_rule(-ga.spec.shrink, 0))
684 -- gb: glue, ga: kern
685 gb.spec.width = round(diffmet_rule(ga.kern, gb.spec.width))
686 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch, 0))
687 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, 0))
694 local function calc_ja_ja_glue()
695 if ihb_flag then return nil
696 elseif (Nq.size==Np.size) and (Nq.met==Np.met) and (Nq.var==Np.var) then
697 return new_jfm_glue(Nq, Nq.class, Np.class)
699 return calc_ja_ja_aux(new_jfm_glue(Nq, Nq.class, fast_find_char_class('diffmet',Nq.met)),
700 new_jfm_glue(Np, fast_find_char_class('diffmet',Np.met), Np.class))
704 -------------------- 和欧文間空白量の決定
707 local function get_xkanji_skip_from_jfm(Nn)
708 local i = Nn.met.size_cache[Nn.size].xkanjiskip
710 return i and { i[1], i[2], i[3] }
714 local function get_xkanjiskip(Nn)
715 local g = node.new(id_glue); copy_attr(g, Nn.nuc)
716 if Nq.xspc_after and Np.xspc_before and (Nq.auto_xspc or Np.auto_xspc) then
717 if xkanji_skip.width == max_dimen then
718 local gx = node.new(id_glue_spec);
719 gx.stretch_order = 0; gx.shrink_order = 0
720 local bk = get_xkanji_skip_from_jfm(Nn)
722 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
723 else node.free(gx); gx = get_zero_spec() -- fallback
726 else g.spec=node.copy(xkanji_skip) end
728 g.spec = get_zero_spec()
730 set_attr(g, attr_icflag, XKANJI_SKIP)
731 set_attr(g, attr_uniqid, uniq_id)
736 -------------------- 隣接した「塊」間の処理
738 local function get_OA_skip()
740 return new_jfm_glue(Np, fast_find_char_class(((Nq.id == id_math and -1) or 'jcharbdd'), Np.met), Np.class)
744 local function get_OB_skip()
746 return new_jfm_glue(Nq, Nq.class, fast_find_char_class(((Np.id == id_math and -1) or'jcharbdd'), Nq.met))
751 -- (anything) .. jachar
752 local function handle_np_jachar()
753 if Nq.id==id_jglyph or ((Nq.id==id_pbox or Nq.id==id_pbox_w) and Nq.met) then
754 local g = lineend_fix(calc_ja_ja_glue() or get_kanjiskip()) -- M->K
755 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
756 elseif Nq.met then -- Nq.id==id_hlist
757 local g = get_OA_skip() or get_kanjiskip() -- O_A->K
758 handle_penalty_normal(0, Np.pre, g); real_insert(0, g)
760 local g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
761 if Nq.id==id_hlist then Nq.post = 0 end
762 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
764 local g = get_OA_skip() -- O_A
765 if Nq.id==id_glue then handle_penalty_normal(0, Np.pre, g)
766 elseif Nq.id==id_kern then handle_penalty_suppress(0, Np.pre, g)
767 else handle_penalty_always(0, Np.pre, g)
771 -- \jcharwidowpenalty 挿入予定箇所更新
772 if mode and ltjs.get_penalty_table('kcat', Np.char, 0, box_stack_level)%2~=1 then
773 widow_Np.first = Np.first;
774 local Bpr = widow_Bp; widow_Bp = Bp; Bp = Bpr
778 -- jachar .. (anything)
779 local function handle_nq_jachar()
781 if Np.id==id_hlist then Np.pre = 0 end
782 local g = lineend_fix(get_OB_skip() or get_xkanjiskip(Nq)) -- O_B->X
783 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
785 local g = lineend_fix(get_OB_skip()) -- O_B
786 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
787 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
788 else handle_penalty_always(Nq.post, 0, g)
790 real_insert(Nq.lend, g)
794 -- (anything) .. (和文文字で始まる hlist)
795 local function handle_np_ja_hlist()
796 if Nq.id==id_jglyph or ((Nq.id==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
797 local g = lineend_fix(get_OB_skip() or get_kanjiskip()) -- O_B->K
798 handle_penalty_normal(Nq.post, 0, g); real_insert(Nq.lend, g)
799 elseif Nq.met then -- Nq.id==id_hlist
800 local g = get_kanjiskip() -- K
801 handle_penalty_suppress(0, 0, g); real_insert(0, g)
803 local g = get_xkanjiskip(Np) -- X
804 handle_penalty_suppress(0, 0, g); real_insert(0, g)
808 -- (和文文字で終わる hlist) .. (anything)
809 local function handle_nq_ja_hlist()
811 local g = get_xkanjiskip(Nq) -- X
812 handle_penalty_suppress(0, 0, g); real_insert(0, g)
816 -- Nq が前側のクラスタとなることによる修正
817 local function adjust_nq()
818 if Nq.id==id_glyph then after_alchar(Nq)
819 elseif Nq.id==id_hlist or Nq.id==id_pbox or Nq.id==id_disc then after_hlist(Nq)
820 elseif Nq.id == id_pbox_w then
821 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
822 false, Nq, Np, box_stack_level)
826 -------------------- 開始・終了時の処理
829 local function handle_list_tail()
832 -- the current list is to be line-breaked:
833 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
835 g = node.new(id_kern); g.subtype = 0; g.kern = Np.lend
836 copy_attr(g, Np.nuc); set_attr(g, attr_icflag, BOXBDD)
837 node.insert_after(head, Np.last, g)
840 -- Insert \jcharwidowpenalty
841 Bp = widow_Bp; Np = widow_Np; Nq.lend = 0
843 handle_penalty_normal(0,
844 ltjs.get_penalty_table('jwp', 0, 0, box_stack_level))
847 -- the current list is the contents of a hbox
848 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
849 local g = new_jfm_glue(Np, Np.class, fast_find_char_class('boxbdd',Np.met))
851 set_attr(g, attr_icflag, BOXBDD)
852 head = node.insert_after(head, Np.last, g)
859 local function handle_list_head()
860 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
864 g = new_jfm_glue(Np, fast_find_char_class('parbdd',Np.met), Np.class)
866 g = new_jfm_glue(Np, fast_find_char_class('boxbdd',Np.met), Np.class)
869 set_attr(g, attr_icflag, BOXBDD)
870 if g.id==id_glue and #Bp==0 then
871 local h = node.new(id_penalty); copy_attr(h, Np.nuc)
872 h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD)
874 head = node.insert_before(head, Np.first, g)
881 local function init_var()
883 if uniq_id == 0x7FFFFFF then uniq_id = 0 end
884 lp = head; Bp = {}; widow_Bp = {}; widow_Np = {first = nil}
886 box_stack_level = ltjp.box_stack_level
887 kanji_skip=skip_table_to_spec('kanjiskip')
888 xkanji_skip=skip_table_to_spec('xkanjiskip')
890 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
891 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
892 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
895 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
896 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
897 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
900 -- the current list is to be line-breaked:
901 -- hbox from \parindent is skipped.
902 while lp and ((lp.id==id_whatsit and lp.subtype~=sid_user)
903 or ((lp.id==id_hlist) and (lp.subtype==3))) do
904 if (lp.id==id_hlist) and (lp.subtype==3) then par_indented = true end
908 -- the current list is the contents of a hbox:
909 -- insert a sentinelEG
910 last=node.tail(head); local g = node.new(id_kern)
911 node.insert_after(head, last, g); last = g
915 local function cleanup()
916 -- adjust attr_icflag for avoiding error
917 tex.attribute[attr_icflag] = -(0x7FFFFFFF)
918 node.free(kanji_skip); node.free(xkanji_skip)
920 local h = node.next(head)
921 if h.id == id_penalty and h.penalty == 10000 then
923 if h.id == id_glue and h.subtype == 15 and not h.next then
929 head = node.remove(head, last); node.free(last);-- remove the sentinel
933 -------------------- 外部から呼ばれる関数
936 function main(ahead, amode)
937 if not ahead then return ahead end
938 head = ahead; mode = amode; init_var(); calc_np()
940 extract_np(); handle_list_head()
946 extract_np(); adjust_nq()
948 if Np.id == id_jglyph then
951 if Np.id==id_hlist then handle_np_ja_hlist()
952 else handle_np_jachar() end
954 if Nq.id==id_hlist then handle_nq_ja_hlist()
955 else handle_nq_jachar() end
965 function create_inhibitglue_node()
966 local tn = node.new(id_whatsit, sid_user)
967 tn.user_id=30111; tn.type=100; tn.value=1
971 -- Node for indicating beginning of a paragraph
973 function create_beginpar_node()
974 local tn = node.new(id_whatsit, sid_user)
975 tn.user_id=30114; tn.type=100; tn.value=1
979 local function whatsit_callback(Np, lp, Nq, bsl)
980 if Np and Np.nuc then return Np
981 elseif Np and lp.user_id == 30114 then
982 Np.first = lp; Np.nuc = lp; Np.last = lp
985 Np.pre = 0; Np.post = 0
986 Np.xspc_before = false
987 Np.xspc_after = false
992 local function whatsit_after_callback(s, Nq, Np, bsl)
993 if not s and Nq.nuc.user_id == 30114 then
994 local x, y = node.prev(Nq.nuc), Nq.nuc
995 Nq.first, Nq.nuc, Nq.last = x, x, x
996 head = node.remove(head, y)
1001 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1002 "luatexja.beginpar.np_info", 1)
1003 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1004 "luatexja.beginpar.np_info_after", 1)