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.size_cache.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
290 set_attr(lp, attr_uniqid, uniq_id)
291 --set_attr_icflag_processed(lp) treated in ltj-setwidth.lua
292 lp = node.next(lp); check_next_ickern(); return true
294 [id_hlist] = function()
295 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
296 set_attr_icflag_processed(lp)
302 lp = node.next(lp); return true
304 [id_vlist] = function()
305 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
306 Np.id = id_box_like; set_attr_icflag_processed(lp);
307 lp = node.next(lp); return true
309 [id_rule] = function()
310 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
311 Np.id = id_box_like; set_attr_icflag_processed(lp);
312 lp = node.next(lp); return true
314 [id_ins] = function()
315 set_attr_icflag_processed(lp); lp = node.next(lp)
318 [id_mark] = function()
319 set_attr_icflag_processed(lp); lp = node.next(lp)
322 [id_adjust] = function()
323 set_attr_icflag_processed(lp); lp = node.next(lp)
326 [id_disc] = function()
327 Np.first = Np.first or lp;
328 Np.nuc = lp; set_attr_icflag_processed(lp);
329 Np.last = lp; Np.id = id_disc; lp = node.next(lp); return true
331 [id_whatsit] = function()
332 if lp.subtype==sid_user then
333 if lp.user_id==30111 then
334 local lq = node.next(lp)
335 head = node.remove(head, lp); node.free(lp); lp = lq; ihb_flag = true
337 set_attr_icflag_processed(lp)
338 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo"
339 , Np, lp, Nq, box_stack_level)
342 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc; return true
346 -- we do special treatment for these whatsit nodes.
347 if lp.subtype == sid_start_link or lp.subtype == sid_start_thread then
349 elseif lp.subtype == sid_end_link or lp.subtype == sid_end_thread then
350 Nq.last = lp; Np.first = nil
352 set_attr_icflag_processed(lp); lp = node.next(lp)
356 [id_math] = function()
357 Np.first = Np.first or lp; Np.nuc = lp;
358 set_attr_icflag_processed(lp); lp = node.next(lp)
359 while lp.id~=id_math do
360 set_attr_icflag_processed(lp); lp = node.next(lp)
362 set_attr_icflag_processed(lp);
363 Np.last = lp; Np.id = id_math; lp = node.next(lp);
366 [id_glue] = function()
367 Np.first = Np.first or lp; Np.nuc = lp; set_attr_icflag_processed(lp);
368 Np.last = lp; Np.id = id_glue; lp = node.next(lp); return true
370 [id_kern] = function()
371 Np.first = Np.first or lp
372 if lp.subtype==2 then
373 set_attr_icflag_processed(lp); lp = node.next(lp)
374 set_attr_icflag_processed(lp); lp = node.next(lp)
375 set_attr_icflag_processed(lp); lp = node.next(lp)
376 set_attr_icflag_processed(lp); Np.nuc = lp
377 if lp.font == has_attr(lp, attr_curjfnt) then
382 lp = node.next(lp); check_next_ickern();
384 Np.id = id_kern; set_attr_icflag_processed(lp);
385 Np.last = lp; lp = node.next(lp)
389 [id_penalty] = function()
390 Bp[#Bp+1] = lp; set_attr_icflag_processed(lp);
391 lp = node.next(lp); return false
394 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
395 Np.id = id_box_like; set_attr_icflag_processed(lp);
396 lp = node.next(lp); return true
400 local function calc_np()
401 -- We assume lp = node.next(Np.last)
403 for k in pairs(Nr) do Nr[k] = nil end; Nq = Np; Np = Nr
404 for k in pairs(Bp) do Bp[k] = nil end
407 local lpa = has_attr(lp, attr_icflag) or 0
409 if lpa == BOXBDD then
410 local lq = node.next(lp)
411 head = node.remove(head, lp); node.free(lp); lp = lq
412 else calc_np_pbox(); return
414 elseif calc_np_auxtable[lp.id]() then return end
422 -- extract informations from Np
423 -- We think that "Np is a Japanese character" if Np.met~=nil,
424 -- "Np is an alphabetic character" if Np.pre~=nil,
425 -- "Np is not a character" otherwise.
428 function set_np_xspc_jachar(Nx, x)
429 local m = ltjf.font_metric_table[x.font]
431 local c = has_attr(x, attr_orig_char) or 0
432 local cls = ltjf.find_char_class(x.char, m) or 0
433 if cls==0 and c ~= x.char then cls = ltjf.find_char_class(-c, m) end
434 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 local z = fast_find_char_class('lineend', m)
441 Nx.lend = m.size_cache.char_type[Nx.class].kern[z] or 0
442 local y = ltjs.get_penalty_table('xsp', c, 3, box_stack_level)
443 Nx.xspc_before = (y%2==1)
444 Nx.xspc_after = (y>=2)
445 Nx.auto_kspc = (has_attr(x, attr_autospc)==1)
446 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
450 local ligature_head = 1
451 local ligature_tail = 2
452 function set_np_xspc_alchar(Nx, c,x, lig)
454 if lig == ligature_head then
455 while x.components and x.subtype and math.floor(x.subtype*0.5)%2==1 do
456 x = x.components; c = x.char
459 while x.components and x.subtype and math.floor(x.subtype*0.5)%2==1 do
460 x = node.tail(x.components); c = x.char
463 Nx.pre = ltjs.get_penalty_table('pre', c, 0, box_stack_level)
464 Nx.post = ltjs.get_penalty_table('post', c, 0, box_stack_level)
467 Nx.pre = 0; Nx.post = 0; Nx.char = -1
470 local y = ltjs.get_penalty_table('xsp', c, 3, box_stack_level)
471 Nx.xspc_before = (y%2==1)
472 Nx.xspc_after = (y>=2)
473 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
477 local function extract_np()
478 local x, i = Np.nuc, Np.id;
479 if i == id_jglyph then return set_np_xspc_jachar(Np, x)
480 elseif i == id_glyph then return set_np_xspc_alchar(Np, x.char, x, ligature_head)
481 elseif i == id_hlist then Np.last_char = check_box_high(Np, x.head, nil)
482 elseif i == id_pbox then Np.last_char = check_box_high(Np, Np.first, node.next(Np.last))
483 elseif i == id_disc then Np.last_char = check_box_high(Np, x.replace, nil)
484 elseif i == id_math then return set_np_xspc_alchar(Np, -1, x)
488 -- change the information for the next loop
489 -- (will be done if Nx is an alphabetic character or a hlist)
490 function after_hlist(Nx)
492 if Nx.last_char.font == has_attr(Nx.last_char, attr_curjfnt) then
493 set_np_xspc_jachar(Nx, Nx.last_char);
495 set_np_xspc_alchar(Nx, Nx.last_char.char,Nx.last_char, ligature_tail)
498 Nx.pre = nil; Nx.met = nil
502 local function after_alchar(Nx)
504 return set_np_xspc_alchar(Nx, x.char,x, ligature_tail)
508 -------------------- 最下層の処理
510 local function lineend_fix(g)
511 if g and g.id==id_kern then
513 elseif Nq.lend~=0 then
515 g = node.new(id_kern); copy_attr(g, Nq.nuc);
516 g.subtype = 1; g.kern = -Nq.lend;
517 set_attr(g, attr_icflag, LINEEND)
518 set_attr(g, attr_uniqid, uniq_id)
519 elseif g.id==id_kern then
520 g.kern = g.kern - Nq.lend
522 g.spec.width = g.spec.width - Nq.lend
528 -- change penalties (or create a new penalty, if needed)
529 local function handle_penalty_normal(post, pre, g)
530 local a = (pre or 0) + (post or 0)
532 if (a~=0 and not(g and g.id==id_kern)) or Nq.lend~=0 then
533 local p = node.new(id_penalty); copy_attr(p, Nq.nuc)
534 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
536 head = node.insert_before(head, Np.first, p)
538 set_attr(p, attr_icflag, KINSOKU)
539 set_attr(p, attr_uniqid, uniq_id)
541 else for i, v in pairs(Bp) do add_penalty(v,a) end
545 local function handle_penalty_always(post, pre, g)
546 local a = (pre or 0) + (post or 0)
548 if not (g and g.id==id_glue) or Nq.lend~=0 then
549 local p = node.new(id_penalty); copy_attr(p, Nq.nuc)
550 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
552 head = node.insert_before(head, Np.first, p)
554 set_attr(p, attr_icflag, KINSOKU)
555 set_attr(p, attr_uniqid, uniq_id)
557 else for i, v in pairs(Bp) do add_penalty(v,a) end
561 local function handle_penalty_suppress(post, pre, g)
562 local a = (pre or 0) + (post or 0)
564 if g and g.id==id_glue then
565 local p = node.new(id_penalty); copy_attr(p, Nq.nuc)
566 p.penalty = 10000; head = node.insert_before(head, Np.first, p)
568 set_attr(p, attr_icflag, KINSOKU)
569 set_attr(p, attr_uniqid, uniq_id)
571 else for i, v in pairs(Bp) do add_penalty(v,a) end
575 -- 和文文字間の JFM glue を node 化
576 local function new_jfm_glue(Nn, bc, ac)
577 -- bc, ac: char classes
579 local z = Nn.met.size_cache.char_type[bc]
581 local h = node.new(id_glue_spec)
582 h.width = z.glue[ac][1]
583 h.stretch = z.glue[ac][2]
584 h.shrink = z.glue[ac][3]
585 h.stretch_order=0; h.shrink_order=0
586 g = node.new(id_glue); copy_attr(g, Nn.nuc)
587 g.subtype = 0; g.spec = h
588 set_attr(g, attr_icflag, FROM_JFM); set_attr(g, attr_uniqid, uniq_id)
589 elseif z.kern[ac] then
590 g = node.new(id_kern); copy_attr(g, Nn.nuc)
591 g.subtype = 1; g.kern = z.kern[ac]
592 set_attr(g, attr_icflag, FROM_JFM); set_attr(g, attr_uniqid, uniq_id)
597 -- Nq.last (kern w) .... (glue/kern g) Np.first
598 local function real_insert(w, g)
600 local h = node.new(id_kern); copy_attr(h, Nq.nuc)
601 set_attr(h, attr_icflag, LINE_END)
602 set_attr(h, attr_uniqid, uniq_id)
603 h.kern = w; h.subtype = 1
604 head = node.insert_after(head, Nq.last, h)
607 head = node.insert_before(head, Np.first, g)
612 -------------------- 和文文字間空白量の決定
615 local function get_kanji_skip_from_jfm(Nn)
616 local i = Nn.met.size_cache.kanjiskip
618 return { i[1], i[2], i[3] }
622 local function get_kanjiskip()
623 local g = node.new(id_glue); copy_attr(g, Nq.nuc)
624 if Np.auto_kspc or Nq.auto_kspc then
625 if kanji_skip.width == max_dimen then
626 local gx = node.new(id_glue_spec);
627 gx.stretch_order = 0; gx.shrink_order = 0
628 local bk = get_kanji_skip_from_jfm(Nq)
630 if (Np.met.size_cache==Nq.met.size_cache) and (Nq.var==Np.var) then
633 ak = get_kanji_skip_from_jfm(Np)
637 gx.width = round(diffmet_rule(bk[1], ak[1]))
638 gx.stretch = round(diffmet_rule(bk[2], ak[2]))
639 gx.shrink = -round(diffmet_rule(-bk[3], -ak[3]))
641 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
644 gx.width = ak[1]; gx.stretch = ak[2]; gx.shrink = ak[3]
645 else node.free(gx); gx = get_zero_spec() -- fallback
648 else g.spec=node.copy(kanji_skip); node.free(gx) end
650 g.spec = get_zero_spec(); node.free(gx)
652 set_attr(g, attr_icflag, KANJI_SKIP)
653 set_attr(g, attr_uniqid, uniq_id)
657 local function calc_ja_ja_aux(gb,ga)
661 if not ga then return gb end
662 local k = node.type(gb.id) .. node.type(ga.id)
663 if k == 'glueglue' then
665 gb.spec.width = round(diffmet_rule(gb.spec.width, ga.spec.width))
666 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch,ga.spec.shrink))
667 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, -ga.spec.shrink))
670 elseif k == 'kernkern' then
672 gb.kern = round(diffmet_rule(gb.kern, ga.kern))
675 elseif k == 'kernglue' then
676 -- gb: kern, ga: glue
677 ga.spec.width = round(diffmet_rule(gb.kern,ga.spec.width))
678 ga.spec.stretch = round(diffmet_rule(ga.spec.stretch, 0))
679 ga.spec.shrink = -round(diffmet_rule(-ga.spec.shrink, 0))
683 -- gb: glue, ga: kern
684 gb.spec.width = round(diffmet_rule(ga.kern, gb.spec.width))
685 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch, 0))
686 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, 0))
693 local function calc_ja_ja_glue()
694 if ihb_flag then return nil
695 elseif (Nq.met.size_cache==Np.met.size_cache) and (Nq.var==Np.var) then
696 return new_jfm_glue(Nq, Nq.class, Np.class)
698 return calc_ja_ja_aux(new_jfm_glue(Nq, Nq.class, fast_find_char_class('diffmet',Nq.met)),
699 new_jfm_glue(Np, fast_find_char_class('diffmet',Np.met), Np.class))
703 -------------------- 和欧文間空白量の決定
706 local function get_xkanji_skip_from_jfm(Nn)
707 local i = Nn.met.size_cache.xkanjiskip
709 return i and { i[1], i[2], i[3] }
713 local function get_xkanjiskip(Nn)
714 local g = node.new(id_glue); copy_attr(g, Nn.nuc)
715 if Nq.xspc_after and Np.xspc_before and (Nq.auto_xspc or Np.auto_xspc) then
716 if xkanji_skip.width == max_dimen then
717 local gx = node.new(id_glue_spec);
718 gx.stretch_order = 0; gx.shrink_order = 0
719 local bk = get_xkanji_skip_from_jfm(Nn)
721 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
722 else node.free(gx); gx = get_zero_spec() -- fallback
725 else g.spec=node.copy(xkanji_skip) end
727 g.spec = get_zero_spec()
729 set_attr(g, attr_icflag, XKANJI_SKIP)
730 set_attr(g, attr_uniqid, uniq_id)
735 -------------------- 隣接した「塊」間の処理
737 local function get_OA_skip()
739 return new_jfm_glue(Np, fast_find_char_class(((Nq.id == id_math and -1) or 'jcharbdd'), Np.met), Np.class)
743 local function get_OB_skip()
745 return new_jfm_glue(Nq, Nq.class, fast_find_char_class(((Np.id == id_math and -1) or'jcharbdd'), Nq.met))
750 -- (anything) .. jachar
751 local function handle_np_jachar()
752 if Nq.id==id_jglyph or ((Nq.id==id_pbox or Nq.id==id_pbox_w) and Nq.met) then
753 local g = lineend_fix(calc_ja_ja_glue() or get_kanjiskip()) -- M->K
754 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
755 elseif Nq.met then -- Nq.id==id_hlist
756 local g = get_OA_skip() or get_kanjiskip() -- O_A->K
757 handle_penalty_normal(0, Np.pre, g); real_insert(0, g)
759 local g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
760 if Nq.id==id_hlist then Nq.post = 0 end
761 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
763 local g = get_OA_skip() -- O_A
764 if Nq.id==id_glue then handle_penalty_normal(0, Np.pre, g)
765 elseif Nq.id==id_kern then handle_penalty_suppress(0, Np.pre, g)
766 else handle_penalty_always(0, Np.pre, g)
770 -- \jcharwidowpenalty 挿入予定箇所更新
771 if mode and ltjs.get_penalty_table('kcat', Np.char, 0, box_stack_level)%2~=1 then
772 widow_Np.first = Np.first;
773 local Bpr = widow_Bp; widow_Bp = Bp; Bp = Bpr
777 -- jachar .. (anything)
778 local function handle_nq_jachar()
780 if Np.id==id_hlist then Np.pre = 0 end
781 local g = lineend_fix(get_OB_skip() or get_xkanjiskip(Nq)) -- O_B->X
782 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
784 local g = lineend_fix(get_OB_skip()) -- O_B
785 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
786 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
787 else handle_penalty_always(Nq.post, 0, g)
789 real_insert(Nq.lend, g)
793 -- (anything) .. (和文文字で始まる hlist)
794 local function handle_np_ja_hlist()
795 if Nq.id==id_jglyph or ((Nq.id==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
796 local g = lineend_fix(get_OB_skip() or get_kanjiskip()) -- O_B->K
797 handle_penalty_normal(Nq.post, 0, g); real_insert(Nq.lend, g)
798 elseif Nq.met then -- Nq.id==id_hlist
799 local g = get_kanjiskip() -- K
800 handle_penalty_suppress(0, 0, g); real_insert(0, g)
802 local g = get_xkanjiskip(Np) -- X
803 handle_penalty_suppress(0, 0, g); real_insert(0, g)
807 -- (和文文字で終わる hlist) .. (anything)
808 local function handle_nq_ja_hlist()
810 local g = get_xkanjiskip(Nq) -- X
811 handle_penalty_suppress(0, 0, g); real_insert(0, g)
815 -- Nq が前側のクラスタとなることによる修正
816 local function adjust_nq()
817 if Nq.id==id_glyph then after_alchar(Nq)
818 elseif Nq.id==id_hlist or Nq.id==id_pbox or Nq.id==id_disc then after_hlist(Nq)
819 elseif Nq.id == id_pbox_w then
820 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
821 false, Nq, Np, box_stack_level)
825 -------------------- 開始・終了時の処理
828 local function handle_list_tail()
831 -- the current list is to be line-breaked:
832 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
834 g = node.new(id_kern); g.subtype = 0; g.kern = Np.lend
835 copy_attr(g, Np.nuc); set_attr(g, attr_icflag, BOXBDD)
836 node.insert_after(head, Np.last, g)
839 -- Insert \jcharwidowpenalty
840 Bp = widow_Bp; Np = widow_Np; Nq.lend = 0
842 handle_penalty_normal(0,
843 ltjs.get_penalty_table('jwp', 0, 0, box_stack_level))
846 -- the current list is the contents of a hbox
847 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
848 local g = new_jfm_glue(Np, Np.class, fast_find_char_class('boxbdd',Np.met))
850 set_attr(g, attr_icflag, BOXBDD)
851 head = node.insert_after(head, Np.last, g)
858 local function handle_list_head()
859 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
863 g = new_jfm_glue(Np, fast_find_char_class('parbdd',Np.met), Np.class)
865 g = new_jfm_glue(Np, fast_find_char_class('boxbdd',Np.met), Np.class)
868 set_attr(g, attr_icflag, BOXBDD)
869 if g.id==id_glue and #Bp==0 then
870 local h = node.new(id_penalty); copy_attr(h, Np.nuc)
871 h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD)
873 head = node.insert_before(head, Np.first, g)
880 local function init_var()
882 if uniq_id == 0x7FFFFFF then uniq_id = 0 end
883 lp = head; Bp = {}; widow_Bp = {}; widow_Np = {first = nil}
885 box_stack_level = ltjp.box_stack_level
886 kanji_skip=skip_table_to_spec('kanjiskip')
887 xkanji_skip=skip_table_to_spec('xkanjiskip')
889 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
890 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
891 post=nil, pre=nil, xspc_after=nil, xspc_before=nil,
894 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
895 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
896 post=nil, pre=nil, xspc_after=nil, xspc_before=nil,
899 -- the current list is to be line-breaked:
900 -- hbox from \parindent is skipped.
901 while lp and ((lp.id==id_whatsit and lp.subtype~=sid_user)
902 or ((lp.id==id_hlist) and (lp.subtype==3))) do
903 if (lp.id==id_hlist) and (lp.subtype==3) then par_indented = true end
907 -- the current list is the contents of a hbox:
908 -- insert a sentinelEG
909 last=node.tail(head); local g = node.new(id_kern)
910 node.insert_after(head, last, g); last = g
914 local function cleanup()
915 -- adjust attr_icflag for avoiding error
916 tex.setattribute('global', attr_icflag, 0)
917 node.free(kanji_skip); node.free(xkanji_skip)
919 local h = node.next(head)
920 if h.id == id_penalty and h.penalty == 10000 then
922 if h.id == id_glue and h.subtype == 15 and not h.next then
928 head = node.remove(head, last); node.free(last);-- remove the sentinel
932 -------------------- 外部から呼ばれる関数
935 function main(ahead, amode)
936 if not ahead then return ahead end
937 head = ahead; mode = amode; init_var(); calc_np()
939 extract_np(); handle_list_head()
945 extract_np(); adjust_nq()
947 if Np.id == id_jglyph then
950 if Np.id==id_hlist then handle_np_ja_hlist()
951 else handle_np_jachar() end
953 if Nq.id==id_hlist then handle_nq_ja_hlist()
954 else handle_nq_jachar() end
964 function create_inhibitglue_node()
965 local tn = node.new(id_whatsit, sid_user)
966 tn.user_id=30111; tn.type=100; tn.value=1
970 -- Node for indicating beginning of a paragraph
972 function create_beginpar_node()
973 local tn = node.new(id_whatsit, sid_user)
974 tn.user_id=30114; tn.type=100; tn.value=1
978 local function whatsit_callback(Np, lp, Nq, bsl)
979 if Np and Np.nuc then return Np
980 elseif Np and lp.user_id == 30114 then
981 Np.first = lp; Np.nuc = lp; Np.last = lp
984 Np.pre = 0; Np.post = 0
985 Np.xspc_before = false
986 Np.xspc_after = false
991 local function whatsit_after_callback(s, Nq, Np, bsl)
992 if not s and Nq.nuc.user_id == 30114 then
993 local x, y = node.prev(Nq.nuc), Nq.nuc
994 Nq.first, Nq.nuc, Nq.last = x, x, x
995 head = node.remove(head, y)
1000 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1001 "luatexja.beginpar.np_info", 1)
1002 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1003 "luatexja.beginpar.np_info_after", 1)