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)
13 luatexja.load_module('base'); local ltjb = luatexja.base
14 luatexja.load_module('stack'); local ltjs = luatexja.stack
15 luatexja.load_module('jfont'); local ltjf = luatexja.jfont
16 luatexja.load_module('pretreat'); local ltjp = luatexja.pretreat
18 local node_type = node.type
19 local node_new = node.new
20 local node_remove = node.remove
21 local node_prev = node.prev
22 local node_next = node.next
23 local node_copy = node.copy
24 local node_tail = node.tail
25 local node_free = node.free
26 local has_attr = node.has_attribute
27 local set_attr = node.set_attribute
28 local node_insert_before = node.insert_before
29 local node_insert_after = node.insert_after
30 local round = tex.round
31 local table_insert = table.insert
32 local uniq_id = 0 -- unique id
34 local id_glyph = node.id('glyph')
35 local id_hlist = node.id('hlist')
36 local id_vlist = node.id('vlist')
37 local id_rule = node.id('rule')
38 local id_ins = node.id('ins')
39 local id_mark = node.id('mark')
40 local id_adjust = node.id('adjust')
41 local id_disc = node.id('disc')
42 local id_whatsit = node.id('whatsit')
43 local id_math = node.id('math')
44 local id_glue = node.id('glue')
45 local id_kern = node.id('kern')
46 local id_penalty = node.id('penalty')
48 local id_glue_spec = node.id('glue_spec')
49 local id_jglyph = node.id('glyph') + 256 -- Japanese character
50 local id_box_like = node.id('hlist') + 256 -- vbox, shifted hbox
51 local id_pbox = node.id('hlist') + 512 -- already processed nodes (by \unhbox)
52 local id_pbox_w = node.id('hlist') + 513 -- cluster which consists of a whatsit
53 local sid_user = node.subtype('user_defined')
63 local IC_PROCESSED = 9
69 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
70 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
71 local attr_icflag = luatexbase.attributes['ltj@icflag']
72 local attr_autospc = luatexbase.attributes['ltj@autospc']
73 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
74 local attr_uniqid = luatexbase.attributes['ltj@uniqid']
75 local max_dimen = 1073741823
77 local ltjs_get_penalty_table = ltjs.get_penalty_table
78 local ltjs_get_skip_table = ltjs.get_skip_table
79 local ltjf_find_char_class = ltjf.find_char_class
80 local ltjf_font_metric_table = ltjf.font_metric_table
81 local ltjf_metrics = ltjf.metrics
83 local par_indented -- is the paragraph indented?
85 -------------------- Helper functions
87 -- This function is called only for acquiring `special' characters.
88 local function fast_find_char_class(c,m)
89 return m.chars[c] or 0
92 local spec_zero_glue = node_new(id_glue_spec)
93 spec_zero_glue.width = 0; spec_zero_glue.stretch_order = 0; spec_zero_glue.stretch = 0
94 spec_zero_glue.shrink_order = 0; spec_zero_glue.shrink = 0
96 local function get_zero_spec()
97 return node_copy(spec_zero_glue)
100 local function skip_table_to_spec(n)
101 local g = node_new(id_glue_spec)
102 local st = ltjs_get_skip_table(n, box_stack_level)
103 g.width = st.width; g.stretch = st.stretch; g.shrink = st.shrink
104 g.stretch_order = st.stretch_order; g.shrink_order = st.shrink_order
109 local function add_penalty(p,e)
110 if p.penalty>=10000 then
111 if e<=-10000 then p.penalty = 0 end
112 elseif p.penalty<=-10000 then
113 if e>=10000 then p.penalty = 0 end
115 p.penalty = p.penalty + e
116 if p.penalty>=10000 then p.penalty = 10000
117 elseif p.penalty<=-10000 then p.penalty = -10000 end
123 diffmet_rule = math.two_average
124 function math.two_add(a,b) return a+b end
125 function math.two_average(a,b) return (a+b)/2 end
127 -------------------- idea
128 -- 2 node の間に glue/kern/penalty を挿入する.
129 -- 基本方針: char node q と char node p の間
132 -- first: 最初の node,nuc: p,last: 最後の node
135 -- 実際の glue は Np.last, Nq.first の間に挿入される
136 -- Bp: Np.last, Nq.first の間の penalty node 達の配列
138 -- Np, Nq, Bp, widow_Bp について
140 -- 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,
141 -- 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.
142 -- 同様の関係は Bp, widow_Bp にも.
146 -- node x が non-char node のときは,x のみ
147 -- x が char_node のときは,
148 -- - x が \accent の第二引数だったとき
149 -- [kern2 kern y kern2] x の 3 node が核に加わる
150 -- - x の直後に \/ 由来 kern があったとき
151 -- その \/ 由来の kern が核に加わる
153 -- ins, mark, adjust, whatsit, penalty
155 -- Nq.last .. + .. Bp.first .... Bp[last] .... * .. Np.first
156 -- +: kern from LINEEND はここに入る
157 -- *: jfm glue はここに入る
159 local head -- the head of current list
160 local last -- the last node of current list
161 local lp -- 外側での list 走査時のカーソル
164 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
166 local ihb_flag -- JFM グルー挿入抑止用 flag
167 -- on: \inhibitglue 指定時,hlist の周囲
169 -------------------- hlist 内の文字の検索
171 local first_char, last_char, find_first_char
173 local function check_box(box_ptr, box_end)
174 local p = box_ptr; local found_visible_node = false
176 find_first_char = false; first_char = nil; last_char = nil
179 while p and p~=box_end do
183 p = node_next(node_next(node_next(p))); pid = p.id
184 elseif has_attr(p, attr_icflag)==IC_PROCESSED then
185 p = node_next(p); pid = p.id
188 if pid==id_glyph then
190 if find_first_char then
191 first_char = p; find_first_char = false
193 last_char = p; found_visible_node = true; p=node_next(p)
194 if (not p) or p==box_end then return found_visible_node end
198 if pid==id_hlist then
199 if has_attr(p, attr_icflag)==PACKED then
200 for q in node.traverse_id(id_glyph, p.head) do
201 if find_first_char then
202 first_char = q; find_first_char = false
204 last_char = q; found_visible_node = true; break
208 if check_box(p.head, nil) then found_visible_node = true end
209 else if find_first_char then
210 find_first_char = false
216 elseif not (pid==id_ins or pid==id_mark
217 or pid==id_adjust or pid==id_whatsit
218 or pid==id_penalty) then
219 found_visible_node = true
220 if find_first_char then
221 find_first_char = false
228 return found_visible_node
231 function check_box_high(Nx, box_ptr, box_end)
232 first_char = nil; last_char = nil; find_first_char = true
233 if check_box(box_ptr, box_end) then
235 if first_char.font == has_attr(first_char, attr_curjfnt) then
236 set_np_xspc_jachar(Nx, first_char)
238 set_np_xspc_alchar(Nx, first_char.char,first_char, ligature_head)
245 -------------------- Np の計算と情報取得
247 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
248 function (Np, lp, Nq, box_stack_level)
249 if Np.nuc then return Np
251 return Np -- your code
254 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
255 function (stat, Nq, Np, box_stack_level) return false end)
258 local function set_attr_icflag_processed(p)
259 local a = has_attr(p, attr_icflag) or 0
261 set_attr(p, attr_uniqid, uniq_id)
262 set_attr(p, attr_icflag, PROCESSED)
266 local function check_next_ickern()
267 if lp.id == id_kern and has_attr(lp, attr_icflag)==ITALIC then
268 set_attr(lp, attr_icflag, IC_PROCESSED)
269 set_attr(lp, attr_uniqid, uniq_id)
270 Np.last = lp; lp = node_next(lp)
271 else Np.last = Np.nuc end
274 local function calc_np_pbox()
275 local uid = has_attr(lp, attr_uniqid)
276 Np.first = lp; Np.id = id_pbox
277 lpa = KINSOKU -- dummy=
278 while lp~=last and lpa>=PACKED and lpa~=BOXBDD
279 and has_attr(lp, attr_uniqid) == uid do
280 Np.nuc = lp; set_attr(lp, attr_uniqid, uniq_id)
281 lp = node_next(lp); lpa = has_attr(lp, attr_icflag) or 0
286 local calc_np_auxtable = {
287 [id_glyph] = function()
289 if lp.font == has_attr(lp, attr_curjfnt) then
294 Np.first = lp; Np.nuc = lp; set_attr_icflag_processed(lp)
295 lp = node_next(lp); check_next_ickern(); return true
297 [id_hlist] = function()
298 Np.first = lp; Np.last = lp; Np.nuc = lp;
299 set_attr_icflag_processed(lp)
305 lp = node_next(lp); return true
307 [id_vlist] = function()
308 Np.first = 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_rule] = function()
313 Np.first = lp; Np.nuc = lp; Np.last = lp;
314 Np.id = id_box_like; set_attr_icflag_processed(lp);
315 lp = node_next(lp); return true
317 [id_ins] = function()
318 set_attr_icflag_processed(lp); lp = node_next(lp)
321 [id_mark] = function()
322 set_attr_icflag_processed(lp); lp = node_next(lp)
325 [id_adjust] = function()
326 set_attr_icflag_processed(lp); lp = node_next(lp)
329 [id_disc] = function()
330 Np.first = lp; Np.nuc = lp; set_attr_icflag_processed(lp);
331 Np.last = lp; Np.id = id_disc; lp = node_next(lp); return true
333 [id_whatsit] = function()
334 if lp.subtype==sid_user then
335 if lp.user_id==30111 then
336 local lq = node_next(lp)
337 head = node_remove(head, lp); node_free(lp); lp = lq; ihb_flag = true
339 set_attr_icflag_processed(lp)
340 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo"
341 , Np, lp, Nq, box_stack_level)
344 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc; return true
348 set_attr_icflag_processed(lp); lp = node_next(lp)
352 [id_math] = function()
353 Np.first = lp; Np.nuc = lp;
354 set_attr_icflag_processed(lp); lp = node_next(lp)
355 while lp.id~=id_math do
356 set_attr_icflag_processed(lp); lp = node_next(lp)
358 set_attr_icflag_processed(lp);
359 Np.last = lp; Np.id = id_math; lp = node_next(lp);
362 [id_glue] = function()
363 Np.first = lp; Np.nuc = lp; set_attr_icflag_processed(lp);
364 Np.last = lp; Np.id = id_glue; lp = node_next(lp); return true
366 [id_kern] = function()
368 if lp.subtype==2 then
369 set_attr_icflag_processed(lp); lp = node_next(lp)
370 set_attr_icflag_processed(lp); lp = node_next(lp)
371 set_attr_icflag_processed(lp); lp = node_next(lp)
372 set_attr_icflag_processed(lp); Np.nuc = lp
373 if lp.font == has_attr(lp, attr_curjfnt) then
378 lp = node_next(lp); check_next_ickern();
380 Np.id = id_kern; set_attr_icflag_processed(lp);
381 Np.last = lp; lp = node_next(lp)
385 [id_penalty] = function()
386 Bp[#Bp+1] = lp; set_attr_icflag_processed(lp);
387 lp = node_next(lp); return false
390 Np.first = lp; Np.nuc = lp; Np.last = lp;
391 Np.id = id_box_like; set_attr_icflag_processed(lp);
392 lp = node_next(lp); return true
396 local function calc_np()
397 -- We assume lp = node_next(Np.last)
399 Nr = Nq; for k in pairs(Nr) do Nr[k] = nil end
401 for k in pairs(Bp) do Bp[k] = nil end
404 lpa = has_attr(lp, attr_icflag) or 0
406 if lpa == BOXBDD then
407 local lq = node_next(lp)
408 head = node_remove(head, lp); node_free(lp); lp = lq
409 else calc_np_pbox(); return
411 elseif calc_np_auxtable[lp.id]() then return end
416 -- extract informations from Np
417 -- We think that "Np is a Japanese character" if Np.met~=nil,
418 -- "Np is an alphabetic character" if Np.pre~=nil,
419 -- "Np is not a character" otherwise.
422 function set_np_xspc_jachar(Nx, x)
423 local z = ltjf_font_metric_table[x.font]
425 local cls = ltjf_find_char_class(c, z)
426 local m = ltjf_metrics[z.jfm]
427 set_attr(x, attr_jchar_class, cls)
433 Nx.pre = ltjs_get_penalty_table('pre', c, 0, box_stack_level)
434 Nx.post = ltjs_get_penalty_table('post', c, 0, box_stack_level)
435 z = fast_find_char_class('lineend', m)
436 local y = m.size_cache[Nx.size].char_type[Nx.class]
437 if y.kern and y.kern[z] then
442 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/2)%2==1 do
456 x = x.components; c = x.char
459 while x.components and x.subtype and math.floor(x.subtype/2)%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()
479 if Np.id == id_jglyph then set_np_xspc_jachar(Np, x)
480 elseif Np.id == id_glyph then set_np_xspc_alchar(Np, x.char, x, ligature_head)
481 elseif Np.id == id_hlist then Np.last_char = check_box_high(Np, x.head, nil)
482 elseif Np.id == id_pbox then Np.last_char = check_box_high(Np, Np.first, node.next(Np.last))
483 elseif Np.id == id_disc then Np.last_char = check_box_high(Np, x.replace, nil)
484 elseif Np.id == id_math then 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 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); g.subtype = 1; g.kern = -Nq.lend;
516 set_attr(g, attr_icflag, LINEEND)
517 set_attr(g, attr_uniqid, uniq_id)
518 elseif g.id==id_kern then
519 g.kern = g.kern - Nq.lend
521 g.spec.width = g.spec.width - Nq.lend
527 -- change penalties (or create a new penalty, if needed)
528 local function handle_penalty_normal(post, pre, g)
529 local a = (pre or 0) + (post or 0)
531 if (a~=0 and not(g and g.id==id_kern)) or Nq.lend~=0 then
532 local p = node_new(id_penalty)
533 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
535 head = node_insert_before(head, Np.first, p)
537 set_attr(p, attr_icflag, KINSOKU)
538 set_attr(p, attr_uniqid, uniq_id)
540 else for i, v in pairs(Bp) do add_penalty(v,a) end
544 local function handle_penalty_always(post, pre, g)
545 local a = (pre or 0) + (post or 0)
547 if not (g and g.id==id_glue) or Nq.lend~=0 then
548 local p = node_new(id_penalty)
549 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
551 head = node_insert_before(head, Np.first, p)
553 set_attr(p, attr_icflag, KINSOKU)
554 set_attr(p, attr_uniqid, uniq_id)
556 else for i, v in pairs(Bp) do add_penalty(v,a) end
560 local function handle_penalty_suppress(post, pre, g)
561 local a = (pre or 0) + (post or 0)
563 if g and g.id==id_glue then
564 local p = node_new(id_penalty)
565 p.penalty = 10000; head = node_insert_before(head, Np.first, p)
567 set_attr(p, attr_icflag, KINSOKU)
568 set_attr(p, attr_uniqid, uniq_id)
570 else for i, v in pairs(Bp) do add_penalty(v,a) end
574 -- 和文文字間の JFM glue を node 化
575 local function new_jfm_glue(Nn, bc, ac)
576 -- bc, ac: char classes
578 local z = Nn.met.size_cache[Nn.size].char_type[bc]
579 if z.glue and z.glue[ac] then
580 local h = node_new(id_glue_spec)
581 h.width = z.glue[ac][1]
582 h.stretch = z.glue[ac][2]
583 h.shrink = z.glue[ac][3]
584 h.stretch_order=0; h.shrink_order=0
585 g = node_new(id_glue)
586 g.subtype = 0; g.spec = h
587 elseif z.kern and z.kern[ac] then
588 g = node_new(id_kern)
589 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)
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[Nn.size].kanjiskip
618 return { i[1], i[2], i[3] }
622 local function get_kanjiskip()
623 local g = node_new(id_glue)
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==Nq.met) and (Nq.size==Np.size) 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.size==Np.size) and (Nq.met==Np.met) and (Nq.var==Np.var) then
696 return new_jfm_glue(Nq, Nq.class, Np.class)
698 local g = new_jfm_glue(Nq, Nq.class,
699 fast_find_char_class('diffmet',Nq.met))
700 local h = new_jfm_glue(Np, fast_find_char_class('diffmet',Np.met),
702 return calc_ja_ja_aux(g,h)
706 -------------------- 和欧文間空白量の決定
709 local function get_xkanji_skip_from_jfm(Nn)
710 local i = Nn.met.size_cache[Nn.size].xkanjiskip
712 return { i[1], i[2], i[3] }
716 local function get_xkanjiskip(Nn)
717 local g = node_new(id_glue)
718 if Nq.xspc_after and Np.xspc_before and (Nq.auto_xspc or Np.auto_xspc) then
719 if xkanji_skip.width == max_dimen then
720 local gx = node_new(id_glue_spec);
721 gx.stretch_order = 0; gx.shrink_order = 0
722 local bk = get_xkanji_skip_from_jfm(Nn)
724 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
725 else node_free(gx); gx = get_zero_spec() -- fallback
728 else g.spec=node_copy(xkanji_skip) end
730 g.spec = get_zero_spec()
732 set_attr(g, attr_icflag, XKANJI_SKIP)
733 set_attr(g, attr_uniqid, uniq_id)
738 -------------------- 隣接した「塊」間の処理
740 local function get_OA_skip()
742 local c = Nq.char or 'jcharbdd'
743 return new_jfm_glue(Np, fast_find_char_class(c,Np.met), Np.class)
747 local function get_OB_skip()
749 local c = Np.char or 'jcharbdd'
750 return new_jfm_glue(Nq, Nq.class, fast_find_char_class(c,Nq.met))
755 -- (anything) .. jachar
756 local function handle_np_jachar()
758 if Nq.id==id_jglyph or ((Nq.id==id_pbox or Nq.id==id_pbox_w) and Nq.met) then
759 g = calc_ja_ja_glue() or get_kanjiskip() -- M->K
761 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
762 elseif Nq.met then -- Nq.id==id_hlist
763 g = get_OA_skip() or get_kanjiskip() -- O_A->K
764 handle_penalty_normal(0, Np.pre, g); real_insert(0, g)
766 g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
767 if Nq.id==id_hlist then Nq.post = 0 end
768 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
770 g = get_OA_skip() -- O_A
771 if Nq.id==id_glue then handle_penalty_normal(0, Np.pre, g)
772 elseif Nq.id==id_kern then handle_penalty_suppress(0, Np.pre, g)
773 else handle_penalty_always(0, Np.pre, g)
777 -- \jcharwidowpenalty 挿入予定箇所更新
778 if mode and ltjs_get_penalty_table('kcat', Np.char, 0, box_stack_level)%2~=1 then
779 widow_Np.first = Np.first;
780 local Bpr = widow_Bp; widow_Bp = Bp; Bp = Bpr
784 -- jachar .. (anything)
785 local function handle_nq_jachar()
788 if Np.id==id_hlist then Np.pre = 0 end
789 g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
791 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
793 g = get_OB_skip(); g = lineend_fix(g) -- O_B
794 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
795 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
796 else handle_penalty_always(Nq.post, 0, g)
798 real_insert(Nq.lend, g)
802 -- (anything) .. (和文文字で終わる hlist)
803 local function handle_np_ja_hlist()
805 if Nq.id==id_jglyph or ((Nq.id==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
806 g = get_OB_skip() or get_kanjiskip() -- O_B->K
808 handle_penalty_normal(Nq.post, 0, g); real_insert(Nq.lend, g)
809 elseif Nq.met then -- Nq.id==id_hlist
810 g = get_kanjiskip() -- K
811 handle_penalty_suppress(0, 0, g); real_insert(0, g)
813 g = get_xkanjiskip(Np) -- X
814 handle_penalty_suppress(0, 0, g); real_insert(0, g)
818 -- (和文文字で終わる hlist) .. (anything)
819 local function handle_nq_ja_hlist()
822 g = get_xkanjiskip(Nq) -- X
823 handle_penalty_suppress(0, 0, g); real_insert(0, g)
827 -- Nq が前側のクラスタとなることによる修正
828 local function adjust_nq()
829 if Nq.id==id_glyph then after_alchar(Nq)
830 elseif Nq.id==id_hlist or Nq.id==id_pbox or Nq.id==id_disc then after_hlist(Nq)
831 elseif Nq.id == id_pbox_w then
832 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
833 false, Nq, Np, box_stack_level)
837 -------------------- 開始・終了時の処理
840 local function handle_list_tail()
843 -- the current list is to be line-breaked:
844 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
846 g = node_new(id_kern); g.subtype = 0; g.kern = Np.lend
847 set_attr(g, attr_icflag, BOXBDD)
848 node_insert_after(head, Np.last, g)
851 -- Insert \jcharwidowpenalty
852 Bp = widow_Bp; Np = widow_Np; Nq.lend = 0
854 handle_penalty_normal(0,
855 ltjs_get_penalty_table('jwp', 0, 0, box_stack_level))
858 -- the current list is the contents of a hbox
859 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
860 local g = new_jfm_glue(Np, Np.class, fast_find_char_class('boxbdd',Np.met))
862 set_attr(g, attr_icflag, BOXBDD)
863 head = node_insert_after(head, Np.last, g)
870 local function handle_list_head()
871 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
875 g = new_jfm_glue(Np, fast_find_char_class('parbdd',Np.met), Np.class)
877 g = new_jfm_glue(Np, fast_find_char_class('boxbdd',Np.met), Np.class)
880 set_attr(g, attr_icflag, BOXBDD)
881 if g.id==id_glue and #Bp==0 then
882 local h = node_new(id_penalty)
883 h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD)
885 head = node_insert_before(head, Np.first, g)
892 local function init_var()
894 if uniq_id == 0x7FFFFFF then uniq_id = 0 end
895 lp = head; Bp = {}; widow_Bp = {}; widow_Np = {first = nil}
897 box_stack_level = ltjp.box_stack_level
898 kanji_skip=skip_table_to_spec('kanjiskip')
899 xkanji_skip=skip_table_to_spec('xkanjiskip')
901 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
902 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
903 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
906 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
907 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
908 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
911 -- the current list is to be line-breaked:
912 -- hbox from \parindent is skipped.
913 while lp and ((lp.id==id_whatsit and lp.subtype~=sid_user)
914 or ((lp.id==id_hlist) and (lp.subtype==3))) do
915 if (lp.id==id_hlist) and (lp.subtype==3) then par_indented = true end
919 -- the current list is the contents of a hbox:
920 -- insert a sentinelEG
921 last=node.tail(head); local g = node_new(id_kern)
922 node_insert_after(head, last, g); last = g
926 local function cleanup()
927 -- adjust attr_icflag for avoiding error
928 tex.attribute[attr_icflag] = -(0x7FFFFFFF)
929 node_free(kanji_skip); node_free(xkanji_skip)
931 local h = node_next(head)
932 if h.id == id_penalty and h.penalty == 10000 then
934 if h.id == id_glue and h.subtype == 15 and not h.next then
940 head = node_remove(head, last); node_free(last);-- remove the sentinel
944 -------------------- 外部から呼ばれる関数
947 function main(ahead, amode)
948 if not ahead then return ahead end
949 head = ahead; mode = amode; init_var(); calc_np()
951 extract_np(); handle_list_head()
957 extract_np(); adjust_nq()
959 if Np.id == id_jglyph then
962 if Np.id==id_hlist then handle_np_ja_hlist()
963 else handle_np_jachar() end
965 if Nq.id==id_hlist then handle_nq_ja_hlist()
966 else handle_nq_jachar() end
976 function create_inhibitglue_node()
977 local tn = node_new(id_whatsit, sid_user)
978 tn.user_id=30111; tn.type=100; tn.value=1
982 -- Node for indicating beginning of a paragraph
984 function create_beginpar_node()
985 local tn = node_new(id_whatsit, sid_user)
986 tn.user_id=30114; tn.type=100; tn.value=1
990 local function whatsit_callback(Np, lp, Nq, bsl)
991 if Np.nuc then return Np
992 elseif lp.user_id == 30114 then
993 Np.first = lp; Np.nuc = lp; Np.last = lp
996 Np.pre = 0; Np.post = 0
997 Np.xspc_before = false
998 Np.xspc_after = false
1003 local function whatsit_after_callback(s, Nq, Np, bsl)
1004 if not s and Nq.nuc.user_id == 30114 then
1005 local x, y = node.prev(Nq.nuc), Nq.nuc
1006 Nq.first, Nq.nuc, Nq.last = x, x, x
1007 head = node_remove(head, y)
1012 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1013 "luatexja.beginpar.np_info", 1)
1014 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1015 "luatexja.beginpar.np_info_after", 1)