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 require('luatexja.base'); local ltjb = luatexja.base
14 require('luatexja.stack'); local ltjs = luatexja.stack
15 require('luatexja.jfont'); local ltjf = luatexja.jfont
16 require('luatexja.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
33 local id_glyph = node.id('glyph')
34 local id_hlist = node.id('hlist')
35 local id_vlist = node.id('vlist')
36 local id_rule = node.id('rule')
37 local id_ins = node.id('ins')
38 local id_mark = node.id('mark')
39 local id_adjust = node.id('adjust')
40 local id_disc = node.id('disc')
41 local id_whatsit = node.id('whatsit')
42 local id_math = node.id('math')
43 local id_glue = node.id('glue')
44 local id_kern = node.id('kern')
45 local id_penalty = node.id('penalty')
47 local id_glue_spec = node.id('glue_spec')
48 local id_jglyph = node.id('glyph') + 256
49 local id_box_like = node.id('hlist') + 256
50 local id_pbox = node.id('hlist') + 512
51 local sid_user = node.subtype('user_defined')
61 local IC_PROCESSED = 9
67 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
68 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
69 local attr_icflag = luatexbase.attributes['ltj@icflag']
70 local attr_autospc = luatexbase.attributes['ltj@autospc']
71 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
72 local max_dimen = 1073741823
74 local ltjs_get_penalty_table = ltjs.get_penalty_table
75 local ltjs_get_skip_table = ltjs.get_skip_table
76 local ltjf_font_metric_table = ltjf.font_metric_table
77 local ltjf_metrics = ltjf.metrics
79 -------------------- Helper functions
81 local function find_char_class(c,m)
82 return m.chars[c] or 0
85 local spec_zero_glue = node_new(id_glue_spec)
86 spec_zero_glue.width = 0; spec_zero_glue.stretch_order = 0; spec_zero_glue.stretch = 0
87 spec_zero_glue.shrink_order = 0; spec_zero_glue.shrink = 0
89 local function get_zero_glue()
90 return node_copy(spec_zero_glue)
93 local function skip_table_to_spec(n)
94 local g = node_new(id_glue_spec)
95 local st = ltjs_get_skip_table(n, ltjp.box_stack_level)
96 g.width = st.width; g.stretch = st.stretch; g.shrink = st.shrink
97 g.stretch_order = st.stretch_order; g.shrink_order = st.shrink_order
102 local function add_penalty(p,e)
103 if p.penalty>=10000 then
104 if e<=-10000 then p.penalty = 0 end
105 elseif p.penalty<=-10000 then
106 if e>=10000 then p.penalty = 0 end
108 p.penalty = p.penalty + e
109 if p.penalty>=10000 then p.penalty = 10000
110 elseif p.penalty<=-10000 then p.penalty = -10000 end
116 diffmet_rule = math.two_average
117 function math.two_add(a,b) return a+b end
118 function math.two_average(a,b) return (a+b)/2 end
120 -------------------- idea
121 -- 2 node の間に glue/kern/penalty を挿入する.
122 -- 基本方針: char node q と char node p の間
125 -- first: 最初の node,nuc: p,last: 最後の node
128 -- 実際の glue は Np.last, Nq.first の間に挿入される
129 -- Bp: Np.last, Nq.first の間の penalty node 達の配列
131 -- Np, Nq, Bp, widow_Bp について
133 -- 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,
134 -- 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.
135 -- 同様の関係は Bp, widow_Bp にも.
139 -- node x が non-char node のときは,x のみ
140 -- x が char_node のときは,
141 -- - x が \accent の第二引数だったとき
142 -- [kern2 kern y kern2] x の 3 node が核に加わる
143 -- - x の直後に \/ 由来 kern があったとき
144 -- その \/ 由来の kern が核に加わる
146 -- ins, mark, adjust, whatsit, penalty
148 -- Nq.last .. + .. Bp.first .... Bp[last] .... * .. Np.first
149 -- +: kern from LINEEND はここに入る
150 -- *: jfm glue はここに入る
152 local head -- the head of current list
153 local last -- the last node of current list
154 local lp -- 外側での list 走査時のカーソル
157 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
159 local ihb_flag -- JFM グルー挿入抑止用 flag
160 -- on: \inhibitglue 指定時,hlist の周囲
162 -------------------- hlist 内の文字の検索
164 local first_char, last_char, find_first_char
166 local function check_box(box_ptr, box_end)
167 local p = box_ptr; local found_visible_node = false
169 find_first_char = false; first_char = nil; last_char = nil
172 while p and p~=box_end do
176 p = node_next(node_next(node_next(p))); pid = p.id
177 elseif has_attr(p, attr_icflag)==IC_PROCESSED then
178 p = node_next(p); pid = p.id
181 if pid==id_glyph then
183 if find_first_char then
184 first_char = p; find_first_char = false
186 last_char = p; found_visible_node = true; p=node_next(p)
187 if (not p) or p==box_end then return found_visible_node end
190 if pid==id_hlist then
191 if has_attr(p, attr_icflag)==PACKED then
192 for q in node.traverse_id(id_glyph, p.head) do
193 if find_first_char then
194 first_char = q; find_first_char = false
196 last_char = q; found_visible_node = true; break
200 if check_box(p.head, nil) then found_visible_node = true end
201 else if find_first_char then
202 find_first_char = false
208 elseif not (pid==id_ins or pid==id_mark
209 or pid==id_adjust or pid==id_whatsit
210 or pid==id_penalty) then
211 found_visible_node = true
212 if find_first_char then
213 find_first_char = false
220 return found_visible_node
223 -------------------- Np の計算と情報取得
225 local function set_attr_icflag_processed(p)
226 local a = has_attr(p, attr_icflag) or 0
227 if a<=1 then set_attr(p, attr_icflag, PROCESSED) end
230 local function check_next_ickern()
231 if lp.id == id_kern and has_attr(lp, attr_icflag)==ITALIC then
232 set_attr(lp, attr_icflag, IC_PROCESSED); Np.last = lp; lp = node_next(lp)
233 else Np.last = Np.nuc end
236 local function calc_np_pbox()
237 Np.first = lp; Np.id = id_pbox
238 lpa = KINSOKU -- dummy
239 while lp~=last and lpa>=PACKED and lpa~=BOXBDD do
240 Np.nuc = lp; lp = node_next(lp); lpa = has_attr(lp, attr_icflag) or 0
245 local function calc_np()
246 -- We assume lp = node_next(Np.last)
248 Nr = Nq; for k in pairs(Nr) do Nr[k] = nil end
250 for k in pairs(Bp) do Bp[k] = nil end
253 lpi = lp.id; lpa = has_attr(lp, attr_icflag) or 0
254 if lp==last then Np = nil; return
255 elseif lpa>=PACKED then
256 if lpa == BOXBDD then
257 local lq = node_next(lp)
258 head = node_remove(head, lp); lp = lq
259 else calc_np_pbox(); return end -- id_pbox
260 elseif lpi == id_ins or lpi == id_mark or lpi == id_adjust then
261 set_attr_icflag_processed(lp); lp = node_next(lp)
262 elseif lpi == id_penalty then
263 table_insert(Bp, lp); set_attr_icflag_processed(lp); lp = node_next(lp)
264 elseif lpi == id_whatsit then
265 if lp.subtype==sid_user and lp.user_id==30111 then
266 local lq = node_next(lp)
267 head = node_remove(head, lp); lp = lq; ihb_flag = true
269 set_attr_icflag_processed(lp); lp = node_next(lp)
271 else -- a `cluster' is found
273 if lpi == id_glyph then -- id_[j]glyph
274 if lp.font == has_attr(lp, attr_curjfnt) then Np.id = id_jglyph
275 else Np.id = id_glyph end
276 Np.nuc = lp; set_attr_icflag_processed(lp)
277 lp = node_next(lp); check_next_ickern(); return
278 elseif lpi == id_hlist then -- hlist
279 Np.last = lp; Np.nuc = lp; set_attr_icflag_processed(lp)
280 if lp.shift~=0 then Np.id = id_box_like
282 lp = node_next(lp); return
283 elseif lpi == id_vlist or lpi == id_rule then -- id_box_like
284 Np.nuc = lp; Np.last = lp; Np.id = id_box_like; break
285 elseif lpi == id_math then -- id_math
286 Np.nuc = lp; lp = node_next(lp)
287 while lp.id~=id_math do
288 set_attr_icflag_processed(lp); lp = node_next(lp)
290 elseif lpi == id_kern and lp.subtype==2 then -- id_kern
291 set_attr_icflag_processed(lp); lp = node_next(lp)
292 set_attr_icflag_processed(lp); lp = node_next(lp)
293 set_attr_icflag_processed(lp); lp = node_next(lp)
294 set_attr_icflag_processed(lp); Np.nuc = lp
295 if lp.font == has_attr(lp, attr_curjfnt) then Np.id = id_jglyph
296 else Np.id = id_glyph end
297 lp = node_next(lp); check_next_ickern(); return
298 else -- id_disc, id_glue, id_kern
303 set_attr_icflag_processed(lp); Np.last = lp; Np.id = lpi; lp = node_next(lp)
306 -- extract informations from Np
307 -- We think that "Np is a Japanese character" if Np.met~=nil,
308 -- "Np is an alphabetic character" if Np.pre~=nil,
309 -- "Np is not a character" otherwise.
312 local function set_np_xspc_jachar(c,x)
313 Np.class = has_attr(x, attr_jchar_class)
315 local z = ltjf_font_metric_table[x.font]
317 Np.met = ltjf_metrics[z.jfm]
319 Np.pre = ltjs_get_penalty_table('pre', c, 0, ltjp.box_stack_level)
320 Np.post = ltjs_get_penalty_table('post', c, 0, ltjp.box_stack_level)
321 z = find_char_class('lineend', Np.met)
322 local y = Np.met.size_cache[Np.size].char_type[Np.class]
323 if y.kern and y.kern[z] then
328 y = ltjs_get_penalty_table('xsp', c, 3, ltjp.box_stack_level)
329 Np.xspc_before = (y>=2)
330 Np.xspc_after = (y%2==1)
331 Np.auto_kspc = (has_attr(x, attr_autospc)==1)
332 Np.auto_xspc = (has_attr(x, attr_autoxspc)==1)
336 local ligature_head = 1
337 local ligature_tail = 2
338 local function set_np_xspc_alchar(c,x, lig)
340 if lig == ligature_head then
341 while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
342 x = x.components; c = x.char
345 while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
346 x = node_tail(x.components); c = x.char
349 Np.pre = ltjs_get_penalty_table('pre', c, 0, ltjp.box_stack_level)
350 Np.post = ltjs_get_penalty_table('post', c, 0, ltjp.box_stack_level)
352 Np.pre = 0; Np.post = 0
355 local y = ltjs_get_penalty_table('xsp', c, 3, ltjp.box_stack_level)
356 Np.xspc_before = (y%2==1)
357 Np.xspc_after = (y>=2)
358 Np.auto_xspc = (has_attr(x, attr_autoxspc)==1)
362 local function extract_np()
364 if Np.id == id_jglyph then
365 set_np_xspc_jachar(x.char, x)
366 elseif Np.id == id_glyph then
367 set_np_xspc_alchar(x.char, x, ligature_head)
368 elseif Np.id == id_hlist then
369 find_first_char = true; first_char = nil; last_char = nil
370 if check_box(x.head, nil) then
372 if first_char.font == has_attr(first_char, attr_curjfnt) then
373 set_np_xspc_jachar(first_char.char,first_char)
375 set_np_xspc_alchar(first_char.char,first_char, ligature_head)
379 elseif Np.id == id_pbox then -- mikann
380 find_first_char = true; first_char = nil; last_char = nil
381 if check_box(Np.first, node_next(Np.last)) then
383 if first_char.font == has_attr(first_char, attr_curjfnt) then
384 set_np_xspc_jachar(first_char.char,first_char)
386 set_np_xspc_alchar(first_char.char,first_char, ligature_head)
390 elseif Np.id == id_disc then
391 find_first_char = true; first_char = nil; last_char = nil
392 if check_box(x.replace, nil) then
394 if first_char.font == has_attr(first_char, attr_curjfnt) then
395 set_np_xspc_jachar(first_char.char,first_char)
397 set_np_xspc_alchar(first_char.char,first_char, ligature_head)
401 elseif Np.id == id_math then
402 set_np_xspc_alchar(-1, x)
406 -- change the information for the next loop
407 -- (will be done if Np is an alphabetic character or a hlist)
408 local function after_hlist()
410 if last_char.font == has_attr(last_char, attr_curjfnt) then
411 set_np_xspc_jachar(last_char.char,last_char, ligature_after)
413 set_np_xspc_alchar(last_char.char,last_char, ligature_after)
416 Np.pre = nil; Np.met = nil
419 local function after_alchar()
421 set_np_xspc_alchar(x.char,x, ligature_after)
425 -------------------- 最下層の処理
427 local function lineend_fix(g)
428 if g and g.id==id_kern then
430 elseif Nq.lend~=0 then
432 g = node_new(id_kern); g.subtype = 1
433 g.kern = -Nq.lend; set_attr(g, attr_icflag, LINEEND)
434 elseif g.id==id_kern then
435 g.kern = g.kern - Nq.lend
437 g.spec.width = g.spec.width - Nq.lend
443 -- change penalties (or create a new penalty, if needed)
444 local function handle_penalty_normal(post, pre, g)
445 local a = (pre or 0) + (post or 0)
447 if (a~=0 and not(g and g.id==id_kern)) or Nq.lend~=0 then
448 local p = node_new(id_penalty)
449 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
451 head = node_insert_before(head, Np.first, p)
452 Bp[1] = p; set_attr(p, attr_icflag, KINSOKU)
454 else for i, v in pairs(Bp) do add_penalty(v,a) end
458 local function handle_penalty_always(post, pre, g)
459 local a = (pre or 0) + (post or 0)
461 if not (g and g.id==id_glue) or Nq.lend~=0 then
462 local p = node_new(id_penalty)
463 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
465 head = node_insert_before(head, Np.first, p)
466 Bp[1] = p; set_attr(p, attr_icflag, KINSOKU)
468 else for i, v in pairs(Bp) do add_penalty(v,a) end
472 local function handle_penalty_suppress(post, pre, g)
473 local a = (pre or 0) + (post or 0)
475 if g and g.id==id_glue then
476 local p = node_new(id_penalty)
477 p.penalty = 10000; head = node_insert_before(head, Np.first, p)
478 Bp[1] = p; set_attr(p, attr_icflag, KINSOKU)
480 else for i, v in pairs(Bp) do add_penalty(v,a) end
484 -- 和文文字間の JFM glue を node 化
485 local function new_jfm_glue(Nn, bc, ac)
486 -- bc, ac: char classes
488 local z = Nn.met.size_cache[Nn.size].char_type[bc]
489 if z.glue and z.glue[ac] then
490 local h = node_new(id_glue_spec)
491 h.width = z.glue[ac][1]
492 h.stretch = z.glue[ac][2]
493 h.shrink = z.glue[ac][3]
494 h.stretch_order=0; h.shrink_order=0
495 g = node_new(id_glue)
496 g.subtype = 0; g.spec = h
497 elseif z.kern and z.kern[ac] then
498 g = node_new(id_kern)
499 g.subtype = 1; g.kern = z.kern[ac]
501 if g then set_attr(g, attr_icflag, FROM_JFM) end
505 -- Nq.last (kern w) .... (glue/kern g) Np.first
506 local function real_insert(w, g)
508 local h = node_new(id_kern)
509 set_attr(h, attr_icflag, LINE_END)
510 h.kern = w; h.subtype = 1
511 head = node_insert_after(head, Nq.last, h)
514 head = node_insert_before(head, Np.first, g)
519 -------------------- 和文文字間空白量の決定
522 local function get_kanji_skip_from_jfm(Nn)
523 local i = Nn.met.size_cache[Nn.size].kanjiskip
525 return { i[1], i[2], i[3] }
529 local function get_kanjiskip()
530 local g = node_new(id_glue)
531 if Np.auto_kspc or Nq.auto_kspc then
532 if kanji_skip.width == max_dimen then
533 local gx = node_new(id_glue_spec);
534 gx.stretch_order = 0; gx.shrink_order = 0
535 local bk = get_kanji_skip_from_jfm(Nq)
537 if (Np.met==Nq.met) and (Nq.size==Np.size) and (Nq.var==Np.var) then
540 ak = get_kanji_skip_from_jfm(Np)
544 gx.width = round(diffmet_rule(bk[1], ak[1]))
545 gx.stretch = round(diffmet_rule(bk[2], ak[2]))
546 gx.shrink = -round(diffmet_rule(-bk[3], -ak[3]))
548 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
551 gx.width = ak[1]; gx.stretch = ak[2]; gx.shrink = ak[3]
552 else gx = get_zero_glue() -- fallback
555 else g.spec=node_copy(kanji_skip) end
557 g.spec = get_zero_glue()
559 set_attr(g, attr_icflag, KANJI_SKIP)
563 local function calc_ja_ja_aux(gb,ga)
567 if not ga then return gb end
568 local k = node.type(gb.id) .. node.type(ga.id)
569 if k == 'glueglue' then
571 gb.spec.width = round(diffmet_rule(gb.spec.width, ga.spec.width))
572 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch,ga.spec.shrink))
573 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, -ga.spec.shrink))
576 elseif k == 'kernkern' then
578 gb.kern = round(diffmet_rule(gb.kern, ga.kern))
581 elseif k == 'kernglue' then
582 -- gb: kern, ga: glue
583 ga.spec.width = round(diffmet_rule(gb.kern,ga.spec.width))
584 ga.spec.stretch = round(diffmet_rule(ga.spec.stretch, 0))
585 ga.spec.shrink = -round(diffmet_rule(-ga.spec.shrink, 0))
589 -- gb: glue, ga: kern
590 gb.spec.width = round(diffmet_rule(ga.kern, gb.spec.width))
591 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch, 0))
592 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, 0))
599 local function calc_ja_ja_glue()
600 if ihb_flag then return nil
601 elseif (Nq.size==Np.size) and (Nq.met==Np.met) and (Nq.var==Np.var) then
602 return new_jfm_glue(Nq, Nq.class, Np.class)
604 local g = new_jfm_glue(Nq, Nq.class,
605 find_char_class('diffmet',Nq.met))
606 local h = new_jfm_glue(Np, find_char_class('diffmet',Np.met),
608 return calc_ja_ja_aux(g,h)
612 -------------------- 和欧文間空白量の決定
615 local function get_xkanji_skip_from_jfm(Nn)
616 local i = Nn.met.size_cache[Nn.size].xkanjiskip
618 return { i[1], i[2], i[3] }
622 local function get_xkanjiskip(Nn)
623 local g = node_new(id_glue)
624 if Nq.xspc_after and Np.xspc_before and (Nq.auto_xspc or Np.auto_xspc) then
625 if xkanji_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_xkanji_skip_from_jfm(Nn)
630 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
631 else gx = get_zero_glue() -- fallback
634 else g.spec=node_copy(xkanji_skip) end
636 g.spec = get_zero_glue()
638 set_attr(g, attr_icflag, XKANJI_SKIP)
643 -------------------- 隣接した「塊」間の処理
645 local function get_OA_skip()
647 return new_jfm_glue(Np, find_char_class('jcharbdd',Np.met), Np.class)
651 local function get_OB_skip()
653 return new_jfm_glue(Nq, Nq.class, find_char_class('jcharbdd',Nq.met))
658 -- (anything) .. jachar
659 local function handle_np_jachar()
661 if Nq.id==id_jglyph or (Nq.id==id_pbox and Nq.met) then
662 g = calc_ja_ja_glue() or get_kanjiskip() -- M->K
664 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
665 elseif Nq.met then -- Nq.id==id_hlist
666 g = get_OA_skip() or get_kanjiskip() -- O_A->K
667 handle_penalty_normal(0, Np.pre, g); real_insert(0, g)
669 g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
670 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
672 g = get_OA_skip() -- O_A
673 if Nq.id==id_glue then handle_penalty_normal(0, Np.pre, g)
674 elseif Nq.id==id_kern then handle_penalty_suppress(0, Np.pre, g)
675 else handle_penalty_always(0, Np.pre, g)
679 -- \jcharwidowpenalty 挿入予定箇所更新
680 if mode and ltjs_get_penalty_table('kcat', Np.char, 0, ltjp.box_stack_level)%2~=1 then
681 widow_Np.first = Np.first;
682 local Bpr = widow_Bp; widow_Bp = Bp; Bp = Bpr
686 -- jachar .. (anything)
687 local function handle_nq_jachar()
690 g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
692 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
694 g = get_OB_skip(); g = lineend_fix(g) -- O_B
695 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
696 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
697 else handle_penalty_always(Nq.post, 0, g)
699 real_insert(Nq.lend, g)
703 -- (anything) .. (和文文字で終わる hlist)
704 local function handle_np_ja_hlist()
706 if Nq.id==id_jglyph or (Nq.id==id_pbox and Nq.met) then
707 g = get_OB_skip() or get_kanjiskip() -- O_B->K
709 handle_penalty_normal(Nq.post, 0, g); real_insert(Nq.lend, g)
710 elseif Nq.met then -- Nq.id==id_hlist
711 g = get_kanjiskip() -- K
712 handle_penalty_suppress(0, 0, g); real_insert(0, g)
714 g = get_xkanjiskip(Np) -- X
715 handle_penalty_suppress(0, 0, g); real_insert(0, g)
719 -- (和文文字で終わる hlist) .. (anything)
720 local function handle_nq_ja_hlist()
723 g = get_xkanjiskip(Nq) -- X
724 handle_penalty_suppress(0, 0, g); real_insert(0, g)
728 -------------------- 開始・終了時の処理
731 local function handle_list_tail()
734 -- the current list is to be line-breaked:
735 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
737 g = node_new(id_kern); g.subtype = 0; g.kern = Np.lend
738 set_attr(g, attr_icflag, BOXBDD)
739 node_insert_after(head, Np.last, g)
742 -- Insert \jcharwidowpenalty
743 Bp = widow_Bp; Np = widow_Np; Nq.lend = 0
745 handle_penalty_normal(0,
746 ltjs_get_penalty_table('jwp', 0, 0, ltjp.box_stack_level))
749 -- the current list is the contents of a hbox
750 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
751 local g = new_jfm_glue(Np, Np.class, find_char_class('boxbdd',Np.met))
753 set_attr(g, attr_icflag, BOXBDD)
754 head = node_insert_after(head, Np.last, g)
757 head = node_remove(head, last) -- remove the sentinel
762 local function handle_list_head()
763 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
764 local g = new_jfm_glue(Np, find_char_class('boxbdd',Np.met), Np.class)
766 set_attr(g, attr_icflag, BOXBDD)
767 if g.id==id_glue and #Bp==0 then
768 local h = node_new(id_penalty)
769 h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD)
771 head = node_insert_before(head, Np.first, g)
777 local function init_var()
778 lp = head; Bp = {}; widow_Bp = {}; widow_Np = {first = nil}
779 kanji_skip=skip_table_to_spec('kanjiskip')
780 xkanji_skip=skip_table_to_spec('xkanjiskip')
782 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
783 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
784 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
787 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
788 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
789 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
792 -- the current list is to be line-breaked:
793 -- hbox from \parindent is skipped.
794 while lp and (lp.id==id_whatsit or ((lp.id==id_hlist) and (lp.subtype==3))) do
798 -- the current list is the contents of a hbox:
800 last=node.tail(head); local g = node_new(id_kern)
801 node_insert_after(head, last, g); last = g
805 -------------------- 外部から呼ばれる関数
808 function main(ahead, amode)
809 if not ahead then return ahead end
810 head = ahead; mode = amode; init_var(); calc_np()
812 extract_np(); handle_list_head()
813 if Np.id==id_glyph then after_alchar()
814 elseif Np.id==id_hlist or Np.id==id_pbox or Np.id==id_disc then after_hlist()
817 if not mode then head = node_remove(head, last) end
824 if Np.id == id_jglyph then
827 if Np.id==id_hlist then handle_np_ja_hlist()
828 else handle_np_jachar() end
830 if Nq.id==id_hlist then handle_nq_ja_hlist()
831 else handle_nq_jachar() end
834 if Np.id==id_glyph then after_alchar()
835 elseif Np.id==id_hlist or Np.id==id_pbox or Np.id==id_disc then after_hlist()
840 -- adjust attr_icflag
841 tex.attribute[attr_icflag] = -(0x7FFFFFFF)
846 local inhibitglue_node=node_new(id_whatsit, sid_user)
847 inhibitglue_node.user_id=30111; inhibitglue_node.type=100; inhibitglue_node.value=1
849 function create_inhibitglue_node()
850 node.write(node.copy(inhibitglue_node))