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_find_char_class = ltjf.find_char_class
77 local ltjf_font_metric_table = ltjf.font_metric_table
78 local ltjf_metrics = ltjf.metrics
80 local par_indented -- is the paragraph indented?
82 -------------------- Helper functions
84 -- This function is called only for acquiring `special' characters.
85 local function fast_find_char_class(c,m)
86 return m.chars[c] or 0
89 local spec_zero_glue = node_new(id_glue_spec)
90 spec_zero_glue.width = 0; spec_zero_glue.stretch_order = 0; spec_zero_glue.stretch = 0
91 spec_zero_glue.shrink_order = 0; spec_zero_glue.shrink = 0
93 local function get_zero_glue()
94 return node_copy(spec_zero_glue)
97 local function skip_table_to_spec(n)
98 local g = node_new(id_glue_spec)
99 local st = ltjs_get_skip_table(n, box_stack_level)
100 g.width = st.width; g.stretch = st.stretch; g.shrink = st.shrink
101 g.stretch_order = st.stretch_order; g.shrink_order = st.shrink_order
106 local function add_penalty(p,e)
107 if p.penalty>=10000 then
108 if e<=-10000 then p.penalty = 0 end
109 elseif p.penalty<=-10000 then
110 if e>=10000 then p.penalty = 0 end
112 p.penalty = p.penalty + e
113 if p.penalty>=10000 then p.penalty = 10000
114 elseif p.penalty<=-10000 then p.penalty = -10000 end
120 diffmet_rule = math.two_average
121 function math.two_add(a,b) return a+b end
122 function math.two_average(a,b) return (a+b)/2 end
124 -------------------- idea
125 -- 2 node の間に glue/kern/penalty を挿入する.
126 -- 基本方針: char node q と char node p の間
129 -- first: 最初の node,nuc: p,last: 最後の node
132 -- 実際の glue は Np.last, Nq.first の間に挿入される
133 -- Bp: Np.last, Nq.first の間の penalty node 達の配列
135 -- Np, Nq, Bp, widow_Bp について
137 -- 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,
138 -- 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.
139 -- 同様の関係は Bp, widow_Bp にも.
143 -- node x が non-char node のときは,x のみ
144 -- x が char_node のときは,
145 -- - x が \accent の第二引数だったとき
146 -- [kern2 kern y kern2] x の 3 node が核に加わる
147 -- - x の直後に \/ 由来 kern があったとき
148 -- その \/ 由来の kern が核に加わる
150 -- ins, mark, adjust, whatsit, penalty
152 -- Nq.last .. + .. Bp.first .... Bp[last] .... * .. Np.first
153 -- +: kern from LINEEND はここに入る
154 -- *: jfm glue はここに入る
156 local head -- the head of current list
157 local last -- the last node of current list
158 local lp -- 外側での list 走査時のカーソル
161 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
163 local ihb_flag -- JFM グルー挿入抑止用 flag
164 -- on: \inhibitglue 指定時,hlist の周囲
166 -------------------- hlist 内の文字の検索
168 local first_char, last_char, find_first_char
170 local function check_box(box_ptr, box_end)
171 local p = box_ptr; local found_visible_node = false
173 find_first_char = false; first_char = nil; last_char = nil
176 while p and p~=box_end do
180 p = node_next(node_next(node_next(p))); pid = p.id
181 elseif has_attr(p, attr_icflag)==IC_PROCESSED then
182 p = node_next(p); pid = p.id
185 if pid==id_glyph then
187 if find_first_char then
188 first_char = p; find_first_char = false
190 last_char = p; found_visible_node = true; p=node_next(p)
191 if (not p) or p==box_end then return found_visible_node end
194 if pid==id_hlist then
195 if has_attr(p, attr_icflag)==PACKED then
196 for q in node.traverse_id(id_glyph, p.head) do
197 if find_first_char then
198 first_char = q; find_first_char = false
200 last_char = q; found_visible_node = true; break
204 if check_box(p.head, nil) then found_visible_node = true end
205 else if find_first_char then
206 find_first_char = false
212 elseif not (pid==id_ins or pid==id_mark
213 or pid==id_adjust or pid==id_whatsit
214 or pid==id_penalty) then
215 found_visible_node = true
216 if find_first_char then
217 find_first_char = false
224 return found_visible_node
227 -------------------- Np の計算と情報取得
229 local function set_attr_icflag_processed(p)
230 local a = has_attr(p, attr_icflag) or 0
231 if a<=1 then set_attr(p, attr_icflag, PROCESSED) end
234 local function check_next_ickern()
235 if lp.id == id_kern and has_attr(lp, attr_icflag)==ITALIC then
236 set_attr(lp, attr_icflag, IC_PROCESSED); Np.last = lp; lp = node_next(lp)
237 else Np.last = Np.nuc end
240 local function calc_np_pbox()
241 Np.first = lp; Np.id = id_pbox
242 lpa = KINSOKU -- dummy
243 while lp~=last and lpa>=PACKED and lpa~=BOXBDD do
244 Np.nuc = lp; lp = node_next(lp); lpa = has_attr(lp, attr_icflag) or 0
249 local calc_np_auxtable = {
250 [id_glyph] = function()
252 if lp.font == has_attr(lp, attr_curjfnt) then
257 Np.first = lp; Np.nuc = lp; set_attr_icflag_processed(lp)
258 lp = node_next(lp); check_next_ickern(); return true
260 [id_hlist] = function()
261 Np.first = lp; Np.last = lp; Np.nuc = lp;
262 set_attr_icflag_processed(lp)
268 lp = node_next(lp); return true
270 [id_vlist] = function()
271 Np.first = lp; Np.nuc = lp; Np.last = lp;
272 Np.id = id_box_like; set_attr_icflag_processed(lp);
273 lp = node_next(lp); return true
275 [id_rule] = function()
276 Np.first = lp; Np.nuc = lp; Np.last = lp;
277 Np.id = id_box_like; set_attr_icflag_processed(lp);
278 lp = node_next(lp); return true
280 [id_ins] = function()
281 set_attr_icflag_processed(lp); lp = node_next(lp)
284 [id_mark] = function()
285 set_attr_icflag_processed(lp); lp = node_next(lp)
288 [id_adjust] = function()
289 set_attr_icflag_processed(lp); lp = node_next(lp)
292 [id_disc] = function()
293 Np.first = lp; Np.nuc = lp; set_attr_icflag_processed(lp);
294 Np.last = lp; Np.id = id_disc; lp = node_next(lp); return true
296 [id_whatsit] = function()
297 if lp.subtype==sid_user and lp.user_id==30111 then
298 local lq = node_next(lp)
299 head = node_remove(head, lp); node_free(lp); lp = lq; ihb_flag = true
301 set_attr_icflag_processed(lp); lp = node_next(lp)
305 [id_math] = function()
306 Np.first = lp; Np.nuc = lp;
307 set_attr_icflag_processed(lp); lp = node_next(lp)
308 while lp.id~=id_math do
309 set_attr_icflag_processed(lp); lp = node_next(lp)
311 Np.last = lp; Np.id = id_math; lp = node_next(lp)
314 [id_glue] = function()
315 Np.first = lp; Np.nuc = lp; set_attr_icflag_processed(lp);
316 Np.last = lp; Np.id = id_glue; lp = node_next(lp); return true
318 [id_kern] = function()
320 if lp.subtype==2 then
321 set_attr_icflag_processed(lp); lp = node_next(lp)
322 set_attr_icflag_processed(lp); lp = node_next(lp)
323 set_attr_icflag_processed(lp); lp = node_next(lp)
324 set_attr_icflag_processed(lp); Np.nuc = lp
325 if lp.font == has_attr(lp, attr_curjfnt) then
330 lp = node_next(lp); check_next_ickern();
332 Np.id = id_kern; set_attr_icflag_processed(lp);
333 Np.last = lp; lp = node_next(lp)
337 [id_penalty] = function()
338 Bp[#Bp+1] = lp; set_attr_icflag_processed(lp);
339 lp = node_next(lp); return false
342 Np.first = lp; Np.nuc = lp; Np.last = lp;
343 Np.id = id_box_like; set_attr_icflag_processed(lp);
344 lp = node_next(lp); return true
348 local function calc_np()
349 -- We assume lp = node_next(Np.last)
351 Nr = Nq; for k in pairs(Nr) do Nr[k] = nil end
353 for k in pairs(Bp) do Bp[k] = nil end
356 lpa = has_attr(lp, attr_icflag) or 0
358 if lpa == BOXBDD then
359 local lq = node_next(lp)
360 head = node_remove(head, lp); node_free(lp); lp = lq
361 else calc_np_pbox(); return end -- id_pbox
362 elseif calc_np_auxtable[lp.id]() then return end
367 -- extract informations from Np
368 -- We think that "Np is a Japanese character" if Np.met~=nil,
369 -- "Np is an alphabetic character" if Np.pre~=nil,
370 -- "Np is not a character" otherwise.
373 local function set_np_xspc_jachar(x)
374 local z = ltjf_font_metric_table[x.font]
376 local cls = ltjf_find_char_class(c, z)
377 local m = ltjf_metrics[z.jfm]
378 set_attr(x, attr_jchar_class, cls)
384 Np.pre = ltjs_get_penalty_table('pre', c, 0, box_stack_level)
385 Np.post = ltjs_get_penalty_table('post', c, 0, box_stack_level)
386 z = fast_find_char_class('lineend', m)
387 local y = m.size_cache[Np.size].char_type[Np.class]
388 if y.kern and y.kern[z] then
393 y = ltjs_get_penalty_table('xsp', c, 3, box_stack_level)
394 Np.xspc_before = (y%2==1)
395 Np.xspc_after = (y>=2)
396 Np.auto_kspc = (has_attr(x, attr_autospc)==1)
397 Np.auto_xspc = (has_attr(x, attr_autoxspc)==1)
401 local ligature_head = 1
402 local ligature_tail = 2
403 local function set_np_xspc_alchar(c,x, lig)
405 if lig == ligature_head then
406 while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
407 x = x.components; c = x.char
410 while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
411 x = node_tail(x.components); c = x.char
414 Np.pre = ltjs_get_penalty_table('pre', c, 0, box_stack_level)
415 Np.post = ltjs_get_penalty_table('post', c, 0, box_stack_level)
417 Np.pre = 0; Np.post = 0
420 local y = ltjs_get_penalty_table('xsp', c, 3, box_stack_level)
421 Np.xspc_before = (y%2==1)
422 Np.xspc_after = (y>=2)
423 Np.auto_xspc = (has_attr(x, attr_autoxspc)==1)
427 local function extract_np()
429 if Np.id == id_jglyph then
430 set_np_xspc_jachar(x)
431 elseif Np.id == id_glyph then
432 set_np_xspc_alchar(x.char, x, ligature_head)
433 elseif Np.id == id_hlist then
434 find_first_char = true; first_char = nil; last_char = nil
435 if check_box(x.head, nil) then
437 if first_char.font == has_attr(first_char, attr_curjfnt) then
438 set_np_xspc_jachar(first_char)
440 set_np_xspc_alchar(first_char.char,first_char, ligature_head)
444 elseif Np.id == id_pbox then -- mikann
445 find_first_char = true; first_char = nil; last_char = nil
446 if check_box(Np.first, node_next(Np.last)) then
448 if first_char.font == has_attr(first_char, attr_curjfnt) then
449 set_np_xspc_jachar(first_char)
451 set_np_xspc_alchar(first_char.char,first_char, ligature_head)
455 elseif Np.id == id_disc then
456 find_first_char = true; first_char = nil; last_char = nil
457 if check_box(x.replace, nil) then
459 if first_char.font == has_attr(first_char, attr_curjfnt) then
460 set_np_xspc_jachar(first_char)
462 set_np_xspc_alchar(first_char.char,first_char, ligature_head)
466 elseif Np.id == id_math then
467 set_np_xspc_alchar(-1, x)
471 -- change the information for the next loop
472 -- (will be done if Np is an alphabetic character or a hlist)
473 local function after_hlist()
475 if last_char.font == has_attr(last_char, attr_curjfnt) then
476 set_np_xspc_jachar(last_char, ligature_after)
478 set_np_xspc_alchar(last_char.char,last_char, ligature_after)
481 Np.pre = nil; Np.met = nil
484 local function after_alchar()
486 set_np_xspc_alchar(x.char,x, ligature_after)
490 -------------------- 最下層の処理
492 local function lineend_fix(g)
493 if g and g.id==id_kern then
495 elseif Nq.lend~=0 then
497 g = node_new(id_kern); g.subtype = 1
498 g.kern = -Nq.lend; set_attr(g, attr_icflag, LINEEND)
499 elseif g.id==id_kern then
500 g.kern = g.kern - Nq.lend
502 g.spec.width = g.spec.width - Nq.lend
508 -- change penalties (or create a new penalty, if needed)
509 local function handle_penalty_normal(post, pre, g)
510 local a = (pre or 0) + (post or 0)
512 if (a~=0 and not(g and g.id==id_kern)) or Nq.lend~=0 then
513 local p = node_new(id_penalty)
514 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
516 head = node_insert_before(head, Np.first, p)
517 table_insert(Bp, p); set_attr(p, attr_icflag, KINSOKU)
519 else for i, v in pairs(Bp) do add_penalty(v,a) end
523 local function handle_penalty_always(post, pre, g)
524 local a = (pre or 0) + (post or 0)
526 if not (g and g.id==id_glue) or Nq.lend~=0 then
527 local p = node_new(id_penalty)
528 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
530 head = node_insert_before(head, Np.first, p)
531 table_insert(Bp, p); set_attr(p, attr_icflag, KINSOKU)
533 else for i, v in pairs(Bp) do add_penalty(v,a) end
537 local function handle_penalty_suppress(post, pre, g)
538 local a = (pre or 0) + (post or 0)
540 if g and g.id==id_glue then
541 local p = node_new(id_penalty)
542 p.penalty = 10000; head = node_insert_before(head, Np.first, p)
543 table_insert(Bp, p); set_attr(p, attr_icflag, KINSOKU)
545 else for i, v in pairs(Bp) do add_penalty(v,a) end
549 -- 和文文字間の JFM glue を node 化
550 local function new_jfm_glue(Nn, bc, ac)
551 -- bc, ac: char classes
553 local z = Nn.met.size_cache[Nn.size].char_type[bc]
554 if z.glue and z.glue[ac] then
555 local h = node_new(id_glue_spec)
556 h.width = z.glue[ac][1]
557 h.stretch = z.glue[ac][2]
558 h.shrink = z.glue[ac][3]
559 h.stretch_order=0; h.shrink_order=0
560 g = node_new(id_glue)
561 g.subtype = 0; g.spec = h
562 elseif z.kern and z.kern[ac] then
563 g = node_new(id_kern)
564 g.subtype = 1; g.kern = z.kern[ac]
566 if g then set_attr(g, attr_icflag, FROM_JFM) end
570 -- Nq.last (kern w) .... (glue/kern g) Np.first
571 local function real_insert(w, g)
573 local h = node_new(id_kern)
574 set_attr(h, attr_icflag, LINE_END)
575 h.kern = w; h.subtype = 1
576 head = node_insert_after(head, Nq.last, h)
579 head = node_insert_before(head, Np.first, g)
584 -------------------- 和文文字間空白量の決定
587 local function get_kanji_skip_from_jfm(Nn)
588 local i = Nn.met.size_cache[Nn.size].kanjiskip
590 return { i[1], i[2], i[3] }
594 local function get_kanjiskip()
595 local g = node_new(id_glue)
596 if Np.auto_kspc or Nq.auto_kspc then
597 if kanji_skip.width == max_dimen then
598 local gx = node_new(id_glue_spec);
599 gx.stretch_order = 0; gx.shrink_order = 0
600 local bk = get_kanji_skip_from_jfm(Nq)
602 if (Np.met==Nq.met) and (Nq.size==Np.size) and (Nq.var==Np.var) then
605 ak = get_kanji_skip_from_jfm(Np)
609 gx.width = round(diffmet_rule(bk[1], ak[1]))
610 gx.stretch = round(diffmet_rule(bk[2], ak[2]))
611 gx.shrink = -round(diffmet_rule(-bk[3], -ak[3]))
613 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
616 gx.width = ak[1]; gx.stretch = ak[2]; gx.shrink = ak[3]
617 else node_free(gx); gx = get_zero_glue() -- fallback
620 else g.spec=node_copy(kanji_skip); node_free(gx) end
622 g.spec = get_zero_glue(); node_free(gx)
624 set_attr(g, attr_icflag, KANJI_SKIP)
628 local function calc_ja_ja_aux(gb,ga)
632 if not ga then return gb end
633 local k = node.type(gb.id) .. node.type(ga.id)
634 if k == 'glueglue' then
636 gb.spec.width = round(diffmet_rule(gb.spec.width, ga.spec.width))
637 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch,ga.spec.shrink))
638 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, -ga.spec.shrink))
641 elseif k == 'kernkern' then
643 gb.kern = round(diffmet_rule(gb.kern, ga.kern))
646 elseif k == 'kernglue' then
647 -- gb: kern, ga: glue
648 ga.spec.width = round(diffmet_rule(gb.kern,ga.spec.width))
649 ga.spec.stretch = round(diffmet_rule(ga.spec.stretch, 0))
650 ga.spec.shrink = -round(diffmet_rule(-ga.spec.shrink, 0))
654 -- gb: glue, ga: kern
655 gb.spec.width = round(diffmet_rule(ga.kern, gb.spec.width))
656 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch, 0))
657 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, 0))
664 local function calc_ja_ja_glue()
665 if ihb_flag then return nil
666 elseif (Nq.size==Np.size) and (Nq.met==Np.met) and (Nq.var==Np.var) then
667 return new_jfm_glue(Nq, Nq.class, Np.class)
669 local g = new_jfm_glue(Nq, Nq.class,
670 fast_find_char_class('diffmet',Nq.met))
671 local h = new_jfm_glue(Np, fast_find_char_class('diffmet',Np.met),
673 return calc_ja_ja_aux(g,h)
677 -------------------- 和欧文間空白量の決定
680 local function get_xkanji_skip_from_jfm(Nn)
681 local i = Nn.met.size_cache[Nn.size].xkanjiskip
683 return { i[1], i[2], i[3] }
687 local function get_xkanjiskip(Nn)
688 local g = node_new(id_glue)
689 if Nq.xspc_after and Np.xspc_before and (Nq.auto_xspc or Np.auto_xspc) then
690 if xkanji_skip.width == max_dimen then
691 local gx = node_new(id_glue_spec);
692 gx.stretch_order = 0; gx.shrink_order = 0
693 local bk = get_xkanji_skip_from_jfm(Nn)
695 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
696 else node_free(gx); gx = get_zero_glue() -- fallback
699 else g.spec=node_copy(xkanji_skip) end
701 g.spec = get_zero_glue()
703 set_attr(g, attr_icflag, XKANJI_SKIP)
708 -------------------- 隣接した「塊」間の処理
710 local function get_OA_skip()
713 if Nq.id == id_math then c = -1 else c = 'jcharbdd' end
714 return new_jfm_glue(Np, fast_find_char_class(c,Np.met), Np.class)
718 local function get_OB_skip()
721 if Np.id == id_math then c = -1 else c = 'jcharbdd' end
722 return new_jfm_glue(Nq, Nq.class, fast_find_char_class(c,Nq.met))
727 -- (anything) .. jachar
728 local function handle_np_jachar()
730 if Nq.id==id_jglyph or (Nq.id==id_pbox and Nq.met) then
731 g = calc_ja_ja_glue() or get_kanjiskip() -- M->K
733 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
734 elseif Nq.met then -- Nq.id==id_hlist
735 g = get_OA_skip() or get_kanjiskip() -- O_A->K
736 handle_penalty_normal(0, Np.pre, g); real_insert(0, g)
738 g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
739 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
741 g = get_OA_skip() -- O_A
742 if Nq.id==id_glue then handle_penalty_normal(0, Np.pre, g)
743 elseif Nq.id==id_kern then handle_penalty_suppress(0, Np.pre, g)
744 else handle_penalty_always(0, Np.pre, g)
748 -- \jcharwidowpenalty 挿入予定箇所更新
749 if mode and ltjs_get_penalty_table('kcat', Np.char, 0, box_stack_level)%2~=1 then
750 widow_Np.first = Np.first;
751 local Bpr = widow_Bp; widow_Bp = Bp; Bp = Bpr
755 -- jachar .. (anything)
756 local function handle_nq_jachar()
759 g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
761 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
763 g = get_OB_skip(); g = lineend_fix(g) -- O_B
764 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
765 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
766 else handle_penalty_always(Nq.post, 0, g)
768 real_insert(Nq.lend, g)
772 -- (anything) .. (和文文字で終わる hlist)
773 local function handle_np_ja_hlist()
775 if Nq.id==id_jglyph or (Nq.id==id_pbox and Nq.met) then
776 g = get_OB_skip() or get_kanjiskip() -- O_B->K
778 handle_penalty_normal(Nq.post, 0, g); real_insert(Nq.lend, g)
779 elseif Nq.met then -- Nq.id==id_hlist
780 g = get_kanjiskip() -- K
781 handle_penalty_suppress(0, 0, g); real_insert(0, g)
783 g = get_xkanjiskip(Np) -- X
784 handle_penalty_suppress(0, 0, g); real_insert(0, g)
788 -- (和文文字で終わる hlist) .. (anything)
789 local function handle_nq_ja_hlist()
792 g = get_xkanjiskip(Nq) -- X
793 handle_penalty_suppress(0, 0, g); real_insert(0, g)
797 -------------------- 開始・終了時の処理
800 local function handle_list_tail()
803 -- the current list is to be line-breaked:
804 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
806 g = node_new(id_kern); g.subtype = 0; g.kern = Np.lend
807 set_attr(g, attr_icflag, BOXBDD)
808 node_insert_after(head, Np.last, g)
811 -- Insert \jcharwidowpenalty
812 Bp = widow_Bp; Np = widow_Np; Nq.lend = 0
814 handle_penalty_normal(0,
815 ltjs_get_penalty_table('jwp', 0, 0, box_stack_level))
818 -- the current list is the contents of a hbox
819 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
820 local g = new_jfm_glue(Np, Np.class, fast_find_char_class('boxbdd',Np.met))
822 set_attr(g, attr_icflag, BOXBDD)
823 head = node_insert_after(head, Np.last, g)
826 head = node_remove(head, last); node_free(last);-- remove the sentinel
828 node_free(kanji_skip); node_free(xkanji_skip)
832 local function handle_list_head()
833 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
837 g = new_jfm_glue(Np, fast_find_char_class('parbdd',Np.met), Np.class)
839 g = new_jfm_glue(Np, fast_find_char_class('boxbdd',Np.met), Np.class)
842 set_attr(g, attr_icflag, BOXBDD)
843 if g.id==id_glue and #Bp==0 then
844 local h = node_new(id_penalty)
845 h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD)
847 head = node_insert_before(head, Np.first, g)
854 local function init_var()
855 lp = head; Bp = {}; widow_Bp = {}; widow_Np = {first = nil}
857 box_stack_level = ltjp.box_stack_level
858 kanji_skip=skip_table_to_spec('kanjiskip')
859 xkanji_skip=skip_table_to_spec('xkanjiskip')
861 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
862 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
863 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
866 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
867 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
868 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
871 -- the current list is to be line-breaked:
872 -- hbox from \parindent is skipped.
873 while lp and ((lp.id==id_whatsit and lp.subtype~=sid_user)
874 or ((lp.id==id_hlist) and (lp.subtype==3))) do
875 if (lp.id==id_hlist) and (lp.subtype==3) then par_indented = true end
879 -- the current list is the contents of a hbox:
881 last=node.tail(head); local g = node_new(id_kern)
882 node_insert_after(head, last, g); last = g
886 -------------------- 外部から呼ばれる関数
889 function main(ahead, amode)
890 if not ahead then return ahead end
891 head = ahead; mode = amode; init_var(); calc_np()
893 extract_np(); handle_list_head()
894 if Np.id==id_glyph then after_alchar()
895 elseif Np.id==id_hlist or Np.id==id_pbox or Np.id==id_disc then after_hlist()
898 if not mode then head = node_remove(head, last); node_free(last) end
905 if Np.id == id_jglyph then
908 if Np.id==id_hlist then handle_np_ja_hlist()
909 else handle_np_jachar() end
911 if Nq.id==id_hlist then handle_nq_ja_hlist()
912 else handle_nq_jachar() end
915 if Np.id==id_glyph then after_alchar()
916 elseif Np.id==id_hlist or Np.id==id_pbox or Np.id==id_disc then after_hlist()
921 -- adjust attr_icflag
922 tex.attribute[attr_icflag] = -(0x7FFFFFFF)
927 local inhibitglue_node=node_new(id_whatsit, sid_user)
928 inhibitglue_node.user_id=30111; inhibitglue_node.type=100; inhibitglue_node.value=1
930 function create_inhibitglue_node()
931 node.write(node.copy(inhibitglue_node))