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 local par_indented -- is the paragraph indented?
81 -------------------- Helper functions
83 -- This function is called only for acquiring `special' characters.
84 local function find_char_class(c,m)
85 return m.chars[c] or 0
88 local spec_zero_glue = node_new(id_glue_spec)
89 spec_zero_glue.width = 0; spec_zero_glue.stretch_order = 0; spec_zero_glue.stretch = 0
90 spec_zero_glue.shrink_order = 0; spec_zero_glue.shrink = 0
92 local function get_zero_glue()
93 return node_copy(spec_zero_glue)
96 local function skip_table_to_spec(n)
97 local g = node_new(id_glue_spec)
98 local st = ltjs_get_skip_table(n, box_stack_level)
99 g.width = st.width; g.stretch = st.stretch; g.shrink = st.shrink
100 g.stretch_order = st.stretch_order; g.shrink_order = st.shrink_order
105 local function add_penalty(p,e)
106 if p.penalty>=10000 then
107 if e<=-10000 then p.penalty = 0 end
108 elseif p.penalty<=-10000 then
109 if e>=10000 then p.penalty = 0 end
111 p.penalty = p.penalty + e
112 if p.penalty>=10000 then p.penalty = 10000
113 elseif p.penalty<=-10000 then p.penalty = -10000 end
119 diffmet_rule = math.two_average
120 function math.two_add(a,b) return a+b end
121 function math.two_average(a,b) return (a+b)/2 end
123 -------------------- idea
124 -- 2 node の間に glue/kern/penalty を挿入する.
125 -- 基本方針: char node q と char node p の間
128 -- first: 最初の node,nuc: p,last: 最後の node
131 -- 実際の glue は Np.last, Nq.first の間に挿入される
132 -- Bp: Np.last, Nq.first の間の penalty node 達の配列
134 -- Np, Nq, Bp, widow_Bp について
136 -- 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,
137 -- 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.
138 -- 同様の関係は Bp, widow_Bp にも.
142 -- node x が non-char node のときは,x のみ
143 -- x が char_node のときは,
144 -- - x が \accent の第二引数だったとき
145 -- [kern2 kern y kern2] x の 3 node が核に加わる
146 -- - x の直後に \/ 由来 kern があったとき
147 -- その \/ 由来の kern が核に加わる
149 -- ins, mark, adjust, whatsit, penalty
151 -- Nq.last .. + .. Bp.first .... Bp[last] .... * .. Np.first
152 -- +: kern from LINEEND はここに入る
153 -- *: jfm glue はここに入る
155 local head -- the head of current list
156 local last -- the last node of current list
157 local lp -- 外側での list 走査時のカーソル
160 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
162 local ihb_flag -- JFM グルー挿入抑止用 flag
163 -- on: \inhibitglue 指定時,hlist の周囲
165 -------------------- hlist 内の文字の検索
167 local first_char, last_char, find_first_char
169 local function check_box(box_ptr, box_end)
170 local p = box_ptr; local found_visible_node = false
172 find_first_char = false; first_char = nil; last_char = nil
175 while p and p~=box_end do
179 p = node_next(node_next(node_next(p))); pid = p.id
180 elseif has_attr(p, attr_icflag)==IC_PROCESSED then
181 p = node_next(p); pid = p.id
184 if pid==id_glyph then
186 if find_first_char then
187 first_char = p; find_first_char = false
189 last_char = p; found_visible_node = true; p=node_next(p)
190 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 -------------------- Np の計算と情報取得
228 local function set_attr_icflag_processed(p)
229 local a = has_attr(p, attr_icflag) or 0
230 if a<=1 then set_attr(p, attr_icflag, PROCESSED) end
233 local function check_next_ickern()
234 if lp.id == id_kern and has_attr(lp, attr_icflag)==ITALIC then
235 set_attr(lp, attr_icflag, IC_PROCESSED); Np.last = lp; lp = node_next(lp)
236 else Np.last = Np.nuc end
239 local function calc_np_pbox()
240 Np.first = lp; Np.id = id_pbox
241 lpa = KINSOKU -- dummy
242 while lp~=last and lpa>=PACKED and lpa~=BOXBDD do
243 Np.nuc = lp; lp = node_next(lp); lpa = has_attr(lp, attr_icflag) or 0
248 local function calc_np()
249 -- We assume lp = node_next(Np.last)
251 Nr = Nq; for k in pairs(Nr) do Nr[k] = nil end
253 for k in pairs(Bp) do Bp[k] = nil end
256 lpi = lp.id; lpa = has_attr(lp, attr_icflag) or 0
257 if lp==last then Np = nil; return
258 elseif lpa>=PACKED then
259 if lpa == BOXBDD then
260 local lq = node_next(lp)
261 head = node_remove(head, lp); node_free(lp); lp = lq
262 else calc_np_pbox(); return end -- id_pbox
263 elseif lpi == id_ins or lpi == id_mark or lpi == id_adjust then
264 set_attr_icflag_processed(lp); lp = node_next(lp)
265 elseif lpi == id_penalty then
266 table_insert(Bp, lp); set_attr_icflag_processed(lp); lp = node_next(lp)
267 elseif lpi == id_whatsit then
268 if lp.subtype==sid_user and lp.user_id==30111 then
269 local lq = node_next(lp)
270 head = node_remove(head, lp); node_free(lp); lp = lq; ihb_flag = true
272 set_attr_icflag_processed(lp); lp = node_next(lp)
274 else -- a `cluster' is found
276 if lpi == id_glyph then -- id_[j]glyph
277 if lp.font == has_attr(lp, attr_curjfnt) then Np.id = id_jglyph
278 else Np.id = id_glyph end
279 Np.nuc = lp; set_attr_icflag_processed(lp)
280 lp = node_next(lp); check_next_ickern(); return
281 elseif lpi == id_hlist then -- hlist
282 Np.last = lp; Np.nuc = lp; set_attr_icflag_processed(lp)
283 if lp.shift~=0 then Np.id = id_box_like
285 lp = node_next(lp); return
286 elseif lpi == id_vlist or lpi == id_rule then -- id_box_like
287 Np.nuc = lp; Np.last = lp; Np.id = id_box_like; break
288 elseif lpi == id_math then -- id_math
289 Np.nuc = lp; lp = node_next(lp)
290 while lp.id~=id_math do
291 set_attr_icflag_processed(lp); lp = node_next(lp)
293 elseif lpi == id_kern and lp.subtype==2 then -- id_kern
294 set_attr_icflag_processed(lp); lp = node_next(lp)
295 set_attr_icflag_processed(lp); lp = node_next(lp)
296 set_attr_icflag_processed(lp); lp = node_next(lp)
297 set_attr_icflag_processed(lp); Np.nuc = lp
298 if lp.font == has_attr(lp, attr_curjfnt) then Np.id = id_jglyph
299 else Np.id = id_glyph end
300 lp = node_next(lp); check_next_ickern(); return
301 else -- id_disc, id_glue, id_kern
306 set_attr_icflag_processed(lp); Np.last = lp; Np.id = lpi; lp = node_next(lp)
309 -- extract informations from Np
310 -- We think that "Np is a Japanese character" if Np.met~=nil,
311 -- "Np is an alphabetic character" if Np.pre~=nil,
312 -- "Np is not a character" otherwise.
315 local function set_np_xspc_jachar(c,x)
316 Np.class = has_attr(x, attr_jchar_class)
318 local z = ltjf_font_metric_table[x.font]
320 Np.met = ltjf_metrics[z.jfm]
322 Np.pre = ltjs_get_penalty_table('pre', c, 0, box_stack_level)
323 Np.post = ltjs_get_penalty_table('post', c, 0, box_stack_level)
324 z = find_char_class('lineend', Np.met)
325 local y = Np.met.size_cache[Np.size].char_type[Np.class]
326 if y.kern and y.kern[z] then
331 y = ltjs_get_penalty_table('xsp', c, 3, box_stack_level)
332 Np.xspc_before = (y>=2)
333 Np.xspc_after = (y%2==1)
334 Np.auto_kspc = (has_attr(x, attr_autospc)==1)
335 Np.auto_xspc = (has_attr(x, attr_autoxspc)==1)
339 local ligature_head = 1
340 local ligature_tail = 2
341 local function set_np_xspc_alchar(c,x, lig)
343 if lig == ligature_head then
344 while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
345 x = x.components; c = x.char
348 while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
349 x = node_tail(x.components); c = x.char
352 Np.pre = ltjs_get_penalty_table('pre', c, 0, box_stack_level)
353 Np.post = ltjs_get_penalty_table('post', c, 0, box_stack_level)
355 Np.pre = 0; Np.post = 0
358 local y = ltjs_get_penalty_table('xsp', c, 3, box_stack_level)
359 Np.xspc_before = (y%2==1)
360 Np.xspc_after = (y>=2)
361 Np.auto_xspc = (has_attr(x, attr_autoxspc)==1)
365 local function extract_np()
367 if Np.id == id_jglyph then
368 set_np_xspc_jachar(x.char, x)
369 elseif Np.id == id_glyph then
370 set_np_xspc_alchar(x.char, x, ligature_head)
371 elseif Np.id == id_hlist then
372 find_first_char = true; first_char = nil; last_char = nil
373 if check_box(x.head, nil) then
375 if first_char.font == has_attr(first_char, attr_curjfnt) then
376 set_np_xspc_jachar(first_char.char,first_char)
378 set_np_xspc_alchar(first_char.char,first_char, ligature_head)
382 elseif Np.id == id_pbox then -- mikann
383 find_first_char = true; first_char = nil; last_char = nil
384 if check_box(Np.first, node_next(Np.last)) then
386 if first_char.font == has_attr(first_char, attr_curjfnt) then
387 set_np_xspc_jachar(first_char.char,first_char)
389 set_np_xspc_alchar(first_char.char,first_char, ligature_head)
393 elseif Np.id == id_disc then
394 find_first_char = true; first_char = nil; last_char = nil
395 if check_box(x.replace, nil) then
397 if first_char.font == has_attr(first_char, attr_curjfnt) then
398 set_np_xspc_jachar(first_char.char,first_char)
400 set_np_xspc_alchar(first_char.char,first_char, ligature_head)
404 elseif Np.id == id_math then
405 set_np_xspc_alchar(-1, x)
409 -- change the information for the next loop
410 -- (will be done if Np is an alphabetic character or a hlist)
411 local function after_hlist()
413 if last_char.font == has_attr(last_char, attr_curjfnt) then
414 set_np_xspc_jachar(last_char.char,last_char, ligature_after)
416 set_np_xspc_alchar(last_char.char,last_char, ligature_after)
419 Np.pre = nil; Np.met = nil
422 local function after_alchar()
424 set_np_xspc_alchar(x.char,x, ligature_after)
428 -------------------- 最下層の処理
430 local function lineend_fix(g)
431 if g and g.id==id_kern then
433 elseif Nq.lend~=0 then
435 g = node_new(id_kern); g.subtype = 1
436 g.kern = -Nq.lend; set_attr(g, attr_icflag, LINEEND)
437 elseif g.id==id_kern then
438 g.kern = g.kern - Nq.lend
440 g.spec.width = g.spec.width - Nq.lend
446 -- change penalties (or create a new penalty, if needed)
447 local function handle_penalty_normal(post, pre, g)
448 local a = (pre or 0) + (post or 0)
450 if (a~=0 and not(g and g.id==id_kern)) or Nq.lend~=0 then
451 local p = node_new(id_penalty)
452 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
454 head = node_insert_before(head, Np.first, p)
455 Bp[1] = p; set_attr(p, attr_icflag, KINSOKU)
457 else for i, v in pairs(Bp) do add_penalty(v,a) end
461 local function handle_penalty_always(post, pre, g)
462 local a = (pre or 0) + (post or 0)
464 if not (g and g.id==id_glue) or Nq.lend~=0 then
465 local p = node_new(id_penalty)
466 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
468 head = node_insert_before(head, Np.first, p)
469 Bp[1] = p; set_attr(p, attr_icflag, KINSOKU)
471 else for i, v in pairs(Bp) do add_penalty(v,a) end
475 local function handle_penalty_suppress(post, pre, g)
476 local a = (pre or 0) + (post or 0)
478 if g and g.id==id_glue then
479 local p = node_new(id_penalty)
480 p.penalty = 10000; head = node_insert_before(head, Np.first, p)
481 Bp[1] = p; set_attr(p, attr_icflag, KINSOKU)
483 else for i, v in pairs(Bp) do add_penalty(v,a) end
487 -- 和文文字間の JFM glue を node 化
488 local function new_jfm_glue(Nn, bc, ac)
489 -- bc, ac: char classes
491 local z = Nn.met.size_cache[Nn.size].char_type[bc]
492 if z.glue and z.glue[ac] then
493 local h = node_new(id_glue_spec)
494 h.width = z.glue[ac][1]
495 h.stretch = z.glue[ac][2]
496 h.shrink = z.glue[ac][3]
497 h.stretch_order=0; h.shrink_order=0
498 g = node_new(id_glue)
499 g.subtype = 0; g.spec = h
500 elseif z.kern and z.kern[ac] then
501 g = node_new(id_kern)
502 g.subtype = 1; g.kern = z.kern[ac]
504 if g then set_attr(g, attr_icflag, FROM_JFM) end
508 -- Nq.last (kern w) .... (glue/kern g) Np.first
509 local function real_insert(w, g)
511 local h = node_new(id_kern)
512 set_attr(h, attr_icflag, LINE_END)
513 h.kern = w; h.subtype = 1
514 head = node_insert_after(head, Nq.last, h)
517 head = node_insert_before(head, Np.first, g)
522 -------------------- 和文文字間空白量の決定
525 local function get_kanji_skip_from_jfm(Nn)
526 local i = Nn.met.size_cache[Nn.size].kanjiskip
528 return { i[1], i[2], i[3] }
532 local function get_kanjiskip()
533 local g = node_new(id_glue)
534 if Np.auto_kspc or Nq.auto_kspc then
535 if kanji_skip.width == max_dimen then
536 local gx = node_new(id_glue_spec);
537 gx.stretch_order = 0; gx.shrink_order = 0
538 local bk = get_kanji_skip_from_jfm(Nq)
540 if (Np.met==Nq.met) and (Nq.size==Np.size) and (Nq.var==Np.var) then
543 ak = get_kanji_skip_from_jfm(Np)
547 gx.width = round(diffmet_rule(bk[1], ak[1]))
548 gx.stretch = round(diffmet_rule(bk[2], ak[2]))
549 gx.shrink = -round(diffmet_rule(-bk[3], -ak[3]))
551 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
554 gx.width = ak[1]; gx.stretch = ak[2]; gx.shrink = ak[3]
555 else node_free(gx); gx = get_zero_glue() -- fallback
558 else g.spec=node_copy(kanji_skip); node_free(gx) end
560 g.spec = get_zero_glue(); node_free(gx)
562 set_attr(g, attr_icflag, KANJI_SKIP)
566 local function calc_ja_ja_aux(gb,ga)
570 if not ga then return gb end
571 local k = node.type(gb.id) .. node.type(ga.id)
572 if k == 'glueglue' then
574 gb.spec.width = round(diffmet_rule(gb.spec.width, ga.spec.width))
575 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch,ga.spec.shrink))
576 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, -ga.spec.shrink))
579 elseif k == 'kernkern' then
581 gb.kern = round(diffmet_rule(gb.kern, ga.kern))
584 elseif k == 'kernglue' then
585 -- gb: kern, ga: glue
586 ga.spec.width = round(diffmet_rule(gb.kern,ga.spec.width))
587 ga.spec.stretch = round(diffmet_rule(ga.spec.stretch, 0))
588 ga.spec.shrink = -round(diffmet_rule(-ga.spec.shrink, 0))
592 -- gb: glue, ga: kern
593 gb.spec.width = round(diffmet_rule(ga.kern, gb.spec.width))
594 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch, 0))
595 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, 0))
602 local function calc_ja_ja_glue()
603 if ihb_flag then return nil
604 elseif (Nq.size==Np.size) and (Nq.met==Np.met) and (Nq.var==Np.var) then
605 return new_jfm_glue(Nq, Nq.class, Np.class)
607 local g = new_jfm_glue(Nq, Nq.class,
608 find_char_class('diffmet',Nq.met))
609 local h = new_jfm_glue(Np, find_char_class('diffmet',Np.met),
611 return calc_ja_ja_aux(g,h)
615 -------------------- 和欧文間空白量の決定
618 local function get_xkanji_skip_from_jfm(Nn)
619 local i = Nn.met.size_cache[Nn.size].xkanjiskip
621 return { i[1], i[2], i[3] }
625 local function get_xkanjiskip(Nn)
626 local g = node_new(id_glue)
627 if Nq.xspc_after and Np.xspc_before and (Nq.auto_xspc or Np.auto_xspc) then
628 if xkanji_skip.width == max_dimen then
629 local gx = node_new(id_glue_spec);
630 gx.stretch_order = 0; gx.shrink_order = 0
631 local bk = get_xkanji_skip_from_jfm(Nn)
633 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
634 else node_free(gx); gx = get_zero_glue() -- fallback
637 else g.spec=node_copy(xkanji_skip) end
639 g.spec = get_zero_glue()
641 set_attr(g, attr_icflag, XKANJI_SKIP)
646 -------------------- 隣接した「塊」間の処理
648 local function get_OA_skip()
651 if Nq.id == id_math then c = -1 else c = 'jcharbdd' end
652 return new_jfm_glue(Np, find_char_class(c,Np.met), Np.class)
656 local function get_OB_skip()
659 if Np.id == id_math then c = -1 else c = 'jcharbdd' end
660 return new_jfm_glue(Nq, Nq.class, find_char_class(c,Nq.met))
665 -- (anything) .. jachar
666 local function handle_np_jachar()
668 if Nq.id==id_jglyph or (Nq.id==id_pbox and Nq.met) then
669 g = calc_ja_ja_glue() or get_kanjiskip() -- M->K
671 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
672 elseif Nq.met then -- Nq.id==id_hlist
673 g = get_OA_skip() or get_kanjiskip() -- O_A->K
674 handle_penalty_normal(0, Np.pre, g); real_insert(0, g)
676 g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
677 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
679 g = get_OA_skip() -- O_A
680 if Nq.id==id_glue then handle_penalty_normal(0, Np.pre, g)
681 elseif Nq.id==id_kern then handle_penalty_suppress(0, Np.pre, g)
682 else handle_penalty_always(0, Np.pre, g)
686 -- \jcharwidowpenalty 挿入予定箇所更新
687 if mode and ltjs_get_penalty_table('kcat', Np.char, 0, box_stack_level)%2~=1 then
688 widow_Np.first = Np.first;
689 local Bpr = widow_Bp; widow_Bp = Bp; Bp = Bpr
693 -- jachar .. (anything)
694 local function handle_nq_jachar()
697 g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
699 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
701 g = get_OB_skip(); g = lineend_fix(g) -- O_B
702 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
703 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
704 else handle_penalty_always(Nq.post, 0, g)
706 real_insert(Nq.lend, g)
710 -- (anything) .. (和文文字で終わる hlist)
711 local function handle_np_ja_hlist()
713 if Nq.id==id_jglyph or (Nq.id==id_pbox and Nq.met) then
714 g = get_OB_skip() or get_kanjiskip() -- O_B->K
716 handle_penalty_normal(Nq.post, 0, g); real_insert(Nq.lend, g)
717 elseif Nq.met then -- Nq.id==id_hlist
718 g = get_kanjiskip() -- K
719 handle_penalty_suppress(0, 0, g); real_insert(0, g)
721 g = get_xkanjiskip(Np) -- X
722 handle_penalty_suppress(0, 0, g); real_insert(0, g)
726 -- (和文文字で終わる hlist) .. (anything)
727 local function handle_nq_ja_hlist()
730 g = get_xkanjiskip(Nq) -- X
731 handle_penalty_suppress(0, 0, g); real_insert(0, g)
735 -------------------- 開始・終了時の処理
738 local function handle_list_tail()
741 -- the current list is to be line-breaked:
742 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
744 g = node_new(id_kern); g.subtype = 0; g.kern = Np.lend
745 set_attr(g, attr_icflag, BOXBDD)
746 node_insert_after(head, Np.last, g)
749 -- Insert \jcharwidowpenalty
750 Bp = widow_Bp; Np = widow_Np; Nq.lend = 0
752 handle_penalty_normal(0,
753 ltjs_get_penalty_table('jwp', 0, 0, box_stack_level))
756 -- the current list is the contents of a hbox
757 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
758 local g = new_jfm_glue(Np, Np.class, find_char_class('boxbdd',Np.met))
760 set_attr(g, attr_icflag, BOXBDD)
761 head = node_insert_after(head, Np.last, g)
764 head = node_remove(head, last); node_free(last);-- remove the sentinel
766 node_free(kanji_skip); node_free(xkanji_skip)
770 local function handle_list_head()
771 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
775 g = new_jfm_glue(Np, find_char_class('parbdd',Np.met), Np.class)
777 g = new_jfm_glue(Np, find_char_class('boxbdd',Np.met), Np.class)
780 set_attr(g, attr_icflag, BOXBDD)
781 if g.id==id_glue and #Bp==0 then
782 local h = node_new(id_penalty)
783 h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD)
785 head = node_insert_before(head, Np.first, g)
792 local function init_var()
793 lp = head; Bp = {}; widow_Bp = {}; widow_Np = {first = nil}
795 box_stack_level = ltjp.box_stack_level
796 kanji_skip=skip_table_to_spec('kanjiskip')
797 xkanji_skip=skip_table_to_spec('xkanjiskip')
799 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
800 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
801 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
804 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
805 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
806 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
809 -- the current list is to be line-breaked:
810 -- hbox from \parindent is skipped.
811 while lp and ((lp.id==id_whatsit and lp.subtype~=sid_user)
812 or ((lp.id==id_hlist) and (lp.subtype==3))) do
813 if (lp.id==id_hlist) and (lp.subtype==3) then par_indented = true end
817 -- the current list is the contents of a hbox:
819 last=node.tail(head); local g = node_new(id_kern)
820 node_insert_after(head, last, g); last = g
824 -------------------- 外部から呼ばれる関数
827 function main(ahead, amode)
828 if not ahead then return ahead end
829 head = ahead; mode = amode; init_var(); calc_np()
831 extract_np(); handle_list_head()
832 if Np.id==id_glyph then after_alchar()
833 elseif Np.id==id_hlist or Np.id==id_pbox or Np.id==id_disc then after_hlist()
836 if not mode then head = node_remove(head, last); node_free(last) end
843 if Np.id == id_jglyph then
846 if Np.id==id_hlist then handle_np_ja_hlist()
847 else handle_np_jachar() end
849 if Nq.id==id_hlist then handle_nq_ja_hlist()
850 else handle_nq_jachar() end
853 if Np.id==id_glyph then after_alchar()
854 elseif Np.id==id_hlist or Np.id==id_pbox or Np.id==id_disc then after_hlist()
859 -- adjust attr_icflag
860 tex.attribute[attr_icflag] = -(0x7FFFFFFF)
865 local inhibitglue_node=node_new(id_whatsit, sid_user)
866 inhibitglue_node.user_id=30111; inhibitglue_node.type=100; inhibitglue_node.value=1
868 function create_inhibitglue_node()
869 node.write(node.copy(inhibitglue_node))